CROCODILE
SPECIALIST
GROUP
NEWSLETTER
VOLUME 26 No. 1 • JANUARY 2007 - MARCH 2007
IUCN - World Conservation Union • Species Survival Commission
CSG Newsletter Subscription
CROCODILE
The CSG Newsletter is produced and distributed by the
Crocodile Specialist Group of the Species Survival Commission
of the IUCN-The World Conservation Union.
SPECIALIST
The CSG Newsletter provides information on the conservation,
status, news and current events concerning crocodilians, and on
the activities of the CSG. The Newsletter is distributed to CSG
members and to other interested individuals and organizations.
All Newsletter recipients are asked to contribute news and other
materials.
GROUP
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NEWSLETTER
All CSG communications should be addressed to:
CSG Executive Office, PO Box 530, Sanderson NT 0813,
Australia. Fax: (61) 8 89470678. E-mail: csg@wmi.com.au.
VOLUME 26 Number 1
JANUARY 2007 – MARCH 2007
PATRONS
We thank all patrons who have donated to the CSG and its
conservation program over many years, and especially to donors
in 2006-2007 (listed below).
IUCN - The World Conservation Union
Species Survival Commission
Big Bull Crocs! ($15,000 or more annually or in aggregate
donations)
CHAIRMAN:
Professor Grahame Webb
PO Box 530
Sanderson, NT 0813
Australia
Japan, JLIA - Japan Leather & Leather Goods Industries
Association, CITES Promotion Committee & All Japan
Reptile Skin and Leather Association, Tokyo, Japan.
Heng Long Leather Co. Pte. Ltd., Singapore.
Singapore Reptile Skin Trade Association, Singapore.
D. & J. Lewkowicz, France Croco et Cie-Inter Reptile, Paris,
France.
EDITORIAL AND EXECUTIVE OFFICE:
PO Box 530
Sanderson, NT 0813
Australia
Friends ($3000 - $15,000)
Mainland Holdings, Lae, Papua New Guinea.
Louisiana Fur and Alligator Advisory Council of the Louisiana
Dept. of Wildlife and Fisheries, LA, USA.
Enrico Chiesa, Italhide S.R.L., Milan, Italy.
Reptel Leather Goods, Madagascar.
Jack Puglia, Alligator Adventure, Barefoot Landing, North
Myrtle Beach, SC, USA.
Reptilartenschutz e. V., Offenbach, Germany.
Roggwiller Tannery of Louisiana Inc. and Tanneries des Cuirs,
France.
Printed by: Uniprint NT
Charles Darwin University, NT 0909, Australia
COVER PHOTO. Release of one of four 1.5 year-old
C. mindorensis rescued as hatchlings from a nest being
attacked by army ants, into the wild at the crocodile
sanctuary in San Isidro, during field trip following the
“Forum on Crocodiles in the Philippines”, February 2007
(see pages 12-16). Photograph: Merlijn van Weerd.
Supporters ($1000 - $3000)
St. Augustine Alligator Farm Zooloogical Park, St. Augustine,
FL, USA.
2
the status of Crocodylus intermedius. Current status is
greatly improved, and despite the continued effort needed
to maintain the recovery, all associated with this longterm program effort and vision are to be commended.
Terry Cullen, Cullen Vivarium, Milwaukee, WI, USA.
Billy Gan, Indonesia.
Mandalay Bay Casino/Shark Reef, USA.
Luis Martinez, Caicsa S.A. Colombian Reptiles, Colombia.
Pan American Leathers Inc., USA.
Daniel Haller, Nile Crocodiles Ltd., Kenya.
F. & S. Ricaurte, Eco-Caimen, S.A., Zoocriadero Lirica Ltd.,
Colombia.
George Saputra, Jakarta, Java, Indonesia.
Yosapong Temsiripong, Sriracha Moda, and Crocodile
Management Association of Thailand.
Somkiat Wannawatanapong, Wabin Crocodile Farm and Thai
Skin and Hide Industrial Co. Ltd., Thailand.
Johan Jordaan, Zongwe Farming Enterprises, Zambia.
I attended the “Forum on Crocodiles in the Philippines”
(31 January to 2 February 2007) which saw stakeholders
from Government, industry, academia, NGOs and local
communities looking frankly at each othersʼ programs
and aspirations. The seven (7) resolutions agreed
provide an updated road map for crocodile conservation,
management and sustainable use in the Philippines (see
pages 12-16). This includes restocking virtually extinct
populations from the captive breeding facility in Palawan.
The existence of wild populations of C. mindorensis and
C. porosus in Liguasan Marsh, in southern Mindanao, was
confirmed. A project of cooperation between Mabuyawa
Foundation (Isabela Province, Luzon) and the University
of Southern Mindanao was born, with a view to ensuring
that the hard-earned lessons of the very successful project
in Isabella can be adapted and applied in Mindanao.
Andy Ross and Vic Mercado are to be congratulated
for their vision in pulling this all together, and the full
participation of the Isabella project gave clear guidance
of how local communities can become “partners” in
crocodile conservation efforts.
Contributors ($250 - $1000)
Dr. Michael Allen, Oxford, UK.
Brevard Zoo Animal Keepers, Brevard Zoo, Melbourne, FL,
USA.
Broome Crocodile Park, Broome, Western Australia, Australia.
Cairns Crocodile Farm, Redbank, Queensland, Australia.
Darlow Smithson Productions Ltd., UK.
East Bay Zoological Society, CA, USA.
Edgardo Fernandez, Crocodilia Colombiana Farm, Barranquilla,
Colombia.
Dino Ferrini, Curator of Amphibians and Reptiles, Audubon
Zoo, New Orleans, LA, USA.
Mr. Khoo Yeng Leng, Porosus Products/Taman Buaya Langkawi
Sdn Bhd., Kuala Lumpur, Malaysia.
Jorge Saieh, Zooben, Colombia.
Sirtrack Ltd., Havelock North, New Zealand.
Phillip Steel, Darwin, Australia.
Dr. Nao Thuok, Phnom Penh, Cambodia.
Vermilion Gator Farms, Inc., Abbeyville, LA, USA.
Yee Tai Leather Enterprise Ltd., Hong Kong.
CSG representation in West Africa has always been
constrained, and at the last Working Meeting (France,
June 2006) the possibility of a CSG sub-regional meeting
in West Africa (in Niger, mid-November 2007), and a
regional meeting in South Africa (late November 2007),
were discussed. Both these initiatives are advancing.
Editorial
Crocodile management in Madagascar was a subject of
concern for the CSG and CITES. A review by CITES
found a number of areas in urgent need of attention and the
CSG is currently looking at possibilities for assisting.
The year 2007 promises to be another active one for the
CSG. CITES CoP14 will take place in June (The Hague,
Netherlands), in which a core group of CSG members will
get a chance to meet. Brazil has a proposal on the agenda to
transfer their population of Black caimans (Melanosuchus
niger), now very abundant and widespread, from
Appendix I to Appendix II (see page 4). If successful, this
will involve Brazil in some new management challenges
as they trial a formal harvest program for meat and skins.
The Sepik Wetland Managment Intiative in Papua New
Guinea with crocodiles has been selected as a finalist
in the Equator Prize (www.undp.org/equatorinitiative/
equatorprize/EquatorPrize2006/2006-finalists.htm)
congratulations of all involved in that program.
During a visit to Bolivia in March 2007, Tom Dacey
confirmed with Bolivian authorities that plans for the
19th Working Meeting in Bolivia (June 2008) are well
advanced.
The CSG-Tomistoma Task Force organised a very
successful “Night for the Crocs” benefit at the Miami Metro
Zoo on 24 February 2007. Some 170 people attended,
raising $US3265 towards future CSG-TTF activities.
Bruce Shwedick, Ralf Sommerlad, Akira Matsuda and
other CSG-TTF members are to be congratulated for what
has been a pioneering fund-raising effort.
Let me take this opportunity to remind all CSG
members that in order to share information through the
Newsletter, we need you all to communicate with Tom
Dacey about progress being made with crocodilian
conservation, management and research. What may seem
inconsequential locally can provide guidance for other
members, facing similar problems, in different contexts.
The Venezuelan Crocodile Specialist Group (GECV)
convened the “Third Workshop for the Conservation of
the Orinoco Crocodile”, in San Carlos, Venezuela, on 1819 January 2007 (see pages 9-10). Participants analyzed
the successes and failures in 30 years of effort to improve
Professor Grahame Webb, CSG Chairman
3
CITES COP14
All CoP14 amendment proposals and working documents
are available from the CITES website (http://cites.org/
eng/cop/index.shtml).
The 14th Conference of the Parties to CITES will be held
in The Hague, Netherlands, on 3-15 June 2007, and the
CITES Standing Committee will meet prior to the CoP,
on 2 June. A number of issues of specific interest to the
CSG will be discussed at CoP14, including:
It is anticipated that a number of CSG members will
be participating at CoP14, and a detailed report on the
meeting will be included in the next issue of the CSG
Newsletter.
1. Brazilʼs amendment proposal (CoP14 Prop. 13)
seeking transfer of the Brazilian population of black
caiman (Melanosuchus niger) from Apendix I to
Appendix II. Early drafts of the Brazilian proposal
were reviewed by a team of CSG members [see CSG
Newsletter 25(4): 3]. Concerns on the extrapolation of
limited data from one area to derive a total population
estimate were addressed by Brazilian authorities,
who sent an addendum to the proposal to the CITES
Secretariat, CSG and European Union in February
2007. There appears to be little doubt that the M.
niger population in Brazil is large, and there is no
biological reason why the population cannot be used
sustainably.
Regional Reports
West Asia
2. Working document (CoP14 Doc. 46) submitted by
Germany on behalf of the European Community
Member States on Interpretation and Implementation
of the Convention (“Trade in some Crocodilian
Specimens”). The document requests the CITES
Standing Committee to consider the issue of trade
in small crocodilian leather goods and its impact on
the conservation of the species involved, and on the
effectiveness of the Convention. It specifically seeks
the establishment of a working group to:
a) examine the actual benefits and costs of the
requirement to issue CITES documents and
conduct trade controls for small crocodilian leather
goods;
b) consider possible ways and conditions to exempt
small crocodilian leather goods from the provisions
of CITES;
c) develop a proposal, if appropriate, to contribute
to the improvement of the effectiveness of the
Convention, providing for the exemption of small
crocodilian leather goods from the provisions of
CITES; and,
d) report to the 58th meeting of the Standing
Committee on the results of its work.
India
AWARD FOR CONTRIBUTION TO CONSERVATION.
Long-time CSG member Rom Whitakerʼs contribution
to wildlife research and nature conservation in India
was recently recognised when he was awarded the 2006
Sanctuary-ABN AMBRO Lifetime Service Award. An
interview published in Sanctuary Asia [26(6): 32-37]
provides some insights into Romʼs life and work with
snakes and crocodiles.
As an integral member the Gharial Multi-Task Force, Rom
has recently put the current status of the wild population
of Indian Gharial (Gavialis gangeticus) into the public
eye once again through in-depth interview/reviews [eg
Whitaker, R. (2007). The Gharial: going extinct again.
Iguana 24(1): 24-33].
Iran
MOVEMENT BEHAVIOUR OF MUGGERS: A
POTENTIAL THREAT. Movement between the water
resources in different seasons and for different reasons,
such as searching for new habitat or food resources, has
been reported as a common behavior for Mugger crocodiles
(Crocodylus palustris), including the population in Iran
(Whitaker and Whitaker 1984; Mobaraki 2004). Drought
in Iran is believed to be one factor responsible for such
movements. This behavior is more usual with juvenile
Muggers, and has been reported several times by local
people who observe footprints during work in the fields.
3. Working document (CoP14 Doc. 43) submitted by
USA on Interpretation and Implementation of the
Convention, Trade Control and Marking Issues
(“Effectiveness of the CITES Universal Crocodilian
Tagging System”). The document directs the CITES
Standing Committee to review the implementation
and effectiveness of the universal tagging system
[Resolution Conf. 11.12 (Universal tagging system for
the identification of crocodilian skins)], and present
recommendations to CoP15.
4
Movements can occur at different scales, from short
distances between close ponds, to long distances between
widely separated areas. In some of the latter cases the
distance between different ponds means it impossible
to determine the exact destination of the crocodiles.
