Fine-scale biogeographical and temporal diversification processes of peacock swallowtails (Papilio subgenus Achillides) in the Indo-Australian Archipelago

Authors

  • Fabien L. Condamine,

    Corresponding author
    1. INRA, UMR 1062 Centre de Biologie pour la Gestion des Populations (INRA/IRD/CIRAD/Montpellier SupAgro), Campus International de Baillarguet, CS30016, 34988 Montferrier-sur-Lez, France
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  • Emmanuel F.A. Toussaint,

    1. INRA, UMR 1062 Centre de Biologie pour la Gestion des Populations (INRA/IRD/CIRAD/Montpellier SupAgro), Campus International de Baillarguet, CS30016, 34988 Montferrier-sur-Lez, France
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  • Adam M. Cotton,

    1. 86/2 Moo 5, Ban Hua Tung, Tambon Nong Kwai, Amphoe Hang Dong, Chiang Mai 50230 Thailand
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  • Gwenaelle S. Genson,

    1. INRA, UMR 1062 Centre de Biologie pour la Gestion des Populations (INRA/IRD/CIRAD/Montpellier SupAgro), Campus International de Baillarguet, CS30016, 34988 Montferrier-sur-Lez, France
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  • Felix A.H. Sperling,

    1. Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2E9, Canada
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  • Gael J. Kergoat

    1. INRA, UMR 1062 Centre de Biologie pour la Gestion des Populations (INRA/IRD/CIRAD/Montpellier SupAgro), Campus International de Baillarguet, CS30016, 34988 Montferrier-sur-Lez, France
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Corresponding author:
E-mail address: fabien.condamine@gmail.com

Abstract

© The Willi Hennig Society 2012.

Abstract

Explanations for the high species diversity of the Indo-Australian Archipelago are often challenged by the region’s complex climatic and geological histories. Here, we investigated the evolutionary history of swallowtail butterflies of the Papilio subgenus Achillides, comprising up to 25 recognized species and about 100 subspecies distributed across the Indo-Australian Archipelago. To estimate the relative contributions of factors influencing their biodiversity, we used DNA sequences to infer the phylogeny and species limits of 22 species including most of their subspecies. We recovered a highly resolved and well-supported phylogeny for the subgenus, and clarified some taxonomic ambiguities at the species level. The corresponding DNA-based species phylogeny was then employed to reconstruct their historical biogeography using relaxed-clock and parametric-based analyses. Molecular dating and biogeographical analyses showed that Achillides originated around 19 Ma in Sunda + Wallacea. Biogeographical reconstructions indicated that geological vicariance shaped the early evolutionary history of Achillides whereas dispersal influenced late diversification. Birth–death likelihood analyses allowed exploration of their tempo and mode of diversification. We detected several shifts in diversification rates that are attributable to past climate-induced biogeographical events. By assessing both regional and fine-scale biodiversity patterns, this study brings new findings to a biogeographical understanding of the Indo-Australian Archipelago.

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