Effect of cadmium chloride on the melanophores of Channa striatus (Bloch)


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Authors

  • M V Radhakrishnan Department of Zoology, Annamalai University, Annamalai Nagar-608 002, India
  • S Hemalatha Department of Zoology, Annamalai University, Annamalai Nagar-608 002, India
  • V I Paul Department of Zoology, Annamalai University, Annamalai Nagar-608 002, India

Abstract

Sublethal effects of cadmium chloride (10 ppm. 10% of 96 h LC50) on the
melanophores of Channa striatus was investigated to understand its toxicity on
melanophore morphology. Observed toxicopathological alterations include
statistically significant variations in the number, size and shape of the melanophors.
Due to the lysis of the melanophores, the melanin contents are poured
into the surrounding matrix of the connective tissue, between 20 and 30 days of
exposure. The cadmium induced morphological changes in the melanophores seem
to be an attempt by the organism to protect the delicate epidermis from the toxic
medium. In addition to the physiological colour changes, there occurs slow
morphological colour changes also as evidenced by the gradual regeneration of the
chromatophores. The density of chromatophores is maximum after 45 days. The
regenerated pigment cells were smaller in size and more in number when compared
with the normal melanophores. The present study also shows a melanizing effect
against cadmium toxicity.

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Author Biographies

  • M V Radhakrishnan, Department of Zoology, Annamalai University, Annamalai Nagar-608 002, India
    Department of Zoology, Annamalai University,
    Annamalai Nagar-608 002, India
  • S Hemalatha, Department of Zoology, Annamalai University, Annamalai Nagar-608 002, India
    Department of Zoology, Annamalai University,
    Annamalai Nagar-608 002, India
  • V I Paul, Department of Zoology, Annamalai University, Annamalai Nagar-608 002, India
    Department of Zoology, Annamalai University,
    Annamalai Nagar-608 002, India

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Issue

Vol. 47 No. 2 (2000)

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

Radhakrishnan, M. V., Hemalatha, S., & Paul, V. I. (2011). Effect of cadmium chloride on the melanophores of Channa striatus (Bloch). Indian Journal of Fisheries, 47(2), 135-141. https://epubs.icar.org.in/index.php/IJF/article/view/8552