Genetic, enzymatic and developmental alterations observed in Caiman latirostris exposed in ovo to pesticide formulations and mixtures in an experiment simulating environmental exposure

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• 作者：Gisela L. Poletta^a ; ^b ; ^c ; ^{gpoletta@fbcb.unl.edu.ar"" rel=""nofollow} ; ^{gisepoletta@yahoo.com"" rel=""nofollow} ; Elisa Kleinsorge^b ; Adriana Paonessa^b ; Marta D. Mudry^c ; Alejandro Larriera^a ; ^d ; Pablo A. Siroski^a
• 关键词：Crocodilians ; Caimans ; Pesticides ; Field-like exposure ; Genotoxicity ; Enzymatic alterations ; Metabolic disorders ; Growth delay
• 刊名：Ecotoxicology and Environmental Safety
• 出版年：2011
• 出版时间：May 2011
• 年：2011
• 卷：74
• 期：4
• 页码：852-859
• 全文大小：860 K

文摘

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.