Whole-genome analyses provide no evidence for dog introgression in Fennoscandian wolf populations.

摘要: Hybridization and admixture can threaten the genetic integrity of populations be particular concern to endangered species. between grey wolves dogs has been documented in many wolf worldwide is a prominent example human-mediated hybridization domesticated species its wild relative. We analysed whole-genome sequences from >200 >100 study Fennoscandian populations. A principal component analysis variation showed that were well-separated, without evidence for introgression. Analyses local ancestry revealed had <1% mixed ancestry, levels comparable degree dogs, likely not resulting recent wolf-dog hybridization. also show founders Scandinavian population genetically inseparable Finnish Russian Karelian wolves, pointing at geographical origin contemporary wolves. Moreover, we found Scandinavian-born animals among sampled Finland, demonstrating bidirectional gene flow Peninsula eastern countries. The low incidence Fennoscandia may explained by fact feral are rare this part Europe careful monitoring management act remove hybrids before they backcross into