ABSTRACT..- Gomes P.R., Koller W.W., Gomes A., Carvalho C.J.B. & Zorzatto J.R. 2002. [ Fanniiddip... more ABSTRACT..- Gomes P.R., Koller W.W., Gomes A., Carvalho C.J.B. & Zorzatto J.R. 2002. [ Fanniiddiptera vectors of Dermatobia hominis eggs in Campo Grande, MS, Brazil. eggs in Campo Grande, MS, Brazil.] Dipteros fanideosvetores de ovos de Dermatobia hominis em Campo Grande, Mato Grosso do Sul. PesquisaVeterinaria Brasileira 22 (3) : 114-118 . Laboratorio de Ectoparasitologia, Embrapa Gado de Corte,BR 262 Km 4, Cx. Postal 154, Campo Grande, MS 79002-970, Brazil.This study was undertaken to determine the epidemiological importance of fanniid flieson warble fly infestations. The local species of Fanniidae as well as those utilized by Dermatobiahominis to carry its eggs were identified, and the population dynamics of the most abundantspecies were studied. In order to accomplish this task, five traps with rotten bovine liver asbait were used. These traps were settled into a ciliate forest bordered by pastures and grazedcontinuously by cattle. The experiment was carried out at Embrapa Gado ...
Revista Brasileira de Parasitologia Veterinária, 2012
Synanthropic flies outstanding beside other flies due their relative abundance close to domestic ... more Synanthropic flies outstanding beside other flies due their relative abundance close to domestic animals and human population, to which they are able to cause myiasis or transmit pathogenic agents. As they're necrophagous they act as corpse decomposers and are useful in the forensic entomology in the post mortem interval determination. This study aimed to know flies diversity and abundance in Campo Grande, State of Mato Grosso do Sul. Captures were made weekly, utilizing three traps baited with decaying fish meat, from June of 2008 to May of 2009 in a remainder ciliary forest of the Embrapa's Cattle Beef Experimental Farm. The dipterans families that were considered and respectively number of collected specimens were: Calliphoridae (105,334); Muscidae (27,999); Sarcophagidae (21,083); Fanniidae (17,759) and Mesembrinellidae (305), totalizing 172,480 dipterous. To the local known species some Muscidae were increased as follows: Neomuscina atincticosta, Pseudoptilolepis elbida...
Abundance and seasonality of Cochliomyia macellaria (Diptera: Calliphoridae) in Southern Pantanal... more Abundance and seasonality of Cochliomyia macellaria (Diptera: Calliphoridae) in Southern Pantanal, Brazil Revista Brasileira de Parasitologia Veterinária, vol. 20, núm. 1, enero-marzo, 2011, pp. 27 -30 Colégio Brasileiro de Parasitologia Veterinária Jaboticabal, Brasil Rev. Bras. Parasitol. Vet., Jaboticabal, v. 20, n. 1, p. 27-30, jan.-mar. 2011 Abundance and seasonality of Cochliomyia macellaria (Diptera: Calliphoridae) in Southern Pantanal, Brazil Abstract Cochliomyia macellaria (Diptera: Calliphoridae), known as the secondary screwworm, occurs in the Americas and has medical-veterinary and forensic importance. This study aimed to describe the seasonal fluctuation of this species in the Pantanal region, Central-Western Brazil. From December 2004 to November 2007 fly catches using four windoriented traps baited with decaying bovine liver were carried out at the Nhumirim ranch, Nhecolândia subregion, Southern Pantanal. Traps remained active throughout the study period and collectio...
Trypanosoma vivax infection dynamics in a cattle herd maintained in a transition area between Pan... more Trypanosoma vivax infection dynamics in a cattle herd maintained in a transition area between Pantanal lowlands
The diptera maggots are used in forensic entomology to estimate the post-mortem interval (PMI). M... more The diptera maggots are used in forensic entomology to estimate the post-mortem interval (PMI). Maggots have a wide range of morphological and structural features that aid in the identification. In order to assist in the necrophagous larvae identification, this research aims to develop a software using computer vision and machine learning to automate the classification process. Diptera maggots were collected in a dead pig at the capital of Mato Grosso do Sul state, Campo Grande. The maggots were identified and photographed at a light microscope (5x objective). Next, the images were processed, the features extraction was performed using an extractor in Python language. The classification of the images were tested with AdaBoost, Random Forest, Random Tree and SMO classifiers. The SMO the best performa.
