DISTRIBUTION OF PRAWN SEED ACCORDING TO WATER DEPTH IN SHALLOW AREAS OF COCHIN BACKWATERS


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Authors

  • Sosamma Easo Central Marine Fisheries Research Institute, Cochin-682 031
  • K J Mathew Central Marine Fisheries Research Institute, Cochin-682 031

Abstract

In order to study the distribution and abundance of seed of Penaeus indicus, Melapenaeus dobsoni andM. monoceros according to depth gradient in the shallow water areas of Cochin backwaters, two samplingstations were selected and sampling for seed and sediment was carried out using a QSS (quantitative seedsampler) from different depth zones during premonsoon, monsoon and postmonsoon period of 1988.As a whole the average prawn seed density was 14/m2for P. indicus, 16/m2for M.dobsoni and 6/m2forM. monoceros. Seed of P. indicus found to be more concentrated at 10 and 30 cm depth zones wheresubstratum was sandy. But in the case of M. dobsoni and M. monoceros the seed were abundant at deeperzones of 60 and 90 cm where soil was silty or clayey in texture. Percentage of organic matter in the soildid not show any important role in determining the depth variation in the abundance of seed of penaeids.The size-wise distribution of the seed is also discussed

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Author Biographies

  • Sosamma Easo, Central Marine Fisheries Research Institute, Cochin-682 031
    Central Marine Fisheries Research Institute, Cochin-682 031
  • K J Mathew, Central Marine Fisheries Research Institute, Cochin-682 031
    Central Marine Fisheries Research Institute, Cochin-682 031

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Issue

Vol. 36 No. 3 (1989)

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

Easo, S., & Mathew, K. J. (2011). DISTRIBUTION OF PRAWN SEED ACCORDING TO WATER DEPTH IN SHALLOW AREAS OF COCHIN BACKWATERS. Indian Journal of Fisheries, 36(3), 211-219. https://epubs.icar.org.in/index.php/IJF/article/view/10639