"Temperature and humidity favorable for colony development of the indoor-reared bumblebee, Bombus ignitus."
2002
"Yoon, H.J. (National Inst. of Agricultural Science and Technology, Suwon (Korea R.)) | Kim, S.E. | Kim, Y.S. "
"The optimum temperature and humidity for the indoor-rearing of Bombus ignitus were investigated. The experimental regimes of temperature and humidity were defined as 23degC, 27degC and 30degC under a constant humidity of 65% R.H., and 50%, 65% and 80% R.H. under a constant temperature of 27degC, respectively. Among the temperature regimes, 27degC-rearing showed the best results, i.e., the rates of colony initiation, colony foundation and progeny-queen production at 27degC were 83%, 63% and 46%, respectively, which corresponded to 2.2-5.5 times the respective values at other temperature regimes. The numbers of progeny produced at 27degC-rearing, 164=+-33 workers, 553 =+-174 males and 33 =+-48 queens were also higher, corresponding to 21.8 and 1.5 times those at 23degC and 30degC, respectively. In terms of humidity, 65% R.H. was favorable for big colony formation. Under the same humidity, the rates of colony initiation, colony foundation and progeny-queen production were 85%, 70% and 50%, respectively, and the number of progenies reached 180=+-30 workers, 578=+-179 males and 35=+-38 queens. Therefore, 27degC and 65% R.H. were determined to be the favorable environmental conditions for colony development of B. ignitus in indoor rearing."
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