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Ethotoxicological Role of Melatonin as an Anti-Stressor Agent in Heavy Metal Intoxicated Fish Channa punctatus

Ethotoxicological Role of Melatonin as an Anti-Stressor Agent in Heavy Metal Intoxicated Fish... Sublethal effects of arsenic trioxide, cadmium chloride, lead nitrate and mercuric chloride, were investigated on chromatophore morphology and behaviour of Channa punctatus. The protective role of melatonin was investigated. Changes were observed in the chromatophore pattern of fish scales and in fish behaviour after administration of the heavy metals. Heavy metal exposure caused restlessness in fishes and increased the dispersal of pigments in the chromatophores. Melatonin administration counteracted both these effects. The melatonin treatment did not modify metal concentration in scales, but it caused the aggregation of pigments in chromatophores of the fish. It also reduced the aggression observed in the fishes caused by the heavy metal administration. Toxicopathological alterations include statistically significant variations in the number, size and shape of the melanophores. The heavy metal-induced morphological changes in the melanophores indicate protective role against toxic insult of heavy metals. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Proceedings of the Zoological Society Springer Journals

Ethotoxicological Role of Melatonin as an Anti-Stressor Agent in Heavy Metal Intoxicated Fish Channa punctatus

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References (31)

Publisher
Springer Journals
Copyright
Copyright © 2014 by Zoological Society, Kolkata, India
Subject
Life Sciences; Life Sciences, general; Zoology; Animal Anatomy / Morphology / Histology; Animal Genetics and Genomics; Biodiversity; Conservation Biology/Ecology
ISSN
0373-5893
eISSN
0974-6919
DOI
10.1007/s12595-014-0107-6
Publisher site
See Article on Publisher Site

Abstract

Sublethal effects of arsenic trioxide, cadmium chloride, lead nitrate and mercuric chloride, were investigated on chromatophore morphology and behaviour of Channa punctatus. The protective role of melatonin was investigated. Changes were observed in the chromatophore pattern of fish scales and in fish behaviour after administration of the heavy metals. Heavy metal exposure caused restlessness in fishes and increased the dispersal of pigments in the chromatophores. Melatonin administration counteracted both these effects. The melatonin treatment did not modify metal concentration in scales, but it caused the aggregation of pigments in chromatophores of the fish. It also reduced the aggression observed in the fishes caused by the heavy metal administration. Toxicopathological alterations include statistically significant variations in the number, size and shape of the melanophores. The heavy metal-induced morphological changes in the melanophores indicate protective role against toxic insult of heavy metals.

Journal

Proceedings of the Zoological SocietySpringer Journals

Published: May 9, 2014

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