Observations on the biology of Nemipterus japonicus (Bloch) from Veraval


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Authors

  • S G Raje Bombay Research Centre of Central Marine Fisheries Research Institute, Bombay - 400 001, India.

Abstract

The length-weight relationship for Nemipterus japonicus was not significantly
different between sexes, hence the common regression equation for the species
was calculated as log W = 4.88606 + 3.00437 log L. The Kn values were calculated
separately for males and females in relation to various months. Females
attain 50% maturity at 155 mm. Intraovarian investigations indicated that the
spawning period of this species extends from September to April, with a peak
during September-November. The fecundity ranged from 10,260 to 184,960 and
increased with the increase in the length and weight of fish. Sex ratio showed
preponderence of males, with a male to female ratio of 2.2:1. In general, feeding
intensity appeared to increase from September to May. This species is a carnivore,
feeding mainly on crustaceans, teleosts, annelids, molluscs and echinoderms.

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Author Biography

  • S G Raje, Bombay Research Centre of Central Marine Fisheries Research Institute, Bombay - 400 001, India.
    Bombay Research Centre of Central Marine Fisheries Research Institute, Bombay -
    400 001, India.

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Issue

Vol. 49 No. 4 (2002)

Section

Articles

License

The copyright of the articles published in Indian Journal of Fisheries vests with the Indian Council of Agricultural Research, who has the right to enter into any agreement with any organization in India or abroad engaged in reprography, photocopying, storage and dissemination of information contained in these journals. The Council has no objection in using the material, provided the information is being utilized for academic purpose but not for commercial use. Due credit line should be given to the ICAR where information will be utilized.

How to Cite

Raje, S. G. (2011). Observations on the biology of Nemipterus japonicus (Bloch) from Veraval. Indian Journal of Fisheries, 49(4), 433-440. https://epubs.icar.org.in/index.php/IJF/article/view/8216