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Elife

Title:		Entomopathogenic nematodes increase predation success by inducing cadaver volatiles that attract healthy herbivores
Author(s):		Zhang X; Machado RA; Doan CV; Arce CC; Hu L; Robert CA;
Address:		"Institute of Plant Sciences, University of Bern, Bern, Switzerland. Institute of Biology, University of Neuchatel, Neuchatel, Switzerland"
Journal Title:		Elife
Year:		2019
Volume:		20190911
Issue:
Page Number:		-
DOI:		10.7554/eLife.46668
ISSN/ISBN:		2050-084X (Electronic) 2050-084X (Linking)
Abstract:		"Herbivore natural enemies protect plants by regulating herbivore populations. Whether they can alter the behavior of their prey to increase predation success is unknown. We investigate if and how infection by the entomopathogenic nematode Heterorhabditis bacteriophora changes the behavior of healthy larvae of the western corn rootworm (Diabrotica virgifera), a major pest of maize. We found that nematode-infected rootworm cadavers are attractive to rootworm larvae, and that this behavior increases nematode reproductive success. Nematode-infected rootworms release distinct volatile bouquets, including the unusual volatile butylated hydroxytoluene (BHT). BHT alone attracts rootworms, and increases nematode reproductive success. A screen of different nematode and herbivore species shows that attraction of healthy hosts to nematode-infected cadavers is widespread and likely involves species-specific volatile cues. This study reveals a new facet of the biology of herbivore natural enemies that boosts their predation success by increasing the probability of host encounters"
Keywords:		Animals Coleoptera/growth & development/*parasitology *Herbivory *Host-Parasite Interactions Larva/growth & development/parasitology Pheromones/*metabolism Strongyloidea/*growth & development/*metabolism Volatile Organic Compounds/*metabolism Zea mays/par;
Notes:		"MedlineZhang, Xi Machado, Ricardo Ar Doan, Cong Van Arce, Carla Cm Hu, Lingfei Robert, Christelle Am eng England 2019/09/12 Elife. 2019 Sep 11; 8:e46668. doi: 10.7554/eLife.46668"