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dc.contributor.author Laukkanen, Liisa
dc.contributor.author Leimu, Roosa
dc.contributor.author Muola, Anne
dc.contributor.author Lilley, Marianna
dc.contributor.author Mutikainen, Pia
dc.coverage.spatial Finland
dc.date.accessioned 2012-10-12T19:57:33Z
dc.date.available 2012-10-12T19:57:33Z
dc.date.issued 2012-12-03
dc.identifier doi:10.5061/dryad.20nf5
dc.identifier.citation Laukkanen L, Leimu R, Muola A, Lilley M, Mutikainen P (2012) Genetic factors affecting food-plant specialization of an oligophagous seed predator. Journal of Evolutionary Biology 26(1):141-149.
dc.identifier.uri http://hdl.handle.net/10255/dryad.43131
dc.description Several ecological and genetic factors affect the diet specialization of insect herbivores. The evolution of specialization may be constrained by lack of genetic variation in herbivore performance on different food plant species. By traditional view, trade-offs, i.e., negative genetic correlations between the performance of the herbivores on different food-plant species favour the evolution of specialization. To investigate whether there is genetic variation or trade-offs in herbivore performance between different food plants that may influence specialization of the oligophagous seed-eating herbivore, Lygaeus equestris (Heteroptera), we conducted a feeding trial in laboratory using four food-plant species. Although L. equestris is specialized on Vincetoxicum hirundinaria (Apocynaceae) to some degree, it occasionally feeds on alternative food-plant species. We did not find significant negative genetic correlations between mortality, developmental time, and adult biomass of L. equestris on the different food-plant species. We found genetic variation in mortality and developmental time of L. equestris on some of the food plants, but not in adult biomass. Our results suggest that trade-offs do not affect adaptation and specialization of L. equestris to current and novel food-plant species, but the lack of genetic variation may restrict food-plant utilization. Since food-plant specialization of herbivores may have wide-ranging effects for instance on coevolving plant-herbivore interactions and speciation, it is essential to thoroughly understand the factors behind the specialization process. Our findings provide valuable information about the role of genetic factors in food-plant specialization of this oligophagous herbivore.
dc.relation.haspart doi:10.5061/dryad.20nf5/1
dc.relation.isreferencedby doi:10.1111/jeb.12037
dc.relation.isreferencedby PMID:23205948
dc.subject diet specialization
dc.subject evolution of specialization
dc.subject food-plant specialization
dc.subject genetic variation
dc.subject plant-herbivore interaction
dc.subject specialist herbivore
dc.subject trade-off
dc.title Data from: Genetic factors affecting food-plant specialization of an oligophagous seed predator
dc.type Article *
dwc.ScientificName Vincetoxicum hirundinaria
dwc.ScientificName Lygaeus equestris
dwc.ScientificName Verbascum thapsus
dwc.ScientificName Crepis tectorum
dwc.ScientificName Heteroptera
dwc.ScientificName Tanacetum vulgare
dc.contributor.correspondingAuthor Laukkanen, Liisa
prism.publicationName Journal of Evolutionary Biology

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Title Feeding trials of Lygaeus equestris
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