Université de Neuchâtel

Combined use of herbivore-induced plant volatiles and sex pheromones for mate location in braconid parasitoids

Xu, Hao ; Desurmont, Gaylord ; Degen, Thomas ; Zhou, Guoxin ; Laplanche, Diane ; Henryk, Luka ; Turlings, Ted C.J

In: Plant, Cell and Environment, 2017, vol. 40, no. 3, p. 330-339

Herbivore-induced plant volatiles (HIPVs) are important cues for female parasitic wasps to find hosts. Here, we investigated the possibility that HIPVs may also serve parasitoids as cues to locate mates. To test this, the odour preferences of four braconid wasps – the gregarious parasitoid Cotesia glomerata (L.) and the solitary parasitoids Cotesia marginiventris (Cresson),...

Université de Neuchâtel

Exceptional Use of Sex Pheromones by Parasitoids of the Genus Cotesia : Males Are Strongly Attracted to Virgin Females, but Are No Longer Attracted to or Even Repelled by Mated Females

Xu, Hao ; Veyrat, Nathalie ; Degen, Thomas ; Turlings, Ted C.J

In: Insects, 2014, vol. 5, no. 3, p. 499-512

Sex pheromones have rarely been studied in parasitoids, and it remains largely unknown how male and female parasitoids locate each other. We investigated possible attraction (and repellency) between the sexes of two braconid wasps belonging to the same genus, the gregarious parasitoid, Cotesia glomerata (L.), and the solitary parasitoid, Cotesia marginiventris (Cresson). Males of...