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    Deniz Ergüden

    Two specimens of Epigonus denticulatus Dieuzeide, 1950, belonging to the family Epigonidae, were captured during bottom trawling at depths between 446 and 522 m off Mersin coast of Turkey on 17 May 2014. The presence of E. denticulatus in... more
    Two specimens of Epigonus denticulatus Dieuzeide, 1950, belonging to the family Epigonidae, were captured during bottom trawling at depths between 446 and 522 m off Mersin coast of Turkey on 17 May 2014. The presence of E. denticulatus in the Aegean Sea was recorded in 1987. This report is the first capture report from Turkish marine waters and first confirmation record of the fish in the North-Eastern Mediterranean.
    One female specimen of the Smoothback Angelshark Squatina oculata was captured by a commercial trawler at a depth of 65 m on 4 November 2017 from Aydıncık coast (North-eastern Mediterranean Sea, Turkey). Squatina oculata had not been... more
    One female specimen of the Smoothback Angelshark Squatina oculata was captured by a commercial trawler at a depth of 65 m on 4 November 2017 from Aydıncık coast (North-eastern Mediterranean Sea, Turkey). Squatina oculata had not been reported in this part of the North-eastern Mediterranean Sea nearly for the last two decades. The captured specimen was 726 mm in total length and 3450 g in weight. Morphometric and meristic characters of the captured specimen are compared with the other Mediterranean records. Due to increasing fishing activities and habitat degradation throughout the Mediterranean Sea during the last decades, angelshark species are dramatically declined day by day. Thus, conservation status of the Smoothback Angelshark S. oculata in the Mediterranean Sea is classified as "Critically Endangered" at Global Red List by IUCN.
    Buyukeceli kiyilarinda (Kuzey-Dogu Akdeniz) 400 m derinlikte bir trol teknesi ile disi bir Centrolophus niger (Gmelin, 1789) bireyi avlanmistir. Bu bireyin boyu 51,9 cm bulunmustur. Bu calisma Turkiye’nin Akdeniz ve Ege sahilleri boyunca... more
    Buyukeceli kiyilarinda (Kuzey-Dogu Akdeniz) 400 m derinlikte bir trol teknesi ile disi bir Centrolophus niger (Gmelin, 1789) bireyi avlanmistir. Bu bireyin boyu 51,9 cm bulunmustur. Bu calisma Turkiye’nin Akdeniz ve Ege sahilleri boyunca besinci lokalite kaydi verilmis ve ayni zamanda Turkiye’nin Buyukeceli Akdeniz kiyisindan bu turun ilk kez varligi rapor edilmistir.
    There is a tendency to exploit marine resources for food, energy and other requirements that puts pressure on the fragile marine environment and necessitates sustainable conservation efforts. In Marine species identification, DNA... more
    There is a tendency to exploit marine resources for food, energy and other requirements that puts pressure on the fragile marine environment and necessitates sustainable conservation efforts. In Marine species identification, DNA barcoding can be useful in the assessment of cryptic or morphologically similar species which is widespread in marine environment. Grouper species belonging to Ephinephelus, Hyporthodus and Mycteroperca genera and Serranidae family are the most exploited and valuable fish species in Turkish marine waters distributed in the Mediterranean and Aegean Seas and are represented with 6 species (Epinephelus aeneus, Epinephelus marginatus, Epinephelus caninus, Epinephelus costae, Hyporthodus haifensis and Mycteroperca rubra. Some of these species are morphologically very similar and difficult to be distinguished from each other. Here we examine the utility of DNA barcoding of mitochondrial COI, Cytochrome b and D-loop regions, and also documenting pattern of genetic...
