Biology and population dynamics of Nemipterus mesoprion (Bleeker) off Cochin


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Authors

  • K K Joshi Central Marine Fisheries Research Institute, Cochin- 682 018

Abstract

Biology and population dynamics of Nemipterus mesoprion from the trawling grounds off Cochin were studied. The length weight relationship is Log W=-4.700+2.926 Log L. The major food items were fishes, crustaceans and squids. The estimated length at first maturity was 106mm and the spawning season extends from May to November. The estimated von Bertalanffy parameters were L∠=274.5mm, K= 0.85year-1 and to= -0.01 year. The total mortality, fishing mortality and natural mortality were 3.12, 1.856 and 1.26 respectively. Maximum yield could be 694t at 120% of the present effort but yield increase will be 101% of present. The cod end mesh size has to be doubled to get maximum yield.

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Author Biography

  • K K Joshi, Central Marine Fisheries Research Institute, Cochin- 682 018
    Central Marine Fisheries Research Institute, Cochin- 682 018

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Issue

Vol. 52 No. 3 (2005)

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

Joshi, K. K. (2011). Biology and population dynamics of Nemipterus mesoprion (Bleeker) off Cochin. Indian Journal of Fisheries, 52(3), 315-322. https://epubs.icar.org.in/index.php/IJF/article/view/7049