ON THE OCCURRENCE OF FISH LARVAE IN THE MANORA CHANNEL, KARACHI


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Authors

  • J Ali Khan Institute of Marine Biology, University of Karachi, Karachi 32.
  • Talat Waqar Institute of Marine Biology, University of Karachi, Karachi 32.

Abstract

A study based on surface samples collected from three fixed stations over
the years 1968-70 shows that the ichthyoplankton is very poor in the Manora
channel obviously because, with considerable waste materials introduced from the
iishing harbour, the oil and sewage from large number of ships and boats and
the discharge received from the Lyari river, to which the sewerage system of
Karachi city is linked, the channel is now unfit to sustain a larval fish population
of any magnitude. The fish larvae, mainly belonging to 24 identified families,
are being brought into the channel with the tidal flow, ideally when the tidal
height is 2-2.5 m. But these larvae, especially the smaller ones, return back with
the tide, and whatever larvae remain are either confined to the lower harbour
or suffering mortality.
The yearwise and seasonwise distribution of the larvae of the various
families are given along with graphs

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Author Biographies

  • J Ali Khan, Institute of Marine Biology, University of Karachi, Karachi 32.
    Institute of Marine Biology, University of Karachi, Karachi 32.
  • Talat Waqar, Institute of Marine Biology, University of Karachi, Karachi 32.
    Institute of Marine Biology, University of Karachi, Karachi 32.

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Issue

Vol. 32 No. 1 (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

Khan, J. A., & Waqar, T. (2011). ON THE OCCURRENCE OF FISH LARVAE IN THE MANORA CHANNEL, KARACHI. Indian Journal of Fisheries, 32(1), 90-99. https://epubs.icar.org.in/index.php/IJF/article/view/11616