The distribution of H bee and L bee uncapping activities among the 105 uncapped brood cells in mixed L/H bee groups.

We used the relative proportion of H to L bee acts in the mixed groups ( = 0.26) as an estimate of the probability of H bees performing an uncapping activity relative to L bee uncapping activity among the 105 uncapped cells. We used the binomial distribution to estimate the expected number of cells at which 0, 1, 2, 3 or 4 uncapping acts would be expected from H bees in relation to L bee acts. On average, four bees in the mixed groups engaged in the uncapping task at a single cell. The observed and expected numbers of cells in the different categories were compared with a χ2-test (df = 4; P = 0.12). Power for this test is 0.99 for ω = 0.5.

我们以混合组内H型蜜蜂与L型蜜蜂行为的相对占比（=0.26），对105个已解封巢房中，H型蜜蜂相较于L型蜜蜂开展封盖清除行为的概率进行估计。我们采用二项分布（binomial distribution），估算出在上述巢房中，相较于L型蜜蜂的封盖清除行为，H型蜜蜂分别实施0、1、2、3或4次封盖清除行为的预期巢房数量。混合组中，平均每个巢房会有4只蜜蜂参与封盖清除任务。我们通过卡方检验（χ²-test，df=4；P=0.12），对不同类别下的观测巢房数与预期巢房数进行比较。当效应量ω=0.5时，该检验的统计功效为0.99。