REPRODUCTION, FECUNDITY AND SEX RATIO OF THE GREEN TIGER PRAWN, PENAEUS SEMISULCATUS DE HAAN


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Authors

  • M M Thomas Central Marine Fisheries Research Institute, Cochin

Abstract

Investigations on the reproduction, gonado-somatic index, fecundity and sex
ratio of Penaeus semisulcatus were carried out at Mandapam Camp, from April,
1967 to March, 1969. Five stages of maturity could be differentiated depending on tlie
colour of the ovarian lobes, the thickness of the ovary and the size of the ova. Female
prawns with mature ovaries occurred throughout the year showing that they spawn
continuously, the peak season being June to September and January to February.
The gonado-somatic index exhibited a variation from 2.2 to 13.2. The minimum
size at maturity in females was found to be 23 mm carapace length. The fecundity
of the species was found to range between 51,605 and 6,60,904. There was no
relation between the fecundity and the length of prawn, weight of prawn or weight
of ovary. The samples examined contained more or less same number of males
and females, although, during certain months the males were more in number
while in other months the females were dominating.

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Author Biography

  • M M Thomas, Central Marine Fisheries Research Institute, Cochin
    Central Marine Fisheries Research Institute, Cochin

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Issue

Vol. 21 No. 1 (1974)

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

Thomas, M. M. (2011). REPRODUCTION, FECUNDITY AND SEX RATIO OF THE GREEN TIGER PRAWN, PENAEUS SEMISULCATUS DE HAAN. Indian Journal of Fisheries, 21(1), 152-163. https://epubs.icar.org.in/index.php/IJF/article/view/12282