A "ciganinha", cientificamente conhecida como Memora peregrina (Miers) Sandwith (Bignon... more A "ciganinha", cientificamente conhecida como Memora peregrina (Miers) Sandwith (Bignoniaceae), presente em diversas areas de cerrado do Brasil Central, vem sendo um serio problema como invasora de pastagens cultivadas, em especial, quando estas ja se encontram em adiantado estado de degradacao. Nunes (1999) descreve-a como um arbusto, com ramos semilenhosos, entouceirado, ereto, que atinge a altura entre 100 e 150 centimetros. Apresenta inflorescencias vistosas com flores amarelas semelhantes as do ipe-amarelo, o que contribuia para que, ate recentemente, fosse catalogada apenas como planta ornamental (LORENZI; SOUZA, 1995). O principal periodo de florada ocorre na primavera e no verao, embora a presenca de flores pode ser observada, praticamente, em qualquer epoca do ano. Sua reproducao se da por sementes aladas, contidas em camadas sobrepostas no interior de uma capsula com aspecto de uma longa vagem e, tambem, por processo vegetativo. Esse ultimo ocorre pela ativacao d...
This is first report of occurence of Ixodes in the State of Mato Grosso do Sul and first descript... more This is first report of occurence of Ixodes in the State of Mato Grosso do Sul and first description of Ixodes loricatus Neumann, 1899, parasitizing Didelphis albiventris in Campo Grande, MS, Brazil.
Records of the occurrence of resistant populations of cattle parasites are becoming increasingly ... more Records of the occurrence of resistant populations of cattle parasites are becoming increasingly frequent in different regions of the country. These reports refer in general to the horn fly, Haematobia irritans.
Tabanid (Diptera) species are associated with the mechanical transmission of several pathogens to... more Tabanid (Diptera) species are associated with the mechanical transmission of several pathogens to both domestic and wild animals around the world. The aim of this study was to evaluate the diversity, abundance, and seasonal dynamic of tabanids in the Cerrado-Pantanal ecotone in Miranda, state of Mato Grosso do Sul, Brazil. Tabanids were collected once a month, from June 2001 to May 2003, for seven consecutive days per collection, using canopy and nzi type traps baited with a chemical attractant (1-octen-3-ol). A total of 6,492 individuals from 39 species and 18 genera was collected, which increases from 25 to 34 the number of tabanid species reported for the studied region. Tabanus occidentalis Linnaeus, 1758 (62.21%) was the most abundant species throughout the collection period, followed by Lepiselaga crassipes (Fabricius, 1805) (7.19%) and Tabanus sorbillans Wiedemann, 1828 (5.68%). The peak of the tabanid population was reached during the rainy season, which is the period of the...
The objective of this study was to evaluate the life cycle and parasitic competence of Dermacento... more The objective of this study was to evaluate the life cycle and parasitic competence of Dermacentor nitens (Neumann, 1897) on different animal species. Experimental infestations were induced in five specimens each of seven species of possible hosts: rabbits, horses, sheep, cows, guinea pigs, birds and dogs. Rabbits were infested in the ear using artificial feeding chambers, and the horses, sheep, cows and dogs were infested in the ear without feeding chambers. For the infestation of guinea pigs, artificial feeding chambers were fixed on the back. Birds were infested by placing larvae on the back and under the wings without the use of chambers. All animals were inspected daily until the end of the parasitic phase (when the engorged females detached). The average period of engorgement was 25.1days on a horse, with larvae requiring 8days and nymphs 9days to reach engorgement; the average weight of engorged females was 271.4mg; the average weight of egg batches produced was 159.3mg, and ...
Collections carried out for a period of 10 weeks from October to December 2013 in two fragments o... more Collections carried out for a period of 10 weeks from October to December 2013 in two fragments of Cerrado (experimental farm of Embrapa Gado de Corte and Private Reserve of Natural Heritage belong to the Universidade Federal de Mato Grosso do Sul (RPPN-UFMS)) located in the municipality of Campo Grande, state of Mato Grosso do Sul, Midwestern Brazil, with traps baited with decomposing beef liver, and collections conducted for a period of 15 days in January 2014 in the RPPN-UFMS, using Shannon traps baited with dog corpses, resulted in 32 flesh fly species of eight genera, with the first record of the genus Blaesoxipha and 15 new species records to Mato Grosso do Sul.
