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Biological observations on the bristly catshark Bythaelurus hispidus from deep waters off the south-west coast of India

journal contribution
posted on 2023-05-19, 08:51 authored by Akhilesh, KV, White, WT, Bineesh, KK, Ganga, U, Pillai, NGK
Biological data are presented for the poorly known bristly catshark Bythaelurus hispidus based on specimens collected from the by-catch of the commercial deep-sea shrimp trawl fishery operating in the Arabian Sea at depths of 200–500 m off the south-west coast of India. One hundred and sixty-two individuals, which ranged from 120 to 366 mm total length (LT), were collected for this study. Size-at-maturity (L50) for females and males was estimated at 252 and 235 mm LT, respectively. The reproductive mode of B. hispidus was aplacental viviparity, which is the rarest reproductive mode within the Scyliorhinidae and is considered to be the most advanced of the three reproductive modes occurring within this family. Dietary analysis of stomach contents revealed B. hispidus feeds on a variety of prey, primarily fishes.

History

Publication title

Journal of Fish Biology

Volume

82

Issue

5

Pagination

1582-1591

ISSN

0022-1112

Department/School

Institute for Marine and Antarctic Studies

Publisher

Blackwell Publishing Ltd

Place of publication

9600 Garsington Rd, Oxford, England, Oxon, Ox4 2Dg

Rights statement

Copyright 2013 The Authors

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in the biological sciences

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