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Adaptive Introgression across Species Boundaries in Heliconius Butterflies

Open access
Pardo-Diaz, Carolina, Salazar, Camilo, Baxter, Simon W., Merot, Claire, Figueiredo-Ready, Wilsea, Joron, Mathieu, McMillan, W. Owen, Jiggins, Chris D.·2012·PLoS Genetics

Abstract

It is widely documented that hybridisation occurs between many closely related species, but the importance of introgression in adaptive evolution remains unclear, especially in animals. Here, we have examined the role of introgressive hybridisation in transferring adaptations between mimetic Heliconius butterflies, taking advantage of the recent identification of a gene regulating red wing patterns in this genus. By sequencing regions both linked and unlinked to the red colour locus, we found a region that displays an almost perfect genotype by phenotype association across four species, H. melpomene, H. cydno, H. timareta, and H. heurippa. This particular segment is located 70 kb downstream of the red colour specification gene optix, and coalescent analysis indicates repeated introgression of adaptive alleles from H. melpomene into the H. cydno species clade. Our analytical methods complement recent genome scale data for the same region and suggest adaptive introgression has a crucial role in generating adaptive wing colour diversity in this group of butterflies.

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Metadata

Authors
Pardo-Diaz, C., Salazar, C., Baxter, S. W., Merot, C., Figueiredo-Ready, W., Joron, M., McMillan, W. O., & Jiggins, C. D.
Venue
PLoS Genetics
Published
2012-06-21
Volume
8
Issue
6
Pages
e1002752
ISSN
  • 1553-7390 (ISSN-L)
  • 1553-7404
OpenAlex
W1975533499
Cited by
391
References
5
FWCI
15.24
Type
journal article
Language
en
Open access
gold

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CoChat. (2026). Citation check: Adaptive Introgression across Species Boundaries in Heliconius Butterflies. https://app.cochat.ai/papers/10.1371/journal.pgen.1002752
The paper
Pardo-Diaz, C., Salazar, C., Baxter, S. W., Merot, C., Figueiredo-Ready, W., Joron, M., McMillan, W. O., & Jiggins, C. D. (2012). Adaptive Introgression across Species Boundaries in Heliconius Butterflies. PLoS Genetics. https://doi.org/10.1371/journal.pgen.1002752

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