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Breeding Biology of Carangid Fishes <i>Carangoides malabaricus</i> (Bloch and Schn.) and <i>Alepes kalla</i> (Cuv. and Val.) along Porto Novo Coast

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Title Breeding Biology of Carangid Fishes Carangoides malabaricus (Bloch and Schn.) and Alepes kalla (Cuv. and Val.) along Porto Novo Coast
 
Creator Venkataramani, V K
Natarajan, R
 
Description 14-18
Studies on ova diameter frequency, seasonal occurrence of maturity stages, gonado somatic indices and relative condition factor(Kn) revealed that C. malabaricus and A. kalla were prolonged breeders. Individuals of C. malabaricus and A. kalla spawned once in a year as evidenced by a single distinct mature mode, completely separated from the immature stock. The spawning period for C. malabaricus was from February to October with a peak from July to September. The spawning period for A. kalla was from January to September with 2 peaks, one in February and the other from June to August as indicated by the occurrence of high percentage of mature specimens, rise in gonado somatic indices and a rise in relative condition factor values. Size at first maturity in C. malabaricus was 161 mm (TL) for both sexes, while in A. kalla it was 128.5 mm for males and 126.5 mm for females. Fecundity studies in both the species showed direct and significant correlations with total length and body weight. Sex ratio conformed to the expected 1:1 ratio in almost all the months of the year (based on chisquare values) for C. malabaricus while in A. kalla the expected 1:1 ratio could be recorded only during 7 months of the year, but in the remaining 5 months, deviation from the expected 1:1 ratio was significant.
 
Date 2016-12-15T09:22:12Z
2016-12-15T09:22:12Z
1984-03
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://nopr.niscair.res.in/handle/123456789/38714
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.13(1) [March 1984]