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Domestic Dog Introgression in Australian Dingoes: Environmental Drivers and Evolutionary Consequences

Identification

Clé publique

radar:r-524b753f834849ec85b80911a785fd53

Auteurs

Carolina Osuna‐Mascaró · Kylie M. Cairns · Karolina Doan · Alejandro Flores‐Manzanero · Bradley J. Nesbitt · Thomas M. Newsome · Małgorzata Pilot

Année déclarée

2026

Langue déclarée

en

Type source

article

Première détection

2026-11-14T01:59:24.105686+00:00

Dernière observation des métadonnées

2026-11-14T01:59:24.105686+00:00

Dernière vérification HTTP

Non effectuée

Institutions déclarées par la source

University of Gdańsk · UNSW Sydney · Museum and Institute of Zoology · Polish Academy of Sciences · Universidad Autónoma de Tlaxcala · University of New England · The University of Sydney

Pays d’affiliation déclarés

AU · MX · PL

Résumé documentaire — langue originale

Introgressive hybridisation between wild and domestic animals is a widespread phenomenon with important implications for genetic diversity, local adaptation, and conservation management. The causes and consequences of this process are poorly understood. In Australia, hybridisation between dingoes and domestic dogs presents a dual conservation challenge, threatening the genetic integrity of dingoes while allowing potential adaptive introgression. To investigate the environmental drivers of this process, we analysed high-density SNP array data in 390 dingoes and 396 domestic dogs. Dingo populations showed regional genetic structure and were clearly differentiated from domestic dogs. Using local ancestry inference and genome-environment association analyses, we found low levels of dog introgression in dingoes from remote areas in Central and Western Australia, and moderate levels in Eastern and Southern populations. Climatic variables (maximum temperature of the warmest month, mean temperature of the driest quarter) and the Human Footprint Index (reflecting density of human populations and environmental modifications) were significant predictors of introgression. We identified four genomic regions with overrepresented dog ancestry, including a large introgressed block on chromosome 27, which contained an olfactory receptor gene showing signatures of positive selection, suggesting adaptive introgression. In addition, a chromosomal inversion previously described in dogs and absent in dingoes was initially identified as an introgressed block. We also detected eight genomic regions nearly free of dog ancestry, suggesting purifying selection against maladaptive variants. Together, these results highlight the complex interplay between introgression, human influence, and local adaptation in dingoes, offering valuable insights for conserving the evolutionary potential of this apex predator in increasingly modified landscapes.

Identifiants

OPENALEX

https://openalex.org/W7141299579

DOI

10.1111/mec.70320

PMID

https://pubmed.ncbi.nlm.nih.gov/41894533

Repères documentaires

Famille documentaire

article

Types déclarés par les sources

article

Éditeurs

Wiley

Les mentions d’entités ne constituent pas une preuve de reconnaissance juridique. La juridiction étudiée est distincte du pays d’affiliation des auteurs.

Sources

OpenAlex · Document 1

• Document · https://doi.org/10.1111/mec.70320

Statut documentaire

Pertinence à examiner

Bibliothèque

Cette identité n’est pas encore intégrée à la Bibliothèque juridique.