Co-occurrence of defensive traits in the potato aphid Macrosiphum euphorbiae
| العنوان: | Co-occurrence of defensive traits in the potato aphid Macrosiphum euphorbiae |
|---|---|
| المؤلفون: | Stephen P. Foster, Hannah Victoria Clarke, Ewan W. Waters, L. Oliphant, Alison J. Karley |
| المصدر: | Ecological Entomology. 43:538-542 |
| بيانات النشر: | Wiley, 2018. |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | 0106 biological sciences, Aphid, Veterinary medicine, Ecology, biology, Macrosiphum euphorbiae, Biological pest control, food and beverages, Parasitism, biochemical phenomena, metabolism, and nutrition, biology.organism_classification, Hamiltonella defensa, 010603 evolutionary biology, 01 natural sciences, Intraspecific competition, Parasitoid wasp, 010602 entomology, Insect Science, Genotype |
| الوصف: | 1. Insecticide usage selects strongly for resistance in aphid populations, but this could entail fitness costs in other resistance traits. The potato aphid Macrosiphum euphorbiae Thomas exhibits intraspecific variation in susceptibility to parasitism by braconid wasps and provides a suitable species to study the relation between the defensive traits of parasitism and insecticide resistance. 2. Clonal lines (23 in total) of M. euphorbiae were established from aphids collected in 2013 from geographically separate populations in the U.K. Clonal lines belonged to five aphid genotypes, but one genotype predominated (78% of samples), and the facultative endosymbiont Hamiltonella defensa was detected in c. 40% of lines. 3. Total esterase activity in aphid tissues varied significantly between aphid genotypes and collection areas, but there was no clear pattern in relation to H. defensa infection or between collection sites likely to differ in insecticide pressures. 4. Five clonal lines representing low to moderate levels of enzyme activity, which included different aphid genotypes and presence/absence of H. defensa infection, were assayed for their susceptibility to the parasitoid wasp Aphidius ervi Haliday. Aphid mummification varied significantly between aphid genotypes, with low values in one genotype of aphids irrespective of H. defensa presence. 5. The results revealed that aphid lines belonging to the parasitism-resistant genotype exhibited moderate levels of total esterase activity, indicating a competitve advantage for this genotype of M. euphorbiae when exposed to chemical and biological control factors in agroecosystems. |
| تدمد: | 0307-6946 |
| DOI: | 10.1111/een.12522 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::1bb46551e4d7bbcb44e74b43e21bce82 https://doi.org/10.1111/een.12522 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi...........1bb46551e4d7bbcb44e74b43e21bce82 |
| قاعدة البيانات: | OpenAIRE |
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