Comparing biological characteristics of the newly and Apis mellifera bees into Vietnam

Abstract

The aim of this study was to compare the biological characteristics of newly introduced Apis mellifera bees with those previously introduced in 1960. New introduced Apis mellifera bees showed low inbreeding percentage and high honey productivity. However, they exhibited high disease infections and low egg-laying capacity of queens, consequently, resulting in low worker population. 3-4 years after introduction, some biological characteristics of the descendants of newly introduced bees were improved compared with their first generation, but the inbreeding coefficient slightly increased under the permitting population threshold.