In addition, ten candidate genes (Cmip, Tmem132b, Mphosph6, Smg7, Lyst, Zbtb37, Serpinc1, Npl, Tmem132c and Plcg2) ranking within the top 10 FST values with log2 (θπ ratio (θπ, wild duck/θπ, domestic duck) ≥ 0.84 were functionally involved in cellular adhesion function, type 2 diabetes, lipid metabolism, cell cycle, liver cell proliferation and muscle functioning [31–36] (Table 1). Here, NPL is linked to type 2 diabetes mellitus.