    There is a tendency to exploit marine resources for food, energy and other requirements that puts pressure on the fragile marine environment and necessitates sustainable conservation efforts. In Marine species identification, DNA... more
    There is a tendency to exploit marine resources for food, energy and other requirements that puts pressure on the fragile marine environment and necessitates sustainable conservation efforts. In Marine species identification, DNA barcoding can be useful in the assessment of cryptic or morphologically similar species which is widespread in marine environment. Grouper species belonging to Ephinephelus, Hyporthodus and Mycteroperca genera and Serranidae family are the most exploited and valuable fish species in Turkish marine waters distributed in the Mediterranean and Aegean Seas and are represented with 6 species (Epinephelus aeneus, Epinephelus marginatus, Epinephelus caninus, Epinephelus costae, Hyporthodus haifensis and Mycteroperca rubra. Some of these species are morphologically very similar and difficult to be distinguished from each other. Here we examine the utility of DNA barcoding of mitochondrial COI, Cytochrome b and D-loop regions, and also documenting pattern of genetic...
    In June 2018, a single female specimen of the Ocean sunfish, Mola mola (Linnaeus, 1758) (122 cm in total length and 80 kg in weight) was caught by a commercial trammel net at a depth of 393 m in Mersin Bay (Bozyazi coast), Turkey. This... more
    In June 2018, a single female specimen of the Ocean sunfish, Mola mola (Linnaeus, 1758) (122 cm in total length and 80 kg in weight) was caught by a commercial trammel net at a depth of 393 m in Mersin Bay (Bozyazi coast), Turkey. This paper presents the first substantiated occurrence and hence, the confirmation of M. mola in the Northeastern Mediterranean, Turkey. Morphological and meristic measurements of the specimen were made and recorded with the catalog number MEUFC-18-11-101 in the Museum of the Systematic in, Mersin University’s Faculty of Fisheries. Morphometric and mer-istic data matched other recordings of this species from parts of the Mediterranean, and the histor-ical captured record of the species in the Mediterranean was documented.
    Summary This study investigates length–weight and length–length relationships of four shad species (Alosa caspia caspia, Alosa immaculata, Alosa maeotica, Alosa tanaica) captured in the western Black Sea coast of Turkey. A total of 686... more
    Summary This study investigates length–weight and length–length relationships of four shad species (Alosa caspia caspia, Alosa immaculata, Alosa maeotica, Alosa tanaica) captured in the western Black Sea coast of Turkey. A total of 686 specimens, 355 females and 331 males, were caught by gill net, trammel net and longline from 2006 through 2007 along the western Black Sea coast of Turkey. The relationships of total length (TL), fork length (FL) and standard length (SL) are presented for inhabiting in the Black Sea four shad species and the relationships between total length (TL) and body weight (BW) from the two localities, Sile and Karasu in the western Black Sea coast of Turkey. The Length–weight relationships generally indicated positive allometric growth in Alosa species for both males and females and an isometric growth for A. immaculata females. The coefficient b ranged from a minimum 2.97 for females of A. immaculata to a maximum 3.75 for both sexes A. c. caspia. Results indi...
    Non-native African hind, Cephalopholis taeniops (Valenciennes, 1828), was for the first time recorded in the Levantine coast of Turkey (eastern Mediterranean). One specimen belong to C. taeniops was collected at the depths between 15 and... more
    Non-native African hind, Cephalopholis taeniops (Valenciennes, 1828), was for the first time recorded in the Levantine coast of Turkey (eastern Mediterranean). One specimen belong to C. taeniops was collected at the depths between 15 and 25 m in Iskenderun Bay. This paper is based on the literature review and the first record of C. taeniops from the Levantine coast of Turkey and suplemantary distribution in the Mediterranean Sea.
    During a Scuba survey in Iskenderun Bay at night time on November 2018, a female Urocaridella pulchella individual was observed with nocturnal cleaning on Octopus vulgaris at 16 m in depth. Some photos of the shrimp and its symbiont were... more
    During a Scuba survey in Iskenderun Bay at night time on November 2018, a female Urocaridella pulchella individual was observed with nocturnal cleaning on Octopus vulgaris at 16 m in depth. Some photos of the shrimp and its symbiont were taken. Although the nocturnal cleaning relationship between U. pulchella and various marine species has been reported in some studies, the nocturnal cleaning relationship between O. vulgaris and U. pulchella has been observed for the first time. In addition, in the present study, we first reported Indo-Pacific palaemonid shrimp U. pulchella which was encountered in its natural habitat during an underwater observation from Iskenderun Bay, and this report is the first observation for this area and fills a gap in the distribution range of this species.Keywords: eastern Mediterranean, Iskenderun coast, nocturnal cleaning, Palaemonidae, Turkey.
