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Population dynamics of sciaenid Johnius macrorhynus (Pisces/Perciformes/ Sciaenidae) from Bombay waters

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Title Population dynamics of sciaenid Johnius macrorhynus (Pisces/Perciformes/ Sciaenidae) from Bombay waters
 
Creator Chakraborty, Sushant Kumar
 
Description 86-89
von Bertalanffy's growth equation was used to describe growth of Johnius macrorhynus (Mohan). The values estimated were L(infinity) = 331 mm, K = 0.5415 (annual) and t0 = -0.07876 y and W(infinity) = 323 g. This species reached 143, 224 and 270 mm at the end of I, II and III years of its life respectively. The average total, natural and fishing mortality coefficients were 2.87, 1.18 and 1.69 respectively. Exploitation rate and ratio were 0.555 and 0.588 respectively. Yield per recruit study showed that at the present level of age of capture (t(c)) of 0.9261 years and fishing mortality (F) 1.69 the Y(w)/R is 17.71 g. Average total and standing stocks were estimated as 2286.50 and 750.89 ton respectively as compared to the present average yield of 1269.01 ton.
 
Date 2016-11-25T04:42:01Z
2016-11-25T04:42:01Z
1994-06
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://nopr.niscair.res.in/handle/123456789/37545
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.23(2) [June 1994]