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Öğe A Contribution on the Diet of the Warty Crab, Eriphia verrucosa (Forskal, 1775) by Informative Bayesian Stable Isotope Mixing Models(Maik Nauka/Interperiodica/Springer, 2022) Acar, Secil; Gurkan, Selin Erturk; Ates, A. Suat; Ozdilek, Sukran YalcinThe present study aims to determine the diet composition of Eriphia verrucosa using an informative and uninformative approach in which the stomach content results were assigned as prior based on this model. A stable isotope mixing model and stomach content analysis were used together to determine the diet and prey-predator relationships of E. verrucosa. A total of 24 crabs and benthic material were collected from depths between 1.5 and 2 m in the Strait of canakkale in July, 2020. The contribution of two different diets was assessed both by prior assignment (informative) and uninformative. According to the stomach content analyses, among the prey, Echinodermata contributed 37% to the diet, followed by Mollusca, especially Gastropoda (18%). In the uninformative model without prior assignment and in the informative model (prior assignment), Gastropoda contributed the most to the diet (57, 66%, respectively).Öğe A new record of the Lessepsian shrimp, Ogyrides mjoebergi (Balss, 1921) (Decapoda, Ogyrididae) from the Levantine coast of Turkey(Brill Academic Publishers, 2008) Oezcan, Tahir; Katagan, Tuncer; Ates, A. Suat[Anstract Not Available]Öğe A Study on the Relationships between Some Morphological and Reproductive Traits of the Turkish Crayfish, Astacus leptodactylus Eschscholtz, 1823 (Crustacea: Decapoda)(Taylor & Francis Inc, 2010) Berber, Selcuk; Yildiz, Harun; Ates, A. Suat; Bulut, Musa; Mendes, MehmetThis study was carried out to investigate relationships between some morphological and reproductive traits of the Turkish crayfish, A. leptodactylus, collected from a controlled irrigation lake in the Yenice province (Canakkale, Turkey), between July 2007 and June 2008. For this objective, two multivariate analysis techniques, namely canonical correlation analysis and multivariate multiple linear regression analysis, were used. The results of the canonical correlation analysis have shown that the morphological traits may be used to predict the changes in the reproductive traits. For instance, canonical correlation analysis results suggested that the egg weight and the number of eggs are related to the total length, carapace length, and carapace width. The results of multivariate multiple linear regression analysis, on the other hand, show a slightly different picture. Therefore, it is possible to conclude that both canonical correlation and multivariate regression results can be taken into consideration together when investigating the relations between two variable sets.Öğe Assessment of physical carrying capacity of a mariculture zone designated in the Aegean Sea(Springer, 2024) Yigit, Murat; Ergun, Sebahattin; Buyukates, Yesim; Ates, A. Suat; Ozdilek, H. Goksel; Acar, SecilThe present study was conducted to evaluate the physical carrying capacity in a mariculture zone designated for cage aquaculture in the Aegean Sea (Mersin Bay, Izmir, Turkiye). Rapid assessment of carrying capacity for the approval of new investments or capacity increase requests environment-regulated timely management procedures for the sustainable development of the drastically growing cage aquaculture industry in the Mediterranean. Hence, the mathematical estimations earlier developed for the Mediterranean area have been applied for the carrying capacity assessment using the data gathered from eight fish farms operating in the area. The data collected from the farms comprised the information such as current granted production level, surface area, location depth, current speed, shore distance, and coordinates of the farm sites. The results obtained showed an estimated carrying capacity for the investigated mariculture zone as 252,852 tons which is about 18 times the current production level of 13,500 tons that was granted in total for the sum of eight cage farms in the region with a total of 50.89-ha surface area. It can be concluded that, with the condition of periodic environmental monitoring to keep the marine ecosystem below eutrophication risk, the production capacity of farms in the designated mariculture zone, comprising a surface area of 50.89 ha, could be increased by 18-fold over the present production level, which is far below the risk threshold. The findings of this study provide important support for decision-makers in the management of intensive cage aquaculture operations in the Mediterranean region.