Gene flow and the genealogical history of Heliconius heurippa

DSpace/Manakin Repository

Gene flow and the genealogical history of Heliconius heurippa

Citable link to this page

 

 
Title: Gene flow and the genealogical history of Heliconius heurippa
Author: Salazar, Camilo; Jiggins, Chris D; Taylor, Jesse E; Linares, Mauricio; Kronforst, Marcus

Note: Order does not necessarily reflect citation order of authors.

Citation: Salazar, Camilo, Chris D. Jiggins, Jesse E. Taylor, Marcus R. Kronforst, and Mauricio Linares. 2008. Gene flow and the genealogical history of Heliconius heurippa. BMC Evolutionary Biology 8: 132.
Full Text & Related Files:
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.
Published Version: doi:10.1186/1471-2148-8-132
Other Sources: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2391162/pdf/
Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:11213308
Downloads of this work:

Show full Dublin Core record

This item appears in the following Collection(s)

 
 

Search DASH


Advanced Search
 
 

Submitters