Abstract
The post-hibernated queens of Bombus hypocrita saporoensis were collected in Jeongseon, Korea to investigate their ecological characteristics and reared under the laboratory conditions; 27℃ 65% R.H., and darkness. The average weight of collected queens was 0.87±0.14g and 0.8g class was most abundant (34.7%) among eight weight classes. The rates of colony initiation, colony foundation and progeny-queen production were 76.3%, 60.0% and 42.5%, respectively. The durations up to colony initiation and colony foundation were 12.0±6.7 days and 49.3±2.4 days, respectively. The duration up to first worker, male and queen emergence were 22.2±3.0 days, 63.4±6.5 days and 63.5±8.7 days, respectively. The number of progenies was 108.5±26.0 workers, 186.7±70.7 males and 39.1±30.3 queens. The longevity of colony founded queen was 90.2±19.9 days whereas that of non-colonized queen was 35.9±30.3 days. Copulation time was 29.5±9.6 min. The number of eggs per egg cell laid new queen was 9.3±2.3 grains. An egg shaped as banana and it’s size was 1.12±0.10㎜ in a width, 3.54±0.16㎜ in a length and 2.26±0.34㎎ in a weight.
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