Moreover, most movement takes place at night. Some
crocodiles pass through small villages, especially when
they move to artificial ponds constructed by local
people, and this creates some problems to the people by
frightening them and attacking to their livestock.
Elham Abtin, DOE Office in Sistan and Baluchistan
Provinces, Zahedan, Natural Environment Section, Iran,
<ala_saly@yahoo.com>.
Latin America & the Caribbean
Brazil
CAIMAN RESEARCH TRAINING COURSE IN THE
MAMIRAUÁ
SUSTAINABLE
DEVELOPMENT
RESERVE, BRAZILIAN AMAZON. Beginning in the
1990s, ecological research and population monitoring
of black (Melanosuchus niger) and spectacled (Caiman
crocodilus) caimans was carried out in the Mamirauá
Sustainable Development Reserve (MSDR) with the
involvement of Sociedad Civil Mamiraua and the Wildlife
Conservation Society (WCS). After more than 10 years
of research, it was found that black caiman populations
have been recovering from past hunting over-exploitation
for commercial purposes. Extremely high dry-season
encounter rates for caiman (in some cases exceeding 1000
individuals per kilometre of shoreline) have been reported
in certain zones of the reserve (Da Silveira, pers. comm.).
As the numbers of caimans increase, so do opportunities
to develop management programs that could involve local
communities that share habitat with these big predators in
the MSDR, and it has been suggested that management of
black caiman populations in this reserve could be carried
out on a sustainable basis (Da Silveira 2002).
Where crocodiles cross roads with no lighting, car strike
is a potentially serious threat to the animals (Fig. 1).
With such cases the final destination of the crocodiles
was unclear, and due to the large areas involved, control
measures and monitoring are impossible. Due to high
speeds and numbers of cars, especially trucks, prevention
of accidents with animals such as crocodiles would also
seem impossible. Over the past three years, 5 strikes
causing the death of the crocodiles were recorded. The
average length of these juvenile crocodiles was 132 cm.
In 2005, the Instituto de Desenvolvimento Sustentável
Mamirauá (IDSM) initiated a black caiman experimental
hunting program in Lago Mamirauá, and thus population
monitoring research is about to start again, after some
years, in order to track the population trends and generate
ecological information of black and spectacled caimans
in the reserve to shape the harvesting program with a
scientific basis.
Figure 1. Juvenile Mugger crocodile killed by car strike.
Photograph: A. Mobaraki.
Considering the movement behavior of Mugger crocodiles
and lack of detailed information on it, tracking of
movement using telemetry is considered a high priority,
but funding is required. Any assistance is this regard
would be greatly appreciated.
IDSM and WCS organized a two-week training course
to provide enthusiastic students practical experience to
carry out monitoring and ecological research. The training
course was carried out on 16-31 October 2006.
Literature
Whitaker, R. and Whitaker, Z. (1984). Reproductive
biology of the mugger. J. Bombay Nat. Hist. Soc.
81(2): 297-316.
Starting in the city of Tefé, Amazonas State, instructor
John Thorbjarnarson (WCS) provided theoretical basis
for the first three days. An introduction to crocodilian
biology, diversity, management and nesting was assessed
during this theoretical part. After that, the team moved
to Mamirauá to get involved with practical issues about
caiman research.
Mobaraki, A. (2004). Drought results in small Mugger
population of Iran. Pp. 143-147 in Crocodiles.
Proceedings of the 17th Working Meeting of the
IUCN-SSC Crocodile Specialist Group. IUCN:
Gland.
Located at the confluence of the Japurá and Solimões
Rivers, some 40 km north of Tefé, the MSDR is one of the
largest protected areas of Varzea in the world, with about
1.1 million ha and more than 600 protected lagoons.
Asghar Mobaraki, Wildlife and Aquatic Affairs Bureau,
Department of the Environment (DOE), P.O. Box 141557383, Tehran, Iran, <amobaraki@yahoo.com> and
5
The training course was divided in three main topics:
night spotlight surveys; nesting biology; and, collection
of stomach contents from captured animals. During the
practical part of the course, the team undertook 12 night
surveys in five different locations, within the focal area
of the reserve. Surveys were carried out after water levels
had already started to rise and many of the caiman had
already started to disperse. The highest densities were seen
in Lago Mamirauá, with up to 125 ind/km of shoreline,
most of them between 200 and 250 cm total length (TL).
Spectacled caiman were most numerous in the Paraná de
Mamirauá location, with up to 14.2 ind/km.
We found four C. crocodilus nests at three different
locations. All of them were found relatively far from
the water edge (mean distance= 19.4 m), suggesting that
attendant females do not need to be located in the water
to take care of their nests; two females were found hiding
in the leaf litter where they were captured to obtain their
sizes. Nine individuals (5 M. niger, 4 C. crocodilus; 73362 cm TL) were captured to give students experience
with measuring, sexing, weighing and marking.
One interesting finding was the recapture of one M.
niger individual that lives close to the Arapaima floating
research station in the reserve. This animal has been
named “Fred” by the people living in the station, and it
turns out this was the third time he has been captured in
the last 8 years. In 1998, the first time it was captured by
R. Da Silveira´s team, Fred measured 212.4 cm TL; the
second capture occurred in 1999 when he was 231.5 cm
TL. In this last recapture, Fred had reached 362 cm TL
(mean growth rate of 18.8 cm per year).
During the training course, 13 black caiman nests were
found at six different locations, particularly along lagoon
shores. Most of the nests were located in restinga baixa,
matupá and chavascal habitats around interior lagoons,
that in most cases are isolated from the main water course
due to the presence of vegetative material and sediments
in their creeks which prevent water loss and thus extreme
water level variation (J. Thorbjarnarson, pers. comm.).
Stomach contents were obtain from 4 M. niger and 2 C.
crocodilus. The most common items found were parts of
adult and larval insects, although three of the individuals
had empty stomachs.
All black caiman nests were found very close to the waterʼs
edge (mean distance= 3.5 m) which allows the nesting
female to remain close to take care of them. The presence
of attendant females was recorded at three nests only.
One of them was aggressive and chased the researchers
as they were trying to obtain data from the nest, forcing
them to escape running on the matupá (floating mats).
This female had been previously captured by Ronis Da
Silveira´s team in 1998 when it measured 254 cm TL and
weighed 65.7 kg.
The team returned to Tefé for the last two days, where
time was spent analyzing data, discussing and presenting
the final results.
Acknowledgements
John Thorbjarnarson (WCS), as the course instructor, gave
the students a very good approach to crocodilian biology
and revised a previous version of this manuscript. Instituto
de Desenvolvimento Sustentável Mamirauá organized the
course and provided the students with the opportunity to
be involved with crocodilians in the Mamirauá Reserve.
Paulo Henrique G. Oliveira from IDSM was in charge of
all logistics issues and participated in the whole course
as a student.
Average clutch size was 32.3 eggs per nest. During this
course we found the most extreme variation in clutch
size ever reported for M. niger. One nest had only 3 eggs
while another located 12 m away of it, contained 62 eggs,
suggesting that the female from the first nest finished
laying its eggs in this second nest (Fig. 1).
Literature
Da Silveira, R. (2002). Conservação e manejo do jacaréaçu (Melanosuchus niger) na Amazônia Brasileira.
Pp. 61-78 in Conservação e Manejo de Jacarés e
Crocodilos da América Latina. Volume 2, ed. by L.
Verdade and A. Larriera. C.N. Editoria: Piricicaba,
Brazil.
Francisco Villamarín-Jurado, Pasaje Kodaly D-52 y Luis
de Beethoven, Quito, Ecuador, <franciscovillamarin@
yahoo.com.ar>.
Figure 1. Instructor Dr. John Thorbjarnarson (left)
with training course participants at a M. niger nest
containing 62 eggs (see text).
MONITORING CAIMAN POPULATIONS SUBJECT
TO HIGH COMMERCIAL HUNTING IN THE
6
crocodilus, 15% were greater than 60 cm SVL, which
is the size at which females are presumed to become
sexually mature in the region (Da Silveira 2001). These
data were similar to those gathered in 2005 (ie 94% and
16% respectively).
PIAGAÇU-PURUS SUSTAINABLE DEVELOPMENT
RESERVE, CENTRAL AMAZONIA, BRAZIL. The
Piagaçu-Purus Sustainable Development Reserve (PPSDR; Fig. 1) is situated between the Solimões (Amazon)
and Purus Rivers and is the origin of many of the caiman
that are involved in an extensive network of illegal trade
(Da Silveira 2003), with an estimate of at least 50 tons
of dried-salted caiman meat being traded from the area
(Marioni et al. 2006).
Table 1. Density (number of individuals per km of
shoreline surveyed) of caimans (M. niger and C.
crocodilus) in waterbodies surveyed in 2005 and
2006, in the Piagaçu-Purus SDR. C.= canal, L.= lake.
Waterbody
Figure 1. Location of the Piagaçu-Purus Sustainable
Development Reserve.
2005 Surveys: We carried out 17 surveys during the dry
season of 2005, when 279.5 km of shoreline in 22 different
water bodies were surveyed and a total of 4729 caimans
counted (18.3% were identified to species). Caiman
crocodilus made up a higher proportion of sightings than
Melanosuchus niger (63% and 37% respectively), and
the mean density (expressed as the number of counted
individuals per km of shoreline surveyed) was 15.3 ind/
km (SD= 10.5) (Table 1). During the 2005 census we also
observed one Paleosuchus trigonatus. The population
size structure indicated that 94% of M. niger were less
than 100 cm SVL and 16% of C. crocodilus were greater
than 60 cm SVL.
2006 Surveys: Between 21 and 30 October 2006 we again
collected data on the relative abundance and population
size structure of M. niger and C. crocodilus. We carried
out 10 spotlight surveys along the shores of 20 water
bodies (11 lakes, 9 canals), 11 (55%) of which had been
mapped out in 2005 (Table 1).
km
2005
2006
Density
km
L. Arapapá
6.6
C. Uauaçu
8.1
L. Ayapuá direita
24.6
L. Embaúba
2.9
C. do L. Ayapuá
18.4
P. Itapuru
27.0
C. do L. Monguba
6.3
C. Verde
C. do Jacaré
20.5
C. do Arumã
20.7
L. Grande
1.2
L. Itapuru Mirim
12.1
C. do Cuiuanã
24.3
C. do Tracajá
C. do Bacuri
20.1
L. Itapuru Grande
12.5
C. do L. Tavares
L. Leitão
18.0
L. Monguba
5.2
C. do Xibui
L. Simão
C. do Ipixuna
10.0
C. do L. Grande do Cauá L. Marajazinho
L. Carro
12.0
C. do Cauá
29.0
L. Grande do Cauá
L. Marajá
-
2.7
5.3
2.6
5.9
8.0
9.5
10.0
11.5
12.5
19.2
9.8
18.6
25.0
11.1
23.7
23.3
25.9
36.8
39.2
-
5.8
10.9
12.1
7.4
2.1
2.3
19.3
25.0
2.6
23.1
21.6
10.3
30.0
22.9
7.3
13.3
6.0
39.3
2.4
4.0
4.1
4.2
9.3
9.5
12.9
13.0
13.0
13.9
15.4
15.6
16.8
20.9
22.6
23.6
24.7
28.7
33.0
33.9
39.6
59.5
Totals
15.3
267.7
20.7
279.5
Density
Notwithstanding the different distances in the 11 areas
surveyed in both 2005 and 2006 (Table 1), the mean
densities were similar in each year, at 15.3 and 14.2 ind/
km respectively.
We counted 5531 caimans over a distance of 267.7 km. Of
these sightings, 10.1% could be identified to species. The
most abundant species was C. crocodilus, representing
62% of the identified caimans, similar to that recorded in
2005 (63%). Melanosuchus niger represented more than
50% of the identified individuals in only 6 water bodies.
Density ranged from 4.1 to 59.5 ind/km (mean= 20.7,
SD= 13.4) (Table 1).
We have been monitoring the illegal trade of caiman meat
in the region since December 2004 and our data suggests
that more than 60% of the harvested caimans were hunted
in the northern sector of the PP-SDR. It is in some lakes
from this region where we found the highest relative
abundance of caimans over a 2-year period. However,
mean densities in the PP-SDR area are low compared
to other sites in the Amazon (Da Silveira 2001; Ruffeil
2004) and the size structure estimated for M. niger and C.
crocodilus during a 2-year period indicates possible overhunting of the larger size classes.
