How phylogeny shapes the taxonomic and functional structure of plant-insect networks.

Oecologia
Sébastien IbanezSébastien Lavergne

Abstract

Phylogenetically related species share a common evolutionary history and may therefore have similar traits. In terms of interaction networks, where traits are a major determinant, related species should therefore interact with other species which are also related. However, this prediction is challenged by current evidence that there is a weak, albeit significant, phylogenetic signal in species' taxonomic niche, i.e., the identity of interacting species. We studied mutualistic and antagonistic plant-insect interaction networks in species-rich alpine meadows and show that there is instead a very strong phylogenetic signal in species' functional niches-i.e., the mean functional traits of their interactors. This pattern emerges because related species tend to interact with species bearing certain traits that allow biotic interactions (pollination, herbivory) but not necessarily with species from all the same evolutionary lineages. Those traits define a set of potential interactors and show clear patterns of phylogenetic clustering on several portions of plants and insect phylogenies. Thus, this emerging pattern of low phylogenetic signal in taxonomic niches but high phylogenetic signal in functional niches may be driven by the inte...Continue Reading

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Citations

Jun 10, 2017·Biological Reviews of the Cambridge Philosophical Society·David J PerovićNicolas Desneux
May 12, 2017·The Journal of Animal Ecology·Irene M A BenderMatthias Schleuning
Jan 13, 2017·Proceedings. Biological Sciences·Masayoshi K Hiraiwa, Atushi Ushimaru
Jan 5, 2020·Nature Ecology & Evolution·F DuchenneC Fontaine

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