Evaluation of the bioaccumulation kinetics of toxic metals in fish (A. brasiliensis) and its application on monitoring of coastal ecosystems.

Autor: Vieira TC; Post-graduation Program on Geochemistry, Universidade Federal Fluminense, RJ, Brazil. Electronic address: thatiannev@id.uff.br., Rodrigues APC; Department of Marine Biology, Universidade Federal do Rio de Janeiro, RJ, Brazil., Amaral PMG; Institute of Biophysics Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, RJ, Brazil., de Oliveira DFC; Institute of Chemistry, Pontífica Universidade Católica do Rio de Janeiro, RJ, Brazil., Gonçalves RA; Institute of Chemistry, Pontífica Universidade Católica do Rio de Janeiro, RJ, Brazil., Rodrigues E Silva C; Post-graduation Program on Geochemistry, Universidade Federal Fluminense, RJ, Brazil., Vasques RO; Post-graduation Program on Geochemistry, Universidade Federal Fluminense, RJ, Brazil., Malm O; Institute of Biophysics Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, RJ, Brazil., Silva-Filho EV; Post-graduation Program on Geochemistry, Universidade Federal Fluminense, RJ, Brazil., Godoy JMO; Institute of Chemistry, Pontífica Universidade Católica do Rio de Janeiro, RJ, Brazil., Machado W; Post-graduation Program on Geochemistry, Universidade Federal Fluminense, RJ, Brazil., Filippo A; Department of Zootechny and Development of Agricultural-social-environmental Sustainability, Universidade Federal Fluminense, RJ, Brazil., Bidone ED; Post-graduation Program on Geochemistry, Universidade Federal Fluminense, RJ, Brazil.
Jazyk: angličtina
Zdroj: Marine pollution bulletin [Mar Pollut Bull] 2020 Feb; Vol. 151, pp. 110830. Date of Electronic Publication: 2020 Jan 29.
DOI: 10.1016/j.marpolbul.2019.110830
Abstrakt: This study proposes a pro-active approach for evaluations of methylmercury (MeHg), total mercury (THg), arsenic (As), cadmium (Cd) and lead (Pb) in situ bioaccumulation in fish (Atherinella brasiliensis) muscles, using specimens from the external sector of Guanabara Bay as a study case. This approach included an hierarchical sequence: analysis of the pollutants concentrations and their comparison to safety criteria; correlations between specimens concentrations vs length (as a proxy of exposure time); projections of concentrations in key lengths (sexual maturation, asymptotic, length limits for fishing and median of fish population) through polynomial regressions, dose-response analysis (Probit), decreasing curves and incorporation rates (using only three length intervals). The incorporation rates were ascending for MeHg and THg (continued bioaccumulation) and descending for As, Pb and Cd (possible biological dilution). The projections were satisfactory, evidencing their use for an improvement on the risks monitoring of fishing and fish consumption by humans in coastal environments.
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 © 2019 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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