Demographics of a heavily exploited deep water shark Echinorhinus cf. brucus (Bonnaterre, 1788) from the south-eastern Arabian Sea

Akhilesh, K V and Chellappan, Anulekshmi and Bineesh, K K and Ganga, U and Pillai, N G K (2020) Demographics of a heavily exploited deep water shark Echinorhinus cf. brucus (Bonnaterre, 1788) from the south-eastern Arabian Sea. Indian Journal of Fisheries, 67 (1). pp. 8-15.

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    Abstract

    In the absence of direct consumption importance and considering as low value bycatch, many vulnerable non-target species, especially slow growing deep water fauna, are overlooked in tropical fisheries research and management. The bramble shark Echinorhinus cf. brucus (Bonnaterre, 1788) is one such species, subjected to a significant non-targeted deepwater fishery off southern India. A length frequency based stock assessment of bramble shark caught in trawl fisheries from the south-eastern Arabian Sea suggests that, E. cf. brucus is a moderately slow growing (K=0.12 year-1) and moderately long lived shark species (Tmax = 25 years, L∞= 333 at corresponding age of 55 years) which is overexploited (M=0.17, Z=0.39) in the region. In view of resilience capacity and vulnerability of deep sea fisheries, improved research and monitoring programmes are urgently required to ensure a sustainable future for India’s expanding deep sea and distant water fisheries.

    Item Type: Article
    Uncontrolled Keywords: Bycatch, Deep sea, Indian Ocean, India, Population dynamics, Shark fishery, Sustainability
    Subjects: Fish and Fisheries > Fisheries management
    Demersal Fishes > Bombay Duck
    Marine Fisheries
    Pelagic Fisheries
    Divisions: CMFRI-Mumbai
    CMFRI-Kochi > Marine Capture > Pelagic Fisheries
    Subject Area > CMFRI > CMFRI-Kochi > Marine Capture > Pelagic Fisheries
    CMFRI-Kochi > Marine Capture > Pelagic Fisheries
    Subject Area > CMFRI-Kochi > Marine Capture > Pelagic Fisheries
    Depositing User: Arun Surendran
    Date Deposited: 22 Apr 2020 08:44
    Last Modified: 22 Apr 2020 08:49
    URI: http://eprints.cmfri.org.in/id/eprint/14171

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