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Do major host shifts spark diversification in butterflies?

Authors :
Kaczvinsky C
Hardy NB
Source :
Ecology and evolution [Ecol Evol] 2020 Feb 26; Vol. 10 (8), pp. 3636-3646. Date of Electronic Publication: 2020 Feb 26 (Print Publication: 2020).
Publication Year :
2020

Abstract

The Escape and Radiate Hypothesis posits that herbivorous insects and their host plants diversify through antagonistic coevolutionary adaptive radiation. For more than 50 years, it has inspired predictions about herbivorous insect macro-evolution, but only recently have the resources begun to fall into place for rigorous testing of those predictions. Here, with comparative phylogenetic analyses of nymphalid butterflies, we test two of these predictions: that major host switches tend to increase species diversification and that such increases will be proportional to the scope of ecological opportunity afforded by a particular novel host association. We find that by and large the effect of major host-use changes on butterfly diversity is the opposite of what was predicted; although it appears that the evolution of a few novel host associations can cause short-term bursts of speciation, in general, major changes in host use tend to be linked to significant long-term decreases in butterfly species richness.<br />Competing Interests: None declared.<br /> (© 2020 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.)

Details

Language :
English
ISSN :
2045-7758
Volume :
10
Issue :
8
Database :
MEDLINE
Journal :
Ecology and evolution
Publication Type :
Academic Journal
Accession number :
32313623
Full Text :
https://doi.org/10.1002/ece3.6116