Journal
MOLECULAR ECOLOGY
Volume 24, Issue 10, Pages 2392-2405Publisher
WILEY
DOI: 10.1111/mec.13168
Keywords
host shift; mimicry; phylogenetics; RAD-Seq; speciation
Funding
- National Science Foundation [DEB-1342712, DEB-0639861, DEB-1342705, DGE-1247312]
- UC Mexus-CONACYT
- Direct For Biological Sciences [1342759] Funding Source: National Science Foundation
- Division Of Environmental Biology [1342759] Funding Source: National Science Foundation
- Division Of Environmental Biology
- Direct For Biological Sciences [1342705, 1342790] Funding Source: National Science Foundation
- Division Of Environmental Biology
- Direct For Biological Sciences [1342712] Funding Source: National Science Foundation
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Rapid diversification is often associated with morphological or ecological adaptations that allow organisms to radiate into novel niches. Neotropical Adelpha butterflies, which comprise over 200 species and subspecies, are characterized by extraordinary breadth in host plant use and wing colour patterns compared to their closest relatives. To examine the relationship between phenotypic and species diversification, we reconstructed the phylogenetic history of Adelpha and its temperate sister genus Limenitis using genomewide restriction-site-associated DNA (RAD) sequencing. Despite a declining fraction of shared markers with increasing evolutionary distance, the RAD-Seq data consistently generated well-supported trees using a variety of phylogenetic methods. These well-resolved phylogenies allow the identification of an ecologically important relationship with a toxic host plant family, as well as the confirmation of widespread, convergent wing pattern mimicry throughout the genus. Taken together, our results support the hypothesis that evolutionary innovations in both larvae and adults have permitted the colonization of novel host plants and fuelled adaptive diversification within this large butterfly radiation.
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