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Entomopathogenic nematodes increase predation success by inducing cadaver volatiles that attract healthy herbivores

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...

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Autores principales: Zhang, Xi, Machado, Ricardo AR, Doan, Cong Van, Arce, Carla CM, Hu, Lingfei, Robert, Christelle AM
Formato: Online Artículo Texto
Lenguaje:English
Publicado: eLife Sciences Publications, Ltd 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6739876/
https://www.ncbi.nlm.nih.gov/pubmed/31509107
http://dx.doi.org/10.7554/eLife.46668
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author Zhang, Xi
Machado, Ricardo AR
Doan, Cong Van
Arce, Carla CM
Hu, Lingfei
Robert, Christelle AM
author_facet Zhang, Xi
Machado, Ricardo AR
Doan, Cong Van
Arce, Carla CM
Hu, Lingfei
Robert, Christelle AM
author_sort Zhang, Xi
collection PubMed
description 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.
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spelling pubmed-67398762019-09-13 Entomopathogenic nematodes increase predation success by inducing cadaver volatiles that attract healthy herbivores Zhang, Xi Machado, Ricardo AR Doan, Cong Van Arce, Carla CM Hu, Lingfei Robert, Christelle AM eLife Ecology 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. eLife Sciences Publications, Ltd 2019-09-11 /pmc/articles/PMC6739876/ /pubmed/31509107 http://dx.doi.org/10.7554/eLife.46668 Text en © 2019, Zhang et al http://creativecommons.org/licenses/by/4.0/ http://creativecommons.org/licenses/by/4.0/This article is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use and redistribution provided that the original author and source are credited.
spellingShingle Ecology
Zhang, Xi
Machado, Ricardo AR
Doan, Cong Van
Arce, Carla CM
Hu, Lingfei
Robert, Christelle AM
Entomopathogenic nematodes increase predation success by inducing cadaver volatiles that attract healthy herbivores
title Entomopathogenic nematodes increase predation success by inducing cadaver volatiles that attract healthy herbivores
title_full Entomopathogenic nematodes increase predation success by inducing cadaver volatiles that attract healthy herbivores
title_fullStr Entomopathogenic nematodes increase predation success by inducing cadaver volatiles that attract healthy herbivores
title_full_unstemmed Entomopathogenic nematodes increase predation success by inducing cadaver volatiles that attract healthy herbivores
title_short Entomopathogenic nematodes increase predation success by inducing cadaver volatiles that attract healthy herbivores
title_sort entomopathogenic nematodes increase predation success by inducing cadaver volatiles that attract healthy herbivores
topic Ecology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6739876/
https://www.ncbi.nlm.nih.gov/pubmed/31509107
http://dx.doi.org/10.7554/eLife.46668
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