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Population dynamics of big-eye croaker Pennahia macrophthalmus and blotched croaker Nibea maculata (Pisces Perciformes Sciaenidae) in the trawling grounds off Rameswaram island, east coast of India

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Title Population dynamics of big-eye croaker Pennahia macrophthalmus and blotched croaker Nibea maculata (Pisces Perciformes Sciaenidae) in the trawling grounds off Rameswaram island, east coast of India
 
Creator Jayasankar, P
 
Description 153-157
Growth parameters of P. macrophthalmus and N. maculata were estimated. Estimated lengths on completion of I, II and III years were 173, 216 and 228 mm for P. macrophthalmus and 193, 253 and 273 mm for N. maculata. Total mortality rates (Z) ranged from 2.7 to 5.8 and from 3.35 to 5.91, while natural mortality (M) ranged from 1.84 to 2.38 and from 1.66 to 2.70, respectively for P. macrophthalmus and N. maculata. Length and age at first capture were 97 mm, 0.35 y and 124 mm, 0.48 y for the two species, which were less than the corresponding parameters at first maturity in both of them. Highest yield could be obtained when age at first capture was 0.45 in P. macrophthalmus and 0.60 in N. maculata.
 
Date 2016-11-23T06:17:22Z
2016-11-23T06:17:22Z
1995-09
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://nopr.niscair.res.in/handle/123456789/37320
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.24(3) [September 1995]