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Reduced Genetic Load and Inbreeding in Reintroduced African Wild Dogs Reflect the Benefits of Admixture
L Tensen1,2, X Wang3, J Watermeyer4
1Applied Zoology and Nature Conservation, Zoological Institute and Museum, University of Greifswald, Greifswald, Germany.
Molecular Ecology
|June 12, 2026
Summary
Conservation translocations are vital for African wild dogs (Lycaon pictus). Reintroduced populations show higher genetic diversity and resilience, offering hope for managing threatened species through admixture.
Area of Science:
- Conservation biology
- Genomics
- Population genetics
Background:
- African wild dog (Lycaon pictus) populations have drastically declined due to anthropogenic pressures.
- Conservation translocations are crucial for preventing local extinctions and establishing viable metapopulations.
- South Africa's wild dog population, once near extinction, now serves as a donor for repopulating other regions.
Purpose of the Study:
- To quantify the genomic effects of founder events, population isolation, and conservation translocations on African wild dogs.
- To reconstruct demographic history and assess genetic variation in different wild dog populations.
- To provide guidance for managing threatened species by understanding genetic resilience.
Main Methods:
- Harvesting and analyzing 30 whole genomes from wild dogs in Kruger National Park, private reserves, and outside protected areas.
- Conducting demographic reconstructions to infer historical population sizes and decline patterns.
- Analyzing genetic load and runs of homozygosity (ROHs) to assess inbreeding and genetic diversity.
Main Results:
- Historical populations were large but declined significantly over millennia, with a sharp collapse ~2-0.8 kya.
- The Kruger population exhibits higher genetic load and ROHs, indicating inbreeding.
- Reintroduced populations in private reserves show higher genetic diversity, lower genetic load, and genetic affinity to a Kenyan individual, suggesting historical panmixia.
Conclusions:
- Genetic variation in African wild dogs is influenced by both demographic history and inbreeding.
- Reconnecting isolated populations and promoting admixture can restore genetic diversity and evolutionary potential.
- Population admixture offers a viable strategy for enhancing the genetic resilience of threatened species.
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