Search results for "Buckwheat Conservation biological control Ecosystem services Nezara viridula Ooencyrtus telenomicida Trissolcus basalis"

Contrasting olfactory responses of two egg parasitoids to buckwheat floral scent are reflected in field parasitism rates

2019

International audience; Conservation biological control programs advocate the planting of flower strips alongside crops to improve the survival and effectiveness of parasitoids. Ideally, the provided food plants are highly attractive and benefit the targeted biocontrol agents without promoting pests or intraguild competition. Previous laboratory studies showed that Trissolcus basalis, an egg parasitoid of the stink bug Nezara viridula, is highly attracted to floral odors of buckwheat and that its nectar increases the wasp’s fecundity. In the field, T. basalis competes with the co-occurring parasitoid Ooencyrtus telenomicida for host eggs. Therefore, in the present study, we explored whether…