蜜蜂欺凌其他传粉昆虫，科学家发现

英国Anglia Ruskin University研究团队发现，蜜蜂通过驱赶和骚扰等攻击性行为，积极与其他传粉昆虫竞争花蜜资源。1研究人员在剑桥周围5个地点进行了为期2年的观察，发现蜜蜂种群数量增加与野生传粉者（包括大黄蜂、独栖蜂和食蚜蝇）数量减少存在明显关联。1

具体而言，bramble花上蜜蜂密度翻倍时，大黄蜂数量下降了14%；在ivy花上，高蜜蜂数量与独栖蜂和食蚜蝇数量减少相关联。1在观察到的相互作用中，竞争压力表现明显。研究发现，在28%的bramble相互作用和36%的ivy相互作用中，其他传粉者主动避开蜜蜂。1更值得关注的是，蜜蜂至少在20%的遭遇中通过物理方式推开或驱赶竞争昆虫。1

研究警告称，气温上升和蜜蜂种群扩大可能加剧这种竞争压力，进一步威胁野生传粉者。1英国注册养蜂人数从2010年的19,000人激增至去年的47,000人，温度每上升12°C，蜜蜂离开蜂巢的数量就增加十倍，这些因素都可能加剧问题的恶化。1这项研究已发表在《Ecological Entomology》期刊。1

Researchers at Anglia Ruskin University in the UK have discovered that honey bees aggressively compete with other pollinating insects for nectar through physical harassment and exclusion tactics.1 Over two years of observation at five sites around Cambridge, scientists found a correlation between increased honey bee density and declining populations of wild pollinators, including bumblebees, solitary bees, and hoverflies.1 When honey bee numbers on bramble flowers doubled, bumblebee populations decreased by 14 percent.1 Similarly, high honey bee concentrations on ivy flowers were associated with reduced numbers of solitary bees and hoverflies.1

The aggressive behavior is evident in direct interactions between species.1 In 28 percent of encounters on bramble flowers and 36 percent on ivy flowers, other pollinators actively avoided honey bees.1 In at least 20 percent of confrontations that honey bees won, they physically pushed away or drove off competing insects.1 Researchers warn that rising temperatures and expanding honey bee populations could intensify competitive pressure, threatening wild pollinator survival.1 For every 12-degree Celsius increase in temperature, the number of honey bees leaving their hives increases tenfold.1 The registered beekeeper population in Britain has grown from 19,000 in 2010 to 47,000 in the past year, potentially contributing to increased competition.1 The findings were published in the journal Ecological Entomology.1