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Öğe A brief look at the free-living Nematoda of the oxic/anoxic interface with a new genus record (Trefusia) for the Black Sea(Walter De Gruyter Gmbh, 2015) Urkmez, Derya; Brennan, Michael L.; Sezgin, Murat; Bat, LeventIn order to provide the first comparative source of nematofaunal data at the oxic/anoxic interface off the Sinop Peninsula, the southern Black Sea, a survey of meiofauna and nematode fauna was conducted in August 2011 aboard the exploration vessel (E/V) Nautilus with ROV during the Black Sea Expedition NA012. Higher meiofaunal taxa and nematode composition were investigated. Free-living marine nematodes were the most abundant group at each site. A total of 84 species were found, belonging to 23 families. The suboxic zone was dominated by the nematode Trefusia aff. longicauda (42%). This is the first record of the genus Trefusia De Man, 1893 for the Black Sea. Although many factors are likely to influence the changes in the meiofaunal abundance and the composition of nematode assemblages, we suggest that oxygen reduction indeed affected the meiofaunal abundance and the nematode composition, however, a particular preference of several taxa for extreme conditions may be suggested.Öğe A new species of amphipod, Megamphopus katagani sp nov (Crustacea: Peracarida: Photidae) from the Sea of Marmara (Turkey), with a key to the species of Megamphopus in the North Atlantic, Mediterranean and associated Seas(Magnolia Press, 2011) Bakir, Kerem; Sezgin, Murat; Myers, Alan A.A new species of amphipod, Megamphopus katagani sp. nov., is described from the sea of Marmara (Turkey). A key to the species of Megamphopus known from the North-East Atlantic, Mediterranean and associated seas is provided.Öğe A new species of amphipod, Megamphopus katagani sp. nov. (Crustacea: Peracarida: Photidae) from the Sea of Marmara (Turkey), with a key to the species of Megamphopus in the North Atlantic, Mediterranean and associated Seas(Magnolia Press, 2011) Bakir, Kerem; Sezgin, Murat; Myers, Alan A.A new species of amphipod, Megamphopus katagani sp. nov., is described from the sea of Marmara (Turkey). A key to the species of Megamphopus known from the North-East Atlantic, Mediterranean and associated seas is provided. Copyright © 2011.Öğe A report on parasitic isopods (Crustacea) from marine fishes and decapods collected from a report on parasitic isopods (crustacea) from marine fishes and decapods collected from the Eegean Sea (Turkey)(2008) Kirkim, Fevzi; Kocataş, Ahmet; Katağan, Tuncer; Sezgin, Murat1997-1998 tarihleri arasında Ege Denizi'nde örneklenen deniz balıkları ve dekapodlarının parazitik isopodları araştırılmıştır. Balık ve dekapod türlerine ait çeşitli vücut parçalarından Cymothoidae, Gnathiidae ve Bopyridae familyalarına ait toplam 10 tür tespit edilmiştir. Ceratothoa capri ve Paragnathia formica Türkiye kıyılarındaki konakçılarından ilk kez rapor edilmektedir.Öğe A Report on Parasitic Isopods (Crustacea) from Marine Fishes and Decapods Collected from The Aegean Sea (Turkey)(Turkish Journal of Parasitology, 2008) Kırkım, Fevzi; Kocataş, Ahmet; Katağan, Tuncer; Sezgin, MuratParasiti c isopods were investigated in marine fishes and decapods from the Aegean Sea during 1997 - 1998. A total of 10 species belonging to families Cymothoidae, Gnathiida e and Bopyridae was collected from various body parts of fishes and decapods. Ceratothoa capri and Paragnathia formica have been recorded for the first time from Turkish coasts.Öğe Acute toxicity of zinc, copper and lead to three species of marine organisms from Sinop Peninsula, Black Sea(Turkish Journal of Biology, 1999) Bat, Levent; Gündoğdu, Ayşe; Sezgin, Murat; Çulha, Mehmet; Gönlügür, Gamze; Akbulut, MehmetAcute toxicity tests were performed on Echinogammars olivii (Amphipoda), Sphaeroma serratum (Isopoda) and Palaemon elegans (Decapoda), from the Sinop Peninsula in the Black Sea. 96- h LC 50 values were estimated for copper, zinc and lead in these species using the static bioassay method. The LC 50 values of Cu for E. olivii, S. serratum and P. elegans were 0.25, 1.98 and 2.52 mg/l, respectively. The LC 50 values of Zn for E. olivii , S. serratum and P. elegans were 1.30, 6.12 and 12.3 mg/l, respectively. The LC 50 values of Pb for E. olivii, S. serratum and P. elegans were 0.62, 4.61 and 5.88 mg/l, respectively. The results indicated that Cu was more toxic to the species followed by Pb and Zn. E. olivii was more sensitive to the metals than S. serratum and P. elegans.