    A single male specimen of Nemichthys scolopaceus Richardson, 1848 was caught by a commercial deep trawler from Erdemli coast, Mersin Bay at a depth of about 595 m on 08 July 2019. After the capture, the fresh male specimen was identified,... more
    A single male specimen of Nemichthys scolopaceus Richardson, 1848 was caught by a commercial deep trawler from Erdemli coast, Mersin Bay at a depth of about 595 m on 08 July 2019. After the capture, the fresh male specimen was identified, photographed, and measured. Morphometric and meristic characters of the specimen are given in the text. This paper first confirms the occurrence of a male specimen for N. scolopaceus from the Eastern Mediterranean coast of Turkey.
    In this study a total of 165 (10.0-21.0 cm TL, 17.40-180.10 g TW) Redcoat, Sargocentron rubrum (Forsskal, 1775) were caught in Iskenderun Bay between September 2017 and April 2018 using a longline As a result, length-weight relationships... more
    In this study a total of 165 (10.0-21.0 cm TL, 17.40-180.10 g TW) Redcoat, Sargocentron rubrum (Forsskal, 1775) were caught in Iskenderun Bay between September 2017 and April 2018 using a longline As a result, length-weight relationships (LWRs), sex ratio and condition the estimates for b parameter of the LWR ranged between and 3.098 3.096 and 3.100 for males, females and both sexes, respectively. Positive allometric growth were observed for male, female and both sexes. Fulton’s condition (KF) factor values also revealed not significant variations (P>0.001) for females (1.904) and males (1.926) specimens of S. rubrum. No information currently exists on the length-weight relationship and condition of S. rubrum in the southeastern Mediterranean coast of Turkey. This paper is an important contribution to the science and fisheries management applications for this species.
    The long-spined sea urchin Diadema setosum (Leske 1778) is recorded for the first time from coast of Yayladagi, Antakya Bay, Eastern Mediterranean Sea, Turkey. Three specimens of D. setosum have been recorded along the coast of Antakya... more
    The long-spined sea urchin Diadema setosum (Leske 1778) is recorded for the first time from coast of Yayladagi, Antakya Bay, Eastern Mediterranean Sea, Turkey. Three specimens of D. setosum have been recorded along the coast of Antakya Bay on 25 July 2010. The occurrence of this species in the Mediterranean is the result of sea currents from the Red Sea via Suez Canal.
    One specimen of Brama brama (Bonnaterre 1788) was collected by trammel net at a depth of 55 m coast of Yesilovacik (Mersin Bay) on 1 June 2016 and other three specimens were captured by a bottom longline from Arsuz coast, Iskenderun Bay... more
    One specimen of Brama brama (Bonnaterre 1788) was collected by trammel net at a depth of 55 m coast of Yesilovacik (Mersin Bay) on 1 June 2016 and other three specimens were captured by a bottom longline from Arsuz coast, Iskenderun Bay at depth of about 35 m on 09-10 May 2019. Although B. brama has been distributed in the Mediterranean Sea and reported to exit in the Mediterranean coast of Turkey, its occurrence is rare. The present study is the first confirmed report of the species from Iskenderun Bay and Mersin Bay, eastern Mediterranean coast of Turkey. Besides, the present report is the first observation for these locations and fills another gap in the distribution range of this species. All measurements and counts as well as morphological and color descriptions of B. brama agree with previous descriptions.
    The objective of this current study is to investigate the proximate composition (protein, lipid, moisture, and ash) of tench (Tinca tinca, Linnaeus, 1758), Prussian carp (Carassius gibelio Bloch, 1783), and king nase fish (Chondrostroma... more
    The objective of this current study is to investigate the proximate composition (protein, lipid, moisture, and ash) of tench (Tinca tinca, Linnaeus, 1758), Prussian carp (Carassius gibelio Bloch, 1783), and king nase fish (Chondrostroma regium Heckel, 1843) which are considered economically important fish species in the region at the time when this study was carried out. Tench was extinct short after this current study was done.