Revista brasileira de parasitologia veterinária = Brazilian journal of veterinary parasitology : Órgão Oficial do Colégio Brasileiro de Parasitologia Veterinária, Jan 7, 2016
The Rhipicephalus (Boophilus) microplus tick is responsible for considerable economic losses in B... more The Rhipicephalus (Boophilus) microplus tick is responsible for considerable economic losses in Brazil, causing leather damage, weight loss and reduced milk production in cattle and results in the transmission of pathogens. Currently, the main method for controlling this tick is using acaricides, but their indiscriminate use is one of the major causes of resistance dissemination. In this study, the adult immersion test (AIT) was used to evaluate resistance in ticks from 28 properties located in five different states (Mato Grosso do Sul, Mato Grosso, Ceará, São Paulo, e Minas Gerais) and the Distrito Federal (DF) of Brazil. The resistance was found in 47.64% of the repetitions demonstrating an efficacy of less than 90% in various locations throughout the country. The larvae packet test was used to evaluate samples from ten properties in four states (Mato Grosso do Sul, Mato Grosso, Minas Gerais and Espírito Santo). Spray products belonging to the main classes of acaricides, including...
Coprophagous Scarabaeidae and Aphodiidae in implanted pastures from sul-mato-grossense savanna ar... more Coprophagous Scarabaeidae and Aphodiidae in implanted pastures from sul-mato-grossense savanna area. A study was carried out in order to improve the knowledge about coprophagous Scarabaeidae and Aphodiidae in implanted pastures , including diversity and some fauna indexes like frequency, constancy and abundance. The methodology used was captures through five pitfall traps baited with cattle fresh dungs from where the catched insects were weekly removed from January 1995 to December 1997. Fifty five species were collected, comprising twenty four genera and 56,255 specimens. In decreasing order, species with higher fauna indexes were: Ontherus sulcator (F., 1775), Digitonthophagus gazella (F., 1771), Ataenius sp.1, Dichotomius nisus (Olivier, 1789), Ataenius sculptor Harold, 1868, Ontherus appendiculatus (Mann., 1829), Trichillum externepunctatum Borre, 1880 and Dichotomius bos (Blanchard, 1843). The results permit concludes that besides D. gazella, O. sulcator, which is also abundant...
ABSTRACT..- Gomes P.R., Koller W.W., Gomes A., Carvalho C.J.B. & Zorzatto J.R. 2002. [ Fanniiddip... more ABSTRACT..- Gomes P.R., Koller W.W., Gomes A., Carvalho C.J.B. & Zorzatto J.R. 2002. [ Fanniiddiptera vectors of Dermatobia hominis eggs in Campo Grande, MS, Brazil. eggs in Campo Grande, MS, Brazil.] Dipteros fanideosvetores de ovos de Dermatobia hominis em Campo Grande, Mato Grosso do Sul. PesquisaVeterinaria Brasileira 22 (3) : 114-118 . Laboratorio de Ectoparasitologia, Embrapa Gado de Corte,BR 262 Km 4, Cx. Postal 154, Campo Grande, MS 79002-970, Brazil.This study was undertaken to determine the epidemiological importance of fanniid flieson warble fly infestations. The local species of Fanniidae as well as those utilized by Dermatobiahominis to carry its eggs were identified, and the population dynamics of the most abundantspecies were studied. In order to accomplish this task, five traps with rotten bovine liver asbait were used. These traps were settled into a ciliate forest bordered by pastures and grazedcontinuously by cattle. The experiment was carried out at Embrapa Gado ...
Revista Brasileira de Parasitologia Veterinária, 2012
Synanthropic flies outstanding beside other flies due their relative abundance close to domestic ... more Synanthropic flies outstanding beside other flies due their relative abundance close to domestic animals and human population, to which they are able to cause myiasis or transmit pathogenic agents. As they're necrophagous they act as corpse decomposers and are useful in the forensic entomology in the post mortem interval determination. This study aimed to know flies diversity and abundance in Campo Grande, State of Mato Grosso do Sul. Captures were made weekly, utilizing three traps baited with decaying fish meat, from June of 2008 to May of 2009 in a remainder ciliary forest of the Embrapa's Cattle Beef Experimental Farm. The dipterans families that were considered and respectively number of collected specimens were: Calliphoridae (105,334); Muscidae (27,999); Sarcophagidae (21,083); Fanniidae (17,759) and Mesembrinellidae (305), totalizing 172,480 dipterous. To the local known species some Muscidae were increased as follows: Neomuscina atincticosta, Pseudoptilolepis elbida...
