Seasonal Variations in the Length-weight Relationships of the Thornback Ray Raja clavata L., 1758 (Chondrichthyes: Rajidae) from the Turkish Black Sea Coast

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dc.authoridERDEM, YAKUP/0000-0003-4754-0963
dc.authoridOzsandikci, Ugur/0000-0002-7246-5494
dc.authoridOzdemir, Suleyman/0000-0002-2247-0703
dc.contributor.authorOzdemir, Suleyman
dc.contributor.authorOzsandikci, Ugur
dc.contributor.authorBuyukdeveci, Ferhat
dc.contributor.authorErdem, Yakup
dc.date.accessioned2025-03-23T19:47:36Z
dc.date.available2025-03-23T19:47:36Z
dc.date.issued2021
dc.departmentSinop Üniversitesi
dc.description.abstractData on seasonal variations of the length-weight relationships of the threatened thornback ray Raja clavata L., 1758 from the Black Sea coastal areas of Turkey are presented. The study was carried out along the Sinop coasts between September 2015 and August 2016. Twelve trammel nets (32 mm, 36 mm and 40 mm mesh size) and 30 turbot gillnets (320 mm mesh size) were used. Totally, 430 thornback rays were analysed to calculate their length-weight relationship. The mean length of all thornback rays was 60.88 +/- 0.91 cm. The values of parameter b were 3.3450, 3.1496 and 3.2525 for females, males and all individuals, respectively. Positive allometric growths (t-test, p < 0.05) were recorded in all groups. The seasonal length-weight relationship of thornback rays was determined as W = 0.0029L(3.1675) (R = 0.9533, N = 323) for summer, W = 0.003L(3.1505) (R = 0.9955, N = 20) for autumn, W = 0.003L(3.1612) (R = 0.9967, N = 16) for winter and W = 0.0022L(3.2412) (R = 0.9866, N = 71) for spring.
dc.description.sponsorshipSinop University Scientific Research Projects Coordination Unit [SUF-1901-14.06]
dc.description.sponsorshipWe thank technical personal of R/V Seydi Ali Reis, Ismail Karakan, Murat Yilmazer, Ali Gorduk, Vehbi Dagdelen and Aydin Cetin (in our heart) for their help in the sea trials. This research has been supported by the Sinop University Scientific Research Projects Coordination Unit. Project Number: SUF-1901-14.06, 2017.
dc.identifier.endpage423
dc.identifier.issn0324-0770
dc.identifier.issue3
dc.identifier.scopus2-s2.0-85122097563
dc.identifier.scopusqualityQ3
dc.identifier.startpage417
dc.identifier.urihttps://hdl.handle.net/11486/7387
dc.identifier.volume73
dc.identifier.wosWOS:000699872700011
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherInst Zoology, Bas
dc.relation.ispartofActa Zoologica Bulgarica
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250323
dc.subjectRajiformes
dc.subjectRaja clavata
dc.subjectlength-weight relationship
dc.subjectBlack Sea
dc.titleSeasonal Variations in the Length-weight Relationships of the Thornback Ray Raja clavata L., 1758 (Chondrichthyes: Rajidae) from the Turkish Black Sea Coast
dc.typeArticle

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