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Title: <smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="country-region"><smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="place"> Growth and mortality of Indian squid, <i>Loligo duvauceli</i> (d’Orbigny) (Mollusca/Cephalopoda/Teuthoidea) from Mumbai waters, India </smarttagtype></smarttagtype>
Authors: Karnik, Nirmala S.
Chakraborty, S. K.
Jaiswar, A.K.
Swamy, R.P.
Rajaprasad, R.
Boomireddy, S.
Rizvi, A. F.
Keywords: Asymptotic length
Indian squid
Issue Date: Mar-2003
Publisher: CSIR
Abstract: The growth, mortality and exploitation ratio of <i>Loligo duvauceli</i> estimated by employing FiSAT Programme are reported. The asymptotic length (L ∞) and growth coefficient (K) were estimated as 385 mm and 0.85 y<sup> –1 </sup>respectively. The total, natural and fishing mortality co-efficients were calculated as 4.29, 1.82<sup> </sup>and 2.47 per year<sup> </sup>respectively. The present exploitation ratio is around 0.57. Relative yield per recruit analysis shows that the E<sub>max</sub> is 0.49. Yield isopleth diagram reveals that yield per recruit can be maximized at the exploitation ratio of 0.5 and Lc/L ∞ values of 0.4. Reduction in fishing effort is required to maximize the yield per recruit of <i>Loligo duvauceli</i> in Mumbai waters. Increase in cod end mesh size of trawls and reduction in the present level of effort are suggested to sustain the fishery of <i>Loligo duvauceli</i> in Mumbai waters.
Description: 67-70
ISSN: 0379-5136
Appears in Collections:IJMS Vol.32(1) [March 2003]

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