REPRODUCTIVE BIOLOGY OF OTOLITHES CUVIERI (TREWAVAS, 1974) FROM MUMBAI WATERS
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Authors
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Prashant A. Telvekar
Central Institute of Fisheries Education, Seven Bungalows, Fisheries University Road,
Mumbai - 400061, India.
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S. K. Chakraborty
Central Institute of Fisheries Education, Seven Bungalows, Fisheries University Road,
Mumbai - 400061, India.
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A. K. Jaiswar
Central Institute of Fisheries Education, Seven Bungalows, Fisheries University Road,
Mumbai - 400061, India.
Abstract
The reproductive biology of Otolithes cuvieri (Trewavas, 1974) is reported
in the present communication. The size at first maturity for the females was
estimated to be 275 mm. The spawning activity was observed throughout the
year with two peaks occurring in April and June. Two prominent peaks of
gonado-somatic index (April and June) also support the view of two major
spawning. Relative fecundity ranged from 71,574 to 79,680 eggs per 100 g of
body weight. Relationship of fecundity with fish length, fish weight and ovary
weight of the species has been established as F = -132971 + 1447.441 x L, F =
124195 + 468.798 x Wand F = 250517.5 + 3369.029 x OW, respectively. Study
of sex ratio by random sampling of the catches indicated the dominance of
females in commercial catches of Mumbai coast.
Keywords: Otolithes cuvieri, gonado-somatic index, ova diameter
