Mass-migrating bumblebees: an overlooked phenomenon with potential far-reaching implications for bumblebee conservation

1. Bumblebees are one of the most commonly studied pollinators, but they are declining in large parts of their distribution. Whether bumblebees can cope with anthropogenic disturbances such as climate change and habitat loss depends largely on their dispersal capacity. While bumblebee queen dispersal is estimated to be only a few kilometres, bird migration sites have documented mass-migration events with peak migration of 70 bumblebee queens per minute, indicating that bumblebees can migrate over larger distances than previously thought. 2. The open-access database trektellen.org contains ten daily counts of >1000 migrating queens past single points in the Netherlands, and one in the UK (total bumblebee records 65,430; range 1-11,142 individuals), mostly in early spring. Such mass-migration events are poorly documented in the scientific literature, and usually when describing migrations of other insects such as syrphids and social wasps. 3. Most common European bumblebee species were...

1. 熊蜂（Bumblebees）是当前研究最为广泛的传粉媒介之一，但其分布区内的多个区域种群正持续衰减。熊蜂能否应对气候变化、生境丧失等人为干扰，很大程度上取决于其扩散能力。尽管此前估算熊蜂蜂王的扩散距离仅为数公里，但鸟类迁徙监测点记录到了大规模迁飞事件，其迁飞峰值可达每分钟70只熊蜂蜂王，这表明熊蜂的迁飞距离远超此前的学术认知。
2. 开放获取数据库trektellen.org收录了荷兰境内单点监测点的10组每日统计数据，每组均记录了超1000只迁飞蜂王，此外还包含英国境内的1组相关数据（熊蜂记录总条目为65430条，单组统计个体数范围为1至11142只），此类数据大多采集于早春时节。目前这类大规模迁飞事件在科学文献中鲜有记载，现有相关描述大多仅聚焦于食蚜蝇、社会性胡蜂等其他昆虫的迁飞行为。
3. 欧洲多数常见熊蜂物种已……