MATURITY AND SPAWNING OF IOHNIUS (JOHNIEOPS) SINA (CUVIER) AT CALICUT DURING 1969-72


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Authors

  • K V Somasekharan Nair Calicut Research Centre of Central Marine Fisheries Research Institute, Calicut-5.

Abstract

The percentage occurrence of mruture fish and ova-diam<:ter 'frequency in
lohnius (IQhnieops) sina (Cuvier). indicated pmlonged spawning of the species.
The minimum size at first maturity has been fqund to be at an average size of
115 mm for females. The condition factor had the minimum value at a length of
115 mm for females and 125 mm fur· males, when they are considered to be
mature for the first time. Sexes appeared in equal proportion in most of the
months. Dominance of females in the population was noticed at 115mm total
length and upwards. Fecundity has been found to vary from 12,774 to 1,51,697
in specimens of the size range 124-174 mm.

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Author Biography

  • K V Somasekharan Nair, Calicut Research Centre of Central Marine Fisheries Research Institute, Calicut-5.
    Calicut Research Centre of Central Marine Fisheries Research Institute,
    Calicut-5.

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Issue

Vol. 24 No. 1 & 2 (1977)

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

Nair, K. V. S. (2011). MATURITY AND SPAWNING OF IOHNIUS (JOHNIEOPS) SINA (CUVIER) AT CALICUT DURING 1969-72. Indian Journal of Fisheries, 24(1 & 2), 15-24. https://epubs.icar.org.in/index.php/IJF/article/view/12122