Discarded Elasmobranchs in shrimp trammel net fishery in southern Turkey (Northeastern Mediterranean Sea)


KEBAPÇIOĞLU T.

CAHIERS DE BIOLOGIE MARINE, vol.62, no.2, pp.187-194, 2021 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 62 Issue: 2
  • Publication Date: 2021
  • Doi Number: 10.21411/cbm.a.7f9d1bdb
  • Journal Name: CAHIERS DE BIOLOGIE MARINE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, PASCAL, Aquatic Science & Fisheries Abstracts (ASFA), BIOSIS, CAB Abstracts, Veterinary Science Database
  • Page Numbers: pp.187-194
  • Keywords: Elasmobranch species, discards, trammel net, Gulf of Antalya, Northeastern Mediterranean, STINGRAY DASYATIS-PASTINACA, ISKENDERUN BAY, RAJA-UNDULATA, BYCATCH, COAST, RAY, CONSERVATION, ABUNDANCE, ANTALYA, GROWTH
  • Akdeniz University Affiliated: Yes

Abstract

The purpose of this study is to examine discards in fishery, which is a significant problem in the world's marine fisheries. The study focuses primarily on elasmobranch discards in shrimp trammel net fishery. Ninety-six samplings were performed at depths ranging between 10 and 23 m off the southern coast of Turkey (Northeastern Mediterranean Sea). A total of 172 specimens, belonging to 11 elasmobranch species, were caught. Seven species were classified as threatened in the Mediterranean based on the International Union for Conservation of Nature (IUCN) criteria. The catch per unit effort (CPUE) of total elasmobranchs was 1.303 specimens.1000 m(-1) net. The dominant species was Raja undulata Lacepede, 1802 with 0.258 individuals.1000 m(-1) net, followed by Dasyatis pastinaca (Linnaeus, 1758), Raja miraletus Linnaeus, 1758, and Torpedo marmorata Risso, 1810. The average disk widths of these species were 25.0, 24.8, 19.0 and 15.5 cm, respectively. It is of utmost importance to obtain continuous and reliable data for sustainable fisheries management and protection of threatened species.