Öğe COMMERCIAL CRUSTACEANS ON THE LEVANTINE SEA COAST OF TURKEY(Turkish Marine Research Foundation-Tudav, 2016) Ozcan, Tahir; Ates, A. Suat; Bakir, Kerem; Katagan, Tuncer[Anstract Not Available]Öğe COMMERCIAL DECAPOD AND STOMATOPOD CRUSTACEANS IN THE TURKISH AEGEAN SEA(Turkish Marine Research Foundation-Tudav, 2015) Ates, A. Suat; Ozcan, Tahir; Katagan, Tuncer[Anstract Not Available]Öğe Decapod crustaceans in benthic habitats of the Turkish Straits System with new records(Walter De Gruyter Gmbh, 2018) Bakir, Ahmet Kerem; Ates, A. SuatThe objective of this study was to investigate decapod species occurring in the Turkish Straits System. For this purpose, benthic samples were collected from six different biotopes (photophilic algae, Cystoseira barbata, meadows, Posidonia oceanica, mussel, Mytilus galloprovincialis, meadows, Zostera marina, serpulid reef, and rocks) at depths ranging from 10 to 1000 m. A total of 60 species of decapod crustaceans were identified, including new records for the Turkish Straits System: Processa elegantula, P. modica, Richardina fredericii, Callianassa subterranea, Gourretia denticulata, Inachus parvirostris and Macropodia linaresi. In addition, some information about the spatial and bathymetric distribution as well as biotope preferences of the decapod community is provided.Öğe Decapod crustaceans of soft-sediments on the Aegean Sea coast of Turkey (the eastern Aegean Sea)(Univ Gdansk, 2008) Ates, A. Suat; Katagan, Tuncer58 species of decapod crustacean were identified (1 Dendobranchiata, 14 Caridea, 5 Thalassinidea, 14 Anomura, 24 Brachyura) on soft substrates of the Aegean Sea coast of Turkey. Samples were collected from 60 sampling sites along the Turkish Aegean shore (eastern Aegean Sea) between July 2000 and September 2000 with dredge and a van Veen grab at bottom depths of 7 to 150 m. Different species dominated in each ecological zone with the anomuran squat lobster, Galathea intermedia Lilljeborg, 1851, being the most dominant species across the whole sampling area, comprising 11.71% of the individuals collected. This report represents the first published investigations into soft-sediment decapod communities in the coastal waters of the Turkish Aegean Sea.Öğe Decapod crustaceans of the coast along the Historical National Park of the Gallipoli Peninsula, Turkey(Brill Academic Publishers, 2007) Ates, A. Suat; Cirik, Sukran; Celik, E. Sanver; Akbulut, Mehmet; Aslan, HerdemDuring recent faunistic samplings, a total of 57 species of decapod crustaceans was collected in the coastal waters of the Historical National Park located on the Gallipoli Peninsula (including the northeastern Aegean Sea and Dardanelles). The samples were taken at depths ranging between W and 28 m at 10 different stations chosen along the coasts of the peninsula in July, 2005. A total of 1425 individuals belonging to 57 species was identified. The dominance of the species varies in each ecological zone; the caridean, Philocheras trispinosus (Hailstone, 1835) was commonest, with a dominance value of 13.79%.Öğe Decapod Crustaceans on the Coast of Gokova Bay (the southeastern Aegean Sea)(Ege Univ, 2007) Ates, A. Suat; Katagan, Tuncer; Kocatas, AhmetThe present study is on decapod crustaceans found on the coast of Gokova Bay (the southeastern Aegean Sea). A total of 358 specimens belong to 51 species (17 carideans, 11 anomurans, 1 thalassinid, and 22 brachyurans) was collected during experimental benthos samplings in the area. The brachyuran crabs was dominant component of decapod assemblage in the area by a total of 22 species and an occurrence frequency of 43,13%. The caridean shrimp, Lysmata seticaudata (Risso, 1816) was most dominant species by dominance value of 19,83%.Öğe Effects of some heavy metals on hatching of fertilized eggs in four marine fish species in Aliaga Bay (Eastern Aegean Sea), Turkey(Asian Journal Of Chemistry, 2008) Bulut, Musa; Akbulut, Mehmet; Ates, A. Suat; Mendes, MehmetThe present study was carried out to determine the effects of some heavy metals Such as Cd, Mn, Zn on hatching success of fertilized eggs of four marine fish species, Dicentrarchus labrax (Linnaeus, 1758), Spat-Lis aurata (Linnaeus, 1758), Dentex dentex (Linnaeus, 1758), Lithognathus mormyrus (Linnaeus, 1758) in Aliaga Bay (Eastern Aegean Sea). The relationships between heavy metal concentrations in eggs and their hatching success were determined by multiple linear regression analysis. Results showed that magnitude and type of the effects of the three heavy metals studied in this research on egg hatching ratios differed based on fish species. In terms of the magnitude of the effect, Zn has a greater effect than Cd and Mn on the hatching in D. dentex, while it is smaller in D. labrax. The effects-of Zn on egg hatching are in the same direction and about the same level for S. aurata and L mormyrus.