美国蜂群衰退现象的新进展(二)
摘要
◆蜂群衰竭失调的征兆
蜂群衰竭失调的一个重要征兆是成蜂数量骤减而无任何死蜂的累积。成蜂不归巢，离开幼蜂和蜂王甚至聚集成小簇蜂群。这种情形之所以不典型是因为蜜蜂是社会性的群居昆虫，一个复杂而有组织的群体。不能归巢被视为是极不寻常的，缺乏大量死蜂使得分析蜂群失调原因变得十分困难，而且缺乏证据表明蜂巢也可能被袭击过。在大量丢失的蜂群里，数量不足的工蜂仍继续哺育幼虫，巢内由年轻工蜂担当。虽然蜂王还在，似乎很健康并能照常产卵，但剩余的蜂群很难去吃所饲喂的食物，采集活动大大减少。
出处
《中国蜂业》
2008年第2期51-52,共2页
Apiculture of China
参考文献13
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