Maturation and sex ratio in edible oyster, Crassostrea madrasensis (Preston) around the Moheshkhali Channel, Bay of Bengal


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Authors

  • M D Alam Institute of Marine Sciences, University of Chittagong, Chittagong, Bangladesh
  • N G Das Institute of Marine Sciences, University of Chittagong, Chittagong, Bangladesh

Abstract

Maturation and sex ratio in Crassostrea madrasensis based on the distension of the gonads have been studied during October 1993 to September 1994 from the Moheshkhali Channel Five maturity stages comprising from early active, late active, ripe, spawned and indeterminate were distinguished on the basis of morphological characteristics of the gonads and gonadal index. Two spawning peaks viz. one major (post-monsoon) in October and another minor (monsoon) in May were observed in the study area. The sex ratio was explained by chi-square test and the ratio of female C. madrasensis to male was found to be 1 : 1.13.

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Author Biographies

  • M D Alam, Institute of Marine Sciences, University of Chittagong, Chittagong, Bangladesh
    Institute of Marine Sciences, University of Chittagong, Chittagong, Bangladesh
  • N G Das, Institute of Marine Sciences, University of Chittagong, Chittagong, Bangladesh
    Institute of Marine Sciences, University of Chittagong, Chittagong, Bangladesh

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Issue

Vol. 45 No. 1 (1998)

Section

Note

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

Alam, M. D., & Das, N. G. (2011). Maturation and sex ratio in edible oyster, Crassostrea madrasensis (Preston) around the Moheshkhali Channel, Bay of Bengal. Indian Journal of Fisheries, 45(1), 89-93. https://epubs.icar.org.in/index.php/IJF/article/view/8772