Hybrid speciation driven by multilocus introgression of ecological traits
Copyright policy )Hybrid speciation driven by multilocus introgression of ecological traits
AbstractHybridization allows adaptations to be shared among lineages and may trigger the evolution of new species1,2. However, convincing examples of homoploid hybrid speciation remain rare because it is challenging to demonstrate that hybridization was crucial in generating reproductive isolation3. Here we combine population genomic analysis with quantitative trait locus mapping of species-specific traits to examine a case of hybrid speciation in Heliconius butterflies. We show that Heliconius elevatus is a hybrid species that is sympatric with both parents and has persisted as an independently evolving lineage for at least 180,000 years. This is despite pervasive and ongoing gene flow with one parent, Heliconius pardalinus, which homogenizes 99% of their genomes. The remaining 1% introgressed from the other parent, Heliconius melpomene, and is scattered widely across the H. elevatus genome in islands of divergence from H. pardalinus. These islands contain multiple traits that are under disruptive selection, including colour pattern, wing shape, host plant preference, sex pheromones and mate choice. Collectively, these traits place H. elevatus on its own adaptive peak and permit coexistence with both parents. Our results show that speciation was driven by introgression of ecological traits, and that speciation with gene flow is possible with a multilocus genetic architecture.
- Sorbonne Paris Cité France
- McGill University Canada
- French National Centre for Scientific Research France
- Leibniz Association Germany
- National University of San Marcos Peru
Male, Introgression, Speciation, Genome, Insect, Evolutionary biology, Mating Preference, Gene, Agricultural and Biological Sciences, Sociology, Ecological speciation, Wings, Wings, Animal, Mimicry, DNA Barcoding for Lepidoptera Taxonomy and Evolution, Incipient speciation, Genome, Ecology, Pigmentation, Ecological genetics, Life Sciences, Biodiversity, Gene flow, Sympatric speciation, FOS: Sociology, Phylogenetics, Sympatry, Phenotype, Genetic algorithm, Female, Impact of Pollinator Decline on Ecosystems and Agriculture, Population Genetic Structure and Dynamics, Habitat Fragmentation, Coalescent theory, Butterflies, Gene Flow, 570, Quantitative trait loci, Hybrid zone, Reproductive Isolation, Genetic Speciation, Quantitative Trait Loci, Population, [SDV.GEN.GA] Life Sciences [q-bio]/Genetics/Animal genetics, Genetic Introgression, Evolutionary genetics, Article, Genetic, Species Specificity, Biochemistry, Genetics and Molecular Biology, [SDV.BID.EVO] Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE], Genetics, Animals, Genetic variation, Selection, Genetic, Hybridization, Selection, Biology, Ecology, Evolution, Behavior and Systematics, Demography, 580, Müllerian mimicry, Animal, Heliconius, Mating Preference, Animal, Reproductive isolation, FOS: Biological sciences, [SDV.BA.ZI] Life Sciences [q-bio]/Animal biology/Invertebrate Zoology, [SDV.GEN.GPO] Life Sciences [q-bio]/Genetics/Populations and Evolution [q-bio.PE], Hybridization, Genetic, Insect
Male, Introgression, Speciation, Genome, Insect, Evolutionary biology, Mating Preference, Gene, Agricultural and Biological Sciences, Sociology, Ecological speciation, Wings, Wings, Animal, Mimicry, DNA Barcoding for Lepidoptera Taxonomy and Evolution, Incipient speciation, Genome, Ecology, Pigmentation, Ecological genetics, Life Sciences, Biodiversity, Gene flow, Sympatric speciation, FOS: Sociology, Phylogenetics, Sympatry, Phenotype, Genetic algorithm, Female, Impact of Pollinator Decline on Ecosystems and Agriculture, Population Genetic Structure and Dynamics, Habitat Fragmentation, Coalescent theory, Butterflies, Gene Flow, 570, Quantitative trait loci, Hybrid zone, Reproductive Isolation, Genetic Speciation, Quantitative Trait Loci, Population, [SDV.GEN.GA] Life Sciences [q-bio]/Genetics/Animal genetics, Genetic Introgression, Evolutionary genetics, Article, Genetic, Species Specificity, Biochemistry, Genetics and Molecular Biology, [SDV.BID.EVO] Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE], Genetics, Animals, Genetic variation, Selection, Genetic, Hybridization, Selection, Biology, Ecology, Evolution, Behavior and Systematics, Demography, 580, Müllerian mimicry, Animal, Heliconius, Mating Preference, Animal, Reproductive isolation, FOS: Biological sciences, [SDV.BA.ZI] Life Sciences [q-bio]/Animal biology/Invertebrate Zoology, [SDV.GEN.GPO] Life Sciences [q-bio]/Genetics/Populations and Evolution [q-bio.PE], Hybridization, Genetic, Insect
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