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Growth, mortality and stock assessment of two perches moontail bull's eye Priacanthus hamrur (Perciformes/Pricanthidae) and thornycheek grouper Epinephelus diacanthus (Perciformes/Serranidae) from Bombay waters

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Title Growth, mortality and stock assessment of two perches moontail bull's eye Priacanthus hamrur (Perciformes/Pricanthidae) and thornycheek grouper Epinephelus diacanthus (Perciformes/Serranidae) from Bombay waters
 
Creator Chakraborty, Sushant Kumar
Vidyasagar, Kuber D
 
Description 312-315
Based on the data collected from 1989-92 the growth, mortality and stock assessment of P. hamrur and E. diacanthus were calculated. The von Bertalanffy's growth functions worked out for P. hamrur were as follows L-infinity=360 mm, K=0.64 per year and that off. diacanthus were L-infinity=494 mm and K=0.59 per year. Based on these calculations the growth of P. hamrur at the end of I-IV years works out to be as 171, 260, 308 and 334 mm. The length attained by E. diacanthus at the end of I-IV years of its life works out to 223, 345, 414 and 451 mm respectively. The mortality coefficients - Z, M and F were worked out 2.24, 1.13 and 1.11 for P. hamrur. The same for E. diacanthus was calculated as 1.74, 1.1 and 0.64 respectively. Stock assessment study shows that there is no decline in the catch at the present rate of exploitation. However, even if the efforts are trebled, the increase in the catch will not be proportionate and returns are not remunerative.
 
Date 2016-11-18T09:55:43Z
2016-11-18T09:55:43Z
1996-12
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://nopr.niscair.res.in/handle/123456789/37142
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.25(4) [December 1996]