期刊
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
卷 74, 期 4, 页码 852-859出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ecoenv.2010.12.005
关键词
Crocodilians; Caimans; Pesticides; Field-like exposure; Genotoxicity; Enzymatic alterations; Metabolic disorders; Growth delay
资金
- Proyecto Yacare and Yacares Santafesinos
- Universidad Nacional del Litoral
- Consejo Nacional de Investigaciones Cientificas y Tecnicas - CONICET [PIP 5012]
- Universidad de Buenos Aires [UBACyT X154]
In South America, economic interests in last years have produced a constant increase in transgenic soybean cropping, with the corresponding rise in pesticide formulated products. The aim of this study was to determine the effects of pesticides formulations and mixtures on a South American caiman, Caiman latirostris, after in ovo exposure. We conducted a field-like experiment which simulates the environmental exposure that a caiman nest can receive in neighbouring croplands habitats. Experimental groups were Control group, Treatment 1: sprayed with a glyphosate herbicide formulation, and Treatment 2: sprayed with a pesticide mixture of glyphosate, endosulfan and cypermethrin formulations. Results demonstrated genotoxicity, enzymatic and metabolic alterations, as well as growth delay in caimans exposed in ovo to Treatments 1 and 2, showing a higher toxicity for the mixture. Integral evaluation through biomarkers of different biological meaning is highly informative as early indicators of contamination with pesticides and mixtures in this wildlife species. (C) 2010 Elsevier Inc. All rights reserved.
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