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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Herbicides employed in sugarcane plantations have lethal and sublethal effects to larval Boana pardalis (Amphibia, Hylidae)

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Author(s):
Moutinho, Mariana F. [1] ; de Almeida, Eduardo A. [2, 3] ; Espindola, Evaldo L. G. [4] ; Daam, Michiel A. [5] ; Schiesari, Luis [6]
Total Authors: 5
Affiliation:
[1] Univ Sao Paulo, Inst Biociencias, Programa Posgrad Ecol, Sao Paulo - Brazil
[2] Univ Estadual Paulista, Inst Biociencias Letras & Ciencias Exatas, Sao Jose do Rio Preto - Brazil
[3] Fundacao Univ Reg Blumenau, Blumenau - Brazil
[4] Univ Sao Paulo, Ctr Recursos Hidr & Ecol Aplicada, Escola Engn Sao Carlos, Sao Paulo - Brazil
[5] Univ Nova Lisboa, Fac Ciencias & Tecnol, Dept Ciencias Ambientais & Engn, Lisbon - Portugal
[6] Univ Sao Paulo, Escola Artes Ciencias & Humanidades, Ave Arlindo Beta 1000, BR-03828000 Sao Paulo - Brazil
Total Affiliations: 6
Document type: Journal article
Source: ECOTOXICOLOGY; v. 29, n. 7, p. 1043-1051, SEP 2020.
Web of Science Citations: 5
Abstract

The increasing demand for biofuels favored the expansion of sugarcane and, as a consequence, in the consumption of pesticides in Brazil. Amphibians are subject to pesticide exposure for occurring in or around sugarcane fields, and for breeding at the onset of the rainy season when pesticide consumption is common. We tested the hypothesis that herbicides used in sugarcane crops, although employed for weed control and manipulated at doses recommended by the manufacturers, can cause lethal and sublethal effects on amphibian larvae. Boana pardalis was exposed to glyphosate, ametryn, 2,4-D, metribuzin and acetochlor which account to up to 2/3 of the volume of herbicides employed in sugarcane production. High mortality was observed following prolonged exposure to ametryn (76%), acetochlor (68%) and glyphosate (15%); ametryn in addition significantly reduced activity rates and slowed developmental and growth rates. AChE activity was surprisingly stimulated by glyphosate, ametryn and 2,4-D, and GST activity by ametryn and acetochlor. Some of these sublethal effects, including the decrease in activity, growth and developmental rates, may have important consequences for individual performance for extending the larval period, and hence the risk of dessication, in the temporary and semi-permanent ponds where the species develops. Future studies should seek additional realism towards a risk analysis of the environmental contamination by herbicides through experiments manipulating not only active ingredients but also commercial formulations, as well as interactions among contaminants and other environmental stressors across the entire life cycle of native amphibian species. (AU)

FAPESP's process: 11/05280-6 - Comparative ecotoxicity of pesticides used in plantations of sugar cane on amphibian larvae
Grantee:Mariana Fekete Moutinho
Support Opportunities: Scholarships in Brazil - Master
FAPESP's process: 15/18790-3 - Environmental effects of the pasture-sugarcane conversion and pasture intensification
Grantee:Luiz Antonio Martinelli
Support Opportunities: Research Program on Global Climate Change - Thematic Grants
FAPESP's process: 08/57939-9 - Impacts of the expansion of the sugarcane agroindustry on freshwater communities
Grantee:Luis Cesar Schiesari
Support Opportunities: Program for Research on Bioenergy (BIOEN) - Young Investigators Grants