Gene flow and the genealogical history of Heliconius heurippa

Camilo Salazar, Chris D. Jiggins, Jesse Taylor, Marcus R. Kronforst, Mauricio Linares

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Background. The neotropical butterfly Heliconius heurippa has a hybrid colour pattern, which also contributes to reproductive isolation, making it a likely example of hybrid speciation. Here we used phylogenetic and coalescent-based analyses of multilocus sequence data to investigate the origin of H. heurippa. Results. We sequenced a mitochondrial region (CoI and CoII), a sex-linked locus (Tpi) and two autosomal loci (w and sd) from H. heurippa and the putative parental species, H. cydno and H. melpomene. These were analysed in combination with data from two previously sequenced autosomal loci, Dll and Inv. H. heurippa was monophyletic at mtDNA and Tpi, but showed a shared distribution of alleles derived from both parental lineages at all four autosomal loci. Estimates of genetic differentiation showed that H. heurippa is closer to H. cydno at mtDNA and three autosomal loci, intermediate at Tpi, and closer to H. melpomene at Dll. Using coalescent simulations with the Isolation-Migration model (IM), we attempted to establish the incidence of gene flow in the origin of H. heurippa. This analysis suggested that ongoing introgression is frequent between all three species and variable in extent between loci. Conclusion. Introgression, which is a necessary precursor of hybrid speciation, seems to have also blurred the coalescent history of these species. The origin of Heliconius heurippa may have been restricted to introgression of few colour pattern genes from H. melpomene into the H. cydno genome, with little evidence of genomic mosaicism.

Original languageEnglish (US)
Article number132
JournalBMC Evolutionary Biology
Volume8
Issue number1
DOIs
StatePublished - 2008
Externally publishedYes

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Heliconius
Gene Flow
introgression
Mitochondrial DNA
gene flow
Color
History
Reproductive Isolation
Multilocus Sequence Typing
Butterflies
history
loci
Mosaicism
Melpomene
Alleles
reproductive isolation
Genome
butterfly
genetic differentiation
Incidence

ASJC Scopus subject areas

  • Medicine(all)
  • Ecology, Evolution, Behavior and Systematics

Cite this

Gene flow and the genealogical history of Heliconius heurippa. / Salazar, Camilo; Jiggins, Chris D.; Taylor, Jesse; Kronforst, Marcus R.; Linares, Mauricio.

In: BMC Evolutionary Biology, Vol. 8, No. 1, 132, 2008.

Research output: Contribution to journalArticle

Salazar, Camilo ; Jiggins, Chris D. ; Taylor, Jesse ; Kronforst, Marcus R. ; Linares, Mauricio. / Gene flow and the genealogical history of Heliconius heurippa. In: BMC Evolutionary Biology. 2008 ; Vol. 8, No. 1.
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