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Título: | Egg overspray with herbicides and fungicides reduces survival of red-legged partridge chicks |
Autor: | Ortiz-Santaliestra, Manuel E. CSIC ORCID ; Alcaide, Vicente; Camarero, Pablo R. CSIC ORCID; Mateo, Rafael CSIC ORCID ; Mougeot, François CSIC ORCID | Fecha de publicación: | 2020 | Editor: | American Chemical Society | Citación: | Environmental Science and Technology 54(19): 12402-12411 (2020) | Resumen: | Within the environmental risk assessment conducted for pesticide registration in the European Union (EU), avian reproductive toxicity is characterized after exposing adults. However, eggs of ground-nesting species can be exposed when pesticide applications occur during laying or incubation. We simulated environmentally realistic exposure of red-legged partridge (Alectoris rufa) eggs to an herbicide (2,4-D) and a fungicide (tebuconazole) applied to winter cereal crops during the breeding season of most farmland birds. We analyzed the effects on hatching success, offspring survival, and physiology. Exposure by overspray led to greater pesticide accumulation in the eggshell or content than exposure through contact with treated soil (3.1–13.7 times higher, depending on the pesticide and target sample). Egg overspray with tebuconazole significantly increased chick mortality, which was 26% higher than that of controls. 2,4-D caused a similar but a close to significant increase (chick mortality 24% higher than controls). Exposure to either pesticide through contact with treated soils did not affect chick survival but altered some biochemical parameters posthatching. Our experiment shows that egg spraying with pesticides should be considered as a relevant exposure scenario in risk assessment procedures, given its potential to affect the reproductive success of ground-nesting farmland birds. | Versión del editor: | https://doi.org/10.1021/acs.est.0c04203 | URI: | http://hdl.handle.net/10261/230600 | DOI: | 10.1021/acs.est.0c04203 | E-ISSN: | 1520-5851 |
Aparece en las colecciones: | (IREC) Artículos |
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accesoRestringido.pdf | 59,24 kB | Adobe PDF | Visualizar/Abrir |
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