Methods of wintering bee colonies in the apiary infected with Nosema ceranae

The aim of the research was to investigate the bee colonies wintering method influence on the degree of lesion with nosema pathogen. To achieve this goal we have solved the following problems: after autumn audit the bee colonies were divided into two groups; we selected and investi-gated samples of bees from the bee colonies ;during the spring audit, the degree of contamina-tion of bee nests was assessed at five-point sys-tem. The analysis of research results shows that when bee colonies are wintering in the wild, under the snow, cleanness of their nests rates by 2 or 3 points for the majority of (81.4 %), 7.4 % of infected colonies by 5 points and 11.1 % by 4 points. Win-tering in the semi-subterranean hole called winterer preserves the cleanness of the nest in 4 and 3 points (68.1 %). The number of bee colonies, with spring audit grade in 5 points, increasing by 17.6 % than in wild wintering. In turn, the number of colo-nies with a score of 2 was less by 30.7 %. The re-sults showed significant influence (P