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Title: Morphological biomarkers in Prochilodus lineatus (pisces, prochilodontidae) for environmental impact assessment in the region of the Baixada Maranhense, Brazil

This study aimed to identify the types of histopathological lesions found in gills of Prochilodus lineatus of the Environmental Protection Area of the Baixada Maranhense region (Brazil). Fish were collected in Mearim river. Sampling took place in October, November and December 2014. We have purchased 30 samples of fish from local fishermen. In the laboratory fish gills were removed, and then fixed in 10% formalin solution and kept into alcohol 70% to the usual histological processing. The tissue was performed by light microscopy and findings were photomicrographed in light microscope - ZEIS. The following lesions were identified: epithelial displacement, the marginal channel shift a start vascular congestion, hyperplasia and merging multiple slides; epithelial disruption, edema, vascular congestion, total fusion of lamellae and disorganization of secondary lamellae. These changes express a response of the body to some xenobiontes. Morphological changes in the gills may represent adaptive strategies for conservation of some biological functions when animals are facing changes in the water quality.
Authors:
 [1] ;  [2] ; ;  [1] ;  [3] ;  [4] ;  [5]
  1. Master Program in Aquatic Resources and Fishery (PPGRAP/UEMA), State University of Maranhão (Brazil)
  2. (SEMA), Brazil janainnadantas@gmail.com (Brazil)
  3. Degree in Biological Sciences, State University of Maranhão (Brazil)
  4. Department of Chemistry and Biology, State University of Maranhão (Brazil)
  5. Department of Limnology and Oceanography, Federal University of Maranhão (Brazil)
Publication Date:
OSTI Identifier:
22499181
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1702; Journal Issue: 1; Conference: ICCMSE 2015: International conference of computational methods in sciences and engineering 2015, Athens (Greece), 20-23 Mar 2015; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 60 APPLIED LIFE SCIENCES; ALCOHOLS; ANIMAL TISSUES; BIOLOGICAL FUNCTIONS; BIOLOGICAL MARKERS; BRAZIL; EDEMA; ENVIRONMENTAL IMPACT STATEMENTS; ENVIRONMENTAL PROTECTION; FORMALDEHYDE; GILLS; HISTOLOGICAL TECHNIQUES; LAMELLAE; MICROSCOPES; MICROSCOPY; MORPHOLOGICAL CHANGES; RIVERS; WATER QUALITY