Parasitism overrides herbivore identity allowing hyperparasitoids to locate their parasitoid host using herbivore-induced plant volatiles

Molecular Ecology
Feng ZhuErik H Poelman

Abstract

Foraging success of predators profoundly depends on reliable and detectable cues indicating the presence of their often inconspicuous prey. Carnivorous insects rely on chemical cues to optimize foraging efficiency. Hyperparasitoids that lay their eggs in the larvae or pupae of parasitic wasps may find their parasitoid hosts developing in different herbivores. They can use herbivore-induced plant volatiles (HIPVs) to locate parasitized caterpillars. Because different herbivore species induce different HIPV emission from plants, hyperparasitoids may have to deal with large variation in volatile information that indicates host presence. In this study, we used an ecogenomics approach to first address whether parasitized caterpillars of two herbivore species (Pieris rapae and P. brassicae) induce similar transcriptional and metabolomic responses in wild Brassica oleracea plants and, second, whether hyperparasitoids Lysibia nana are able to discriminate between these induced plant responses to locate their parasitoid host in different herbivores under both laboratory and field conditions. Our study revealed that both herbivore identity and parasitism affect plant transcriptional and metabolic responses to herbivory. We also found tha...Continue Reading

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Citations

Jul 21, 2016·Current Opinion in Insect Science·Ian KaplanPaul J Ode
Jun 9, 2016·Current Opinion in Plant Biology·Marcel Dicke
Nov 13, 2019·Pest Management Science·Antonino CusumanoJetske de Boer
May 2, 2018·Proceedings of the National Academy of Sciences of the United States of America·Feng ZhuErik H Poelman
Jun 8, 2017·Annual Review of Phytopathology·Ikkei ShikanoGary W Felton
Oct 8, 2019·Annual Review of Entomology·Marcel DickeErik H Poelman
Nov 13, 2019·Journal of Chemical Ecology·Ching-Wen TanGary W Felton
Apr 19, 2021·Current Opinion in Insect Science·Antonino Cusumano, Anne-Nathalie Volkoff

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