Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/76049
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Type: | Journal article |
Title: | Adaptive introgression across species boundaries in heliconius butterflies |
Author: | Pardo-Diaz, C. Salazar, C. Baxter, S. Merot, C. Figueiredo-Ready, W. Joron, M. McMillan, W. Jiggins, C. |
Citation: | PLoS Genetics, 2012; 8(6):1-14 |
Publisher: | Public Library of Science |
Issue Date: | 2012 |
ISSN: | 1553-7390 1553-7404 |
Editor: | R. Kronforst, M. |
Statement of Responsibility: | Carolina Pardo-Diaz, Camilo Salazar, Simon W. Baxter, Claire Merot, Wilsea Figueiredo-Ready, Mathieu Joron, W. Owen McMillan and Chris D. Jiggins |
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. |
Keywords: | Animals Butterflies Pigmentation Sequence Analysis, DNA Hybridization, Genetic Adaptation, Biological Phylogeny Species Specificity Genotype Phenotype Genome, Insect Genetic Speciation Biological Evolution Reproductive Isolation Wings, Animal |
Rights: | This is an open-access article, free of all copyright, and may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose. The work is made available under the Creative Commons CC0 public domain dedication. |
DOI: | 10.1371/journal.pgen.1002752 |
Published version: | http://dx.doi.org/10.1371/journal.pgen.1002752 |
Appears in Collections: | Aurora harvest Environment Institute publications Molecular and Biomedical Science publications |
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hdl_76049.pdf | Published version | 634.39 kB | Adobe PDF | View/Open |
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