Temperatures of five brood cells (indexed from a to e) in relation to the number of long-lasting cell visitors (Nvisitors) in the adjacent cells (setup D)
. | . | Nvisitors . | . | . | . | . | . | . | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cell . | Total time . | 0 . | 1 . | 2 . | 3 . | 4 . | 5 . | 6 . | ||||||
| a | 100% | 0% | 21.9% | 51.3% | 25.6% | 1.3% | 0% | — | ||||||
| 35.1±0.3°C | — | 34.9±0.2°C | 35.0±0.2°C | 35.4±0.2°C | 35.4±0.0°C | — | — | |||||||
| b | 100% | 0% | 12.0% | 34.3% | 35.7% | 15.0% | 3.1% | 0% | ||||||
| 35.0±0.5°C | — | 34.2±0.2°C | 34.8±0.3°C | 35.3±0.3°C | 35.7±0.1°C | 35.8±0.1°C | — | |||||||
| c | 100% | 3.6% | 20.8% | 39.4% | 22.2% | 6.4% | 7.5% | 0% | ||||||
| 34.2±0.4°C | 33.9±0.1°C | 34.0±0.3°C | 34.2±0.4°C | 34.2±0.3°C | 34.2±0.3°C | 34.5±0.4°C | — | |||||||
| d | 100% | 14.7% | 13.3% | 46.8% | 21.4% | 3.7% | — | — | ||||||
| 34.2±0.4°C | 33.8±0.2°C | 33.9±0.4°C | 34.2±0.4°C | 34.4±0.3°C | 35.0±0.2°C | — | — | |||||||
| e | 100% | 5.2% | 24.4% | 55.6% | 13.4% | 1.4% | 0% | 0% | ||||||
| 33.6±0.6°C | 32.9±0.1°C | 33.3±0.3°C | 33.7±0.5°C | 34.3±0.3°C | 34.9±0.0°C | — | — | |||||||
. | . | Nvisitors . | . | . | . | . | . | . | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cell . | Total time . | 0 . | 1 . | 2 . | 3 . | 4 . | 5 . | 6 . | ||||||
| a | 100% | 0% | 21.9% | 51.3% | 25.6% | 1.3% | 0% | — | ||||||
| 35.1±0.3°C | — | 34.9±0.2°C | 35.0±0.2°C | 35.4±0.2°C | 35.4±0.0°C | — | — | |||||||
| b | 100% | 0% | 12.0% | 34.3% | 35.7% | 15.0% | 3.1% | 0% | ||||||
| 35.0±0.5°C | — | 34.2±0.2°C | 34.8±0.3°C | 35.3±0.3°C | 35.7±0.1°C | 35.8±0.1°C | — | |||||||
| c | 100% | 3.6% | 20.8% | 39.4% | 22.2% | 6.4% | 7.5% | 0% | ||||||
| 34.2±0.4°C | 33.9±0.1°C | 34.0±0.3°C | 34.2±0.4°C | 34.2±0.3°C | 34.2±0.3°C | 34.5±0.4°C | — | |||||||
| d | 100% | 14.7% | 13.3% | 46.8% | 21.4% | 3.7% | — | — | ||||||
| 34.2±0.4°C | 33.8±0.2°C | 33.9±0.4°C | 34.2±0.4°C | 34.4±0.3°C | 35.0±0.2°C | — | — | |||||||
| e | 100% | 5.2% | 24.4% | 55.6% | 13.4% | 1.4% | 0% | 0% | ||||||
| 33.6±0.6°C | 32.9±0.1°C | 33.3±0.3°C | 33.7±0.5°C | 34.3±0.3°C | 34.9±0.0°C | — | — | |||||||
The number of empty cells adjacent to a certain sealed brood cell was 6 for cells b, c and e. Cells a and d were surrounded by 5 or 4 empty cells and 1 or 2 non-visitable sealed brood cells, respectively. The % values are the times during which a certain number of cell visitors were present (% of the total observation time of 180 min). Brood cell temperatures (mean ± S.D.) are given separately for elongated periods (>1.5 min) with a constant number of Nvisitors and for the total observation time, irrespective of Nvisitors. The increase of brood temperature with the number of cell visitors was significant (Jonckheere's trend test, P<0.001 for each of the five brood cells). Sample sizes of the classified temperatures (0—6) are N=506, 447 and 448 (cells a,b and c) and N=7672 and 8686 values (cells d and e; see text for the sampling rates), respectively. Thive=32.3±0.6°C(air temperature in the brood nest); Troom=26.0±0.7°C.