MATURITY AND SPAWNING IN OTOLITHUS RUBER (SCHN.) AND JOHNlOS DUSSUMIERl(C. & V.)


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Authors

  • P Devadoss Central Marine Fisheries Research Institute; Sub-station, Bombay

Abstract

From the ova diameter measurements, it has been observed that O. ruber spawns
only once a year during July to October, and /. dussumieri spawns twice a year, first
between January and February and again between June and September. Indication of
sexual maturity is observed in the 170 mm size group in O. rafieranda majority (62.86%)
is mature at 200 mm. In /. dussumieri sexual maturity is manifest in the 140 mm
size group and a majority offish (51.85%) is mature at 160 mm. Fecundity in the size
range of 180-290 mm varies between 44,621 and 179,659 mature eggs in O. ruber, and in
/. dussumieri of size range 195-235 mm the number of mature eggs varies between 142,005
and 225,988.

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Author Biography

  • P Devadoss, Central Marine Fisheries Research Institute; Sub-station, Bombay
    Central Marine Fisheries Research Institute; Sub-station, Bombay

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Issue

Vol. 16 No. 1 & 2 (1969)

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

Devadoss, P. (2011). MATURITY AND SPAWNING IN OTOLITHUS RUBER (SCHN.) AND JOHNlOS DUSSUMIERl(C. & V.). Indian Journal of Fisheries, 16(1 & 2), 117-128. https://epubs.icar.org.in/index.php/IJF/article/view/13247