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Host density and parasitoid presence interact and shape the outcome of a tritrophic interaction on seeds of wild lima bean

The interaction between the seed beetle Zabrotes subfasciatus and its parasitoid Stenocorse bruchivora, was investigated on seeds of two populations of wild lima bean, Phaseolus lunatus. By manipulating the number of beetle larvae per seed and the presence of parasitoids, we determined how factors r...

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Autores principales: Cuny, Maximilien A. C., Traine, Juan, Bustos-Segura, Carlos, Benrey, Betty
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6901471/
https://www.ncbi.nlm.nih.gov/pubmed/31819127
http://dx.doi.org/10.1038/s41598-019-55143-5
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author Cuny, Maximilien A. C.
Traine, Juan
Bustos-Segura, Carlos
Benrey, Betty
author_facet Cuny, Maximilien A. C.
Traine, Juan
Bustos-Segura, Carlos
Benrey, Betty
author_sort Cuny, Maximilien A. C.
collection PubMed
description The interaction between the seed beetle Zabrotes subfasciatus and its parasitoid Stenocorse bruchivora, was investigated on seeds of two populations of wild lima bean, Phaseolus lunatus. By manipulating the number of beetle larvae per seed and the presence of parasitoids, we determined how factors related to beetle larvae density, the seed in which they feed and the parasitoid, may interact and affect host and parasitoid survival. Results showed that an increase in larval beetle density had a negative impact on beetle performance. This effect cascaded up to parasitoids, high larval density strongly reduced parasitoid emergence. Also, parasitoid presence resulted in faster beetle development and lower female weight. An interactive effect between larval host density and parasitoid presence affected the number of insects that emerged from the seeds. Beetle performance was better in the bean population with the largest seeds, while parasitoid emergence was the lowest in these seeds. This study shows that the impact of parasitoids on seed beetles is contingent on the interaction between density-mediated (direct mortality) and trait-mediated (e.g. non-consumptive) effects. Indirect trait-mediated effects of natural enemies are likely prevalent across insect communities, understanding their role in driving host-parasitoid interactions can have important implications for biological control.
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spelling pubmed-69014712019-12-12 Host density and parasitoid presence interact and shape the outcome of a tritrophic interaction on seeds of wild lima bean Cuny, Maximilien A. C. Traine, Juan Bustos-Segura, Carlos Benrey, Betty Sci Rep Article The interaction between the seed beetle Zabrotes subfasciatus and its parasitoid Stenocorse bruchivora, was investigated on seeds of two populations of wild lima bean, Phaseolus lunatus. By manipulating the number of beetle larvae per seed and the presence of parasitoids, we determined how factors related to beetle larvae density, the seed in which they feed and the parasitoid, may interact and affect host and parasitoid survival. Results showed that an increase in larval beetle density had a negative impact on beetle performance. This effect cascaded up to parasitoids, high larval density strongly reduced parasitoid emergence. Also, parasitoid presence resulted in faster beetle development and lower female weight. An interactive effect between larval host density and parasitoid presence affected the number of insects that emerged from the seeds. Beetle performance was better in the bean population with the largest seeds, while parasitoid emergence was the lowest in these seeds. This study shows that the impact of parasitoids on seed beetles is contingent on the interaction between density-mediated (direct mortality) and trait-mediated (e.g. non-consumptive) effects. Indirect trait-mediated effects of natural enemies are likely prevalent across insect communities, understanding their role in driving host-parasitoid interactions can have important implications for biological control. Nature Publishing Group UK 2019-12-09 /pmc/articles/PMC6901471/ /pubmed/31819127 http://dx.doi.org/10.1038/s41598-019-55143-5 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Cuny, Maximilien A. C.
Traine, Juan
Bustos-Segura, Carlos
Benrey, Betty
Host density and parasitoid presence interact and shape the outcome of a tritrophic interaction on seeds of wild lima bean
title Host density and parasitoid presence interact and shape the outcome of a tritrophic interaction on seeds of wild lima bean
title_full Host density and parasitoid presence interact and shape the outcome of a tritrophic interaction on seeds of wild lima bean
title_fullStr Host density and parasitoid presence interact and shape the outcome of a tritrophic interaction on seeds of wild lima bean
title_full_unstemmed Host density and parasitoid presence interact and shape the outcome of a tritrophic interaction on seeds of wild lima bean
title_short Host density and parasitoid presence interact and shape the outcome of a tritrophic interaction on seeds of wild lima bean
title_sort host density and parasitoid presence interact and shape the outcome of a tritrophic interaction on seeds of wild lima bean
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6901471/
https://www.ncbi.nlm.nih.gov/pubmed/31819127
http://dx.doi.org/10.1038/s41598-019-55143-5
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