Öğe Amphipod Fauna of the Turkish Central Black Sea Region(Turkish Journal of Zoology, 2001) Sezgin, Murat; Kocataş, Ahmet; Katağan, TuncerFollowing research into amphipod fauna in the central Black Sea region of Turkey, forty-two species of benthic amphi- pod were recorded. Of these, Ampelisca pseudospinimana, Gammarellus angulosus, Hyale crassipes, Leptocheirus pilosus, Orchestia mediterranea and Orchestia stephenseni are reported from the Turkish Black Sea for the first time, and Microdeutopus versiculatus and Nannonyx propinquus are new records for Turkish waters. With this study, the number of amphipod species known from the Turkish Black Sea coast has increased from fifty-seven to sixty-five.Öğe Benthic amphipod (Crustacea) fauna of the Bandirma and Erdek Gulfs and some environmental factors affecting their distribution(Inst Oceanografiju I Ribarstvo, 2015) Mulayim, Aysegul; Balkis, Husamettin; Sezgin, MuratThis study aims to determine the environmental factors affecting the fauna and distribution of benthic amphipod species inhabiting in the Bandirma and Erdek Gulfs which are located on the south of the Marmara Sea. Total of 66 species belonging to 22 families were identified after analyzing the samples collected seasonally from the depths ranging between 1 and 30 m between 2007-2008. According to the data gathered from the literature, it was determined that one species (Bathyporeia elegans Watkin, 1938) was a new record for the Turkish seas and 37 species for the Marmara Sea. In the Bandirma Gulf, of the ecological variables of the environment temperature was determined to range between 6.6-27 degrees C, salinity between 21.32-36.03 psu, dissolved oxygen between 4.04-11.26 mg l(-1) and pH between 8.00-8.38. In the Erdek Gulf, temperature ranged between 6.7 and 27 degrees C, salinity between 21.93-35.54%, dissolved oxygen between 3.67-13.26 mg l(-1) and pH between 8.06-8.36. In the surface sediment at the sampling stations of the Bandirma Gulf, total organic carbon values were between 0.07-4.42%, total calcium carbonate between 0.88-84.82%, total phosphorus between 609-12740 mu g g(-1) and mud percentage between 1.38-79.93%. In the Erdek Gulf, total organic carbon ranged between 0.08-2.89%, total calcium carbonate between 0.74-80.06%, total phosphorus between 376-3614 mu g g(-1) and mud percentage between 2.12-95.65%.Öğe Benthic invertebrate fauna of Urla Harbour (Izmir Bay, Aegean Sea) and its vicinity(Ege Univ, 2007) Aydin, Ozden; Onen, Mesut; Dogan, Alper; Dagli, Ertan; Sezgin, Murat; Katagan, Tuncer; Ozturk, BilalIn order to determine benthic invertebrate fauna of Urla Harbour and its vicinity, four samplings were performed at 8 stations between February 2001 and December 2001. As a result, 283 species and 14492 individuals belonging to 8 systematic groups were determined. Seasonal fluctuations at the stations were examined and conspicuous seasonal changes at the stations 2 and 3, because of pollution in the harbor, were observed.Öğe Biological Diversity of the Turkish Black Sea Coast(Turkish Journal of Fisheries and Aquatic Sciences, 2011) Bat, Levent; Sezgin, Murat; Satılmış, Hasan Hüseyin; Şahin, Fatih; Üstün, Funda; Özdemir, Zekiye Birinci; Baki, Oylum GökkurtIn this review a comprehensive biodiversity characteristic of the Black Sea is given. A brief historical survey of the investigations on the biodiversity of the Black Sea coast is followed by the data about the present status of the Turkish Black Sea marine biodiversity. Additional data about the density, biomass and distribution of the widespread Black Sea inhabitants are also given. The impact of the invasive species on the Black Sea ecosystem and some ecological problems to the Black Sea biodiversity are discussed.Öğe Contribution to the knowledge of alien amphip ods off the Turkish coast: Gammaropsis togoensis (Schellenberg, 1925)(Journal of Aquatic Invasions, 2007) Bakır, Kerim; Sezgin, Murat; Katağan, TuncerA total of 236 specimens of the Gammaropsis togoensis (Schellenberg, 1925) were collected in Iskenderun Bay, SE Turkey during 2005-2006. Already known from the Mediterranean coast of Israel, this is the first record of this alien amphipod from Turkey.