Seasonal Variations in the Length-weight Relationships of the Thornback Ray Raja clavata L., 1758 (Chondrichthyes: Rajidae) from the Turkish Black Sea Coast
Yazarlar (4)
Prof. Dr. Süleyman ÖZDEMİR Sinop Üniversitesi, Türkiye
Dr. Öğr. Üyesi Uğur ÖZSANDIKÇI Sinop Üniversitesi, Türkiye
Ferhat Büyükdeveci
Sinop Üniversitesi, Türkiye
Sinop Üniversitesi, Türkiye
Yakup Erdem
Sinop Üniversitesi, Türkiye
Sinop Üniversitesi, Türkiye
| Makale Türü | Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale) | ||
| Dergi Adı | Acta Zoologica Bulgarica (Q4) | ||
| Dergi ISSN | 0324-0770 Dergi Bilgileri (2021) | ||
| Dergi Tarandığı Indeksler | SCI-Expanded | ||
| Makale Dili | İngilizce | Basım Tarihi | 09-2021 |
| Cilt / Sayı / Sayfa | 73 / 3 / 417–423 | DOI | – |
| UAK Araştırma Alanları |
Avlama Teknolojileri
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| Özet |
| Data 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= 0.0029 L3. 1675 (R= 0.9533, N= 323) for summer, W= 0.003 L3. 1505 (R= 0.9955, N= 20) for autumn, W= 0.003 L3. 1612 (R= 0.9967, N= 16) for winter and W= 0.0022 L3. 2412 (R= 0.9866, N= 71) for spring. |
| Anahtar Kelimeler |
| Black Sea | Length-weight relationship | Raja clavata | Rajiformes |
