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Host conservatism, host shifts and diversification across three trophic levels in two Neotropical forests
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2012 (English)In: Journal of Evolutionary Biology, ISSN 1010-061X, E-ISSN 1420-9101, Vol. 25, no 3, 532-546 p.Article in journal (Refereed) Published
Abstract [en]

Hostparasite systems have been models for understanding the connection between shifts in resource use and diversification. Despite theoretical expectations, ambiguity remains regarding the frequency and importance of host switches as drivers of speciation in herbivorous insects and their parasitoids. We examine phylogenetic patterns with multiple genetic markers across three trophic levels using a diverse lineage of geometrid moths (Eois), specialist braconid parasitoids (Parapanteles) and plants in the genus Piper. Hostparasite associations are mapped onto phylogenies, and levels of cospeciation are assessed. We find nonrandom patterns of host use within both the moth and wasp phylogenies. The mothplant associations in particular are characterized by small radiations of moths associated with unique host plants in the same geographic area (i.e. closely related moths using the same host plant species). We suggest a model of diversification that emphasizes an interplay of factors including host shifts, vicariance and adaptation to intraspecific variation within hosts.

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2012. Vol. 25, no 3, 532-546 p.
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URN: urn:nbn:se:umu:diva-53252DOI: 10.1111/j.1420-9101.2011.02446.xISI: 000300501200011OAI: oai:DiVA.org:umu-53252DiVA: diva2:511877
Available from: 2012-03-23 Created: 2012-03-19 Last updated: 2017-12-07Bibliographically approved

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Rodriguez-Castaneda, Maria Genoveva
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Department of Ecology and Environmental Sciences
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