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Age and growth of the fishes of the genus Chirocentrus Cuvier

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Relation http://eprints.cmfri.org.in/1214/
 
Title Age and growth of the fishes of the genus Chirocentrus Cuvier
 
Creator Luther, G
 
Subject Fish biology
Clupeidae
 
Description Sexual difference in the rate of linear growth, female growing faster than male, was observed
in the fishes of the genus CMrocentrus, namely, C. nudus and C. dorab. These two species form a
fishery around the Rameswaram Island. The following results relate to C. nudus which has been
studied in some detail. A close agreement has been found between the average lengths of fish calculated
by length frequency method and by back-calculation of the lengths to the successive hyaline
zones in the otoliths. The respective lengths to caudal fork (LCF) in cm at completion of 1-13 years
of age, as derived from the von Bertalanflfy growth equation, those of male being given in parenthesis
are : 16.0 (17.5), 26.5 (25.0), 35.5 (31.5), 44.0 (37.0). 51.0 (41.5), 57.0 (46.0), 62.0 (50.0), 66.5 (53.5),
70.5 (56.5), 74.0 (59.5), 77.0 (62.0), 79.5 (64.5) and 82.0 (66.0). Fish of 4-6 years of age, which are
well past the size at first maturity in both sexes, form bulk of the catches in the drift net fishery around
the Island. Consistent and significant difference in the size at first maturity between sexes as well as
in the sex ratios in the broad length groups, or between juveniles and adults have been found to serve
as a good indication for the existence of sexual difference in the rate of linear growth.
 
Publisher MBAI
 
Date 1985
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/1214/1/Luth__50-67.pdf
Luther, G (1985) Age and growth of the fishes of the genus Chirocentrus Cuvier. Journal of the Marine Biological Association of India, 27 (1&2). pp. 50-67.