Size was estimated for 8.8% of observed caimans. More
than 95% of M. niger were less than 100 cm SVL, which
represents sub-adult classes of both sexes. We did not
observe any M. niger greater than 115 cm SVL. For C.
7
Acknowledgements
principally in the northern part of the reserve. We found
81 nests (7 M. niger, 74 C. crocodilus). Three (43%) of
the M. niger nests had already hatched, and we did not
observe any females attending the nests. The clutch sizes
recorded from two nests were 28 and 41 eggs (mean egg
length= 8.14 cm, SD= 0.16; mean egg width= 5.08 cm,
SD= 0.15; mean egg weight= 121.7 g, SD= 5.9).
Financial support was provided by grants from Brazilian
Conselho Nacional de Desenvolvimento Científico
e Tecnológico (CNPq) to Ronis Da Silveira (Proc.
482034/2004-1, Edital CNPq no. 019/2004 - Universal)
and by the Wildlife Conservation Society. Special
thanks to Ezequias Breláz for helping in the field, John
Thorbjarnarson for review of the manuscript and to all the
inhabitants of the Piagaçu-Purus SDR, especially caiman
hunters, for their collaboration throughout this study.
Females were found in the vicinity of 36 (48.6%) of the
C. crocodilus nests, hidden under tree roots, fallen trees
or leaves. Estimated size of these females ranged from 45
to 80 cm SVL. Eleven nests were opened and clutch size
varied between 2 and 35 eggs (mean clutch size= 24.9;
mean egg length= 6.18 cm, SD= 0.51; mean egg width=
3.84 cm, SD= 0.22; mean egg weight= 53.71 g, SD=
8.56). Most nests contained eggs (73.0%), 17.6% had
already hatched and 9.4% were predated. Local people
were responsible for 57 % of predated nests, and the
remainder were probably predated by Brown capuchin
monkeys (Cebus apella), lizards (Tupinambis teguixim)
or jaguar (Panthera onca). Predation by jaguar was
registered once, eating only 4 eggs and also killing and
consuming part of the female guarding the nest (Fig. 1).
Literature
Da Silveira R. (2001). Monitoramento, Crescimento e
Caça de jacaré-açu (Melanosuchus niger) e de jacaré
tinga (Caiman crocodilus crocodilus). PhD Thesis,
Instituto Nacional de Pesquisas da Amazônia (INPA).
Manaus, Amazonas, Brazil. 175 pp.
Da Silveira R. (2003). Avaliação preliminar da
distribuição, abundância e da caça de jacarés no Baixo
Rio Purus. Pp. 61-64 in Piagaçu-Purus: Base Cientifica
para a Criação de uma Reserva de Desenvolvimento
Sustentável, ed. by C.P. Deus, R. Da Silveira and
L.H.R. Py-Daniel. IDSM: Manaus.
Marioni B., Von Mhülen E., Da Silveira R. (2006). Illegal
caiman hunting in the Sustainable Development
Reserve Piagaçu-Purus, Brazilian Amazonia. Pp.
165 in Crocodiles. Proceedings of the 18th Working
Meeting of the IUCN-SSC Crocodile Specialist
Group. IUCN: Gland.
Ruffeil L.A. (2004). Abundância, Reprodução, Caça
de Subsistência e Conservação de Jacarés na Terra
Indígena Uaçá, Amapá, Brasil. Dissertação de
mestrado, Museu Paraense Emílio Goeldi (MPEG).
Belém, Pará, Brazil. 57 pp.
Figure 1. Female C. crocodilus predated by jaguar as it
was guarding its nest. Photograph: Ezequias Breláz.
Boris Marioni, Instituto Piagaçu, Coordinator of Caiman
Project, Manaus - AM - Brazil, <bmarioni@piagacu.org.
br>; Eduardo Von Mühlen, Instituto Piagaçu, Coordinator
of Wildlife Hunting Project, <eduardo@piagacu.org.
br>; and, Ronis Da Silveira, Universidade Federal do
Amazonas, Instituto de Ciências Biologicas, Manaus AM - Brazil <ronis@ufam.edu.br.>.
In the same region between September and October 2005,
we had located 56 nests (50% M. niger) along the shores
of 13 water bodies. Some (28%) of these nests had been
predated, mostly by local people, 3% had already hatched
and the rest contained eggs.
NESTING OF MELANOSUCHUS NIGER AND
CAIMAN CROCODILUS IN THE PIAGAÇU-PURUS
SUSTAINABLE
DEVELOPMENT
RESERVE,
CENTRAL AMAZONIA, BRAZIL. Between 25
November and 10 December 2006, we were in the
Piagaçu-Purus Sustainable Development Reserve (PPSDR) to locate caiman nesting areas. We searched for
Melanosuchus niger and Caiman crocodilus nests along
the shores of 25 waterbodies (24% already visited in 2005),
We found caiman nests in all waterbodies searched in 2005
and 2006, indicating that the area is widely used by M.
niger and C. crocodilus for breeding. Less than one-third
of the nests had been predated, and based on interviews
with local people we found that caiman eggs are mostly
collected incidentally when nests are encountered during
other activities (ie fishing or timber extraction). We did
not observe any commercial trade for caiman eggs in the
lower Purus region, and people use them principally for
subsistence.
8
Although the human influence on the fate of nests is low,
and probably does not affect the overall hatchling success
of either species, there is intensive hunting pressure on
adult female caimans in the PP-SDR. Nevertheless, most
of the hunted caimans are sub-adults which have not
reached the size of sexually mature individuals.
the Ministry of the Environment (MINAMB).
In the PP-SDR, discussions on a future harvesting
program of crocodilians are being carried out with local
stakeholders (hunters, traders, local authorities, etc.)
involved in the meat trade. The protection of nesting
areas and consequently breeding females, will be an
important factor to achieve a sustainable management of
crocodilians in the PP-SDR.
Acknowledgements
Financial support was provided by grants from Brazilian
Conselho Nacional de Desenvolvimento Científico
e Tecnológico (CNPq) to Ronis Da Silveira (Proc.
482034/2004-1, Edital CNPq no. 019/2004 - Universal)
and by the Wildlife Conservation Society. Special thanks
to Ezequias Breláz for assistance with data collection,
John Thorbjarnarson for review of the manuscript, and to
all the inhabitants of the Piagaçu-Purus SDR.
Figure 1. Participants at Workshop on the Conservation
of the Orinoco Crocodile.
We are still working on the resolutions and recommendations
of the workshop, which will be organized as a “Strategy
for the Conservation of the Orinoco Crocodile”, but some
significant issues can be highlighted at this time.
Boris Marioni, Instituto Piagaçu Coordinator of Caiman
Project, Manaus - AM - Brazil, <bmarioni@piagacu.
org.br>; Eduardo Matheus von Mühlen, Instituto
Piagaçu, Coordinator of Wildlife Hunting Project,
<eduardo@piagacu.org.br>; and, Ronis Da Silveira,
Universidade Federal do Amazonas, Instituto de Ciências
Biologicas, Manaus - AM - Brazil <ronis@ufam.edu.
br>.
First of all, we have to recognize that the efforts
represented by the release into the wild of 5073 captivereared crocodiles have borne fruit, at least in the El Frío
Ranch and surrounding areas of Apure State, where
according to an unpublished report presented by José
Ayarzagüena, a small population of the species is now
established, with several females nesting every year.
However the consolidation and long-term viability of that
population requires the implementation of a permanent
program for monitoring and protection by MINAMB,
particularly in the Guaritico Wildlife Refuge, where there
is no presence of wildlife officials.
Venezuela
WORKSHOP III ON THE CONSERVATION OF
THE ORINOCO CROCODILE IN VENEZUELA.
Convened in San Carlos, Venezuela, on 18-19 January
2007, the general aim of the workshop was to analyze
activities undertaken over the last 30 years to improve
the population status of Crocodylus intermedius and to
evaluate successes and failures which could help in the
preparation of a new program to guide actions in the shortterm, to approach the final goal of complete recovery.
Secondly, the participants sent a message to local,
regional and national government authorities calling to
their attention the environmental situation of the Cojedes
River, where the largest known population of the Orinoco
crocodile is found. The degradation of the ecological
integrity of this river, affected by several factors such
as sewage and industrial discharge, canalizations and
riparian forest destruction, as well as the direct impact on
crocodiles by illegal hunting and human depredation of
nests, have reduced the chances of long-term survival of
the species. Since 1992 the declaration of a protected area
in the Cojedes River, such as a wildlife reserve, has been
proposed. That proposal has the support of the GECV, but
after 17 years it has yet to be implemented.
The workshop was attended by 77 people from public
and private institutions and organizations, not only from
Venezuela but also from Colombia, USA and Europe.
The Venezuelan Crocodile Specialist Group (GECV) was
responsible for the organization of this event, which was
made possible due to the economic support of the Dallas
World Aquarium and the Wildlife Conservation Society.
Among the participants were 27 representing universities
and research institutions, 11 from NGOs, 7 from zoos,
and 22 from public institutions, most of them (17) from
It was clearly recognised that the population status of
the Orinoco crocodile is better than it was 30 years ago,
but the species is far from recovery. Although the release
9
of captive-reared Orinoco crocodiles will continue,
the emphasis of the strategy to be implemented in the
following years must be centered in the protection of the
remaining population and its habitats, working closely
with local people - without their participation any program
is doomed to failure.
The Croc Initiative received such a positive response
from conservationists and educators that a follow-up tour
of similar format has been organized by NGCI for March
2007. This initiative has been entitled “Save Asiaʼs Crocs”
and is tentatively planned for the cities of Singapore,
Bangkok and Chiang Mai (Thailand), Shanghai and
Beijing (China), and Seoul (South Korea).
Andrés E. Seijas, Grupo de Especialistas en Cocodrilos
de Venezuela (GECV), <aeseijas@cantv.net>.
Dr. Brady Barr, <Bradybarr@aol.com>.
Brunei
East and Southeast Asia
Fauna and flora surveys undertaken in 2000 and 2001
in the Pulau Selirong Forest Recreation Park (PSFRP)
documented the occurrence of the Saltwater crocodile
(Crocodylus porosus) (Charles 2002). On 23-29 May
and 8-19 July 2006 systematic surveys of crocodiles
were undertaken by Jack Cox and Forestry Department
personnel, in PSFRP and other areas of Brunei Bay,
northeastern Brunei Darussalam (Cox 2006) (Fig. 1).
ASIAN CROC CONSERVATION AND EDUCATIONAL
INITIATIVE. In August 2006, National Geographic
Channels International (NGCI) funded a 6 country tour
to promote crocodile conservation and education. The
1-month tour involved educational lectures at zoological
facilities, museums, and universities, for local school
children (Fig. 1). The series of lectures reached over
5000 students across the 6 target countries, and was
covered by over 100 media interviews. Dr. Brady Barr,
National Geographicʼs resident herpetologist and former
US public school educator, conducted the informative
lectures for the children, and in conjunction with local
zoos provided hands-on encounters with representatives
of Asiaʼs crocodilians.
Figure 1. Dr. Brady Barr provides hands-on encounter
with a crocodile for school children at Zoo Negara,
Malaysia.
The emphasis was on education and conservation of Asian
crocodile species, most notably the Chinese alligator
(Alligator sinensis), false gharial (Tomistoma schlegelii),
and the Philippine crocodile (Crocodylus mindorensis).
Locations for the event included: Zoo Negara (Malaysia),
Taipei Zoo, National Taiwan Normal University (Taiwan),
Taman Safari Wildlife Park (Indonesia), Singapore Zoo
(Singapore), Hong Kong Wetland Park, and Oceans Park
(Hong Kong).
Figure 1. Southeastern coast and interior of Brunei Bay,
Brunei Darussalam. Night count routes (dotted lines)
and crocodiles sighted (dots and age class code) are
included for rivers/tributaries surveyed north of the
partly depicted Temborong River system. Survey
numbers refer to location sequence in Table 1 in Cox
(2006).
10
Fig. 2), suggesting small breeding units persist there. Most
crocodiles encountered were wary and did not allow a
close enough approach to estimate size (59% eyes only).
