MATURATION AND BREEDING HABIT OF DASYATIS (AMPHOTISTIUS) IMBRICATUS (SCHNEIDER) AT PORTO NOVO


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Authors

  • P Devadoss Central Marine Fisheries Research Institute Centre, Calicut-5.

Abstract

In Dasyatis imbricatus only the ovary and the uterus on the left side are
functional. It has a prolonged breeding season from December to July and produces
1 or 2 emibryos. The ova are ready for ovulation even before the parturition
of the embryo in the uterus. The females reach maturity when they attain the size
of 170-179 mm as confirmed by the ponderal index. The males in the 160-169inin
size group are mature as judged by the relationship between body length and
elasper length. S;xes in the commerical catches vary — 51.25% mles to 48.75%
females

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Author Biography

  • P Devadoss, Central Marine Fisheries Research Institute Centre, Calicut-5.
    Central Marine Fisheries Research Institute Centre, Calicut-5.

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Issue

Vol. 25 No. 1 & 2 (1978)

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). MATURATION AND BREEDING HABIT OF DASYATIS (AMPHOTISTIUS) IMBRICATUS (SCHNEIDER) AT PORTO NOVO. Indian Journal of Fisheries, 25(1 & 2), 29-34. https://epubs.icar.org.in/index.php/IJF/article/view/12081