Öğe First observation of the zebra mussel (Dreissena polymorpha (Pallas, 1771)) on the narrow-clawed crayfish inhabiting in some water sources of Turkey(Ege Univ, Fac Fisheries, 2018) Berber, Selcuk; Ates, A. Suat; Acar, SecilThe zebra mussel, Dreissena polymorpha (Pallas, 1771) is considered as a harmful invasive epibiont species for hydroelectric and nuclear power plants as it reduces or blocks water flow in the plant systems. Although D. polymorpha is reported that it cleans the water, increases water visibility, and filters out pollutants, it has likewise negative impacts on the population and size of some fish and aquatic species. In the present study, zebra mussels were observed for the first time. On the narrow-clawed crayfish living in some water sources in Turkey. Specimens were collected from two natural lakes (Cildir Lake, Egirdir Lake) and five ponds (Altinyazi Dam Lake, Keban Dam Lake, Kucukcekmece Lake, Karpuzlu Dam Lake, Kadikoy Dam Lake) in Turkey. Attachments of the zebra mussel to the different body parts of the narrow-clawed crayfish were documented in the present study. Cochran's Q test results showed that the numbers of mussels clinging to the different parts of the crayfish varied (P=0.000) (P < 0.001). The difference between the holding regions of zebra mussels on crayfish specimens may cause some adverse effects on the host. Particularly the intensive grip on the carapace partially obstruct the movement, feeding, mating, avoiding predators, and shelter. mussel individuals in the pleopodal region may have difficulty holding and transporting eggs. This study is the first report about the occurrence of D. polymorpha on Astacus leptodactylus in Turkish waters.Öğe New records of anthozoan species (Cnidaria, Octocorallia, Hexacorallia) for the Turkish Straits System(Walter De Gruyter Gmbh, 2015) Ozalp, H. Baris; Ates, A. SuatThis study includes new records of soft corals found in the Turkish Straits System (Dardanelles) between 2013-2014. In the above-mentioned area, 50 stations were searched by scientific divers from the intertidal zone to a depth of over 45 m and the ecological characteristics with substrate differences were also recorded. A total of 47 cnidarians were examined during the surveys. Eleven anthozoan species (Aiptasia mutabilis, Alcyonium acaule, Andresia parthenopea, Calliactis parasitica, Cereus pedunculatus, Condylactis aurantiaca, Epizoanthus couchii, Maasella edwardsi, Pteroeides spinosum, Sarcodictyon roseum, Veretillum cynomorium) belonging to 4 orders are new to the Dardanelles strait, one of which is reported from the Marmara Sea. The current data contributed to the advancement of the knowledge about anthozoan species in the Turkish Seas.Öğe New unusual associations involving parasitic isopods(Brill Academic Publishers, 2006) Ates, A. Suat; Trilles, Jean-Paul; Ismen, Ali; Yigin, C. Cigdem[Anstract Not Available]Öğe Notes on amphipods Caprella andreae Mayer, 1890 and Podocerus chelonophilus (Chevreux & Guerne, 1888) collected from the loggerhead sea turtle, Caretta caretta, off the Mediterranean and the Aegean coasts of Turkey(Tubitak Scientific & Technological Research Council Turkey, 2009) Sezgin, Murat; Ates, A. Suat; Katagan, Tuncer; Bakir, Kerem; Ozdilek, Sukran YalcinThe present study reports the occurrence of 2 amphipod species, Caprella andreae Mayer, 1890 and Podocerus chelonophilus Chevreux & Guerne, 1888, that appeared on the carapace of the loggerhead turtle Caretta caretta (Linnaeus, 1758) in the eastern Mediterranean Sea (Levantine Sea). The amphipod specimens were found on a male Caretta caretta captured during experimental bottom studies conducted off Samandag, Hatay (the Turkish Mediterranean coast) on 7 April 2007. In addition, Caprella andreae Mayer 1890 was collected from the nets of fish cages off the Seferihisar (Aegean Sea) coast (38 degrees 11'32 '' N, 26 degrees 38'07 '' E). C. andreae is a first report for the amphipod fauna in Turkish seas.