Pulau Selirong is a near-pristine 2566 ha island of
conserved mangrove communities in Brunei Bay. No
evidence of crocodiles was found at Pulau Selirong
during the 2006 surveys, but C. porosus were recorded in
low numbers in most rivers of Brunei Bay (0.33 ind/km;
34 crocodiles in 103.5 km; Table 1, Fig. 2).
The effect on local populations of historical and allegedly
recent hunting for skins is undocumented, but has probably
reduced abundance. The dominant mangrove-nipah
forest edge and littoral in the middle and lower reaches
of surveyed rivers is largely undisturbed. Outside Pulau
Selirong, sustainable harvesting of mangrove poles and
timber is permitted inland, and fishing with nets during
the day and spears at night is widespread but infrequent.
Good potential exists to rehabilitate the crocodile resource
in Brunei Bay through a suggested course of conservation,
ecotourism and sustainable utilisation.
Acknowledgements
The authors are grateful to Forestry Department staff for
their unstinting effort to facilitate conduct of surveys, to
Charlie Manolis (CSG Regional Chairman for Australia
and Oceania) for helping draft this article, and Masakazu
Kashio (Food and Agriculture Organization of the UN,
Bangkok) for requesting arrangements for the surveys.
Literature
Figure 2. Abdul Qawi (Forestry field staff) and juvenile
C. porosus.
Charles, J. (2002). Pulau Selirong - a forest reserve and
an ecotourist destination. Pp. 71-74 in Treasures
Unknown: Proceedings of the Experts Consultative
Meeting on Managing Pulau Selirong Forest
Recreation Park. Forestry Department: Brunei.
Hatchlings (N= 2) and yearlings (N= 4) were sighted in
the Duwau Besar, Temborong and Labu Rivers (Table 1;
Cox, J. (2006). Initial Surveys of Crocodiles and Habitat
at Pulau Selirong Forest Recreation Park and Other
Areas of Brunei Bay, Brunei Darussalam, May and
Table 1. Crocodile night counts in the Pulau Selirong area, Brunei, May and July 2006. Replicate surveys are shown in
italics, and numbers were excluded from totals. Surveys undertaken under unsuitable conditions are not shown [see
report (Cox 2006) for complete details].
Location
Date of
Survey
Sg. Temburong
Sg. Temburong
Sg. Mataiang
Sg. Mataiang
Sg. Raya/Palu Palu
P. Selirong NW coast
Sg. Bangau/Aloh Besar/Melimbai
Ma. Aloh Besar - Tj. Lumba Lumba
Sg. Duwau Besar
P. Selanjak/P. Tarap
Sg. Batu Apoi
Sg. Labu
27 May
15, 17 July
26 May
13 July
28 May
28 May
11 July
11 July
12 July
14 July
15 July
16 July
Totals
Adults
Juveniles Yearlings Hatchlings
Eyes
Only
Survey Encounter
Distance
Rate
(km)
(ind/km)
1
1
0
0
0
0
0
0
0
0
0
0
2
2
0
0
0
0
1
0
2
0
2
0
1
2
0
0
0
0
0
0
2
0
1
0
0
0
0
0
0
0
0
0
1
0
0
1
6
4
0
0
0
0
2
0
5
2
4
1
20.5
20.5
3.7
3.7
9.3
2.2
9.9
3.7
9.6
8.4
15.3
20.5
0.49
0.44
0.0
0.0
0.0
0.0
0.30
0.0
1.04
0.24
0.46
0.10
1
7
4
2
20
103.5
0.33
11
July 2006. Technical Report for Forestry Department,
Ministry of Industry and Primary Resources, Brunei
Darussalam.
•
Noralinda Ibrahim, Forestry Department, Ministry
of Industry and Primary Resources, Jalan Mentari
Besar, Bandar Seri Begawan, Brunei Darussalam
BB3910, <linda8forestry@gmail.com>; and, Jack Cox,
2919 Colony Road, Charlotte, NC 28211-2635, USA,
<jackcoxjr@yahoo.com>.
•
•
northern Luzon, to inspect some of the work
being undertaken by the Crocodile Rehabilitation,
Observance and Conservation Project (CROC) in
Isabela (see front cover);
Davao, on the southern island of Mindanao, to inspect
crocodile farms (Fig. 1) and privately-owned release
sites for C. mindorensis (Fig. 2); and,
Coral Farms, owned by William Belo, just outside
Manila.
[The full report is available at www.wmi.com.au/
csgarticles].
Philippines
The Forum on Crocodiles in the Philippines was convened
at the National Museum of the Philippines, Manila, between
31 January and 2 February 2007, with 103 participants
from 13 countries attending. Participants represented
government and non-government organisations, industry,
universities, independent researchers and the Crocodile
Specialist Group.
Figure 1. Participants of field trip to J.K.Mercado & Sons
Agricultural Enterprises. The Forum on Crocodiles
in the Philippines attracted international participants
from Australia, USA, Papua New Guinea, Japan,
France, Cambodia, Malaysia, Hong Kong, Thailand,
Norway, Indonesia and the Netherlands.
The Forum was hosted by Crocodylus Porosus
Philippines Inc. (CPPI), Veterinary Office of the City
of the Philippines, Silliman University and the National
Museum of the Philippines, who are congratulated for
instigating this meeting. Special thanks go to Vic and
“Toy” Mercardo, William Belo (CPPI), Dr. Angel C.
Alcala and Charles A. Ross (Silliman University), and
Dr. Corazon S. Alvina (National Museum).
Over the course of the first two days, some 30 papers and
a series of posters were presented, covering both species
of local crocodiles, Crocodylus mindorensis and C.
porosus, and a range of associated crocodilian activities
within the Philippines. It is anticipated the Proceedings
will be published around August/September 2007.
A central goal of the meeting was to reach consensus on a
series of issues related to the conservation, management
and sustainable use of crocodiles in the Philippines.
This was achieved through four well-attended series of
workshops, which drafted 7 resolutions, subsequently
discussed and modified in a plenary session. The final
resolutions were agreed by consensus with no formal
objections, and together, they form an important and
updated road map for crocodiles in the Philippines. The
resolutions are included here (see later).
Figure 2. J.K. Mercado marsh land, a potential release
site for C. mindorensis in Mindanao. Photograph:
Tom Dacey.
Many of these sites appear ideal for the release of C.
mindorensis into the wild, and the Mercardo family are to
be congratulated for acquiring suitable habitat at their own
expense (Fig. 2), specifically to contribute to conservation
of the critically endangered, endemic crocodile.
During the course of the Forum, participants also
enjoyed the local Filipiniana cuisine, cultural dancing
by traditional dancers from Isabela State University, and
viewing of crocodilian artefacts at the National Museum.
On the final night the Mercado family hosted their guests
with a wonderful banquet of whole roasted lamb, pig and
forequarter of bullock, cultural dancing and a live band.
Following the Forum, field trips were conducted to:
12
Resolution No. 1.1 (adopted 2 February 2007)
Next presented is the need to tap the resources and solicit
the efforts of the business, educational, governmental and
labor sectors and the local and international non-government
organizations and the media to support strengthening
crocodile conservation programs in the Philippines.
A RESOLUTION ENCOURAGING THE LOCAL
GOVERNMENTS THROUGH THEIR RESPECTIVE
LOCAL SCHOOL BOARDS TO FACILITATE THE
INTEGRATION OF THE CROCODILE CONSERVATION
PROGRAMS IN SCHOOL CURRICULA.
1. WHEREAS, crocodiles play an important role in the
ecosystem;
1. WHEREAS there is a need to increase awareness of school
children on the importance of crocodile conservation in
our ecosystem and the role that they could play in the
success of the conservation activities/efforts.
2. WHEREAS, contrary to popular beliefs and
concepts, crocodiles, other animals and humans can
live harmoniously together to maintain a balanced
ecosystem;
2. WHEREAS, the children are considered as the future
caretakers and beneficiaries of a healthful and balanced
ecology;
3. WHEREAS, the Philippines should protect its
crocodiles, the endemic Philippine crocodile Crocodylus
mindorensis and the Indo-pacific (saltwater) crocodile
Crocodylus porosus;
3. WHEREAS, the integration of programs on crocodile
conservation and sustainable use in school curricula
will serve as a means to develop positive attitudes
among school children to respect and value crocodiles
as an important component of the ecosystem and as a
valuable renewable natural resource;
4. WHEREAS, people from all sectors of society can
help in the effort to save these endangered crocodilian
species;
5. WHEREAS, the media and other agencies and
organizations can play an important role to save these
species from extinction in the Philippines;
4. WHEREAS, school children should be informed that
crocodiles, which are part of our cultural and natural
heritage, can co-exist with humans and that they are
something to be proud of;
6. WHEREAS, the government agencies should support
conservation activities and efforts by streamlining
processes related to crocodile conservation;
5. WHEREAS, through the integration program, the
value of crocodile conservation shall be developed and
instilled in their young minds;
NOW THEREFORE, Be it as it is;
6. WHEREAS, the local governments, through the local
chief executives, have the mandate to empower their
constituents to address general welfare;
1. HEREBY RESOLVED, to encourage all sectors of
the society to support the strengthening of crocodile
conservation programs within the Philippines;
NOW THEREFORE, Be it as it is;
2. RESOLVED FURTHER, to forward copies of this
resolution to all national and local government
agencies, the business sectors, local and international
non-government organizations focused on wildlife
conservation, the academe, the mass media and other
cause-oriented private groups for their information,
support and active participation.
............................................
1. HEREBY RESOLVED, to encourage the local
governments through their respective Local School
Board to facilitate the integration of the crocodile
conservation programs in school curricula;
2. RESOLVED FURTHER, to forward copies of this
resolution to the Local Chief Executives through their
respective Local School Boards for his/her appropriate
and favorable action; likewise, to furnish copies of the
same to the Department of Education through channels,
Department of Environment and Natural Resources
through channels, the Crocodylus Porosus Philippines,
Inc. etc, etc. for their support and endorsement.
............................................
Resolution No. 1.3 (adopted 2 February 2007)
A RESOLUTION PROPOSING FOR A SYSTEMATIC
COOPERATION REGARDING THE CONSERVATION
OF THE CROCODILE AND ITS NATURAL HABITAT
IN LIGUASAN MARSH.
1. WHEREAS there is limited information on wild
crocodilian species in Mindanao, particularly in
Liguasan Marsh.
Resolution No. 1.2 (adopted 2 February 2007)
A RESOLUTION ENCOURAGING ALL SECTORS OF
THE SOCIETY TO SUPPORT THE STRENGTHENING
OF THE CROCODILE CONSERVATION PROGRAMS
WITHIN THE PHILIPPINES.
2. WHEREAS, the Liguasan Marsh in Mindanao has
been identified as an important area where both the C.
porosus and C. mindorensis are known to occur;
13
3. WHEREAS, the University of Southern Mindanao is
located Northeast of Liguasan Marsh and is interested
in developing a research and conservation project for
the two crocodilian species in their natural habitats;
3. WHEREAS, there is a need to seek the assistance of
the DENR through the PAWB to expedite the head-start
program by the immediate granting of the necessary
permits;
4. WHEREAS, there is considerable experience with
crocodile research and conservation in Northeastern
Luzon by a consortium of organizations coordinated by
the Mabuwaya Foundation, Inc.;
NOW THEREFORE, Be it as it is;
1. HEREBY RESOLVED, to earnestly request Sec.
Angelo M. Reyes, DENR Secretary, through Director
Mundita S. Lim, PAWB, to issue a gratuitous permit for
the head-start program of the Mabuwaya Foundation,
Inc in cooperation with the LGU of San Mariano,
Isabela and other stakeholders;
NOW THEREFORE, Be it as it is;
1. HEREBY RESOLVED, to appoint Dr. Cayetano
Pomares (USM) and Dr. Andres Masipiquena
(Mabuwaya Foundation) to establish systematic
cooperation regarding the conservation of the crocodiles
and their natural habitats in Liguasan Marsh in coordination with DENR;
2. RESOLVED FURTHER, to forward copies of this
resolution to the Hon. Secretary Angelo M. Reyes,
DENR and Director Mundita S. Lim, PAWB for their
information, support and favorable action; likewise, to
furnish copies of the same to the local government of
San Mariano, Isabela and the Mabuwaya Foundation,
Inc. for their information and appropriate action;
............................................
