Relationships between Opercular Girth, Maximum Girth, and Total Length of Six Sparid Fishes from Saros Bay (Northern Aegean Sea, Turkey): An Assessment for Ecosystem-based Fisheries Management

Cengiz .

PHILIPPINE AGRICULTURAL SCIENTIST, vol.105, no.3, pp.247-254, 2022 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 105 Issue: 3
  • Publication Date: 2022
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aquatic Science & Fisheries Abstracts (ASFA)
  • Page Numbers: pp.247-254
  • Keywords: fish morphology, sparidae, Saros Bay, Aegean Sea, Turkey, GILLNET SELECTIVITY, MESH SELECTIVITY, ABU HECKEL, CAUGHT, IZMIR, RIVER, SHAPE
  • Van Yüzüncü Yıl University Affiliated: Yes


This study was conducted so as to unearth the relationships between opercular girth (Gope), maximum girth (Gmax), and total length (TL) for six sparid fishes (Boops boops, Diplodus annularis, Diplodus puntazzo, Diplodus vulgaris, Lithognathus mormyrus, Oblada melanura) belonging to family Sparidae sampled between April 2015 and July 2016 in Saros Bay (Northern Aegean Sea, Turkey). Gope and Gmax were found to increase linearly with total length for all the species. All r(2) values were statistically significant (> 0.82, P < 0.001). This study reports the first information about length-girth relationships (LGRs) of Diplodus puntazzo for the Aegean sea. However, no LGRs estimates existed for Oblada melanura worldwide. These values are important for the selectivity of fishing gear so as to prevent the capture of younger, undersized, and immature individuals, it will assist the development of the ecosystem-based fisheries management.