Investigating spatial-temporal contamination for two environments of the Amazon estuary: A multivariate approach.

Autor: da Silva Montes C; Laboratory of Cellular Ultrastructure and Immunohistochemistry, Institute of Biological Sciences, Federal University of Pará (UFPA), Belém, Pará, 66075-110, Brazil; Department of Zoology, Faculty of Natural Science and Oceanography, University of Concepción, Concepción, Chile. Electronic address: carolinesmontes@gmail.com., Fernandes da Paixão L; Laboratory of Cellular Ultrastructure and Immunohistochemistry, Institute of Biological Sciences, Federal University of Pará (UFPA), Belém, Pará, 66075-110, Brazil., Nunes B; Centro de Estudos do Ambiente e do Mar (CESAM), Universidade de Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal; Departamento de Biologia, Universidade de Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal., Pimentel Nunes ZM; Instituto de Estudos Costeiros, Universidade Federal do Pará, Alameda Leandro Ribeiro S/n Aldeia, Bragança, PA, 68600-000, Brazil., Pantoja Ferreira MA; Laboratory of Cellular Ultrastructure and Immunohistochemistry, Institute of Biological Sciences, Federal University of Pará (UFPA), Belém, Pará, 66075-110, Brazil., Martins da Rocha R; Laboratory of Cellular Ultrastructure and Immunohistochemistry, Institute of Biological Sciences, Federal University of Pará (UFPA), Belém, Pará, 66075-110, Brazil.
Jazyk: angličtina
Zdroj: Marine environmental research [Mar Environ Res] 2023 Mar; Vol. 185, pp. 105883. Date of Electronic Publication: 2023 Jan 19.
DOI: 10.1016/j.marenvres.2023.105883
Abstrakt: An assessment of environmental quality in Amazonian estuaries utilizing histological and immunohistochemical biomarkers concomitantly with analyses of trace metals in the tissues of Sciades herzbergii, also considering physical chemical analyzes of the water. 352 animals were captured from two sites and during two periods (dry and rainy). Site 1: São Marcos Bay - heavy anthropic influence and Site 2: Caeté estuary-preserved estuary. In the laboratory, the fish were weighed (g) and measured (cm). Fragments of gills and liver were analyzed using histology and immunohistochemistry (Caspase 3). The specimens from Site 1 presented a low-value condition factor, with the highest concentrations of Al, Cd, and Hg appearing in the muscle, and most severe damages to gills and liver. In contrast, individuals from Site 2 presented a high-value condition factor and showed low metal concentrations in the muscle with only slight tissue lesions. Furthermore, our results demonstrated that seasonal changes affect metal modulation and pathologies in fish at Site 1. The sentinel species chosen in this study is considered a strong bioindicator of pollution and the combination of different biomarkers was efficient in providing a clear view of the signs of exposure to pollutants, and the risks posed to fish health by the presence of metals in the environment, especially in Site 1.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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