Fishery and dynamics of the fiddler shrimp, Metapenaeopsis stridulans (Alcock, 1905) from Chennai coast

Pillai, S Lakshmi and Kizhakudan, Joe K and Thirumilu, P (2012) Fishery and dynamics of the fiddler shrimp, Metapenaeopsis stridulans (Alcock, 1905) from Chennai coast. Journal of Marine Biological Association of India, 54 (2). pp. 90-93.

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    Abstract

    Annually 161 t of Metapenaeopsis stridulans was landed on an average in the Kasimedu fishing harbour (Chennai) during the period 2003-2007. The peak season of fishery was June- September and the overall sex ratio was 1:1.2. Females were slightly larger than males, the mean size was 79.8 mm against 73.8 mm for males. The length range for females was 41-125 mm and for males 41-115 mm. L∞ was estimated at 125 mm for females and 114 mm for males; the growth constant K was 1.1 yr-1 for females and 1.3 yr-1 for males. The mortality rates were: Z = 3.80, M = 1.20 and F = 2.60 for females and Z = 3.73, M = 1.52 and F = 2.21 for males. The length at first capture (L50) was 63.82 mm for the species. Beverton and Holt’s relative yield-per-recruit (Y’/R) analysis revealed that the current exploitation rate is higher than the optimum exploitation rate (E 0.5), hence fishing mortality should be reduced by about 45% to sustain the stock.

    Item Type: Article
    Uncontrolled Keywords: Fiddler shrimp; Metapenaeopsis stridulans; maturity; growth parameters; mortality; exploitation rate
    Subjects: Crustacean Fisheries
    Divisions: CMFRI-Kochi > Marine Capture > Crustacean Fisheries
    Subject Area > CMFRI > CMFRI-Kochi > Marine Capture > Crustacean Fisheries
    CMFRI-Kochi > Marine Capture > Crustacean Fisheries
    Subject Area > CMFRI-Kochi > Marine Capture > Crustacean Fisheries
    Depositing User: Arun Surendran
    Date Deposited: 16 Jul 2013 10:30
    Last Modified: 09 Sep 2015 15:54
    URI: http://eprints.cmfri.org.in/id/eprint/9296

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