POPULATION DYNAMICS OF NEMIPTERUS JAPONICUS (BLOCK) IN THE TRAWLING GROUNDS OFF MADRAS


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Authors

  • E Vivekanandan Madras Research Centre of C.M.F.R. Institute, Madras 600105.
  • D B James Madras Research Centre of C.M.F.R. Institute, Madras 600105.

Abstract

Nemipterus japonicus matures at 145 mm total length and has an extended
spawning season from June to March with maximum spawning activity in December-
March. The length-weight relationship of fish can be expressed as: log W =
—4.8665 + 2.9661 log L. The von Bertalanfly parameters of growth are estimated
thus: K = 1.004; t„ = 0.2257; Leo = 305 mm. The natural mortality and fishing
mortality rates are estimated at 2.5254 and 0.4599, respectively. Both the annual
stock (2300 t) and the standing crop (731 t) are higher than the estimated annual
catch (336 t), indicating that the present fishing effort can safely be increased
without the stock being affected

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Author Biographies

  • E Vivekanandan, Madras Research Centre of C.M.F.R. Institute, Madras 600105.
    Madras Research Centre of C.M.F.R. Institute, Madras 600105.
  • D B James, Madras Research Centre of C.M.F.R. Institute, Madras 600105.
    Madras Research Centre of C.M.F.R. Institute, Madras 600105.

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Issue

Vol. 33 No. 2 (1986)

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

Vivekanandan, E., & James, D. B. (2011). POPULATION DYNAMICS OF NEMIPTERUS JAPONICUS (BLOCK) IN THE TRAWLING GROUNDS OFF MADRAS. Indian Journal of Fisheries, 33(2), 145-154. https://epubs.icar.org.in/index.php/IJF/article/view/10890