2. RESOLVED FURTHER, to request relevant government
organizations,
funding
agencies,
conservation
organizations and business operators to support the
important crocodile research and conservation project
in Liguasan Marsh in terms of permits, support and
funding;
Resolution No. 1.5 (adopted 2 February 2007)
A RESOLUTION TO REINTRODUCE CAPTIVE-BRED
CRODODYLUS MINDORENSIS TO LAKE DICATIAN
IN DIVILACAN, ISABELA IN COOPERATION WITH
PAWB, NSMNP - DFI, MABUWAYA FOUNDATION,
PWRCC, AND LOCAL GOVERNMENT UNITS IN
2007.
3. RESOLVED FURTHER, to forward copies of this
resolution to the Crocodile Specialist Group, University
of Southern Mindanao, the local government units
located within Liguasan Marsh for their information,
support and active participation; likewise, to furnish
copies of the same to the local government of San
Mariano, Isabela and the Mabuwaya Foundation, Inc.
for their information and support; and to furnish copies
of the same to the DENR, the Philippine Crocodile
National Recovery Team, other relevant government
organizations, conservation organizations and possible
donors for their information, support and action;
............................................
1. WHEREAS C. mindorensis has been extirpated or
occurs in extremely small numbers threatening its
ability to reproduce in most areas in the country it used
to occupy;
2. WHEREAS there is available supply of captive-bred
crocodiles for release into the wild;
Resolution No. 1.4 (adopted 2 February 2007)
3. WHEREAS there is an urgent need to prevent extinction
of C. mindorensis throughout the Philippines
A RESOLUTION EARNESTLY REQUESTING HON.
ANGELO M. REYES, DENR SECRETARY, THROUGH
DIRECTOR MUNDITA S. LIM, PROTECTED AREAS
AND WILDLIFE BUREAU TO ISSUE A GRATUITOUS
PERMIT FOR THE HEAD-START PROGRAM OF THE
MABUWAYA FOUNDATION, INC. IN COOPERATION
WITH THE LOCALGOVERNMENT OF SAN MARIANO,
ISABELA AND OTHER STAKEHOLDERS.
4. WHEREAS, this trial release provides a unique
opportunity to gather the necessary scientific information
that will be essential for an effective reintroduction
program of C. mindorensis throughout the Philippines;
5. WHEREAS, Lake Dicatian in Divilacan, Isabela
has been identified as a suitable release site for C.
mindorensis;
1. WHEREAS, the Philippine crocodile population in the
municipality of San Mariano, Isabela is still critically
small;
NOW THEREFORE, Be it as it is;
1. HEREBY RESOLVED, to request Dr. Mundita Lim
(Protected Areas and Wildlife Bureau), Dr. Restituta
Antolin (Wildlife Division Chief, PAWS-Region
2), Dr. Andres Masipiquena (President, Mabuwaya
Foundation), Mrs. Erlinda Domingo (Chairman of
the Northern Sierra Madre Natural Park Development
2. WHEREAS, to ensure the rapid recovery of the
species, the local government has adopted a head-start
program of the Mabuwaya Foundation, Inc. (Attached
is Resolution No. ___ and copy of the proposal forming
part of this resolution);
14
Foundation), and Dr. Glenn Rebong (Project Director,
Palawan Wildlife Rescue and Conservation Center) to
arrange a systematic cooperative scheme for the reintroduction of captive-bred C. mindorensis to Dicatian
Lake in Divilacan, Isabela;
and Conservation Center) to arrange a systematic
cooperative scheme for the re-introduction of captivebred C. mindorensis to Lake Pinamaloy, Bukidnon,
Pagatban River in Negros Oriental and Pag-asa Farms,
Feeder Road 8 in New Katipunan, Sto. Tomas, Davao
Del Norte.
2. RESOLVED FURTHER, to request relevant
government
organizations,
funding
agencies,
conservation organizations and private sector to support
the re-introduction of crocodiles in Dicatian Lake in
Divilacan, Isabela;
2. RESOLVED FURTHER, to request relevant
government
organizations,
funding
agencies,
conservation organizations and private sector to support
the re-introduction of crocodiles in Lake Pinamaloy,
Bukidnon, Pagatban River in Negros Oriental and
Pag-asa Farms, Feeder Road 8 in New Katipunan, Sto.
Tomas, Davao Del Norte.
3. RESOLVED FURTHER, to forward copies of this
resolution to the Crocodile Specialist Group, the
municipal government of Divilacan for their information,
support and active participation; likewise, to furnish
copies of the same to the Mabuwaya Foundation, Inc.
for their information and support; and to furnish copies
of the same to the DENR, the Philippine Crocodile
National Recovery Team, other relevant government
organizations, conservation organizations and possible
donors for their information, support and action;
............................................
3. RESOLVED FURTHER, to forward copies of this
resolution to the Crocodile Specialist Group, for
their information and support; and to furnish copies
of the same to the DENR, the Philippine Crocodile
National Recovery Team, other relevant government
organizations, conservation organizations and possible
donors for their information, support and action;
............................................
Resolution No. 1.6 (adopted 2 February 2007)
Resolution No. 1.7 (adopted 2 February 2007)
A RESOLUTION TO REINTRODUCE CAPTIVEBRED CROCODYLUS MINDORENSIS TO SELECTED
AREAS WHERE THEY WERE FOUND BEFORE
PARTICULARLY IN LAKE PINAMALOY IN
BUKIDNON, PAGATBAN RIVER IN NEGROS
ORIENTAL AND PAG–ASA FARMS IN FEEDER ROAD
8 IN NEW KATIPUNAN, STO. TOMAS, DAVAO DEL
NORTE.
A RESOLUTION AIMED AT IMPROVING LEGAL
AND ADMINISTRATIVE ISSUES ASSOCIATED WITH
CROCODILE CONSERVATION, MANAGEMENT AND
SUSTAINABLE USE IN THE PHILIPPINES
1. WHEREAS, crocodiles in the Philippines (Crocodylus
porosus and Crocodylus mindorensis) are critically
endangered. Crocodiles are protected by law (R.A.
9147). In practice, however, indiscriminate hunting,
unsustainable fishing methods, destructive land use
practices and illegal logging continue to threaten
crocodiles in the wild and destroy the resource base
of poor rural communities. There is an urgent need
to strengthen law enforcement, particularly in remote
areas where crocodiles survive in the wild.
1. WHEREAS C. mindorensis has been extirpated or
occurs in extremely small numbers threatening its
ability to reproduce in most areas in the country it used
to occupy;
2. WHEREAS, there is available supply of captive-bred
crocodiles for release into the wild;
2. WHEREAS, Local Government Units (LGUs) are
pivotal in effective environmental conservation at the
local level. The devolution of authority over natural
resources to the provincial and municipal government
can strengthen in-situ crocodile conservation.
3. WHEREAS, there is an urgent need to prevent extinction
of C. mindorensis throughout the Philippines
4. WHEREAS, the general public needs, including
students at all educational levels, to be educated on
crocodile conservation, management and sustainable
use of wildlife;
3. WHEREAS, the world has increasingly recognized that
research, development and innovation are major drivers
of economic growth. Delays in permitting procedures
for bureaucratic rather than conservation purposes is a
serious constraint on Philippine researchers to compete
and lead internationally.
5. WHEREAS, the areas mentioned have no more
crocodiles based on current knowledge but have been
judged to be suitable release areas for C. mindorensis;
NOW THEREFORE, Be it as it is;
4. WHEREAS, bureaucratic procedures and permitting
requirements constrain effective in-situ crocodile
conservation.
1. HEREBY RESOLVED, to request Dr. Mundita Lim
(Protected Areas and Wildlife Bureau) and Dr. Glenn
Rebong (Project Director, Palawan Wildlife Rescue
5. WHEREAS, commercial crocodile farming has been
15
encouraged by the government over the past years.
This has resulted in the incorporation of Crocodylus
Porosus Philippines Inc. (CPPI) which currently has six
cooperators and is considered as industry pioneers with
the sole purpose of farming C. porosus for commercial
purposes.
6. DEMAND an immediate halt to the export of live C.
porosus for commercial purposes deemed to compete
with the crocodile industry in the Philippines;
7. RE-EVALUATE NRDCʼs supervision of commercial
use and export of farmed C. porosus with a view
to rationalizing their role or possibly transferring
commercial crocodile farms under the jurisdiction of
DA.
6. WHEREAS, commercial crocodile farming can
strengthen in-situ crocodile conservation efforts
through educating people about crocodiles, mobilizing
public support and generating revenues for conservation
action. CPPI considers the in-situ conservation of
C. mindorensis and C. porosus as one of its main
responsibilities.
PHILIPPINE CROCODILE CHRONICLES. The
following excerpt was provided by Corazon Alvina. It
is taken from “The Philippine Chronicles of Fray San
Anonio”, and is a translation from the Spanish by D. Pedro
Picornell of Book I of “Cronicas de la Provincia de San
Gregorio Magno” by Fray Juan Fransisco de San Antonio.
Printed in Casalinda and Historical Conservation Society,
Manila (1977). It provides some interesting observations
and information on crocodiles in the Philippines in the
1700s.
7. WHEREAS the export of live C. porosus for commercial
purposes may threaten the competitiveness of the
pioneering Philippine crocodile industry.
8. WHEREAS the National Resource and Development
Corporation (NRDC) currently competes with the
private crocodile industry by exporting live C. porosus,
a violation of its legal mandate.
“152. The swordfishes .......... It is a particular enemy
of the crocodiles and he usually take the best part of his
battles with them. The experienced Indians (who have
given great attention to thee battles) say that God has
given these fishes the same instinct that (according to the
authors) the dolphin has to fight the crocodiles (which are
similar to ours) in directing their swords to the only spot
on them known to be vulnerable. Much ..........
NOW THEREFORE, Be it as it is;
That Participants:
1. URGE the Department of Environment and Natural
Resources (DENR) at the national (PAWB), regional
(PAWS) and local level (CENRO) to effectively
implement
existing
environmental
legislation
conserving crocodiles and their habitat;
153. The natives call the crocodile “boaya” and I believe
it to be the most horrible, voracious and formidable
among the beast. It is amphibious and can live in water
as well as on land, and the damage it does on animals and
men is the same in both of these elements. Some authors
believe that this is the crocodile described by Pliny, and
even if this is so, the ones we have here are more varied
because we have them longer than twenty elbows which
is the limit given by Pliny. It looks like a big lizard with a
tail which is wider than round, which differentiates it from
the land lizard. It has short arms and legs with hands and
large claws. It has a varied size of head, a long pointed
snout, and when it opens its mouth (in some of them), a
man can stand in it. It has ferocious teeth, all of them
incisors and those of the upper jaw fit into those of the
lower jaw. The top of its whole body is armored with very
tough and strong scales. It has only two eyes in the place
common to animals, and although it has been said that it
has two more eyes towards the gills, this is not so. There
you can see small black bones with eyebrows as if these
were painted on, which look like real eyes, but these are
neither eyes as some would have there to be, nor nostrils
as others infer; as there are neither apertures nor the
parts required for eyes at these spots. These small black
bones (especially the left ones) are carefully removed by
the Indians because they smell like good quality musk.
Musk is not found in any other place and the belief that
2. REQUEST the PAWB to review the policies with a
view to delegate the issuance of necessary domestic
permits for effective crocodile conservation action from
the national office to the regional offices of DENR as
stipulated in DAO 55-2004;
3. SUGGEST simplifying and streamlining existing
bureaucratic procedures for the issuance of permits for
academic research strengthening in-situ conservation
of crocodiles in the Philippines;
4. URGE the DENR to streamline the bureaucratic process
with regards to the issuance of permits to the Philippine
crocodile industry, and significantly simplify legal
requirements for compliance and shorten the processing
time;
5. ESTABLISH a taskforce for a period of 3 months
consisting of representatives of the Department of
Agriculture (DA), the DENR, and the private sector
to work out specific details on (1) the simplification of
processes of issuing permits to the crocodile farming
industry and (2) the sharing of jurisdiction over
crocodile farms between DENR and DA, and (3) the
preparation of a manual on regulations pertaining to
crocodiles;
16
the musk pockets are found in the armpits or gills can be
discarded. I have gotten this information from someone
who has lived all his life in the swamps among crocodiles
and has seen very much of their anatomy in many smaller
ones he has captured alive and other larger ones which
he has killed with the help of his companions.
