排序方式: 共有9条查询结果,搜索用时 0 毫秒
1
1.
Giant honeybees (Apis dorsata) nest in the open and have therefore evolved a variety of defence strategies. Against predatory wasps, they produce highly
coordinated Mexican wavelike cascades termed ‘shimmering’, whereby hundreds of bees flip their abdomens upwards. Although
it is well known that shimmering commences at distinct spots on the nest surface, it is still unclear how shimmering is generated.
In this study, colonies were exposed to living tethered wasps that were moved in front of the experimental nest. Temporal
and spatial patterns of shimmering were investigated in and after the presence of the wasp. The numbers and locations of bees
that participated in the shimmering were assessed, and those bees that triggered the waves were identified. The findings reveal
that the position of identified trigger cohorts did not reflect the experimental path of the tethered wasp. Instead, the trigger
centres were primarily arranged in the close periphery of the mouth zone of the nest, around those parts where the main locomotory
activity occurs. This favours the ‘special-agents’ hypothesis that suggest that groups of specialized bees initiate the shimmering. 相似文献
2.
The Science of Nature - 相似文献
3.
4.
5.
6.
7.
8.
9.
1