Myctophid fishery along the Kerala coast with emphasis on population characteristics and biology of the headlight fish, Diaphus watasei Jordan & Starks, 1904

Sebastine, Manju and Bineesh, K K and Abdussamad, E M and Pillai, N G K (2013) Myctophid fishery along the Kerala coast with emphasis on population characteristics and biology of the headlight fish, Diaphus watasei Jordan & Starks, 1904. Indian Journal of Fisheries, 60 (4). pp. 7-11.

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    Abstract

    Myctophids form bycatch in deep sea shrimp trawls with an annual average catch of 2668 t during 2009 - 2011 in Kerala coast. Fishery occurred almost round the year with peak during November - February. Fishery and biology of the dominant species, Diaphus watasei was monitored. Peak spawning and recruitment of the species was during January-August. Growth parameters L∞ and K are estimated as 15.06 cm and 0.8 per year respectively. These values indicate that the species growth is relatively fast. Natural mortality estimate (M) is 1.21, total mortality (Z) 1.68 and fishing mortality (F) 0.47. The exploitation rate (E) is low being 0.279. These indicate that the stock is at its initial stage of exploitation and there is large scope for enhancing their commercial exploitation. The stock abundance, biomass and distribution of the resource need to be assessed. These factors have to be taken into consideration while planning for exploitation of myctophids in future.

    Item Type: Article
    Uncontrolled Keywords: Exploitation rate; Diaphus watasei; Growth; Mortality; Myctophids
    Subjects: Demersal Fisheries
    Divisions: CMFRI-Kochi > Marine Capture > Demersal Fisheries
    Subject Area > CMFRI > CMFRI-Kochi > Marine Capture > Demersal Fisheries
    CMFRI-Kochi > Marine Capture > Demersal Fisheries
    Subject Area > CMFRI-Kochi > Marine Capture > Demersal Fisheries
    Depositing User: Arun Surendran
    Date Deposited: 03 Feb 2014 11:13
    Last Modified: 09 Sep 2015 15:57
    URI: http://eprints.cmfri.org.in/id/eprint/9809

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