SOME OBSERVATIONS ON THE TREND OF ZOOPLANKTON AND ITS PROBABLE INFLUENCE ON LOCAL PELAGIC FISHERIES AT COLACHEL DURING 1973-74.


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Authors

  • C Suseelan Central Marine Fisheries Research Institute, Cochin
  • P Parameswaran Pillai Central Marine Fisheries Research Institute, Cochin
  • M Ayyappan Pillai Central Marine Fisheries Research Institute, Cochin
  • K Ramakrishnan Nair Central Marine Fisheries Research Institute, Cochin

Abstract

The zooplankton standing crop showed three peaks of abundance, in March,
September and December, the first two peaks during the periods of high
salinity. In the order of abundance, the forms which constituted the bulk of the
plankton were copepods, cladocerans, cirrepede larvae, Lucifer, chaetognaths and
appendicularians. The copepod distribution was found to have characters common
both to that of the adjacent coastal waters of Bay of Bengal on the southeast
coast and to that of the Arabian sea on the southwest coast. The peak occurrence
of cladocerans during May-July was followed by the appearance of juvenile mackerels
in early August. Pelagic fish catch, consisting mostly of anchovies and
lesser sardines, showed clear peaks, closely following the primary and secondary
peaks of plankton. The peak occurrence of anchovies during September-October
seems to be in prey-predator relationship with ribbonfish, the peak of which
followed closely.

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Author Biographies

  • C Suseelan, Central Marine Fisheries Research Institute, Cochin
    Central Marine Fisheries Research Institute, Cochin
  • P Parameswaran Pillai, Central Marine Fisheries Research Institute, Cochin
    Central Marine Fisheries Research Institute, Cochin
  • M Ayyappan Pillai, Central Marine Fisheries Research Institute, Cochin
    Central Marine Fisheries Research Institute, Cochin
  • K Ramakrishnan Nair, Central Marine Fisheries Research Institute, Cochin
    Central Marine Fisheries Research Institute, Cochin

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Issue

Vol. 32 No. 2 (1985)

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

Suseelan, C., Pillai, P. P., Pillai, M. A., & Nair, K. R. (2011). SOME OBSERVATIONS ON THE TREND OF ZOOPLANKTON AND ITS PROBABLE INFLUENCE ON LOCAL PELAGIC FISHERIES AT COLACHEL DURING 1973-74. Indian Journal of Fisheries, 32(2), 375-386. https://epubs.icar.org.in/index.php/IJF/article/view/11653