Indians are not afraid of it, but some pay with their lives
for being continuously careless or because of not being
afraid of them. Some very brave Indians have fought
these animals hand to hand, killing them and rescuing
their victims from their claws or teeth. It is common to
trap them with a noose, using little live dogs, which they
like very much, as bait. Many are caught in this manner,
but many more abound in the rivers and along the shores,
and man and animals are not safe wherever they happen
to live.”
154. It is definite that crocodiles do not have a tongue.
However, I am told that a crocodile who had swallowed
a man whole and was later followed and killed, the man
being found complete in its stomach, had a large black
tongue. It is not known whether this is because it was of
a special type, ir because it was the strangest one seen
by my informant during his whole life. This happened in
1736 in the Macabebe River in Pampanga. The man who
was thus swallowed was Captain Culango who owned a
tavern in the village called Manlauay, well known by the
natives.
Copy of article provided by Dr. Corazon Alvina, National
Museum, Manila, Philippines.
Thailand
PILOT
REINTRODUCTION
OF
SIAMESE
CROCODILES. A priority of crocodile management in
Thailand is the reintroduction of pure Siamese crocodiles
(Crocodylus siamensis) from captive breeding facilities
within the country. The first reintroduction took place
following habitat surveys in the historical range of the
species, public hearings and education, training of park
rangers, selection and preparation of pure and healthy
animals, and acclimatization before their release.
Monitoring released crocodiles was an important element
of the program.
155. As to whether both the male and the female come
out onto dry land with equal frequency, I can say that it is
the female that comes out most. It runs with an incredible
ease, considering its great bulk, but it has difficulty in
turning or going sideways. The male also comes out but
only at night - to cohabitate. It cannot go too far because
its scrotum impedes its movement. Because of its size, and
because the crocodileʼs arms and legs are so short, it is
dragged along the ground and it hurts the beast. This has
been observed by more than one of the natives.
Siamese crocodiles were previously reported as being
extinct from the wild in Thailand, but no serious
surveys had been carried out. I reported several remnant
populations scattered in protected areas (CSG Regional
Meeting, China, 2001), and habitat surveys in 2004
updated the number of wild crocodiles to around 100
individuals in 5 surveyed habitats (see below). These
populations were able to survive in these protected areas,
which had limited carrying capacity. Siamese crocodiles
prefer open water such as lakes or reservoirs over a
watershed or small creek/canal in the deep forest, but
high human population in Thailand has resulted in less
than 10% of land being protected. All low lying areas are
used for agriculture, logging and human habitation.
156. The ability of these animals to breed is unbelievable.
Their fertility is such that they lay eggs frequently,
hatching fifty or sixty small crocodiles at a time. At
this rate, all the rivers in these islands would become
impassable, were it not for Divine Mercy which has acted
to prevent this evident harm. The voracity of the mother
is such that, when the small ones can fend for themselves
(this being on land where the egg hatch), the mother
places herself on the path they have to take to get to the
water, and, with an open mouth, swallows them one by
one as they instinctively walk to the water. Only the ones
who have casually deviated from this path are saved and
thus, very few survive so that man can live without so
many dangers.
The five surveyed habitats were Kaeng Krachan National
Park, Tarutao National Park, Khao Ang Lue Nai Wildlife
Sanctuary, Phu Kieow Wildlife Sanctuary and Pang Sida
National Park. Kaeng Krachan NP in western Thailand
is the most suitable habitat with the largest crocodile
population. Tarutao NP in southern Thailand is the third
largest island in the Andaman Sea. The survey reported
only a remnant population of Saltwater crocodiles (C.
porosus) around the mangrove forest, but no C. siamensis
in the freshwater habitat on the island. Khao Ang Lue Nai
Wildlife Sanctuary in southeast Thailand is the largest
lowland forest in the country. The survey found only one
adult Siamese crocodile in a small pool during the dry
season [CSG Newsletter 20(4): 78]. The habitat is highly
157. Another thing that the Providence of God has
provided against their voracity is that these animals do
not have the natural organs for the elimination of waste
found in animals living on land. This lengthens the time
needed for digestion and it is not hungry enough to force
him to attack man frequently. If he gets anything in his
stomach that bothers him, he vomits it easily, but the usual
thing is for him to digest even bones. The only thing he
does not digest is human hair, and by counting the balls
of hair found in his stomach, one knows the number of
men who have died between his teeth. He is a very timid
beast in spite of his voracity and he runs away at sounds
made by or at shouts of men. Unless caught unaware, the
17
unsuitable for a crocodile population and there is a plan to
relocate this individual. Phu Kieow Wildlife Sanctuary is
situated in central Thailand and surveys found a remnant
population up in the water shed. There is still a question as
to whether the record of C. siamensis at high altitude (750
m above sea level) in Khao Yai NP involves a released
animal or a new population.
radio-telemetry may affect survival of the crocodiles, so
we did not use this technique.
The training for wildlife rangers was completed in
mid-2004, and included natural history of crocodiles,
importance of crocodiles in the ecosystem, safe handling
techniques for all-sized crocodiles, survey techniques and
field data collection.
Figure 1. Project sign in restricted area of Pang Sida
National Park.
Figure 2. Temporary enclosure in the study area for
acclimatization of crocodiles prior to release.
Pang Sida NP in eastern Thailand was chosen as the study
area for the pilot re-introduction project because there is
no human activity and there is sufficient suitable habitat
for a crocodile population. The park was designated as
World Heritage by UNESCO in 2005. The habitat survey
indicated suitable habitat for a small population of up to
100 crocodiles.
To avoid release of hybrid animals, crocodiles selected
for release were DNA tested (microsatellite technique)
by Kasetsart University in 2004. Dr. Parntep Ratanakorn
checked the health of the crocodiles to guarantee that
they were disease-free. Acclimatization of the two groups
of crocodiles for three months before their release in
February 2005 and October 2006 respectively (Fig. 2),
showed excellent survival skills such as finding and
capturing prey, seeking shelter and avoiding natural
predators, including humans.
Following the initial release of 10 captive-raised juvenile
crocodiles in early 2005, park rangers often spotted two
crocodiles within 1 km of the release sites, indicating a
20% MKA survival index. The other 8 crocodiles were
never sighted after release. This indicated that either
more effort was needed for monitoring or the area was
not suitable. Villagers downstream did not report any
crocodile sightings.
Not withstanding the low survival rate for the first reintroduction, public acceptance and continuation of the
project for annual release will ensure the re-establishment
of a crocodile population from a re-introduction program
in the long-term. Once this project is allowed by
Government to release crocodiles in public lakes such as
Bung Borapet in Nakornsawan Province, the Thai Siamese
crocodile population will never be depleted again.
The local village is a partner in the project. Public hearings
and education were carried out in early 2004 to ensure
that crocodiles that escaped out of the protected area
were not captured. They promised to capture and hand
in any escaped crocodiles to the rangers. The villagers
have seen the increase in numbers eco-tourists since the
crocodiles were brought back to these areas.
Yosapong Temsiripong, CSG Regional Vice Chairman,
Crocodile Management Association of Thailand, Tel.:
+6681-9853832, <yosapong@srirachamoda.com>.
On 21 October 2006, a second group of 10 captiveraised juvenile crocodiles was released in the same area
(Wang Mon Pool). All crocodiles were microchipped for
identification. A monitoring program was established by
a graduate student at Kasetsart University, using camera
traps along the pool and creek. It was considered that
Indonesia
The report “A Short-term Assessment of the Conservation
Status of Tomistoma schlegelii (Crocodylia: Crocodylidae)
in Tanjung Puting National Park (Central Kalimantan,
18
Recent Publications
Indonesia)” (Auliya et al. 2006) is now available at the
CSG Tomistoma Task Force website (http://tomistoma.
org/pa_contents/2005surveys.html).
Thomas R. Rainwater, Ted H. Wu, Adam G. Finger,
Jaclyn E. Cañas, Lu Yu, Kevin D. Reynolds, Gopal
Coimbatore, Brady Barr, Steven G. Platt, George P.
Cobb, Todd A. Anderson and Scott T. McMurry (2006).
Metals and organochlorine pesticides in caudal scutes of
crocodiles from Belize and Costa Rica. Science of the
Total Environment 373: 146-156.
Undertaken in September-October 2005, the survey
confirmed previously (2002) documented high densities
of Tomistoma in the Tanjung Puting National Park, and
identified potential threats to the population.
Auliya, M., Schwedick, B., Sommerlad, R., Brend, S.
and Samedi (2006). A Short-term Assessment of
the Conservation Status of Tomistoma schlegelii
(Crocodylia: Crocodylidae) in Tanjung Puting National
Park (Central Kalimantan, Indonesia). A cooperative
survey by the Orangutan Foundation (UK) and the
Tomistoma Task Force of the IUCN/SSC Crocodile
Specialist Group. 36 pp.
Abstract: Despite high animal diversity in the Neotropics
and the largely unregulated use and disposal of pesticides
and industrial chemicals in Central America, few
data exist regarding accumulation of environmental
contaminants in Central American wildlife. In this study
we examined accumulation of metals and organochlorine
(OC) pesticides in caudal scutes of crocodiles from
Belize and Costa Rica. Scutes from Moreletʼs crocodiles
(Crocodylus moreletii) from two sites in northern Belize
were analyzed for metals, and scutes from American
crocodiles (C. acutus) from one site in Costa Rica were
analyzed for metals and OC pesticides. All scutes (n =
25; one scute from each of 25 individuals) contained
multiple contaminants. Mercury was the predominant
metal detected, occurring in all scutes examined from
both species. Other metals detected include cadmium,
copper, lead, and zinc. American crocodile scutes from
Costa Rica contained multiple OC pesticides, including
endrin, methoxychlor, p,p_-DDE, and p,p_-DDT, all
of which occurred in 100% of scutes analyzed (n = 6).
Mean metal and OC concentrations varied in relation
to those previously reported in crocodilian scutes from
other localities in North, Central, and South America.
OC concentrations in American crocodile scutes were
generally higher than those previously reported for
other Costa Rican wildlife. Currently, caudal scutes may
serve as general, non-lethal indicators of contaminant
accumulation in crocodilians and their areas of occurrence.
However, a better understanding of the relationships
between pollutant concentrations in scutes, internal
tissues, and environmental matrices at sample collection
sites are needed to improve the utility of scutes in future
ecotoxicological investigations.
Australia and Oceania
Australia
CROCODILE ASSISTS POLICE! Northern Territory
police had some unexpected help as they searched for a
man who was evading arrest. Police had visited the manʼs
house, at the small community of Naiyu, 360 km south
of Darwin, several times on 2 February, but each time
they approached the house the man ran away and hid in
vegetation along the banks of the Daly River. When he
tried to swim across the river that evening (around 2000
h), a crocodile bit him on the head and hand, inflicting
several puncture wounds and cuts.
The attack only lasted seconds, and the man estimated
the crocodile to be 3-4 m long. It is not clear whether
a Saltwater crocodile (Crocodylus porosus) or Australian
Freshwater Crocodile (C. johnstoni) was responsible for
the attack - both species occur in that section of the Daly
River - but based on size it was more than likely that it
was a Saltwater crocodile.
[Note: Rich Fergusson (CSG Regional Chairman for
Africa) has a report of an escaped convict in Mombasa,
Kenya, who chose a river as his escape route, but who not
as fortunate as the Australian man.]
[A PDF of this paper is available from Thomas Rainwater
at trrainwater@gmail.com].
Source: The Northern Territory News, 3 February 2007.
Anton D. Tucker, Colin J. Limpus, Keith R. McDonald
and Hamish I. McCallum (2006). Growth dynamics of
freshwater crocodiles (Crocodylus johnstoni) in the Lynd
River, Queensland. Australian Journal of Zoology 54:
409-415.
Science
Abstract. We analysed growth models for a population of
Australian freshwater crocodiles (Crocodylus johnstoni).
Competing growth models were tested with two data sets:
individuals of known-age, and growth interval data from
19
capture-recapture records. A von Bertalanffy function
provided the best empirical fit of several growth models.
