Recombinant and classically selected factors of potato plant resistance to the Colorado potato beetle, Leptinotarsa decemlineata, variously affect the potato aphid parasitoid Aphidius nigripes

摘要: Different forms of crop resistance developed against majorpotato pests such as the Colorado potato beetle (CPB), Leptinotarsadecemlineata, may be variously compatible with biological controlof secondary aphids. We compared performance theparasitoid Aphidius nigripes developing in aphid hostMacrosiphum euphorbiae, on five lines, including atransgenic `Superior-BT' line expressing CryIIIA toxin ofBacillus thuringiensis, which is specific to Coleoptera; andthe `NYL 235-4' derived from Solanum berthaultii,characterized by relatively unspecific herbivores based onmoderately-high density glandular trichomes. The other lines testedwere a `Kennebec-OCI' transgenic protease inhibitorrice cystatin I (OCI), potential factor coleopteranpests; and commercial cultivars `Superior' `Kennebec' used ascontrols. Parasitoid immature survival adult size were reducedcompared controls when wasps aphids fed the`Superior-BT' potato. In contrast, parasitoid fecundityincreased above control the`Kennebec-OCI' Parasitoids reached stage faster andwere more fecund than lines. results indicatethat different currently mainlyagainst CPB had various unexpected effects parasitoidfitness. These complex but generallyinterpretable terms host quality variation among potatolines food during parasitoiddevelopment.