Population structure, growth, mortality and yield per recruit of segestid shrimp, Acetes japonicus (Decapoda: Sergestidae) from the coastal waters of Malacca, Peninsular Malaysia

Nurul Amin, Sanker Mohammad and Arshad, Aziz and Siraj, Siti Shapor and Bujang, Japar Sidik (2009) Population structure, growth, mortality and yield per recruit of segestid shrimp, Acetes japonicus (Decapoda: Sergestidae) from the coastal waters of Malacca, Peninsular Malaysia. Indian Journal of Marine Sciences, 38 (1). pp. 57-68. ISSN 0379-5136

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Official URL: http://nopr.niscair.res.in/handle/123456789/4245

Abstract

Present study consists the population structure, growth, mortality and relative yield recruit of A. japonicus from the coastal waters of Malacca, Peninsular Malaysia. FISAT software has been used to examine the monthly data. The asymptotic length (La) and growth co-efficient (K) was estimated as 29.08 mm and 1.4 y-1. The growth performance index (φ) was calculated as 3.073. The exponent (b) of the length-weight relationship was found to be 3.063 (± 0.015). The asymptotic weight was calculated as 187.72 mg. Total mortality coefficient (Z) was estimated at 5.16 yr-1. The natural mortality (M) and fishing mortality (F) was calculated as 2.35 yr-1 and 2.81 yr-1, respectively. Exploitation rate (E) of A. japonicus was estimated as 0.54. The recruitment pattern was continuous throughout the year with one major peak. The relative yield per recruit analysis predicted the maximum exploitation rate (Emax) = 0.52. The current exploitation rate E is slightly higher than predicted Emax. The stock of A. japonicus was found to be over exploited in the investigated area.

Item Type:Article
Keyword:Population dynamics, Acetes Japonicus, Malaysia
Faculty or Institute:Faculty of Agriculture
ID Code:4702
Deposited By: Norhazura Hamzah
Deposited On:25 Mar 2010 09:42
Last Modified:20 Jul 2010 08:22

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