Features of Food, Basic Food and Substitute in the Diet of American Mink (Neovison vison Schreber, 1777) in the Volga Crowns
The evaluation of nutrition components of the American mink (Neovison vison Schreber, 1777) in the Volga crowns between 2005 and 2011. For complex description of the criteria were used occurrence (В, %) and biomass (Б, %). Established the basic and substitute food in the diet of predator, we calculated trophic niche and its degree of overlap in different years.