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

Journal Article · Thu Dec 31 04:00:00 EST 2015 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4938903· OSTI ID:22499181

Dantas, Janaína Gomes ^[1]; Castro, Jonatas da Silva ^[1]; Sodré, Camilla Fernanda Lima ^[2]; Carvalho-Neta, Raimunda Nonata Fortes ^[3]; Junior, Audálio Rebelo Torres ^[4]

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1. Master Program in Aquatic Resources and Fishery (PPGRAP/UEMA), State University of Maranhão (Brazil)
2. Degree in Biological Sciences, State University of Maranhão (Brazil)
3. Department of Chemistry and Biology, State University of Maranhão (Brazil)
4. Department of Limnology and Oceanography, Federal University of Maranhão (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.

• OSTI ID: 22499181
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1702; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

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