科学家借助高速摄像技术首次直接观测了蜜蜂蜇针的工作机制。1研究发现，蜜蜂蜇针具有独特的双活塞泵结构，由中心针、主泵室以及两个尖端的刺相互锁定组成。1这些刺尖来回滑动，使蜇针能够像锯一样工作。1
蜜蜂蜇针最引人注目的特性在于其持久性。1当工蜂蜇刺目标后飞离，蜇针会留在被蜇者体内，但其泵送毒液的工作并不停止。1即使蜇针与蜂体分离，它仍能继续刺入组织并向体内泵入毒液，这一现象被称为"自切"（autotomy）。1这项研究已发表在《美国国家科学院院刊》上。1
Scientists have used high-speed video technology to directly observe the mechanism of how honey bee stingers deliver venom for the first time.1 The research demonstrates that bee stingers operate as dual-piston pumps, featuring three main interlocking components: a central needle called a stylet that forms the primary pump chamber, and two pointed lancets at the tip that slide back and forth.1 This pumping action allows the stinger to continue injecting venom into tissue even after the bee has flown away and left the stinger behind, a phenomenon known as autotomy.1
The findings reveal a remarkable adaptation of the honeybee (Apis mellifera), whose worker bees characteristically abandon their stingers embedded in their targets after delivering a sting.1 Despite the stinger's separation from the bee's body, the dual-piston mechanism continues to function, pressing deeper into the victim's tissue and delivering additional venom.1 The research has been published in the Proceedings of the National Academy of Sciences.1
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