Ivermectin alters reproductive success, body condition and sexual trait expression in dung beetles
| Autor: | Yesenia Villalobos-Ávalos, Daniel González-Tokman, Jean-Pierre Lumaret, Imelda Martínez M, Magdalena Cruz-Rosales, Roberto Munguía-Steyer, María del Rosario Ortiz-Zayas |
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| Rok vydání: | 2017 |
| Předmět: |
Male
0106 biological sciences Environmental Engineering Offspring Health Toxicology and Mutagenesis media_common.quotation_subject 010501 environmental sciences 01 natural sciences Toxicology Ivermectin parasitic diseases medicine Animals Body Size Environmental Chemistry Sex Ratio Mating 0105 earth and related environmental sciences Dung beetle media_common Antiparasitic Agents biology Reproductive success Reproduction Public Health Environmental and Occupational Health General Medicine General Chemistry biology.organism_classification Pollution Coleoptera 010602 entomology Phenotype Sexual selection Sex ratio medicine.drug |
| Zdroj: | Chemosphere. 178:129-135 |
| ISSN: | 0045-6535 |
| Popis: | Ivermectin is a very common parasiticide used in livestock. It is excreted in the dung and has negative effects on survival and reproduction of dung-degrading organisms, including dung beetles. Here we exposed the dung beetle Euoniticellus intermedius to different concentrations of ivermectin in the food and evaluated reproductive success and the expression of traits associated with survival and reproduction under laboratory conditions. It is the first time the effects of ivermectin were evaluated on offspring physiological condition and the expression of a secondary sexual trait. We also registered the number of emerged beetles, sex ratio and body size of emerged adult beetles. Besides reducing the number of emerged beetles and body size, as found in the same and other insects, ivermectin at high doses reduced muscle mass while at intermediate doses it increased lipid mass. Ivermectin changed offspring sex ratio and at high doses increased the size of male horn, which is an important trait defining the male mating success. Our results highlight the importance of regulating parasiticide usage in livestock in order to maintain ecosystem services provided by dung beetles and confirm that contaminants impose new environmental conditions that not only impact on wild animal survival, but also on evolutionary processes such as sexual selection. |
| Databáze: | OpenAIRE |
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