ArticleProceedings of the National Academy of Sciences of the United States of America2022
Uncovering the enigmatic evolution of bears in greater depth: The hybrid origin of the Asiatic black bear.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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18 citing papers in PubMed, 38 citations in OpenAlex.
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- Phylogenetic discordance arises from incomplete lineage sorting and pre-speciation introgression during erosion-mediated radiation of Asian warty newts.Zoological research · 2026Article
- Incomplete lineage sorting shaped mixed traits during a colobine primate radiation.Proceedings of the National Academy of Sciences of the United States of America · 2026Article
- The hybridization analysis of pedigree: whole-genome re-sequencing reveals genomics characterization and genetic basis of growth trait of Qinchuan black pigs.BMC genomics · 2026Article
- Documenting homoploid hybrid speciation.Molecular ecology · 2025Review
- Chromosome-scale Genomes Show Rapid Diversification and Ancient Gene Flow Among Bear Species.Genome biology and evolution · 2025Article
- Spatiotemporal Dynamics of Non-Ecological Speciation in Rubyspot Damselflies (Hetaerina spp.).Molecular ecology · 2025Article
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- Deep Ancestral Introgressions between Ovine Species Shape Sheep Genomes via Argali-Mediated Gene Flow.Molecular biology and evolution · 2024Article
- Late Pleistocene polar bear genomes reveal the timing of allele fixation in key genes associated with Arctic adaptation.BMC genomics · 2024Article
- A most aggressive bear: Safari videos document sloth bear defense against tiger predation.Ecology and evolution · 2024Article
- Deep genome skimming reveals the hybrid origin ofPlant diversity · 2024Article
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- Genomic signatures suggesting adaptation to ocean acidification in a coral holobiont from volcanic COCommunications biology · 2023Article
- Comparative genomics reveals the hybrid origin of a macaque group.Science advances · 2023Article
- Article
- Uncovering the enigmatic evolution of bears in greater depth: The hybrid origin of the Asiatic black bear.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
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Authors and funding
8 authors at 4 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Bears are fascinating mammals because of their complex pattern of speciation and rapid evolution of distinct phenotypes. Interspecific hybridization has been common and has shaped the complex evolutionary history of bears. In this study, based on the largest population-level genomic dataset to date involving all Ursinae species and recently developed methods for detecting hybrid speciation, we provide explicit evidence for the hybrid origin of Asiatic black bears, which arose through historical hybridization between the ancestor of polar bear/brown bear/American black bears and the ancestor of sun bear/sloth bears. This was inferred to have occurred soon after the divergence of the two parental lineages in Eurasia due to climate-driven population expansion and dispersal. In addition, we found that the intermediate body size of this hybrid species arose from its combination of relevant genes derived from two parental lineages of contrasting sizes. This and alternate fixation of numerous other loci that had diverged between parental lineages may have initiated the reproductive isolation of the Asiatic black bear from its two parents. Our study sheds further light on the evolutionary history of bears and documents the importance of hybridization in new species formation and phenotypic evolution in mammals.
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