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Fishery and stock assessment of <i style="mso-bidi-font-style: normal">Metapenaeus dobsoni</i> (Miers, 1878) off Chennai

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Title Fishery and stock assessment of Metapenaeus dobsoni (Miers, 1878) off Chennai
 
Creator Pillai, S. Lakshmi
Thirumilu, P.
 
Subject Metapenaeus
Mortality
Maximum Sustainable Yield
Chennai
 
Description 448-452
Fishery, growth, mortality and maximum
sustainable yield of Metapenaeus dobsoni
(Miers) off Chennai during 2004-07 is presented in the article. Metapenaeus dobsoni contributed 16.5%
to the total penaeid shrimps landed during 2004-2007 at Chennai Fisheries
Harbour. Total length
range was 36-130 mm for females and 41-120 mm for males, overall sex ratio
being 1:1.5 (M:F). Size at 50% maturity (69 mm) was attained in five months.
Longevity was estimated to be 1.8 months. Length weight relationship for
females and males pooled was 0.0000062L3.02. Growth parameters
estimated for sex pooled data are 131 mm (L∞) and 1.68 (K, annual). Linearised
catch curve gave total mortality coefficient (Z) of 7.93. Fishing (F) and
natural mortality (M) are 5.86 and 1.79 respectively with exploitation ratio
(E) of 0.74. Thomson and Bell
yield prediction analysis showed that the present fishing has reached the
maximum sustainable yield, but the maximum sustainable economic yield is
attained at the F-factor 0.6. Hence it is suggested to decrease the present
fishing effort by 40% to sustain the fishery and get maximum revenue.
 
Date 2013-09-02T12:15:06Z
2013-09-02T12:15:06Z
2013-08
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/20902
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.42(4) [August 2013]