STUDY ON THE BIOLOGY OF JOHNIEOPS VOGLERl (SLEEKER) OF BOMBAY WATERS


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Authors

  • C Muthiah Mangalore R. C. of Central Marine Fisheries Research Institute, Mangalore.

Abstract

Johnieops vogleri in Bombay waters attains an average size of 158 mm, 240
mm and 290 mm at the end of 1, 2 and 3 years as shown by the length-frequency
method, and 164.4, 220.6 and 276.6 mm as indicated by the scales. The time of
annulus formation in the scales was during May to September which coincides
with low intensity of feeding, spawning activities of the fish and the prevailing
monsoon. Juveniles prefer crustaceans and, as they grow, show the piscivorous
tendency. Lower intensity of feeding is noticed during the spawning season. Fifty
percent of the fish mature at 159 mm in length. The relative condition of the fish
is correlated to the spawning activities. Fecundity varied from 26,028 to 581,298
eggs. The distribution of sexes observed during different months of the year is
not significant except during October and November. Among 130-179 mm size
groups, males preponderated, whereas females were more among 220-249 mm
size groups.

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Author Biography

  • C Muthiah, Mangalore R. C. of Central Marine Fisheries Research Institute, Mangalore.
    Mangalore R. C. of Central Marine Fisheries Research Institute, Mangalore.

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Issue

Vol. 29 No. 1 & 2 (1982)

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

Muthiah, C. (2011). STUDY ON THE BIOLOGY OF JOHNIEOPS VOGLERl (SLEEKER) OF BOMBAY WATERS. Indian Journal of Fisheries, 29(1 & 2), 118-133. https://epubs.icar.org.in/index.php/IJF/article/view/11893