Population, breeding and recruitment of Ganga river prawn Macrobrachium choprai


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Authors

  • Sree Prakash . Agra Research Centre, Central Inland Capture Fisheries Research Institute, E-27, New Agra, Agra. Uttar Pradesh 282 005

Abstract

Studies were conducted on Macrobrachium choprai during 1983-86 in Gangetic stretch from
Allahabad to Bhagalpur. Monsoon, the breeding season, showed the highest catch and the cyclical
movements were relatively unimportant. Practically 6 size groups were observed in the catches in both
the sexes but females perdominated during breeding period, the pre-and post-monsoon. Length-weight
relationship was governed by the cube law with modification and average growth rate was recorded to
be 4-6 mm/inonth. There were 6 stages of maturity presenting polymodal distribution in monthly ovadiameter
polygon. The first maturity was observed at 60 mm. Breeding, embryonic development and
hatching occurred in freshwater and hatchlings swam away to esturine zone for larval development.
They re-migrate upwards during autumn after attaining juvenile stage, for nursing and growth giving
inceased abundance progressively downwards.

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Author Biography

  • Sree Prakash ., Agra Research Centre, Central Inland Capture Fisheries Research Institute, E-27, New Agra, Agra. Uttar Pradesh 282 005
    Agra Research Centre, Central Inland Capture Fisheries Research Institute,
    E-27, New Agra, Agra. Uttar Pradesh 282 005

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Issue

Vol. 41 No. 1 (1994)

Section

Articles

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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

., S. P. (2011). Population, breeding and recruitment of Ganga river prawn Macrobrachium choprai. Indian Journal of Fisheries, 41(1), 1-8. https://epubs.icar.org.in/index.php/IJF/article/view/10157