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| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidade Estadual de Maringá
2015
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| Online Access: | https://www.redalyc.org/articulo.oa?id=307239651014 |
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Table of Contents:
- Environmental quality of an estuary in Amazon delta using immunohistochemical and morphological analyses of gill as biomarkers Caroline da Silva Montes Maria Auxiliadora Pantoja Ferreira Simone do Socorro Damasceno Santos Rossineide Martins Rocha Medicina TUNEL teleost Histology Barcarena industrial effluents In this study, histological, ultrastructural, and immunohistochemical observations of the gill tissue of two fish species ( Plagioscion squamosissimus and Lithodoras dorsalis ) were used as biomarkers to assess the ecological conditions of an estuary in the Amazon de lta, by relating the health status of the fishes to environmental quality. The gill tissue was analyzed both qualitatively and semi-quantitatively. Marked differences in the type and severity of lesions were verified between specie s and among study sites. A variety of severe damages were confirmed histologically in specim ens from the two impacted areas (B and C), including aneurysms, epithelial lifting, and intense hyperplasia. Electron microscopy and immunohistochemical analyses also revealed injuries in the gill tissue of specimens from these two areas. While, on area A only few specimens showed mild changes in gill tissues and rare marking of apoptosis. These results confirm the urgent need for the more effective control of the discharge of pollu tants into the estuary as well as more effective urban planning, given the close proximity of a major industrial complex to residential areas. 2015 artículo científico 1679-9291 https://www.redalyc.org/articulo.oa?id=307239651014 en http://www.redalyc.org/revista.oa?id=3072 Acta Scientiarum. Health Sciences application/pdf Universidade Estadual de Maringá Acta Scientiarum. Health Sciences (Brasil) Num.1 Vol.37