Data/hora: 10/06/2024 15:01:46

Provedor de dados: | 103
País: | Brazil
Título: | The agricultural impact of pesticides on Physalaemus cuvieri tadpoles (Amphibia: Anura) ascertained by comet assay
Autores: | Gonçalves,Macks W.; Gambale,Priscilla G.; Godoy,Fernanda R.; Alves,Alessandro Arruda; Rezende,Pedro H. de Almeida; Cruz,Aparecido D. da; Maciel,Natan M.; Nomura,Fausto; Bastos,Rogério P.; Marco-Jr,Paulo de; Silva,Daniela de M.
Data: | 2017-01-01
Ano: | 2017
Palavras-chave: | Amphibians; Bioindicators; Exposure; Genotoxicity; Pesticides.
Resumo: | ABSTRACT Amphibians inhabiting agricultural areas are constantly exposed to large amounts of chemicals, which reach the aquatic environment during the rainy season through runoff, drainage, and leaching. We performed a comet assay on the erythrocytes of tadpoles found in the surroundings of agricultural fields (soybean and corn crops), where there is an intense release of several kinds of pesticides in different quantities. We aimed to detect differences in the genotoxic parameters between populations collected from soybeans and cornfields, and between them and tadpoles sampled from non-agricultural areas (control group). Tadpoles collected from ponds located at soybean fields had significantly more DNA damage, followed by tadpoles collected from cornfields. In contrast, animals sampled from non-agricultural areas had the lowest incidence of DNA damage. In addition, we found a negative correlation between the parameters of the comet assay and the area of the ponds surrounding soybean. This correlation indicates a possible dilution effect in the concentration of pesticides. Finally, Physalaemus cuvieri Fitzinger, 1826 seems to be a good bioindicator for detecting the genotoxic effects of field agricultural insecticides; therefore, we suggest that this species should be used in environmental biomonitoring studies, since it is common and abundant where it occurs.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702017000100316
Editor: | Sociedade Brasileira de Zoologia
Relação: | 10.3897/zoologia.34.e19865
Formato: | text/html
Fonte: | Zoologia (Curitiba)  v.34 2017
Fonte: | info:eu-repo/semantics/openAccess