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Cold Temperature and Humidity for Diapauses-Break of the Bumblebee Bombus terrestris
- 언어ENG
- URLhttps://db.koreascholar.com/Article/Detail/289597
Bumblebees are widely used to pollinate various crops, especially tomato, in greenhouses and fields. An artificial hibernation is essential for year-round rearing of the bumblebee that undergoes one generation per year. Here, we investigated whether a cold temperature and humidity affect artificial hibernation of the bumblebee queen Bombus terrestris. In cold temperature regimes of 0℃, 2.5℃, 5℃, 7.5℃ or 12.5℃ under a constant humidity 70% over, the queens stored at 2.5℃ was the best performance in survival rate, which was 74.0% in one month, 67.0% in two months, 60.0% in three months, 46.0% in 4 months, 33.0% in 5 months, and 24.0% in 6 months and lowed in the order of 0℃, 5℃, 7.5℃ and 12.5℃. And also, the colony developmental characteristics after diapause was 1.2-1.5 fold higher than those at queens stored at 5℃. In terms of cold humidity, the queens hibernated at 70% under 2.5℃ was the best performance in survival rate, which was 93.3±3.4% in one month, 83.3±0.0% in two months, 76.7±0.0% in 3 months and 36.7±12.1% in 5 months and lowed in the order of 50% and 90%. The rates of oviposition, colony foundation and progeny-queen production of queens hibernated at 70% were 80.8%, 30.8% and 30.8%, respectively. These values correspond to 1.7-3.3 fold that at queens stored at 50%. Therefore, 2.5℃ and 70% R.H. were the favorable cold temperature and humidity conditions for diapauses-break of B. terrestirs queen.
