MALATHION TOXICITY IN AIR-BREATHING CATFISH SINGHI (HETEROPNEUSTES FOSSILIS BLOCK)


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Authors

  • Rama Ghosh Dept. of Chemistry, Bose Institute, 9311 Acharya Prafulla Chandra Road, Calcutta 700009.
  • Jyotirmoy Dutta Dept. of Chemistry, Bose Institute, 9311 Acharya Prafulla Chandra Road, Calcutta 700009.

Abstract

Malathion toxicity in freshwater catfish singhi (Heteropneustes fossilis Bloch)
is reported in terms of mortality, fertilization of eggs and damage to ovary.
The LC50 value is 56 ppm. which is much higher than that in other freshwater
fishes for this pesticide. In the presence of 2 ppm and 10 ppm of malathion
53.3 ± 4.0% and 38.5 i 4.5% of eggs, respectively, are fertilized. Prolonged
exposure to 2 ppm for 6 months, however, produce extensive damage in ovary,
viz., degeneration of follicular wall, ooplasm and connective tissues. The high
LC,o value and low pesticide residue in iiesh (0.1 mg|g wet tissue), after a
fortnight of exposure to this dose, show that this fish is well-tolerant, suitable for
combined paddy-pisciculture.

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Author Biographies

  • Rama Ghosh, Dept. of Chemistry, Bose Institute, 9311 Acharya Prafulla Chandra Road, Calcutta 700009.
    Dept. of Chemistry, Bose Institute, 9311 Acharya Prafulla Chandra Road,
    Calcutta 700009.
  • Jyotirmoy Dutta, Dept. of Chemistry, Bose Institute, 9311 Acharya Prafulla Chandra Road, Calcutta 700009.
    Dept. of Chemistry, Bose Institute, 9311 Acharya Prafulla Chandra Road,
    Calcutta 700009.

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Issue

Vol. 32 No. 4 (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

Ghosh, R., & Dutta, J. (2011). MALATHION TOXICITY IN AIR-BREATHING CATFISH SINGHI (HETEROPNEUSTES FOSSILIS BLOCK). Indian Journal of Fisheries, 32(4), 447-452. https://epubs.icar.org.in/index.php/IJF/article/view/11665