The estimated asymptotic lengths (snout–vent length of
males = 125.3 cm; females = 97.4 cm) agreed well with
average lengths of the ten largest males and females in
the population. Sexual size dimorphism in this species
resulted from a combination of smaller mean length at
maturity for females and a subsequent decline in female
growth rate. Size dimorphism may result from individual
trade-offs in age v. length at maturity as a consequence of
sexual selection.
sharply among subadults, and increasing amounts of
aquatic gastropods and fish were recovered from this
size class. The adult diet consisted mainly of aquatic
gastropods, fish and crustaceans. Dietary diversity was
greatest among large juveniles and subadults. Conversely,
hatchlings and small juveniles had the most specialized
(least diverse) diet owing to a reliance on insects and
arachnids. Dietary overlap was greatest between adjacent
size classes, and lowest between the smallest and largest
size classes. We also provide field observations of preyspecific foraging behaviours.
Nicole M. Scott, Mark F. Haussmann, Ruth M. Elsey,
Phillip L. Trosclair III and Carol M. Vleck (2006).
Telomere length shortens with body length in Alligator
missippiensis. Southeastern Naturalist 5(4): 685-692.
Frank Seebacher and Shauna A. Murray (2007). Transient
receptor potential ion channels control thermoregulatory
behaviour in reptiles. PLoS ONE 2(3): e281.
Biological functions are governed by thermodynamics,
and animals regulate their body temperature to optimise
cellular performance and to avoid harmful extremes. The
capacity to sense environmental and internal temperatures
is a prerequisite for the evolution of thermoregulation.
However, the mechanisms that enable ectothermic
vertebrates to sense heat remain unknown. The recently
discovered thermal characteristics of transient receptor
potential ion channels (TRP) render these proteins
suitable to act as temperature sensors. Here we test the
hypothesis that TRPs are present in reptiles and function
to control thermoregulatory behaviour. We show that
the hot-sensing TRPV1 is expressed in a crocodile
(Crocodylus porosus), an agamid (Amphibolurus
muricatus) and a scincid (Pseudemoia entrecasteauxii)
lizard, as well as in the quail and zebrafinch (Coturnix
chinensis and Poephila guttata). The TRPV1 genes from
all reptiles form a unique clade that is delineated from the
mammalian and the ancestral Xenopus sequences by an
insertion of two amino acids. TRPV1 and the cool-sensing
TRPM8 are expressed in liver, muscle (transversospinalis
complex), and heart tissues of the crocodile, and have the
potential to act as internal thermometer and as external
temperatures sensors. Inhibition of TRPV1 and TRPM8
in C. porosus abolishes the typically reptilian shuttling
behaviour between cooling and heating environments,
and leads to significantly altered body temperature
patterns. Our results provide the proximate mechanism of
thermal selection in terrestrial ectotherms, which heralds
a fundamental change in interpretation, because TRPs
provide the mechanism for a tissue-specific input into the
animalsʼ thermoregulatory response.
Abstract: In Alligator mississippiensis (American
Alligator), body length increases with age, but body
length can be used as an accurate estimator of age only up
to about 6-7 years, when growth rates slow considerably.
Telomeres are repetitive DNA sequences that cap the ends
of each chromosome. Telomeres shorten with age in most
animals, but telomere shortening has not been examined
in reptiles. We measured telomere length in erythrocytes
of A. mississippiensis varying between = 5 and 240 cm in
body length and found a negative relationship between
telomere length and body length (P<0.01). Assuming
that erythrocyte telomeres continue to shorten with time,
even after growth rate declines, those individuals with
the shortest telomeres should be the oldest members of
the population. This method of estimating age, even in
animals of similar body size, should allow questions
about age structure and senescence to be addressed.
Steven G. Platt, Thomas R. Rainwater, Adam G. Finger,
John B. Thorjarnarson, Todd A. Anderson and Scott T.
McMurray (2006). Food habits, ontogenetic dietary
partitioning and observations of foraging behaviour of
Moreletʼs crocodile (Crocodylus moreletii) in northern
Belize. Herpetological Journal 16: 281-290.
We studied the food habits and size-related dietary patterns
of Moreletʼs crocodile (Crocodylus moreletii) in freshwater
wetlands of northern Belize (1992-2000). Crocodiles
(n= 420) were classified as hatchlings, small juveniles,
large juveniles, subadults or adults based on total length.
Stomach contents were obtained primarily by stomach
flushing. Prey items included aquatic and terrestrial
insects, arachnids, aquatic gastropods, crustaceans, fish,
amphibians, reptiles, birds, and mammals. Based on the
percent occurrence of recovered prey items, we concluded
that the smallest size classes feed largely on insects
and arachnids. Large juveniles broadened their diet to
include aquatic gastropods, crustaceans, fish and non-fish
vertebrates. Insect and arachnid consumption declined
Clara Lucía Sierra Díaz, Hovaimar Morelo Gutiérrez,
Yuraini López Solano and Antonio Luis Díaz González
(2007). Conserving Columbian mangroves and crocodiles.
The Sandwatcher 2(1): 5.
Started in the Caribbean in 1999, “Sandwatch” began as
an initiative of the United Nations Educational, Scientific
20
and Cultural Organization (UNESCO), through the
platform for Environment and Development in Coastal
Regions and Small Islands and the Associated Schools
Project Network. Sandwatch (www.sandwatch.ca/index.
htm) is now a global activity involving islands as far
away as Cook Islands in the Pacific, Seychelles in the
Indian Ocean, and the Bahamas in the Caribbean. It
seeks to modify the lifestyle and habits of children, youth
and adults on a community-wide basis, and to develop
awareness of the fragile nature of the marine and coastal
environment and the need to use it wisely.
Chair: Ralf Sommerlad (crocodilians@web.de)
Vice Chair: Akira Matsuda (akira@crocodilian.net)
Regional Chairs:
Australia: Charlie Manolis (cmanolis@wmi.com.au)
Europe: Colin Stevenson (coleosuchus@hotmail.com)
Indonesia: Mark Bezuijen (bezuijen@dodo.com.au)
Malaysia: Robert Stuebing (rs888@aol.com)
Remaining Southeast Asia: Uthen Youngprapakorn
(thutcroc@ksc.th.com)
USA: Bruce Shwedick (shwedick@aol.com)
Treasurer: J. Perran Ross (pross@wec.ufl.edu)
Officer for Illegal Trade Monitoring: Mark Auliya
(mark_auliya@myjaring.net)
Contributing Members:
Hellen Kurniati, Indonesia (hkurniati@yahoo.com)
Joon Soon Jong, Malaysia (jongss@hotmail.com)
Scott Pfaff, USA (spfaff@riverbanks.org)
Boyd Simpson, Cambodia (boyd1@ekit.com)
Joe Wasilewski, USA (jawnatsel@bellsouth.net)
Grahame Webb, Australia (gwebb@wmi.com.au)
The CSG-TTF is seeking more CSG members from the
Tomistoma range states as contributing TTF members.
Ralf Sommerlad, Rödelheimer Landstr. 42, 60487
Frankfurt, Germany, <crocodilians@web.de>.
Figure 1. Clara Lucía Sierra Díaz and Colombian students
at the Sandwatch Symposium in Trinidad and Tobago.
Photograph: Sandwatch.
Tomistoma Workshop
A Tomistoma Workshop is proposed to be held in Thailand,
on 20-22 September 2007. Details will be posted in the
CSG Newsletter as they are confirmed.
Colombian researchers and students (Fig. 1) participated
in the Regional Sandwatch Youth Symposium held in
Trinidad and Tobago, 4-6 December 2006. A summary
of the pilot Crocodylus acutus conservation program run
by Giovanni Ulloa and Clara Sierra (Fig. 1) in Cispatá
Bay, Colombia, is outlined in the latest Sandwatcher
newsletter.
Third International Workshop on
Crocodylian Genetics and Genomics
The Crocodile Specialist Group (CSG), Texas Tech
University (TTU), the Savannah River Ecology Lab
(SREL), La Autoridad Nacional del Ambiente de Panamá
(ANAM) and the Smithsonian Tropical Research
Institute (STRI) are pleased to announce and invite you
to participate in the Third International Workshop on
Crocodylian Genetics and Genomics, to be held at the
Smithsonian Tropical Research Institute in Panama City,
Republic of Panamá, 13-15 April 2007 (http://striweb.
si.edu/crocodile/index.html).
Raymond Hoser (2006). A case of “death by fur-ball”
in a young freshwater crocodile (Crocodylus johnstoni).
Herpetofauna 36(2): 122.
Reports the case of a 27 cm long pet freshwater crocodile
that died as a result of impaction in the stomach by a 3 x
1.8 cm fur-ball. The animal had been fed on the legs (fur
on) of dead mice for about 80 days.
Re-Organisation of
CSG-Tomistoma Task Force
The success of the previous two workshops, which
included contributors representing science, industry and
even business and the subsequent research projects that
they have spawned has expanded the range of topics
that we will be discussing for the Third International
Workshop. These will include molecular or biochemical
aspects regarding the:
Due to various changes, the CSG Tomistoma Task Force
has decided to re-organise itself. The current structure
now comprises:
21
1. Systematics and evolution of the Crocodylia;
2. Use of nuclear genes vs. mitochondrial genes in
crocodilian studies;
3. Population genetic analyses of crocodilians;
4. Genomic studies;
5. Gene expression studies and immunity systems of
crocodilians;
6. Crocodilian conservation biology and management
efforts; and,
7. The skin industry.
of the workshop not being finalized until recently. Thus,
we are trying to recruit participants for the workshop as
quickly as possible to take advantage of the chance to
hold such a meeting at STRI.
We look forward to your attendance and participation in
the Third International Workshop on Crocodylian Genetics
and Genomics and eagerly await your acceptance of this
invitation to attend.
We really need you to let us know if you plan to attend
by Friday, 9 February 2007. Please respond to Miryam
Venegas [dracoccodrilo@hotmail.com, venegasm@si.
edu; Fax: (507) 212-8790; Tel: (507) 212-8830]. Or feel
free to contact either Travis Glenn or Lou Densmore
at the phone numbers and/or e-mails listed below.
Additional meeting information will be provided soon
after 12 February 2007, when an initial tally of attendees
is completed, including a list of speakers and topics.
There will be several invited talks, but we would very
much like interested participants to present their research
in a regular 30 minute per talk session. There will also
be a poster session, which may be more appropriate for
some of the students who attend the meeting and would
also like to present their results.
Although the physical location of the meeting in Panamá
will facilítate participation by researchers from the
Caribbean (including Cuba), as well as South, Central
and North America, we anticipate workshop attendees to
come from around the world.
If there is not a strong enough response because of the
lateness of this notification, the meeting will be postponed
until the Fall of 2007.
Cost for Registration: Registration will be $US100 for
all professional crocodilian researchers, conservation
managers or industry workers, with graduate or
undergraduate students being allowed to attend for
$US25, with the accompanying signatures of their major
professors or departmental chairs.
Co-organizers of the Third International Workshop on
Crocodylian Genetics and Genomics, Dr. Llewellyn D.
Densmore (Lou.Densmore@ttu.edu; Tel. 1 806 7422728), Dr. Travis C. Glenn (glennt@biol.sc.edu; Tel. 1
803 725-5746), Aleida Salazar (a.salazar@anam.gob.
pa; Tel. (507) 742-2728) and Dr. Eldredge Bermingham
(bermingham@si.edu; Tel. (507) 212-8086).
Location: Talks and workshop sessions will be held at
the STRI Conference Center, located in Ancón, Panama
City.
CROCODILE POO AND ANCIENT MEDICAL
PRACTICES. As I was doing some research for a paper on
ancient medical practices, I came across some interesting
uses for crocodile excrement, including:
Accommodation: Hotel rooms for workshop participants
have been reserved at the Amador Country Inn Hotel.
Participants will be given a special meeting rate of $US65
+10% for 1 or 2 people, including breakfast. To get this
rate, reservations need to be made before 15 March 2007.
To make your reservations, please contact Ms. Vielka
Gutierrez [Tel: (507) 6677-4359; Fax: (507) 302-5426;
vielkag@unesa.com] and mention code cocodrilosSTRI.
1. Birth control: Medical papyri suggest two ways to
eliminate an unwanted pregnancy. One method was
to place crocodile excrement in the vagina. It is likely
that this prescription refers to a hardened plug of
dried dung inserted at the mouth of the uterus to block
the entrance of sperm, but the papyrus is not clear
(Thompson 2005). The Kuhun Papyrus, discovered in
1860, mentions various contraceptive methods used
in ancient Egypt, among which is the use of tampons
made with a paste of crocodile excrement, honey and
salt (Margolis 2004).
