Whole-genome resequencing provides insights into the population structure and domestication signatures of ducks in eastern China

Abstract Background Duck is an ancient domesticated animal with high economic value, used for its meat, eggs, and feathers. However, the origin of indigenous Chinese ducks remains elusive. To address this question, we performed whole-genome resequencing to first explore genetic relationship among variants these domestic their potential wild ancestors in eastern China, as well understand how genomes were shaped by different natural artificial selective pressures. Results Here, report 60 from spot-billed ( Anas zonorhyncha) , mallards (Anas platyrhnchos ), Fenghua ducks, Shaoxing Shanma Cherry Valley Pekin China (ten each population) at average effective sequencing depth ~ 6× per individual. The results population demographic analysis revealed a deep phylogenetic split between (Chinese mallards) ducks. By applying sweep analysis, identified that several candidate genes, important pathways GO categories associated selection functionally related cellular adhesion, type 2 diabetes, lipid metabolism, cell cycle, liver proliferation, muscle functioning Conclusion Genetic structure showed close mallards, which supported contributed breeding During long history selection, have developed complex biological adaptation captivity.