STUDIES ON THE FISHERY AND BIOLOGY OF PANGASIUS PANGASIUS (HAMILTON) OF THE NAGARJUNASAGAR RESERVOIR IN ANDHRA PRADESH


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Authors

  • N Ramakrishniah Reservoir Fisheries Project of CIFR Institute, Nagarjunasagar

Abstract

The catfish Pangasius pangasius contributed to an average annual catch of
5!.7 t from the reservoir during 1976-80. The average length of fish in the catch
was much below the length at maturity. The fish, which have been aged with the
aid of pectoral spines, were in the main in the age groups III, IV and V. Females
were predominant in the population beyond age VI. The difference in growth rate
was not significant between sexes, but the length-weight relationship differed
significantly. Mature specimens were noted in sizes beyond 630 mm total length.
A single mode of mature eggs was found in> a fuMy mature ovary. As against its
reported omnivorous habit, the fish were found preferimgly feeding on molluscs,
switching over to other items only n'in absence of molluscs

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Author Biography

  • N Ramakrishniah, Reservoir Fisheries Project of CIFR Institute, Nagarjunasagar
    Reservoir Fisheries Project of CIFR Institute, Nagarjunasagar

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Issue

Vol. 33 No. 3 (1986)

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

Ramakrishniah, N. (2011). STUDIES ON THE FISHERY AND BIOLOGY OF PANGASIUS PANGASIUS (HAMILTON) OF THE NAGARJUNASAGAR RESERVOIR IN ANDHRA PRADESH. Indian Journal of Fisheries, 33(3), 320-335. https://epubs.icar.org.in/index.php/IJF/article/view/10918