Advanced

Evolution of Hypolimnas butterflies (Nymphalidae) : Out-of-Africa origin and Wolbachia-mediated introgression

Sahoo, Ranjit Kumar; Lohman, David J.; Wahlberg, Niklas LU ; Müller, Chris J.; Brattström, Oskar LU ; Collins, Steve C.; Peggie, Djunijanti; Aduse-Poku, Kwaku and Kodandaramaiah, Ullasa (2018) In Molecular Phylogenetics and Evolution 123. p.50-58
Abstract

Hypolimnas butterflies (Nymphalidae), commonly known as eggflies, are a popular model system for studying a wide range of ecological questions including mimicry, polymorphism, wing pattern evolution, and Wolbachia-host interactions. The lack of a time-calibrated phylogeny for this group has precluded understanding its evolutionary history. We reconstruct a species-level phylogeny using a nine gene dataset and estimate species divergence times. Based on the resulting tree, we investigate the taxon's historical biogeography, examine the evolution of host plant preferences, and test the hypothesis that the endosymbiotic bacterium Wolbachia mediates gene transfer between species. Our analyses indicate that the species are grouped within... (More)

Hypolimnas butterflies (Nymphalidae), commonly known as eggflies, are a popular model system for studying a wide range of ecological questions including mimicry, polymorphism, wing pattern evolution, and Wolbachia-host interactions. The lack of a time-calibrated phylogeny for this group has precluded understanding its evolutionary history. We reconstruct a species-level phylogeny using a nine gene dataset and estimate species divergence times. Based on the resulting tree, we investigate the taxon's historical biogeography, examine the evolution of host plant preferences, and test the hypothesis that the endosymbiotic bacterium Wolbachia mediates gene transfer between species. Our analyses indicate that the species are grouped within three strongly supported, deeply divergent clades. However, relationships among these three clades are uncertain. In addition, many Hypolimnas species are not monophyletic or monophyletic with weak support, suggesting widespread incomplete lineage sorting and/or introgression. Biogeographic analysis strongly indicates that the genus diverged from its ancestor in Africa and subsequently dispersed to Asia; the strength of this result is not affected by topological uncertainties. While the larvae of African species feed almost exclusively on Urticaceae, larvae of species found further east often feed on several additional families. Interestingly, we found an identical mitochondrial haplotype in two Hypolimnas species, H. bolina and H. alimena, and a strong association between this mitotype and the Wolbachia strain wBol1a. Future investigations should explore the plausibility of Wolbachia-mediated introgression between species.

(Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Arabia-Asia land bridge, Biogeography, Horizontal gene transfer, Host plant, Mid-Miocene climatic optimum, Oscillation hypothesis
in
Molecular Phylogenetics and Evolution
volume
123
pages
9 pages
publisher
Elsevier
external identifiers
  • scopus:85042377214
ISSN
1055-7903
DOI
10.1016/j.ympev.2018.02.001
language
English
LU publication?
yes
id
8963425d-a198-4778-9373-f6b7bb3d64b6
date added to LUP
2018-03-05 08:28:04
date last changed
2018-05-29 09:40:01
@article{8963425d-a198-4778-9373-f6b7bb3d64b6,
  abstract     = {<p>Hypolimnas butterflies (Nymphalidae), commonly known as eggflies, are a popular model system for studying a wide range of ecological questions including mimicry, polymorphism, wing pattern evolution, and Wolbachia-host interactions. The lack of a time-calibrated phylogeny for this group has precluded understanding its evolutionary history. We reconstruct a species-level phylogeny using a nine gene dataset and estimate species divergence times. Based on the resulting tree, we investigate the taxon's historical biogeography, examine the evolution of host plant preferences, and test the hypothesis that the endosymbiotic bacterium Wolbachia mediates gene transfer between species. Our analyses indicate that the species are grouped within three strongly supported, deeply divergent clades. However, relationships among these three clades are uncertain. In addition, many Hypolimnas species are not monophyletic or monophyletic with weak support, suggesting widespread incomplete lineage sorting and/or introgression. Biogeographic analysis strongly indicates that the genus diverged from its ancestor in Africa and subsequently dispersed to Asia; the strength of this result is not affected by topological uncertainties. While the larvae of African species feed almost exclusively on Urticaceae, larvae of species found further east often feed on several additional families. Interestingly, we found an identical mitochondrial haplotype in two Hypolimnas species, H. bolina and H. alimena, and a strong association between this mitotype and the Wolbachia strain wBol1a. Future investigations should explore the plausibility of Wolbachia-mediated introgression between species.</p>},
  author       = {Sahoo, Ranjit Kumar and Lohman, David J. and Wahlberg, Niklas and Müller, Chris J. and Brattström, Oskar and Collins, Steve C. and Peggie, Djunijanti and Aduse-Poku, Kwaku and Kodandaramaiah, Ullasa},
  issn         = {1055-7903},
  keyword      = {Arabia-Asia land bridge,Biogeography,Horizontal gene transfer,Host plant,Mid-Miocene climatic optimum,Oscillation hypothesis},
  language     = {eng},
  month        = {06},
  pages        = {50--58},
  publisher    = {Elsevier},
  series       = {Molecular Phylogenetics and Evolution},
  title        = {Evolution of Hypolimnas butterflies (Nymphalidae) : Out-of-Africa origin and Wolbachia-mediated introgression},
  url          = {http://dx.doi.org/10.1016/j.ympev.2018.02.001},
  volume       = {123},
  year         = {2018},
}