Biology of the thornback ray (Raja clavata Linnaeus, 1758) in the North Aegean Sea

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dc.authorid0000-0001-5254-1384en_US
dc.authorid0000-0002-8808-2252en_US
dc.authorscopusid57211264233en_US
dc.authorscopusid14626850900en_US
dc.authorwosidABG-4078-2021en_US
dc.authorwosidAAB-9423-2022en_US
dc.contributor.authorCabbar, Koray
dc.contributor.authorYığın, Cahide Çiğdem
dc.date.accessioned2023-07-24T11:36:24Z
dc.date.available2023-07-24T11:36:24Z
dc.date.issued2021en_US
dc.departmentFakülteler, Deniz Bilimleri ve Teknolojisi Fakültesi, Su Ürünleri Temel Bilimler Bölümü
dc.description.abstractThe study deals with aspects of the population dynamics in the thornback ray (Raja clavata L., 1758), one of the most abundant cartilaginous fish caught in the North Aegean Sea. Females accounted for 73.08% and males 26.92% of all individuals. Total length of females and males ranged between 50.2 and 89.9 cm (disc width: 33.4-62.0 cm), and between 43.1 cm and 82.7 cm (disc width: 30.7-64.2 cm), respectively. Relationships between total length (TL) and total weight (TW), and between disc width (DW) and total weight (TW) were described by the equations: TW = 0.0041 TL3.10 and TW = 0.0178 DW3.03, respectively. Age data derived from vertebrae readings were used to estimate growth parameters using the von Bertalanffy function: L∞ = 101.71 cm, K = 0.18 y-1, t0 = -0.07 y for males and L∞ = 106.54 cm, K = 0.16 y-1, t0 = -0.28 y for females. The maximum age was 8 years for males and females. Total length at first maturity of males and females was 70.9 cm and 81.2 cm, respectively. Based on the gonadosomatic index and gonadal macroscopic observations, it was determined that the spawning period lasted throughout the year. Stomach content analysis showed that crustaceans (53.03% IRI) and teleosts (14.70% IRI) were the most preferred prey.en_US
dc.identifier.citationCabbar, K., & Yığın, C. Ç. (2021). Biology of the thornback ray (raja clavata linnaeus, 1758) in the north aegean sea. Oceanological and Hydrobiological Studies, 50(2), 115-127. doi:10.2478/oandhs-2021-0011en_US
dc.identifier.doi10.2478/oandhs-2021-0011
dc.identifier.endpage127en_US
dc.identifier.issn1730-413X
dc.identifier.issn1897-3191
dc.identifier.issue2en_US
dc.identifier.scopus2-s2.0-85107979019
dc.identifier.startpage115en_US
dc.identifier.urihttps://doi.org/10.2478/oandhs-2021-0011
dc.identifier.urihttps://hdl.handle.net/20.500.12428/4419
dc.identifier.volume50en_US
dc.identifier.wosWOS:000662991800001
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorCabbar, Koray
dc.institutionauthorYığın, Cahide Çiğdem
dc.language.isoen
dc.publisherDe Gruyter Open Ltden_US
dc.relation.ispartofOceanological and Hydrobiological Studiesen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/us/*
dc.subjectAge and growthen_US
dc.subjectFeedingen_US
dc.subjectNorth Aegean Seaen_US
dc.subjectRaja clavataen_US
dc.subjectReproductionen_US
dc.titleBiology of the thornback ray (Raja clavata Linnaeus, 1758) in the North Aegean Sea
dc.typeArticle

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