    Abstract A first record of the lionfish Pterois miles (Bennett, 1828) is reported for the Turkish marine waters, observed in Iskenderun Bay, Northeastern Mediterranean on 13 April 2014. The lionfish is the first non-native marine fishes,... more
    Abstract A first record of the lionfish Pterois miles (Bennett, 1828) is reported for the Turkish marine waters, observed in Iskenderun Bay, Northeastern Mediterranean on 13 April 2014. The lionfish is the first non-native marine fishes, established in the family Scorpaenidae for the Turkish marine waters.
    Research Interests:
    ... and northeastern Mediterranean Seas Deniz Erguden Æ Bayram O¨ ztürk Æ Zeliha Aka Erdogan Æ Cemal Turan Received: 27 February 2008 / Accepted: 7 August 2008 / Published online: 20 December 2008 Ó The Japanese Society of Fisheries... more
    ... and northeastern Mediterranean Seas Deniz Erguden Æ Bayram O¨ ztürk Æ Zeliha Aka Erdogan Æ Cemal Turan Received: 27 February 2008 / Accepted: 7 August 2008 / Published online: 20 December 2008 Ó The Japanese Society of Fisheries Science 2008 ...
    This study was carried out in Iskenderun Bay of Northeastern Mediterranean between 2005-2013. Fish species are determined through examination of the fishes caught by trawl and purse-seiners. Besides diving observations and the data sets... more
    This study was carried out in Iskenderun Bay of Northeastern Mediterranean between 2005-2013. Fish species are determined through examination of the fishes caught by trawl and purse-seiners. Besides diving observations and the data sets of researchers undertaken projects on the fishes of the Bay of Iskenderun from various institutions i.e., BAP, TUBITAK, TAGEM were also used. The results were compared with the Red List published by the International Union for Conservation of Nature and Natural Resources (IUCN) in 2014, “the Red List” was re-evaluated and it was concluded that, out of 519 local bony fish species reported in Mediterranean Sea, 41 species belonging to 21 family in the Bay of Iskenderun were decided to be endangered or under the threat of extinction
    A specimen of the serpent eel, Ophisurus serpens, with a total length of 190.2 cm was caught off the coast of Mersin (Incekum), Turkey on November 2014 during trawling. This manuscript presents the first digitized specimen of O. serpens... more
    A specimen of the serpent eel, Ophisurus serpens, with a total length of 190.2 cm was caught off the coast of Mersin (Incekum), Turkey on November 2014 during trawling. This manuscript presents the first digitized specimen of O. serpens from the Mersin Bay (northeastern Mediterranean), and hence, confirms the presence of the species in the northeastern Mediterranean despite a suspicious previous report, possibly mistaken with Echelus myrus, of the species from Yumurtalık Bay. Remarks on the morphology and geographical distribution of the species in the Mediterranean Sea, Turkey are given.
    In this study, 5 specimens of antenna codlet Bregmaceros atlanticus Goode and Bean, 1886 were collected during purse seine fishing on 25 December 2010 at a depth 120 m from Iskenderun Bay. This is the first occurrence of B. atlanticus... more
    In this study, 5 specimens of antenna codlet Bregmaceros atlanticus Goode and Bean, 1886 were collected during purse seine fishing on 25 December 2010 at a depth 120 m from Iskenderun Bay. This is the first occurrence of B. atlanticus from Iskenderun Bay and third occurrence from Turkish waters that indicate possible establishment of the population of B. atlanticus in Turkish Marine waters.
    This paper presents the first report of Elysia grandifolia Kelaart, 1858 in the Iskenderun Bay (the northeast end of the Levantine Sea (EM), the southeastern coast of Turkey). It is also, the second record of E. grandifolia in the Turkish... more
    This paper presents the first report of Elysia grandifolia Kelaart, 1858 in the Iskenderun Bay (the northeast end of the Levantine Sea (EM), the southeastern coast of Turkey). It is also, the second record of E. grandifolia in the Turkish Levantine coast.
