Length–Weight Relationships of Elasmobranch Species From Gökçeada Island in the Northern Aegean Sea


Cabbar K., Yığın C. Ç.

Thalassas, vol.1, no.1, pp.1-8, 2021 (Journal Indexed in SCI Expanded)

  • Publication Type: Article / Article
  • Volume: 1 Issue: 1
  • Publication Date: 2021
  • Doi Number: 10.1007/s41208-021-00350-z
  • Title of Journal : Thalassas
  • Page Numbers: pp.1-8

Abstract

Lenght – weight relationships (LWRs) were estimated for eight elasmobranchs (five sharks and three batoids) off the Gökçeada Island, Northern Aegean Sea. All specimens were collected by commercial bottom trawl at depths ranging from 120–400 m between February and November 2019. A total of 2991 individuals (1143 Scyliorhinus canicula, 110 Scyliorhinus stellaris, 795 Galeus melastomus, 575 Etmopterus spinax, 48 Squalus acanthias, 255 Raja clavata, 29 Raja miraletus, 36 Dipturus oxyrinchus) were sampled and studied. Results showed that most species had positive allometric growth and the values of parameter b ranged between 2.93 and 4.01. Furthermore, five shark (Mustelus asteriasMustelus mustelusCentrophorus granulosusHexanchus griseusOxynotus centrina) and eight batoid species (Dasyatis pastinacaGymnura altavelaPteromylaeus bovinusLeucoraja naevusRostroraja albaMyliobatis aquilaTorpedo marmorataTetronarce nobiliana) were described, yet because they amounted to less than ten, only their respective descriptive statistics were determined.