Table 2.

Thorax temperatures (Tth) of individually marked bees on the surface of a capped brood cell, before and after visits to empty cells (setup A)

Bee ID Observation time (min)Tth on comb surface (°C) (N) Duration of cell visit (min)Tth(entry) (°C)Tth(exit) (°C)Tth)net (°C)
50532.836.6±2.1 (102)10.637.738.7+1.0
6.342.540.6-1.9
51489.536.5±1.5 (231)2.337.737.70.0
2.839.637.7-1.9
13.138.739.0+0.3
16.539.339.7+0.4
24.439.738.8-0.9
68555.533.7±1.4 (122)13.935.037.3+2.3
5.137.338.5+1.2
9.138.937.9-1.0
6.537.437.6+0.2
11918.633.0±0.2 (48)----
122516.834.1±0.5 (30)>7.7-35.4-
3.635.434.4-1.0
1.234.134.3+0.2
125323.234.8±1.3 (46)10.134.136.0+1.9
4.035.136.9+1.8
2.536.437.6+1.2
1.037.137.0-0.1
24428.333.0±0.4 (58)----
263635.136.3±3.3 (149)14.241.640.3-1.3
268657.334.0±1.3 (305)12.635.536.5+1.0
27214.232.2±1.0 (28)----
27418.432.6±1.4 (51)-37.5--
274954.235.6±1.7 (282)13.434.338.4+4.1
0.737.837.2-0.6
304962.535.7±1.7 (268)30.839.437.4-2.0
308390.938.1±2.5 (149)32.942.538.1-4.4
6.840.139.3-0.8
3.639.140.2+1.1
5.541.040.9-0.1
19.639.339.7+0.4
-38.1--
309618.334.6±1.0 (107)----
309950.237.8±1.4 (231)6.636.840.1+3.3
3.239.139.0-0.1
4.040.240.6+0.4
3.939.940.2+0.3
311920.533.9±0.7 (33)15.634.235.0+0.8
322533.138.1±2.2 (161)4.737.236.2-1.0
6.140.938.0-2.9
334769.535.5±1.4 (287)10.037.138.0+0.9
14.135.338.8+3.5
773841.434.4±1.5 (46)>6.8-36.8-
16.636.835.7-1.1
11.335.437.7+2.3
  • Values of Tth are means ± S.D. (N). N, number of measurements per individual. Observation time includes the time on the brood comb surface and the time inside cells.