    In this study genetic and morphologic structure of the sea-bass, Dicentrarchus labrax, in Turkish coastal waters were studied. Total 120 individuals were sampled in equal numbers from the Black, Marmara, Aegean and North-eastern... more
    In this study genetic and morphologic structure of the sea-bass, Dicentrarchus labrax, in Turkish coastal waters were studied. Total 120 individuals were sampled in equal numbers from the Black, Marmara, Aegean and North-eastern Mediterranean Seas. In genetic analyses, four-enzyme systems (G3PDH*, ME*, MDH*, PGI*) were assayed, representing 9 loci (G3PDH-1*, G3PDH-2*, MDH-1*, MDH-2*, MDH-3*, ME*, PGI-1*, PGI-2*, PGI-3*), 2 of which were polymorphic (G3PDH-2*, PGI-3*). Fisher's exact test revealed that there were no genetic differences between populations using 9 loci. Nei's genetic distance was 0.0001 between the Black Sea and Mediterranean samples. Genetic identity was also found to be 0.9999 between the Black and Mediterranean Sea samples. In canonical discriminant function analysis, a high degree of morphologic differentiation was detected between populations. Proportions of correctly classified Aegean Sea (100%) and Black Sea (97%) samples to their original group were hi...
    Summary Randall’s threadfin bream, Nemipterus randalli, first recorded in Iskenderun Bay in Turkey in 2008, seems to have increased in the region. The species, widespread in the western Indian Ocean and with a rapid expansion, appears to... more
    Summary Randall’s threadfin bream, Nemipterus randalli, first recorded in Iskenderun Bay in Turkey in 2008, seems to have increased in the region. The species, widespread in the western Indian Ocean and with a rapid expansion, appears to have migrated to the bay via the Red Sea. Although its presence in the region has been published, there has been little or no information as to age and growth parameters of this Lessepsian migrant in its new habitat. The present study aims to determine the basic age and growth parameters of the species colonized in the region. A total of 379 collected individuals were studied from November 2007 to October 2008. Total specimen lengths ranged from 4.80 to 21.50 cm, and weights from 1.10 to 138.36 g. Maximum age was 3 years for both sexes. The length–weight relationship was described as W = 0.0011 × L3.061 (r2 = 0.982). The von Bertalanffy growth parameters were: L∞ = 34.96 cm; K = 0.214 year−1; t0 = −1.244 year for the entire population. These data we...
    Three specimens of the Red Sea goatfish Parupeneus forsskali were recorded from two locations at a depth of 12-18 m. One was observed during the SCUBA diving in Fethiye Bay on 15 June 2016 and the other two were collected via trawling... more
    Three specimens of the Red Sea goatfish Parupeneus forsskali were recorded from two locations at a depth of 12-18 m. One was observed during the SCUBA diving in Fethiye Bay on 15 June 2016 and the other two were collected via trawling during a bentic survey in Aydincik coast on 24 December 2016. P. forsskali was first recorded in the Mediterranean coast of Turkey twelve years ago. This lessepsian species appears to be continually spreading and easily establishing new populations in the Mediterranean Sea coast of Turkey. Our study indicated the westward expansion of P. forsskali along to Mediterranean coasts. The present study also investigated the way of introduction and possible depths of its spread in the Mediterranean Sea.
    Remoras attach to sharks, big fish, and sea turtles and continue their lives with these creatures. Kapızlı and Tekeli beaches are located near Göksu Delta and Anamur nesting areas of Caretta caretta. In this study, two Remora individuals... more
    Remoras attach to sharks, big fish, and sea turtles and continue their lives with these creatures. Kapızlı and Tekeli beaches are located near Göksu Delta and Anamur nesting areas of Caretta caretta. In this study, two Remora individuals were caught with a fishing rod in July, when the ovulation was most intense. The smaller remora individual (33 cm) was caught from the coast of Tekeli with the chicken breast at a depth of 2.5 m, and the larger one (66 cm) with bread at a depth of 1.5 m from Kapızlı beach on 24.07.2020. The two Remora individuals caught were probably attached to the sea turtles. However, probably due to sea turtles going to the beach to lay eggs, Remoras started to free-swimming, and they were caught with the fishing line since they could not be fed. The present study reported that the first occurrence of Remora specimens is probably attached to turtles for Turkey's northeastern Mediterranean coast. Besides, this study is provided some morphometric and meristic ...
