Fungal-Mediated Multitrophic Interactions - Do Grass Endophytes in Diet Protect Voles from Predators?

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dc.contributor.author Saari, Susanna
dc.contributor.author Sundell, Janne
dc.contributor.author Huitu, Otso
dc.contributor.author Helander, Marjo
dc.contributor.author Ketoja, Elisa
dc.contributor.author Ylönen, Hannu
dc.contributor.author Saikkonen, Kari
dc.date.accessioned 2012-08-20T09:41:42Z
dc.date.available 2012-08-20T09:41:42Z
dc.date.issued 2010
dc.identifier.citation Saari, S., Sundell, J., Huitu, O., Helander, M., Ketoja, E., Ylönen, H., & Saikkonen, K. (2010). Fungal-Mediated Multitrophic Interactions - Do Grass Endophytes in Diet Protect Voles from Predators?. PLoS ONE 5(3): e9845. doi:10.1371/journal.pone.0009845
dc.identifier.issn 1932-6203
dc.identifier.uri http://hdl.handle.net/123456789/38314
dc.description.abstract Plant-associated micro-organisms such as mycotoxin-producing endophytes commonly have direct negative effects on herbivores. These effects may be carried over to natural enemies of the herbivores, but this has been rarely explored. We examined how feeding on Neotyphodium endophyte infected (E+) and endophyte free (E−) meadow ryegrass (Scherodonus pratensis) affects body mass, population size and mobility of sibling voles (Microtus levis), and whether the diet mediates the vulnerability of voles to least weasel (Mustela nivalis nivalis) predation. Because least weasels are known to be olfactory hunters, we also examined whether they are able to distinguish olfactory cues of voles fed on E+ and E− diets. Neither body mass of voles nor population size differed between diets. However, contrary to our prediction, least weasels preyed more often on voles fed with E− grass than on voles fed with E+ grass. The mobility of voles fed on E+ grass was reduced compared to voles fed on E− grass, but this effect was unrelated to risk of predation. Least weasels appeared unable to distinguish between excrement odours of voles between the two treatments. Our results suggest that consumption of endophytic grass is not directly deleterious to sibling voles. What's more, consumption of endophytes appears to be advantageous to voles by reducing risk of mammalian predation. Our study is thus the first to demonstrate an effect of plant-associated microbial symbionts on herbivore-predator interactions in vertebrate communities. fi
dc.language.iso eng
dc.publisher Public Library of Science
dc.relation.ispartofseries PLoS ONE
dc.rights © 2010 Saari et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
dc.subject.other petoriski fi
dc.subject.other metsämyyrä fi
dc.subject.other endofyytit fi
dc.subject.other predation risk fi
dc.subject.other bank vole fi
dc.subject.other endophytes fi
dc.title Fungal-Mediated Multitrophic Interactions - Do Grass Endophytes in Diet Protect Voles from Predators?
dc.type Article en
dc.identifier.urn URN:NBN:fi:jyu-201208202184
dc.subject.kota 118
dc.contributor.laitos Bio- ja ympäristötieteiden laitos fi
dc.contributor.laitos The Department of Biological and Environmental Science en
dc.type.uri http://purl.org/eprint/type/JournalArticle
dc.identifier.doi doi:10.1371/journal.pone.0009845
dc.description.version Publisher's PDF
eprint.status http://purl.org/eprint/type/status/PeerReviewed

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