华盛顿特区与蚊子作斗争——二级警报

31-07-2026 07:00

当局在华盛顿特区释放了约60万只雄蚊，以减少蚊虫数量。这个想法听起来有些奇怪，但效果很好。

雄蚊不会叮咬人类，也不会吸食血液。这些特殊的雄蚊携带一种名为沃尔巴克氏菌（Wolbachia）的细菌。当它们与雌蚊交配时，受精卵无法孵化，因此不会产生新的蚊子。气候变化导致城市气温升高，这使得蚊子的寿命延长，并向人类传播疾病。专家表示，这种新方法对人类、鸟类和鱼类都是安全的，不会对自然环境或其他动物造成伤害。

短短几周内，该项目就能迅速减少蚊子数量，让人们在夏天尽情享受户外活动。

您可以在“第3级”栏目中观看原视频。

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携带沃尔巴克氏体的雄蚊是如何阻止新蚊子诞生的？

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