Transportation: COPA, the official Panamanian airline,
is offering a discount of 20% on plane tickets to workshop
participants. To get this discount, tickets need to be
purchased through a COPA travel office. Discounts will
not apply on tickets purchased through internet. Tickets
can be purchased at any time after 30 January 2007 please mention the code “cocodrilos-STRI”.
2. Anti-wrinkle Cream: The Greek physician Galen
invented the first skin moisturiser when he blended
olive oil with beeswax and added rose water. The
cream had a cooling effect on the skin and was a lot
more appealing than earlier anti-wrinkle recipes that
were based on crocodile excrement (Woodhead 2006).
In Egypt, crocodile excrement was also used in mud
baths (Price 2001).
We understand that this announcement is much later than
most people expect for an international workshop and it is
also later than we had hoped it would be. The opportunity
to hold this meeting at STRI arose last fall, but the logistics
of having this meeting in Panamá resulted in the details
22
3. Eye Ailments: Nunn (1996) noted that reptilian fluids
such as blood, excrement and fat were used extensively
in ancient Egyptian medicine. However, he found it
difficult to discern the pharmacological basis for the
practice of using crocodile excrement for treating eye
ailments.
4. Hysteria: In ancient Egypt the inhalation of the fumes
of charred crocodile faeces was a treatment for female
hysteria (Laporte 2000).
Literature
Laporte D. (2000). The History of Shit. MIT Press:
London. Translation from Histoire de la Merde, 1978,
by N. Benabid and Rodolphe el-Khoury.
Margolis, J. (2004). O: The Intimate History of the
Orgasm. Ed. Emecé: Argentina. 293 pp.
Nunn, J. (1996). Ancient Egyptian Medicine. University
of Oklahoma Press: Norman.
Price, M. (2001). Cosmetics, styles & beauty concepts
in Iran. http//:www.iranchamber.com/culture/articles/
cosmetics_beauty.php.
Figure 1. Two wild Mugger crocodiles attempting to mate
on land. Photograph: Vladimir Dinets (Coral Gables,
FL, USA).
Thompson, J.C. (2005). Women in the ancient world:
the status, role and daily life of women in the ancient
civilizations of Egypt, Rome, Athens, Israel and
Babylonia. http//: www.womenintheancientworld.
com/medicine%20in%20ancient%20egypt.htm.
Woodhead, L. (2006). The fine lines of beauty. The
Spectator, 3 June 2006. http://www.findarticles.com/
p/articles/mi_qa3724/is_200606/ai_n16523468.
Ana Maria Trelancia, <alcatrel@infonegocio.net.pe>.
Terrestrial Mating?
In January 2007, Vladimir Dinets spent one week
observing Mugger crocodiles (Crocodylus palustris) in
Sasan Gir National Park, Gujarat, India. He was able to
position himself quite close to the pool (which was about
1 m deep in places) without disturbing the crocodiles, and
took a photograph of two C. palustris attempting to mate
on land (Fig. 1) .
Figure 2. Two captive Siamese crocodiles attempting to
mate on land. Photograph: Charlie Manolis.
EDITORIAL POLICY: All news on crocodilian conservation,
research, management, captive propagation, trade, laws
and regulations is welcome. Photographs and other graphic
materials are particularly welcome. Information is usually
published, as submitted, over the authorʼs name and mailing
address. The editors also extract material from correspondence
or other sources and these items are attributed to the source. If
inaccuracies do appear, please call them to the attention of the
editors so that corrections can be published in later issues. The
opinions expressed herein are those of the individuals identified
and are not the opinions of CSG, the SSC or the IUCN-World
Conservation Union unless so indicated.
This reminded me of an observation I had made in
February 2005, of two captive Siamese crocodiles (C.
siamensis) at a farm in Siem Reap, Cambodia, which
were also attempting to mate on land (Fig. 2). The farmer
had observed such attempts on other occasions.
Charlie Manolis, CSG Regional Chairman for Australia
and Oceania, <cmanolis@wmi.com.au>.
23
Steering Committee of the Crocodile Specialist Group
Chairman: Professor Grahame Webb, P.O. Box 530, Sanderson, NT 0813, Australia
For further information on the CSG and its programs, on crocodile conservation, biology, management, farming, ranching, or
trade, contact the Executive Office (csg@wmi.com.au) or Regional Chairmen
Deputy Chairmen: Dr. Dietrich Jelden, Bundesamt für Naturschutz,
Konstantin Str. 110, D-53179 Bonn, Federal Republic of Germany,
Tel: (49) 228 849 1453, <JeldenD@bfn.de>. Alejandro Larriera,
Pje. Pvdo. 4455, Centeno 950, Santa Fe, Argentina, Tel: (543) 42
4531539, Fax: (543) 42 558955, <yacare@arnet.com.ar>.
France, <s.martin@lafermeauxcrocodiles.com>. Regional Vice
Chairman: Ralf Sommerlad, Roedelheimer Landstr. 42, Frankfurt
Hessen, Germany 60487, <crocodilians@web.de>.
Regional Chairmen, North America: Dr. Ruth Elsey, Louisiana
Wildlife and Fisheries Department, 5476 Grand Chenier Way,
Grand Chenier, LA 70643, USA, Tel: (1) 337 5382165, Fax: (1)
337 4912595, <relsey@wlf.louisiana.gov>; Allan Woodward,
Florida Fish and Wildlife Conservation Commission, 4005 S.
Main Street, Gainesville, FL 32601, USA, Tel: (1) 352 9552230,
Fax: (1) 352 3765359, <allan.woodward@myfwc.com>. Regional
Vice Chairmen: Noel Kinler <kinler_n@>wlf.state.la.us>; Harry
Dutton <harry.dutton@myfwc.com>.
Executive Officer: Tom Dacey, P.O. Box 98, Clifton Beach, QLD
4871, Australia, Tel/Fax: (61) 7 40553060, Cell: (61) 419704073,
<csg@wmi.com.au>.
Treasurer and Vice Chairman for IUCN: Dr. Perran Ross,
Department of Wildlife Ecology and Conservation, P.O. Box
110430, University of Florida, Gainesville, FL 32611, USA, Tel:
(1) 352 392 7137, <pross@ufl.edu>.
Vice Chairman for CITES: Hank Jenkins, P.O. Box 390,
Belconnen, ACT 2616, Australia, Tel: (61) 2 62583428, Fax:
(61) 2 62598757, <hank.jenkins@consol.net.au>; Deputy Vice
Chairman: Dr. Yoshio Kaneko <gtrust@wa2.so-net.ne.jp>.
Regional Chairman, Africa: Dr. Richard Fergusson, 8 Maiden
Dr., Highlands, Harare, Zimbabwe, Tel/Fax: (263) 47 76203,
Cell: (263) 91 285103, <zeahtco@zol.co.zw>. Regional Vice
Chairmen: Madagascar, Olivier Behra <OlivierBehra@MATE.
mg>; West Africa, Ekkehard Waitkuwait <Wwaitkuwait@aol.
com>.
Vice Chairman, Industry: Don Ashley, Belfast Dr., Tallahassee,
FL 32317, USA, Tel: (1) 850 893 6869, <Jdalligator@aol.
com>.
Deputy
Vice
Chairmen:
Yoichi
Takehara
<official@horimicals.com>; C.H. Koh <henglong@starhub.net.
sg>; Kevin Van Jaarsveldt <kvj@mweb.co.za>; Enrico Chiesa
<enricochiesa@italhide.it>; Jorge Saieh <jsaieh99@yahoo.
com>; Thomas Kralle <Thomas@Kralle.com>; Chris Plott
<cjp@amtan.com>; Eric Silberstein <caifor@ciudad.com.ar>;
Jerome Caraguel, <caraguel@roggwiller.com>.
Regional Chairmen, East and Southeast Asia: Dr. Jenny
Daltry, FFI Cambodia Programme, P.O. Box 1380, Phnom
Penh, Cambodia BKK 1, Tel: (855) 23 294934, Fax: (855) 23
211142, <jenny.daltry@gmail.com>; Jiang Hongxing, State
Forestry Administration of China, <hxjiang@forestry.ac.cn>.
Regional Vice Chairmen: Dr. Choo Hoo Giam <giamc@singnet.
com.sg>; Dr. Nao Thuok <naothuok@mobitel.com.kh>; Uthen
Youngprapakorn <thutcroc@ksc.th.com>; Yosapong Temsiripong
<yosapong@srirachamoda.com>;
Toshinori
Tsubouchi
<ttubouti@fd5.so-net.ne.jp>; Hellen Kurniati <hkurniati@yahoo.
com>; Julie Thomson <jthom28@yahoo.com>.
Vice Chairman, Trade Monitoring: John Caldwell <john.
caldwell@unep-wcmc.org>. Deputy Vice Chairman: James
MacGregor <james.macgregor@iied.org>; Steve Broad,
TRAFFIC International <steven.broad@traffic.org>.
Vice Chairman, Veterinary Science: Dr. Fritz Huchzermeyer, P.O.
Box 12499, Onderstepoort 0110, South Africa, Tel/Fax: (27) 12
808 3462, <crocvet@mweb.co.za>.
Regional Chairman, Australia and Oceania: Charlie Manolis, P.O.
Box 530, Sanderson, NT 0813, Australia, Tel: (61) 8 89224500,
Fax: (61) 8 89470678, <cmanolis@wmi.com.au>. Regional Vice
Chairmen: David Wilken <crocfarm@mainland.com.pg>; Steve
Peucker <steve.peucker@dpi.qld.gov.au>.
Vice Chairman, Zoos and Community Education: Dr. Kent Vliet,
University of Florida, Gainesville, FL 32611, USA, Tel: (1) 352
3928130, Fax: (1) 352 3924738, <kent.vliet@zoo.ufl.edu>.
Regional Chairman, West Asia: B.C. Choudhury, P.O. Box 18
Chandrabani, Dehra Dun, Uttaranchal, India, <bcc@wii.gov.
in>. Regional Vice Chairmen: Harry Andrews <mcbtindia@vsnl.
net>; Jayantha Jayawardane <romalijj@eureka.lk>; Abdul
Aleem Choudhury <mhaleemi@isb.iucnp.org>; Ashgar
Mobaraki <amobaraki@hotmail.com>; Dr. S.M.A. Rashid
<carinam95@yahoo.com> .
Vice Chairman, General Research: Dr. Valentine Lance. Graduate
School of Public Health, San Diego University, San Diego, CA,
USA, <lvalenti@sunstroke.sdsu.edu>.
Vice Chairman, Legal Affairs: Tomme Young <tomme.
young@gmail.com>.
Regional Chairman, Latin America and the Caribbean: Alvaro
Velasco, Apartado Postal 66597, Caracas, Venezuela, Tel: (58)
414 254 6054, <velascoalvaro@tutopia.com>. Regional Vice
Chairmen: Central America, Manuel Muñiz <moreletii@prodigy.
net.mx>; Caribbean, Roberto Soberón <soberon@ffauna.sih.cu>;
southern South America, Luciano Verdade <lmv@esalq.usp.br>;
Regional Trade, Bernado Ortiz <bernardo.ortiz@traffic.sur.iucn.
org>.
Honorary Steering Committee Members: Prof. Harry Messel
(Australia), Ted Joanen (USA), Romulus Whitaker (India), Phil
Wilkinson (USA), Prof. F. Wayne King (USA).
Regional Chairmen, Europe: Dr. Jon Hutton, UNEP World
Conservation Monitoring Centre, United Nations Environment
Program, 219 Huntingdon Road, Cambridge CB3 0DL, UK, Tel:
(44) 1223 277314, Fax: (44) 1223 277136, <Jon.Hutton@unepwcmc.org>; Samuel Martin, La Ferme aux Crocodiles, Pierrelatte,
Task Force/Working Group Chairmen: Chinese Alligator,
Jiang Hongxing <hxjiang@forestry.ac.cn>; Tomistoma, Ralf
Sommerlad <crocodilians@web.de>; Philippine Crocodile,
Chris Banks; Human-Crocodile Conflict, Dr. Richard Fergusson
<zeahtco@zol.co.zw>.
CSG Red List Authority: Dr. John Thorbjarnarson, Wildlife
Conservation Society, P.O. Box 357625, Gainesville, FL 326357625, USA, Tel: (1) 352 2647775, <jthorbjarnarson@wcs.org>.
24