Fish tissues for biomonitoring toxic and essential trace elements in the Lower Amazon.

Autor: Albuquerque FEA; Laboratory of Animal Health, LARSANA, Federal University of Western Pará, UFOPA, Rua Vera Paz, S/n, Salé, CEP 68040-255, Santarém, PA, Brazil; Department of Animal Pathology, Veterinary Faculty, University of Santiago de Compostela, 27002, Lugo, Spain., Herrero-Latorre C; Research Institute on Chemical and Biological Analyses (IIAQBUS), Department of Analytical Chemistry, Nutrition and Bromatology, Faculty of Sciences, University of Santiago de Compostela, 27002, Lugo, Spain., Miranda M; Department of Anatomy, Animal Production and Clinical Veterinary Sciences, Veterinary Faculty, University of Santiago de Compostela, 27002, Lugo, Spain., Barrêto Júnior RA; Department of Animal Science, Federal Rural University of the Semiarid Region (UFERSA), Av. Francisco Mota, S/nº - Bairro Pres. Costa e Silva, CEP 59625-900, Mossoró, RN, Brazil., Oliveira FLC; Department of Clinical Science, College of Veterinary Medicine and Animal Science, University of Sao Paulo (FMVZ/USP), Av. Prof. Orlando Marques de Paiva, 87, Cidade Universitária, CEP 05508-270, São Paulo, SP, Brazil., Sucupira MCA; Department of Clinical Science, College of Veterinary Medicine and Animal Science, University of Sao Paulo (FMVZ/USP), Av. Prof. Orlando Marques de Paiva, 87, Cidade Universitária, CEP 05508-270, São Paulo, SP, Brazil., Ortolani EL; Department of Clinical Science, College of Veterinary Medicine and Animal Science, University of Sao Paulo (FMVZ/USP), Av. Prof. Orlando Marques de Paiva, 87, Cidade Universitária, CEP 05508-270, São Paulo, SP, Brazil., Minervino AHH; Laboratory of Animal Health, LARSANA, Federal University of Western Pará, UFOPA, Rua Vera Paz, S/n, Salé, CEP 68040-255, Santarém, PA, Brazil. Electronic address: ah.minervino@gmail.com., López-Alonso M; Department of Animal Pathology, Veterinary Faculty, University of Santiago de Compostela, 27002, Lugo, Spain.
Jazyk: angličtina
Zdroj: Environmental pollution (Barking, Essex : 1987) [Environ Pollut] 2021 Aug 15; Vol. 283, pp. 117024. Date of Electronic Publication: 2021 Mar 26.
DOI: 10.1016/j.envpol.2021.117024
Abstrakt: Brazilian soils can have high concentrations of toxic elements, mainly mercury (Hg) and arsenic (As), metals also associated with anthropogenic activities (e.g. intensive agriculture, mining, deforestation and hydroelectric plants). This can lead to large amounts of these elements reaching and/or being mobilized in the aquatic ecosystem, which constitutes a serious threat to the environment and to the health of local populations. Thus, we evaluate the feasibility of analyzing the tissues of freshwater fish species for monitoring toxic and trace element accumulation within the aquatic ecosystem in the Lower Amazon, Brazil. Two fish species were considered: Cichla temensis (Tucunaré), a carnivorous species, and Pterygoplichthys pardalis (Acari), a detritivorous species. Samples of liver and muscle from both species were evaluated in relation to their potential use for biomonitoring purposes. The study findings clearly demonstrate the value these fish species and tissues, particularly liver, for biomonitoring toxic and trace element concentrations in the aquatic environment across the study region. While Tucunaré liver proved the best option for biomonitoring elements that accumulate through the food chain (e.g. Hg), Acari liver better reflected elements that typically accumulate in the sediments (e.g. As). Moreover, the trace element profiles, determined using chemometric (multivariate) techniques, differed greatly in specimens from waters in the Andean mountain range (sampling sites located in the main course of the Amazon River) with high sediment concentrations, and in specimens from the Guyana and Brazilian shields (Porto Trombetas on the Trombetas River and Itaituba on the Tapajós River). The findings also indicate that deposition of elements in freshwater fish in this area is mainly associated with the geological origin of the soils and that large amounts of toxic elements can reach the aquatic ecosystem due to anthropogenic activities, thereby posing a serious danger to the environment and the health of the riverside communities.
(Copyright © 2021 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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