Öğe Crustacean Biodiversity of Padina pavonia (L.) Facies Along the Aegean Coasts of Turkey(Turkish Journal of Zoology, 2005) Kırkım, Fevzi; Kocataş, Ahmet; Katağan, Tuncer; Sezgin, Murat; Ateş, Abdullah SuatThis research was carried out to determine the crustacean species associated with Padina pavonia facies distributed in the upper-infralittoral zone of the Aegean Sea coasts of Turkey and their bioecological features. The investigations were performed at depths of 2-5 m in 13 different stations chosen in the Aegean Sea in June and July, 1995. As a result of the study, a total of 3279 specimens belonging to 85 species were identified. Of these, Ampithoe ramondi was commonest with a dominance value of 21.47%, followed by Elasmopus pocillimanus with 13.94% and Ericthonius brasiliensis with 4.61%.Öğe Crustacean Diversity Among the Cystoseira Facies of the Aegean Coast of Turkey(Turkish Journal of Zoology, 2004) Kocataş, Ahmet; Katağan, Tuncer; Sezgin, Murat; Kırkım, Fevzi; Koçak, CengizThis study focused on the crustacean fauna of Cystoseira facies in the upper infralittoral zone of the Turkish Aegean coast. Investigations were carried out at 9 stations along a depth gradient of 2 to 5 m in June and July 1995. A total of 2179 specimens belonging to 81 species were identified. Among the species encountered, Ampithoe ramondi was the most common, with a dominance value of 11%, followed by Leptochelia savignyi (7%). Caprella rapax is recorded for the first time from the Aegean coast of Turkey; Corophium acutum, Corophium rotundirostre and Hippolyte varians are new records for the entire Turkish coast.Öğe Crustacean fauna of a mussel culti vated raft system in the Black Sea(Arthropods, 2013) Sezgin, Murat; Çil, Eylem AydemirThe aim of the current study was to make a faunistic analysis of the crustaceans associated with cultivated mussels grown on ropes. Mussel samples from 30 cm ropes were collected from rope-grown mussel beds by hand. The crustacean fauna associated with mussel population were quantified. The density of crustacean fauna associated with mussels was significantly greater within rope-grown mussel assemblages than on other biotopes around.Öğe Determination of Heavy Metals in Some Commercial Fish from the Black Sea Coast of Turkey(Walailak Journal of Science and Technology, 2013) Bat, Levent; Sezgin, Murat; Baki, Oylum Gökkurt; Üstün, Funda; Şahin, FatihIn this study analysis of zinc, copper, lead and cadmium in six of the most commercially important fishes (Trachurus trachurus, Belone belone, Pomatomus saltatrix, Mullus barbatus, Merlangius merlangus euxinus and Engraulis encrasicolus) of the Black Sea coastal waters are presented. The results showed that the Zn concentrations were the highest and Cd concentrations the lowest in edible tissue of the six species. The muscle concentrations of Zn, Cu, Pb and Cd ranged from 6.95 - 34.33, 0.19 - 7.74, 0.02 - 1.51 and 0.02 - 0.18 ppm, respectively. Significant differences in metal concentrations were found between the species (P < 0.05). Higher muscle concentrations of Zn and Cd were found in Merlangius merlangus euxinus than the other species and the lowest concentration of Pb. However, Mullus barbatus contained the highest concentration of Cu and the lowest concentration of Zn and Cd. The highest concentration of Pb was found in Pomatomus saltatrix. In general, the concentrations of these heavy metals were mainly low and below the maximum permissible limit of the food regulations of Turkey and of international standards. Therefore, no public health problem would be raised in the consumption of these fishes.Öğe Distribution of Zn, Cu, Pb and Cd in the Tissues and Organs of Psetta Maxima from Sinop Coasts of the Black Sea, Turkey(Marine Science, 2012) Bat, Levent; Şahin, Fatih; Üstün, Funda; Sezgin, MuratIn the present study, turbot Psetta maxima were selected and analyzed for the Zn, Cu, Pb and Cd concentrations in the muscles, livers and gonads. The results revealed that Zn concentrations were the highest followed by Cu; Pb and Cd being the lowest in the tissues (muscle) and organs (gonads and liver). The liver metal concentrations showed the highest values, whereas the muscle concentrations were the lowest. A comparison between the concentration of each metal found in males and females found significant differences between the sexes for all metals. The liver concentrations of Zn, Cu, Pb and Cd were in the range of 46.89-57.21, 15.96-29.51, 1.75-4.09 and 0.19-0.44 mg/kg wet weight, respectively. The gonad concentrations of Zn, Cu, Pb and Cd were in the range of 37.81-44.11, 6.66-11.32, 0.21-0.34 and 0.14-0.27 mg/kg wet weight, respectively. The muscle concentrations of Zn, Cu, Pb and Cd ranged 18.56-35.33, 1.81-6.11, 0.07-0.21 and 0.016-0.046 mg/kg wet weight, respectively. The values obtained were compared the Turkish Food Codex and Commission Regulation (EC) maximum permitted levels in food. The present study demonstrated that estimated daily and weekly intakes of selected metals via consumption of fish were below the Permissible Tolerable Daily Intake (PTDI) and Provisional Tolerable Weekly Intake (PTWI) values established by FAO/WHO.