ArticleMolecular ecology2025
Admixture Increases Genetic Diversity and Adaptive Potential in Australasian Killer Whales.
Article in Molecular ecology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- The paradoxical extinction: Exploring signatures of assortative mating as a possible mechanism that maintains canonical Red Wolf genetic ancestry in the American Gulf Coast canids.The Journal of heredity · 2026Article
- Perspective: The Future of the Southern Resident Killer Whales Depends on Interactions With Other Killer Whale Populations.Ecology and evolution · 2026Article
- Genomic identification of direct seeding and evolutionary lineages by combining heterogeneous genomic resources.BMC biology · 2025Article
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Authors and funding
8 authors.
Funding
Abstract
Admixture is the exchange of genetic variation between differentiated demes, resulting in ancestry within a population coalescing in multiple ancestral source populations. Low-latitude killer whales (Orcinus orca) populations typically have higher genetic diversity than those in more densely populated, high productivity and high-latitude regions. This has been hypothesized to be due to episodic admixture between populations with distinct genetic backgrounds. We test this hypothesis by estimating variation in local ancestry of whole genome sequences from three genetically differentiated, low-latitude killer whale populations and comparing them to global genetic variation. We find 'Antarctic-like' ancestry tracts in the genomes of southwestern Australia (SWA) population including recent (within the last 2-4 generations) admixture. Admixed individuals had, on average, shorter and fewer runs of homozygosity than unadmixed individuals and increased effective population size (N
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