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International Journal of Zoology and Applied Biosciences Research Article

Sublethal effects of lead arsenate on histology of selected organs of freshwater fish Cirrhinus mrigala

S. Vanitha, A. Amsath, P. Shanthi, and K. Muthukumaravel

Year : 2017 | Volume: 2 | Issue: 5 | Pages: 250-257

doi: https://doi.org/10.5281/zenodo.1312117

Received on: 09/18/2017

Revised on: 10/20/2017

Accepted on: 10/24/2017

Published on: 10/30/2017

  • S. Vanitha, A. Amsath, P. Shanthi, and K. Muthukumaravel ( 2017).

    Sublethal effects of lead arsenate on histology of selected organs of freshwater fish Cirrhinus mrigala

    . International Journal of Zoology and Applied Biosciences, 2( 5), 250-257.

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Abstract

Acute toxicity (96 h LC50) of  lead arsenate was evaluated in the Cirrhinus mrigala in static bioassay over a 96 –h exposure period using probit method. The 96 h LC50  values (with 95% confidence limits) of lead arsenate for fingerling fish were estimated as 7.21  mg/l respectively. Histopathological investigations revealed various degrees of pathological lesions in different organs like gill, liver, intestine and kidney. The gill showed the fusion, malformation of secondary lamellae at the tips, vaculation, hyperplasia and disintegration of epithelium. The liver of fish exposed to phenol showed cytoplasmic vaculation, necrosis and loss of hepatic cell wall. In the intestine, necrotic lesions in the epithelial layer, swellings and fusion with adjacent villi, fusion and integration of columnar epithelial layer. The kidney showed shrinkage of glomeruli, breakdown of Bowman’s capsule, vacuolization and disintegration of renal epithelium. The histological alterations in the fish could be used as an important tool for assessment of aquatic pollution. 

Keywords

Cirrhinus mrigala, Acute toxicity, Lead arsenate, Histology.

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    © The Author(s) 2025. This article is published by International Journal of Zoology and Applied Biosciences under the terms of the Creative Commons Attribution 4.0 International License (creativecommons.org), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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