    The aim of this study was to investigate the distribution patterns of demersal fishes on the continental shelves of the north-eastern Levantine and north-eastern Aegean seas. Fish samples were collected by bottom trawl. A total of 29... more
    The aim of this study was to investigate the distribution patterns of demersal fishes on the continental shelves of the north-eastern Levantine and north-eastern Aegean seas. Fish samples were collected by bottom trawl. A total of 29 hauls were carried out, 15 hauls between 43 to 121 m depth in the north-eastern Levantine Sea and 14 hauls between 65 to 100 m depth in the north-eastern Aegean Sea. The total trawled area for both region was 1.87 km 2 . Cluster analysis and non-metric multidimensional scaling were applied to identify hauls grouping. Among 114 fish species found, 84 were recorded in the north-eastern Levantine Sea and 64 in the north-eastern Aegean Sea. Fifty species were found exclusively from the northeastern Levantine Sea, 30 species exclusively from the north-eastern Aegean Sea and 34 species were shared by the two areas. The Lessepsian migrants, Upeneus moluccensis, Equulites klunzingeri, Saurida undosquamis, and the indigenous species Pagellus erythrinus were the ...
    On 10 November 2017, a young male common bottlenose dolphin Tursiops truncatus (Montagu, 1821), 185 cm in total length (TL), was found dead on the Mersin Marina (36°46'065"N, 34°34'212"E) in Northeastern Mediterranean... more
    On 10 November 2017, a young male common bottlenose dolphin Tursiops truncatus (Montagu, 1821), 185 cm in total length (TL), was found dead on the Mersin Marina (36°46'065"N, 34°34'212"E) in Northeastern Mediterranean coast of Turkey. Measurements of the sample performed and documented. The specimen buried to obtain the skeleton of the individual. At the end of this process, the sample was deposited in the Museum of the Systematic, Faculty of Fisheries, Mersin University, (Catalogue no: MEUMC-17- 11-001). The morphometric measurements can contribute to ongoing fisheries biology and taxonomic studies of T. truncatus from Mediterranean Sea waters. During routine fishing activities, common bottlenose dolphins can be caught in fishing nets and drowned. This issue leads to an extra population loss in addition to environmental factors that cause dolphin deaths. At the national level, measures should be implemented to protect dolphins and other marine species caught off -...
    Aims: In this study, an individual of H. griseus was caught from the Mersin Bay and this ichthyologic note presents a new female record of H. griseus for Mersin Bay, Mediterranean coast of Turkey. This study aims to contribute to the... more
    Aims: In this study, an individual of H. griseus was caught from the Mersin Bay and this ichthyologic note presents a new female record of H. griseus for Mersin Bay, Mediterranean coast of Turkey. This study aims to contribute to the chronological records of the species in the Mediterranean Sea. Place and Duration of Study: Yeşilovacık bay is a small bay in the west of Mersin Bay. Yeşilovacık bay which lies at approximately 36°07’n latitude, 33°37’e, longitude and about 143 km Western of in Mersin province, Turkey. Sample: On 19 March 2018 blunthose sixgill shark specimen was measured and then deposited in the Museum of the Systematic, Faculty of Fisheries, University of Mersin. Methodology: A female specimen of H. griseus with a total length (TL) of 350 cm (400 kg) was captured by a commercial trawl at a depth around of 280 m of the Yeşilovacık Bay (Northeastern Mediterranean Sea), Turkey. Total length was measured to the nearest 1 mm and the weight of the specimen was determined t...

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