Trait Characteristics Determine Pyrethroid Sensitivity in Nonstandard Test Species of Freshwater Macroinvertebrates: A Reality Check
| Autor: | Jes J. Rasmussen, Peter Wiberg-Larsen, Nikolai Friberg, Daniel Graeber, Annette Baattrup-Pedersen, Esben Astrup Kristensen |
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| Rok vydání: | 2016 |
| Předmět: |
Insecticides
010504 meteorology & atmospheric sciences Zoology Fresh Water 010501 environmental sciences 01 natural sciences Toxicology chemistry.chemical_compound Pyrethrins Environmental Chemistry Humans Pesticides 0105 earth and related environmental sciences Invertebrate Pyrethroid biology General Chemistry biology.organism_classification Reality check Behavioral response chemistry Trait Arthropod Indicator value Ecotoxicity Water Pollutants Chemical |
| Zdroj: | Wiberg-Larsen, P, Graeber, D, Baattrup-Pedersen, A, Astrup Kristensen, E, Friberg, N & Rasmussen, J 2016, ' Trait characteristics determine pyrethroid sensitivity in non-standard test species of freshwater macroinvertebrates – A reality check ', Environmental Science & Technology (Washington), vol. 50, no. 10, pp. 4971-4978 . https://doi.org/10.1021/acs.est.6b00315 |
| ISSN: | 1520-5851 |
| DOI: | 10.1021/acs.est.6b00315 |
| Popis: | We exposed 34 species of stream macroinvertebrates, representing 29 families, to a 90 min pulse of the pyrethroid λ-cyhalothrin. For 28 of these species, no pyrethroid ecotoxicity data exist. We recorded mortality rates 6 days post-exposure, and the behavioral response to pyrethroid exposure was recorded using automated video tracking. Most arthropod species showed mortality responses to the exposure concentrations (0.01-10 μg L(-1)), whereas nonarthropod species remained unaffected. LC50 varied by at least a factor of 1000 among arthropod species, even within the same family. This variation could not be predicted using ecotoxicity data from closely related species, nor using species-specific indicator values from traditional ecological quality indices. Moreover, LC50 was not significantly correlated to effect thresholds for behavioral responses. Importantly, however, the measured surface area-weight ratio and the preference for coarse substrates significantly influenced the LC50 for arthropod species, with the combination of small individuals and strong preference for coarse substrates indicating higher pyrethroid sensitivity. Our study highlights that existing pesticide ecotoxicity data should be extrapolated to untested species with caution and that actual body size (not maximum potential body size, as is usually available in traits databases) and habitat preference are central parameters determining species sensitivities to pyrethroids. |
| Databáze: | OpenAIRE |
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