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Population dynamics of Randall’s threadfin bream <i>Nemipterus randalli </i> from Pakistani waters, Northern Arabian Sea

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Title Population dynamics of Randall’s threadfin bream Nemipterus randalli from Pakistani waters, Northern Arabian Sea
 
Creator Kalhoro, Muhsan Ali
Tang, DanLing
Ye, HaiJun
Morozov, Evgeny
Liu, Qun
Memon, Khadim Hussain
Kalhoro, Muhammad Talib
 
Subject Arabian Sea
Nemipterus randalli
Fish stock assessment
Growth
Mortality
 
Description 551-561
The N. randalli fish data consist of 1141 pair of length weight relationship and 24312 length frequencies were measured during 2009 - 2010 survey. The maximum length and weight were 25 cm and 251 g, respectively. The length-weight relationship were a = 0.035, b = 2.744 and R2 = 0.972. The asymptotic length (L∞) and growth coefficient (K) were estimated to 26.25 cm and 0.320 year-1, respectively. The total mortality (Z) was 1.25 year-1. The natural mortality (M) was 0.863, hence the fishing mortality (F) was Z–M = 0.387 year-1 for N. randalli. The yield per recruit analysis indicated that when tc was assumed to be 2, Fmax was estimated at 1.3 and F0.1 at 1.3; while tc was assumed to be 1, Fmax was estimated at 1.1 and F0.1 at 0.95. Currently age at first capture is about 1 year and Fcurrent was 0.387, therefore, Fcurrent was smaller than F0.1 and Fmax. The results during present study indicate that current fishery stock is in sustainable state. However, it is suggested that take some management steps to maintain the stock of N. randalli in Pakistani waters, Northern Arabian Sea.
 
Date 2017-03-17T06:22:39Z
2017-03-17T06:22:39Z
2017-03
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://nopr.niscair.res.in/handle/123456789/40805
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.46(03) [March 2017]