Ozdemir, SuleymanOzsandikci, UgurBuyukdeveci, FerhatErdem, Yakup2025-03-232025-03-2320210324-0770https://hdl.handle.net/11486/7387Data 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.eninfo:eu-repo/semantics/closedAccessRajiformesRaja clavatalength-weight relationshipBlack SeaArticle7334174232-s2.0-85122097563Q3WOS:000699872700011Q4