Schmid-hempel P, Stauffer Hp
Experimental Ecology, ETH Zürich
Anim Behav. 1998 Apr;55(4):819-25. doi: 10.1006/anbe.1997.0661.
In a field experiment, we tested whether workers of bumblebees, Bombus pascuorum and B. humilis, parasitized by larvae of conopid flies, Physocephala rufipes and Sicus ferrugineus, differ in their flower choice from unparasitized ones. We collected workers at random in the field and immediately tested them in experimental arenas that offered the choice of a reference plant (red clover, Trifolium pratense) versus a test plant (from five species). The choices of 396 workers were analysed with logistic regression models (logit analysis). We performed all tests in the same field and at the same time where the workers were foraging naturally. On average, the parasitized bees were less likely to visit the reference plant. In addition, they were more likely to switch plant species even after the first visit in the experimental sequence. Copyright 1998 The Association for the Study of Animal Behaviour. Copyright 1998 The Association for the Study of Animal Behaviour.
在一项野外实验中，我们测试了被食虫虻幼虫（红头食虫虻和铁锈色食虫虻）寄生的帕斯夸熊蜂和谦逊熊蜂的工蜂在花朵选择上是否与未被寄生的工蜂有所不同。我们在野外随机收集工蜂，并立即在实验场地对它们进行测试，实验场地提供了一种参考植物（红三叶草，车轴草属）和一种测试植物（来自五个物种）供其选择。使用逻辑回归模型（对数分析）对396只工蜂的选择进行了分析。我们在工蜂自然觅食的同一地点、同一时间进行了所有测试。平均而言，被寄生的蜜蜂访问参考植物的可能性较小。此外，即使在实验过程的首次访问之后，它们也更有可能更换植物种类。版权所有1998动物行为研究协会。版权所有1998动物行为研究协会。
