MULTILOCUS ANALYSES OF ADMIXTURE AND INTROGRESSION AMONG HYBRIDIZING HELICONIUS BUTTERFLIES
نویسندگان
چکیده
منابع مشابه
Multilocus analyses of admixture and introgression among hybridizing Heliconius butterflies.
Introgressive hybridization is an important evolutionary process and new analytical methods provide substantial power to detect and quantify it. In this study we use variation in the frequency of 657 AFLP fragments and DNA sequence variation from 15 genes to measure the extent of admixture and the direction of interspecific gene flow among three Heliconius butterfly species that diverged recent...
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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 patt...
متن کاملGenomic islands of divergence in hybridizing Heliconius butterflies identified by large-scale targeted sequencing.
Heliconius butterflies represent a recent radiation of species, in which wing pattern divergence has been implicated in speciation. Several loci that control wing pattern phenotypes have been mapped and two were identified through sequencing. These same gene regions play a role in adaptation across the whole Heliconius radiation. Previous studies of population genetic patterns at these regions ...
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Hybridization is a natural or anthropogenic process that can deeply affect the genetic make-up of populations, possibly decreasing individual fitness but sometimes favoring local adaptations. The population of Italian wolves (Canis lupus), after protracted demographic declines and isolation, is currently expanding in anthropic areas, with documented cases of hybridization with stray domestic do...
متن کاملQuantified reproductive isolation in Heliconius butterflies: Implications for introgression and hybrid speciation
Heliconius butterflies have become a model for the study of speciation with gene flow. For adaptive introgression to take place, there must be incomplete barriers to gene exchange that allow interspecific hybridization and multiple generations of backcrossing. The recent publication of estimates of individual components of reproductive isolation between several species of butterflies in the Hel...
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ژورنال
عنوان ژورنال: Evolution
سال: 2006
ISSN: 0014-3820,1558-5646
DOI: 10.1111/j.0014-3820.2006.tb01203.x