In order to select the superior lines of bumblebee queens(Bombus terrestris) in oviposition and colony development which has some characteristics of diapause with adult type, undiapaused bumblebee queens of 3rd generation were surveyed in room condition compared to queen treated with CO2 and artificial hibernation. Oviposition rate and preovipositional days of undiapaused queens was lower in efficacy with 46.7% and shows same trend in preovipositional days with 52.8 days than the other treatment with CO2 anesthesia and artificial hibernation with 60.0%, 86.7%, 26.1 days and 26.6 days respectively. In continuous experiment, we also surveyed ovipositional characteristic and colony development of three types of queens emergenced from undiapaused queens and treated queens with CO2 and artificial hibernation. Although undiapaused queens in 1st generation were more effective in the same condition than treated queens, but the undiapaused queens of 3rd generation emergenced from undiapaused queens of 2nd generation were very low trend in all checkpoints compared with treated queens in same generation. This results was shown that the queens treated with CO2 or artificial hibernation need to be in successive mass rearing continuously in the year round.

• In Gyun Park(Division of Insect Resources, National Institute of Agricultural Science and Technology)
• Hyung Joo Yoon(Division of Insect Resources, National Institute of Agricultural Science and Technology)
• Sang Beom Lee(Division of Insect Resources, National Institute of Agricultural Science and Technology)
• Kyeong Yong Lee(Division of Insect Resources, National Institute of Agricultural Science and Technology)
• Sun Joo Jang(Division of Insect Resources, National Institute of Agricultural Science and Technology)
• Young Cheol Choi(Division of Insect Resources, National Institute of Agricultural Science and Technology)