Abundance and seasonality of Cochliomyia macellaria (Diptera: Calliphoridae) in Southern Pantanal... more Abundance and seasonality of Cochliomyia macellaria (Diptera: Calliphoridae) in Southern Pantanal, Brazil Revista Brasileira de Parasitologia Veterinária, vol. 20, núm. 1, enero-marzo, 2011, pp. 27 -30 Colégio Brasileiro de Parasitologia Veterinária Jaboticabal, Brasil Rev. Bras. Parasitol. Vet., Jaboticabal, v. 20, n. 1, p. 27-30, jan.-mar. 2011 Abundance and seasonality of Cochliomyia macellaria (Diptera: Calliphoridae) in Southern Pantanal, Brazil Abstract Cochliomyia macellaria (Diptera: Calliphoridae), known as the secondary screwworm, occurs in the Americas and has medical-veterinary and forensic importance. This study aimed to describe the seasonal fluctuation of this species in the Pantanal region, Central-Western Brazil. From December 2004 to November 2007 fly catches using four windoriented traps baited with decaying bovine liver were carried out at the Nhumirim ranch, Nhecolândia subregion, Southern Pantanal. Traps remained active throughout the study period and collectio...
Trypanosoma vivax infection dynamics in a cattle herd maintained in a transition area between Pan... more Trypanosoma vivax infection dynamics in a cattle herd maintained in a transition area between Pantanal lowlands
The diptera maggots are used in forensic entomology to estimate the post-mortem interval (PMI). M... more The diptera maggots are used in forensic entomology to estimate the post-mortem interval (PMI). Maggots have a wide range of morphological and structural features that aid in the identification. In order to assist in the necrophagous larvae identification, this research aims to develop a software using computer vision and machine learning to automate the classification process. Diptera maggots were collected in a dead pig at the capital of Mato Grosso do Sul state, Campo Grande. The maggots were identified and photographed at a light microscope (5x objective). Next, the images were processed, the features extraction was performed using an extractor in Python language. The classification of the images were tested with AdaBoost, Random Forest, Random Tree and SMO classifiers. The SMO the best performa.
A "ciganinha", cientificamente conhecida como Memora peregrina (Miers) Sandwith (Bignon... more A "ciganinha", cientificamente conhecida como Memora peregrina (Miers) Sandwith (Bignoniaceae), presente em diversas areas de cerrado do Brasil Central, vem sendo um serio problema como invasora de pastagens cultivadas, em especial, quando estas ja se encontram em adiantado estado de degradacao. Nunes (1999) descreve-a como um arbusto, com ramos semilenhosos, entouceirado, ereto, que atinge a altura entre 100 e 150 centimetros. Apresenta inflorescencias vistosas com flores amarelas semelhantes as do ipe-amarelo, o que contribuia para que, ate recentemente, fosse catalogada apenas como planta ornamental (LORENZI; SOUZA, 1995). O principal periodo de florada ocorre na primavera e no verao, embora a presenca de flores pode ser observada, praticamente, em qualquer epoca do ano. Sua reproducao se da por sementes aladas, contidas em camadas sobrepostas no interior de uma capsula com aspecto de uma longa vagem e, tambem, por processo vegetativo. Esse ultimo ocorre pela ativacao d...
This is first report of occurence of Ixodes in the State of Mato Grosso do Sul and first descript... more This is first report of occurence of Ixodes in the State of Mato Grosso do Sul and first description of Ixodes loricatus Neumann, 1899, parasitizing Didelphis albiventris in Campo Grande, MS, Brazil.
Records of the occurrence of resistant populations of cattle parasites are becoming increasingly ... more Records of the occurrence of resistant populations of cattle parasites are becoming increasingly frequent in different regions of the country. These reports refer in general to the horn fly, Haematobia irritans.
Tabanid (Diptera) species are associated with the mechanical transmission of several pathogens to... more Tabanid (Diptera) species are associated with the mechanical transmission of several pathogens to both domestic and wild animals around the world. The aim of this study was to evaluate the diversity, abundance, and seasonal dynamic of tabanids in the Cerrado-Pantanal ecotone in Miranda, state of Mato Grosso do Sul, Brazil. Tabanids were collected once a month, from June 2001 to May 2003, for seven consecutive days per collection, using canopy and nzi type traps baited with a chemical attractant (1-octen-3-ol). A total of 6,492 individuals from 39 species and 18 genera was collected, which increases from 25 to 34 the number of tabanid species reported for the studied region. Tabanus occidentalis Linnaeus, 1758 (62.21%) was the most abundant species throughout the collection period, followed by Lepiselaga crassipes (Fabricius, 1805) (7.19%) and Tabanus sorbillans Wiedemann, 1828 (5.68%). The peak of the tabanid population was reached during the rainy season, which is the period of the...
