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Cascading trait-mediated interactions induced by ant pheromones
Trait-mediated indirect interactions (TMII) can be as important as density-mediated indirect interactions. Here, we provide evidence for a novel trait-mediated cascade (where one TMII affects another TMII) and demonstrate that the mechanism consists of a predator eavesdropping on chemical signaling....
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Blackwell Publishing Ltd
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3488669/ https://www.ncbi.nlm.nih.gov/pubmed/23139877 http://dx.doi.org/10.1002/ece3.322 |
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author | Hsieh, Hsun-Yi Liere, Heidi Soto, Estelí J Perfecto, Ivette |
author_facet | Hsieh, Hsun-Yi Liere, Heidi Soto, Estelí J Perfecto, Ivette |
author_sort | Hsieh, Hsun-Yi |
collection | PubMed |
description | Trait-mediated indirect interactions (TMII) can be as important as density-mediated indirect interactions. Here, we provide evidence for a novel trait-mediated cascade (where one TMII affects another TMII) and demonstrate that the mechanism consists of a predator eavesdropping on chemical signaling. Ants protect scale insects from predation by adult coccinellid beetles – the first TMII. However, parasitic phorid flies reduce ant foraging activity by 50% – the second TMII, providing a window of opportunity for female beetles to oviposit in high-quality microsites. Beetle larvae are protected from ant predation and benefit from living in patches with high scale densities. We demonstrate that female beetles can detect pheromones released by the ant when attacked by phorids, and that only females, and especially gravid females, are attracted to the ant pheromone. As ants reduce their movement when under attack by phorids, we conclude that phorids facilitate beetle oviposition, thus producing the TMII cascade. |
format | Online Article Text |
id | pubmed-3488669 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | Blackwell Publishing Ltd |
record_format | MEDLINE/PubMed |
spelling | pubmed-34886692012-11-08 Cascading trait-mediated interactions induced by ant pheromones Hsieh, Hsun-Yi Liere, Heidi Soto, Estelí J Perfecto, Ivette Ecol Evol Original Research Trait-mediated indirect interactions (TMII) can be as important as density-mediated indirect interactions. Here, we provide evidence for a novel trait-mediated cascade (where one TMII affects another TMII) and demonstrate that the mechanism consists of a predator eavesdropping on chemical signaling. Ants protect scale insects from predation by adult coccinellid beetles – the first TMII. However, parasitic phorid flies reduce ant foraging activity by 50% – the second TMII, providing a window of opportunity for female beetles to oviposit in high-quality microsites. Beetle larvae are protected from ant predation and benefit from living in patches with high scale densities. We demonstrate that female beetles can detect pheromones released by the ant when attacked by phorids, and that only females, and especially gravid females, are attracted to the ant pheromone. As ants reduce their movement when under attack by phorids, we conclude that phorids facilitate beetle oviposition, thus producing the TMII cascade. Blackwell Publishing Ltd 2012-09 2012-07-27 /pmc/articles/PMC3488669/ /pubmed/23139877 http://dx.doi.org/10.1002/ece3.322 Text en © 2012 Published by Blackwell Publishing Ltd. http://creativecommons.org/licenses/by/2.5/ Re-use of this article is permitted in accordance with the Creative Commons Deed, Attribution 2.5, which does not permit commercial exploitation. |
spellingShingle | Original Research Hsieh, Hsun-Yi Liere, Heidi Soto, Estelí J Perfecto, Ivette Cascading trait-mediated interactions induced by ant pheromones |
title | Cascading trait-mediated interactions induced by ant pheromones |
title_full | Cascading trait-mediated interactions induced by ant pheromones |
title_fullStr | Cascading trait-mediated interactions induced by ant pheromones |
title_full_unstemmed | Cascading trait-mediated interactions induced by ant pheromones |
title_short | Cascading trait-mediated interactions induced by ant pheromones |
title_sort | cascading trait-mediated interactions induced by ant pheromones |
topic | Original Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3488669/ https://www.ncbi.nlm.nih.gov/pubmed/23139877 http://dx.doi.org/10.1002/ece3.322 |
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