Öğe Echinoderes dujardinii Claparède, 1863 (Kinorhyncha, Cyclorhagida): A new record for the kinorhynch fauna of Turkey(Centre for Biodiversity of Montenegro, 2016) Ürkmez, Derya; Pardos, Fernando; Sezgin, Murat; Karaçuha, Melek Ersoy; Öksüz, IbrahimMeiobenthic samplings conducted in the framework of a meiobenthos project in the subtidal coastal waters of Sinop Bay, Southern Black Sea revealed the first report of the kinorhynch Echinoderes dujardinii for the marine fauna of Turkey.Öğe Ecological Status of the Sevastopol and Sinop Bays(Mediterranean Coastal Foundation-Medcoast Foundation, 2015) Osadchaya, Tatyana; Alyomov, Sergey; Sezgin, Murat; Bat, Levent; Urkmez, DeryaPresent review is devoted to comparison of the information-ecological portraits of two coastal areas located in the northern (Sevastopol region) and southern (Sinop area) parts of the Black Sea and is based on the results of monitoring studies of the Department of Marine Sanitary Hydrobiology (of a former IBSS and the Institute of Marine Biological Research at present) and the Marine Biology Department of Sinop University Fisheries Faculty. The regions under consideration are an ideal ground for a comparison between coastal ecosystems having the similar ecological risks.Öğe Effects of sewage pollution the structure of the community of Ulva lactuca, Enteremorpha linza and rocky macrofauna in Dışliman of Sinop(Turkish Journal of Biology, 2001) Bat, Levent; Akbulut, Mehmet; Sezgin, Murat; Çulha, MehmetUntreated sewage and domestic wastes from the Sinop outfall enter the Dışliman region. The effect of this on the distribution of Ulva lactuca, Enteromorpha linza and benthic macrofauna and on enviromental parameters was determined. Increases in the growth of opportunistic green algae such as Ulva lactuca and Enteromorpha linza in response to increased nutrient supply in the Dışliman coastal ecosystems in Sinop are reported in the present study. The results of this study show that organic enrichment also increases, with Mytilus galloprovincialis (Mollusca), Erichthonius brasiliensis, Echinogammarus olivii and Amphitoes ramondi, Idotea baltica and Sphaeroma serratum (Crustacea) being the most abundant species.Öğe Evaluation of the Black Sea Land Based Sources of Pollution the Coastal Region of Turkey(The Open Marine Biology Journal, 2009) Bat, Levent; Gökkurt, Oylum; Sezgin, Murat; Üstün, Funda; Şahin, FatihThe Black Sea receives large quantities of unregulated and uncontrolled fresh water with drawl for irrigation purposes, hydro and thermal power generation and the use of coastal areas for permanent human settlements; shipping; and untreated domestic, industrial and agricultural wastes drain into the sea via the rivers or directly. In spite of this, research on the heavy metal pollution in marine biota of the Black Sea is limited. This review prepared to be informed of the urban sewage pollution loads and heavy metal concentrations of Turkish coasts of Black Sea. The urban sewages and heavy metals currently effective in Turkey coasts of the Black Sea so as to bring up the levels of land based sources of pollution with rivers and streams in the sea. The Black Sea has a special importance because of its being a sea that receives two large rivers, Kizilirmak and Yesilirmak and in this investigation we can show that Yesilirmak has higher amount of discharge then other rivers. This investigation was carried out with indicate to determine the aid of land-based sources and marine activities to the Black Sea, bringing up its present state. Total chrome and cadmium concentrations are higher then other heavy metals streams and rivers because of high amount of industrial discharges. The data presented in investigation on the heavy metal contamination of marine organisms were different depending on pollution sources, element and species. According to the evaluation of inventories, the results are rising year by year.
