Biochemical and body condition markers in Rhinella icterica tadpoles exposed to atrazine, glyphosate, and quinclorac based herbicides in ecologically relevant concentrations.

Autor: Reichert LMM; Pontifical Catholic University of Rio Grande do Sul, PUCRS, School of Health and Life Sciences, Conservation Physiology Laboratory, Brazil; PPG- Ecology and Biodiversity Evolution. Electronic address: leici.reichert@acad.pucrs.br., de Oliveira DR; Pontifical Catholic University of Rio Grande do Sul, PUCRS, School of Health and Life Sciences, Conservation Physiology Laboratory, Brazil. Electronic address: diogo.reisoliv@gmail.com., Papaleo JL; Pontifical Catholic University of Rio Grande do Sul, PUCRS, School of Health and Life Sciences, Conservation Physiology Laboratory, Brazil. Electronic address: jonas.papaleo@acad.pucrs.br., Valgas AAN; Pontifical Catholic University of Rio Grande do Sul, PUCRS, School of Health and Life Sciences, Conservation Physiology Laboratory, Brazil; PPG, Animal Biology (Federal University of Rio Grande do Sul), Brazil. Electronic address: artur.valgas@acad.pucrs.br., Oliveira GT; Pontifical Catholic University of Rio Grande do Sul, PUCRS, School of Health and Life Sciences, Conservation Physiology Laboratory, Brazil; PPG- Ecology and Biodiversity Evolution. Electronic address: guendato@pucrs.br.
Jazyk: angličtina
Zdroj: Environmental toxicology and pharmacology [Environ Toxicol Pharmacol] 2022 Jul; Vol. 93, pp. 103884. Date of Electronic Publication: 2022 May 13.
DOI: 10.1016/j.etap.2022.103884
Abstrakt: Amphibians have suffered population decline due to several factors, including exposure to pesticides. In the south of Brazil, rice cultivations use herbicides based on atrazine, glyphosate and quinclorac as the commercial formulations Primoleo®, Roundup® and Facet®, respectively. Rhinella icterica was chosen to evaluate oxidative balance markers and body condition after exposure to three concentrations of herbicides (10, 20 and 40 µg/L of atrazine and quinclorac; 100, 250 and 500 µg/L of glyphosate). These xenobiotics, regardless of the concentrations used, accelerated the development process of animals and seemed to act as modulators of development. We observed no significant variations for any of the oxidative balance markers studied (superoxide dismutase, catalase, TBARS and carbonylated proteins); however, we cannot rule out that other antioxidant system components prevent oxidative stress. In general, atrazine and glyphosate accelerated the development of tadpoles, and quinclorac retards this process, which could impact the survival of these animals.
(Copyright © 2022 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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