ESTIMATION OF MORTALITY RATES OF THE OIL SARDINE, SARDINELLA LONGICEPS VAL.


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Authors

  • G G Annigeri Central Marine Fisheries Research Institute; Sub-station, Karwar

Abstract

The mortality rates of oil sardine, Sardinella longiceps from Karwar have been
estimated based on the age composition of the fishery by adopting the method of Beverton
and Holt. The values obtained are 2.43, 1.57, 3.70 and 2.96 for instantaneous total
mortality and 0.98, 0.12, 2.25 and 1.51 for the fishing mortality durig 1965-66,1966-67,
1967-68 and 1968-69 seasons respectively. The natural mortality obtained in the final
iteration process is 1.45. The estimation shows considerable changes from year to year '
inthe values of both total and fishing mortalities due to short-term changes in abundance
offish.

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Author Biography

  • G G Annigeri, Central Marine Fisheries Research Institute; Sub-station, Karwar
    Central Marine Fisheries Research Institute; Sub-station, Karwar

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Issue

Vol. 18 No. 1 & 2 (1971)

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

Annigeri, G. G. (2011). ESTIMATION OF MORTALITY RATES OF THE OIL SARDINE, SARDINELLA LONGICEPS VAL. Indian Journal of Fisheries, 18(1 & 2), 109-113. https://epubs.icar.org.in/index.php/IJF/article/view/13167