The objective of this study was to evaluate the life cycle and parasitic competence of Dermacento... more The objective of this study was to evaluate the life cycle and parasitic competence of Dermacentor nitens (Neumann, 1897) on different animal species. Experimental infestations were induced in five specimens each of seven species of possible hosts: rabbits, horses, sheep, cows, guinea pigs, birds and dogs. Rabbits were infested in the ear using artificial feeding chambers, and the horses, sheep, cows and dogs were infested in the ear without feeding chambers. For the infestation of guinea pigs, artificial feeding chambers were fixed on the back. Birds were infested by placing larvae on the back and under the wings without the use of chambers. All animals were inspected daily until the end of the parasitic phase (when the engorged females detached). The average period of engorgement was 25.1days on a horse, with larvae requiring 8days and nymphs 9days to reach engorgement; the average weight of engorged females was 271.4mg; the average weight of egg batches produced was 159.3mg, and ...
Collections carried out for a period of 10 weeks from October to December 2013 in two fragments o... more Collections carried out for a period of 10 weeks from October to December 2013 in two fragments of Cerrado (experimental farm of Embrapa Gado de Corte and Private Reserve of Natural Heritage belong to the Universidade Federal de Mato Grosso do Sul (RPPN-UFMS)) located in the municipality of Campo Grande, state of Mato Grosso do Sul, Midwestern Brazil, with traps baited with decomposing beef liver, and collections conducted for a period of 15 days in January 2014 in the RPPN-UFMS, using Shannon traps baited with dog corpses, resulted in 32 flesh fly species of eight genera, with the first record of the genus Blaesoxipha and 15 new species records to Mato Grosso do Sul.
Revista brasileira de parasitologia veterinária = Brazilian journal of veterinary parasitology : Órgão Oficial do Colégio Brasileiro de Parasitologia Veterinária, Jan 7, 2016
The Rhipicephalus (Boophilus) microplus tick is responsible for considerable economic losses in B... more The Rhipicephalus (Boophilus) microplus tick is responsible for considerable economic losses in Brazil, causing leather damage, weight loss and reduced milk production in cattle and results in the transmission of pathogens. Currently, the main method for controlling this tick is using acaricides, but their indiscriminate use is one of the major causes of resistance dissemination. In this study, the adult immersion test (AIT) was used to evaluate resistance in ticks from 28 properties located in five different states (Mato Grosso do Sul, Mato Grosso, Ceará, São Paulo, e Minas Gerais) and the Distrito Federal (DF) of Brazil. The resistance was found in 47.64% of the repetitions demonstrating an efficacy of less than 90% in various locations throughout the country. The larvae packet test was used to evaluate samples from ten properties in four states (Mato Grosso do Sul, Mato Grosso, Minas Gerais and Espírito Santo). Spray products belonging to the main classes of acaricides, including...
Coprophagous Scarabaeidae and Aphodiidae in implanted pastures from sul-mato-grossense savanna ar... more Coprophagous Scarabaeidae and Aphodiidae in implanted pastures from sul-mato-grossense savanna area. A study was carried out in order to improve the knowledge about coprophagous Scarabaeidae and Aphodiidae in implanted pastures , including diversity and some fauna indexes like frequency, constancy and abundance. The methodology used was captures through five pitfall traps baited with cattle fresh dungs from where the catched insects were weekly removed from January 1995 to December 1997. Fifty five species were collected, comprising twenty four genera and 56,255 specimens. In decreasing order, species with higher fauna indexes were: Ontherus sulcator (F., 1775), Digitonthophagus gazella (F., 1771), Ataenius sp.1, Dichotomius nisus (Olivier, 1789), Ataenius sculptor Harold, 1868, Ontherus appendiculatus (Mann., 1829), Trichillum externepunctatum Borre, 1880 and Dichotomius bos (Blanchard, 1843). The results permit concludes that besides D. gazella, O. sulcator, which is also abundant...
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Papers by Wilson Werner Koller