Öğe Occurrence of the Scavenger Crustaceans Natatolana neglecta (Hansen, 1890) (Isopoda: Cirolanidae) and Scopelocheirus hopei (Costa in Hope, 1851) (Amphipoda: Scopelocheiridae) on Bento-pelagic Fish Species in the Turkish Straits System(Inst Zoology, Bas, 2022) Mulayim, Aysegul; Ates, A. Suat; Sen, Yusuf; Ozekinci, Ugur; Acar, SecilThe scavenger crustaceans Natatolana neglecta (Hansen, 1890) (Isopoda: Cirolanidae) and Scopelocheirus hopei (Costa in Hope, 1851) (Amphipoda: Scopelocheiridae), along with several other peracarid crustaceans, were recorded on demersal fish species in the Turkish Straits System. Samples were collected on (in) Raja clavata, Chelidonichthys lucerna, Trachurus sp., Scorpaena scrofa, Merluccius sp., Solea solea and Squalus acanthias captured by trammel nets at depth of 50 m on 26(th) January 2021. Natatolana neglecta, Scopelocheirus hopei and Nebalia abyssicola Ledoyer, 1997 are new for the fauna of the Turkish Straits System.Öğe On the occurrence of the Mediterranean endemic majid crab, Inachus parvirostris (Risso, 1816) (Decapoda, Brachyura, Majidae) in Turkish seas(Brill Academic Publishers, 2008) Ates, A. Suat; Ozcan, Tahyr; Katagan, Tuncer[Anstract Not Available]Öğe POPULATION STRUCTURE, GROWTH AND REPRODUCTION CHARACTERISTICS OF THE PORTUNID CRAB, CARCINUS AESTUARII NARDO, 1847 (DECAPODA, CARCINIDAE) IN CARDAK LAGOON, TURKISH STRAITS SYSTEM(Brill, 2020) Acar, Secil; Ates, A. SuatThe aim of the present study was to determine the population structure and bioecological characteristics of the portunid crab, Carcinus aestuarii in Cardak Lagoon. In this study, the crabs were sampled by means of fyke-nets at 6 different stations between April 2015 and March 2016. A total of 2458 individuals (686 females, 1755 males, and 17 juveniles) were captured. The average carapace length was measured as 38.85 +/- 0.17 mm in females, and 47.65 +/- 0.16 mm in males. The highest number of specimens was observed in November with 239 individuals, while the lowest number (125 specimens) was observed in February. The reproductive period in both sexes was between November and February and females with eggs were found in November, February and March. An average number of eggs in a female was 61 390 +/- 8.48 and the egg diameter was 345 mu m. The female : male ratio was 0.39 : 1. This paper includes the first published data on population structure, growth, and reproduction characteristics of C. aestuarii in a protected lagoon in the Turkish Straits System.Öğe Potential Impacts of a Waste Reception Facility on Stable Isotope Composition of Zooplankton and Particulate Organic Matter in the Dardanelles(Hard, 2020) Uzundumlu, Sinan; Buyukates, Yesim; Ates, A. SuatIn this study, seasonal stable isotope compositions of zooplankton and particulate organic matter were analyzed from the coastal zone in Kepez Harbor, the discharge point of a waste treatment plant. The results were compared with the results of a control station located 10 km away from the harbor. Zooplankton samples were collected horizontally with a 200 mu m mesh plankton net from the surface waters. POM samples were collected with a 5L Nansen bottle and filtered through precombusted GF/F filters. Variables such as temperature, salinity, chlorophyll-a as well as oil-grease and chemical oxygen demand were also determined in the study sites. The salinity values in the control station were significantly higher than the harbor station through the whole year. The delta C-13 values of POM in the control station were significantly higher than the values observed in the harbor station. The delta N-15 values of zooplankton in the harbor were higher than the values obtained in the control station; however, the differences were not significant. The values of oil-grease obtained in two stations were lower than the values pronounced in EPA, EU, and Turkish Regulations. The study showed that the stable isotope compositions were affected by terrestrial inputs and high currents rather than the facilities comprised in the harbor.Öğe Presence of microplastics in the stomachs of Carcinus aestuarii Nardo, 1857 in Cardak Lagoon, Canakkale Strait, Turkey(Cahiers De Biologie Marine, 2018) Acar, Secil; Ates, A. SuatThis paper reports the presence of microplastic in the stomachs of the Mediterranean green crab, Carcinus aestuarii Nardo, 1857. The crabs were collected from six sites chosen in the Cardak Lagoon (Canakkale Strait). Plastic fibers were observed in the stomach contents of three male individuals. Since C. aestuarii is an important food for fish and birds in estuarine and lagoon areas, microplastics can go up to the trophic levels by entering the food chain.
