Pyrethroid insecticides in wild bird eggs from a world heritage listed park: a case study in Doñana National Park (Spain)
Recent studies demonstrated that the common pyrethroid insecticides are present in aquatic biota tissues. In this study, 123 samples of unhatched eggs of 16 wild bird species collected from 2010 to 2012 in Doñana National and Natural Park were analysed to determine 13 pyrethroids. This study represents the first time that pyrethroids are detected in tissues of terrestrial biota, 93% of these samples being positive to those pollutants. Levels of total pyrethroids ranged from not detected to 324 ng g lw. The samples were characterized by stable isotope analysis. Species with diets based on anthropogenic food showed higher levels of pyrethroids and lower values of δN. Finally, we characterized the isomers of pyrethroids and discerned some isomeric- and enantiomeric-specific accumulations. In particular, tetramethrin and cyhalothrin showed an enantiomeric-selective accumulation of one enantiomer, highlighting the need to assess toxicological effects of each enantiomer separately to be able to make a correct risk assessment of pyrethroids in birds.
| Main Authors: | , , , , , , |
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| Other Authors: | |
| Format: | artículo biblioteca |
| Published: |
Elsevier
2017-09
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| Subjects: | Pyrethroids, Cypermethrin, Wild bird eggs, Bioaccumulation, Isomer-selectivity, Insecticides, |
| Online Access: | http://hdl.handle.net/10261/198406 http://dx.doi.org/10.13039/501100002809 http://dx.doi.org/10.13039/501100003329 http://dx.doi.org/10.13039/501100003339 http://dx.doi.org/10.13039/501100014211 http://dx.doi.org/10.13039/501100011011 |
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