Feeding Ecology of Thornback Ray, Raja clavata (Linnaeus 1758) in Gökçeada Island, Northern Aegean Sea, Turkey

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dc.authorid0000-0002-2973-5698en_US
dc.authorid0000-0001-5254-1384en_US
dc.authorid0000-0002-8808-2252en_US
dc.authorscopusid56590062800en_US
dc.authorscopusid5721126423en_US
dc.authorscopusid14626850900en_US
dc.authorwosidAAQ-2877-2021en_US
dc.authorwosidABG-4078-2021en_US
dc.authorwosidAAB-9423-2022en_US
dc.contributor.authorDaban, İsmail Burak
dc.contributor.authorCabbar, Koray
dc.contributor.authorYığın, Cahide Çiğdem
dc.date.accessioned2023-05-23T08:07:48Z
dc.date.available2023-05-23T08:07:48Z
dc.date.issued2022en_US
dc.departmentFakülteler, Deniz Bilimleri ve Teknolojisi Fakültesi, Avlama ve İşleme Teknolojisi Bölümü
dc.departmentFakülteler, Deniz Bilimleri ve Teknolojisi Fakültesi, Su Ürünleri Temel Bilimler Bölümü
dc.description.abstractThe dietary composition and nutritional alteration resulting from time and size of thornback ray, Raja clavata, were investigated in the present research. For this purpose, the individuals were obtained from the commercial bottom trawl vessels operated around Gökçeada Island, North Aegean Sea, Turkey between February 2019 and February 2020. The female:male ratio was found to be 1:0.79. The vacuity index was calculated for males, females and both individuals to be 5.8%, 4.7%, and 5.3%, respectively. The major food item groups were determined to be decapod crustaceans, teleost fish, and cepholopoda with IRI% (Index of Relative Importance) values of 77.72, 7.05, and 0.25, respectively. The best-represented food item was found to be Goneplax rhomboides. The prey types, abundance, and biodiversity were observed to change with the increasing lengths of R. clavata. The trophic level (TLw) of R. clavata was calculated to be 3.27, and it was observed that the TLw values were increased with the increasing individual length. The diet overlap was found to range from 40 to 49 cm and 50 to 59 cm TL in autumn and winter. The highest prey biodiversity was found in the length group of 70–85 cm TL and during spring. This study presents detailed findings on the feeding behaviour of R. clavata. In the future, food competition between the species should be monitored to develop a better understanding of the diet overlap. Thus, more comparisons should be conducted between the studies performed in varied geographical areas.en_US
dc.identifier.citationDaban, İ. B., Cabbar, K., & Yığınn, C. Ç. (2022). Feeding ecology of thornback ray, raja clavata (linnaeus 1758) in gökçeada island, northern aegean sea, turkey. Thalassas, 38(1), 197-211. doi:10.1007/s41208-021-00363-8en_US
dc.identifier.doi10.1007/s41208-021-00363-8
dc.identifier.endpage211en_US
dc.identifier.issn0212-5919
dc.identifier.issn2366-1674
dc.identifier.issue1en_US
dc.identifier.scopus2-s2.0-85116686678
dc.identifier.startpage197en_US
dc.identifier.urihttps://doi.org/10.1007/s41208-021-00363-8
dc.identifier.urihttps://hdl.handle.net/20.500.12428/4192
dc.identifier.volume38en_US
dc.identifier.wosWOS:000704934100001
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorDaban, İsmail Burak
dc.institutionauthorCabbar, Koray
dc.institutionauthorYığın, Cahide Çiğdem
dc.language.isoen
dc.publisherSpringer Science and Business Media Deutschland GmbHen_US
dc.relation.ispartofThalassasen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.relation.tubitakinfo:eu-repo/grantAgreement/TUBITAK/SOBAG/119Y060
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectItemen_US
dc.subjectOverlapen_US
dc.subjectSkatesen_US
dc.subjectStomachen_US
dc.titleFeeding Ecology of Thornback Ray, Raja clavata (Linnaeus 1758) in Gökçeada Island, Northern Aegean Sea, Turkey
dc.typeArticle

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