Behavioral and mutagenic biomarkers in tadpoles exposed to different abamectin concentrations

Environmental Science and Pollution Research International
Diogo Ferreira do AmaralGuilherme Malafaia

Abstract

It is known that pesticides such as abamectin (ABA) present cytotoxic effects on target organisms; however, the effects from ABA on non-target organisms such as amphibians are poorly understood. The aim of the current study is to investigate whether the exposure of Lithobates catesbeianus tadpoles to different abamectin concentrations [12.5, 25, and 50% of the median lethal concentration (LC50)] leads to behavioral and morphological changes and/or generates possible cytotoxic effects. The aggregation test showed that tadpoles exposed to the highest ABA concentrations did not respond to the stimulus from non-familial and unrelated co-specific species. On the other hand, there was no difference in the total number of crossings in the central line of the herein adopted apparatus between groups; it suggests that ABA did not affect animal locomotion in the aforementioned test, although changes in the normal swimming pattern of tadpoles exposed to the pesticide were recorded in the swimming activity test. In addition, the herein exposed animals did not respond to the predatory stimulus in the antipredator response test; this result suggests defensive response deficit caused by the pesticide. With respect to their oral morphology, tad...Continue Reading

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Citations

Apr 9, 2019·Journal of Biochemical and Molecular Toxicology·Shanshan ZhuQiqi Zhu
Feb 9, 2020·Environmental Science and Pollution Research International·Yiran LiangJiye Hu
Oct 3, 2020·Integrated Environmental Assessment and Management·Geonildo Rodrigo DisnerMonica Lopes-Ferreira
Jul 6, 2020·The Science of the Total Environment·Amanda Pereira da Costa AraújoGuilherme Malafaia
Sep 2, 2019·Journal of Hazardous Materials·Amanda Pereira da Costa AraújoGuilherme Malafaia
Mar 24, 2021·Environmental Toxicology and Pharmacology·Felipe André PavanMarilia Teresinha Hartmann

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