20200605 同步发光萤火虫照亮了大烟山国家公园中的森林 必应壁纸

大烟山国家公园 同步发光萤火虫照亮了大烟山国家公园中的森林 同步发光萤火虫照亮了大烟山国家公园中的森林

每年的5月下旬到6月中旬，同步的萤火虫会在大烟山国家公园的森林中汇聚成波光粼粼的，有节奏的灯光秀。作为两周交配展示的一部分，雌虫会与附近的雄虫同步闪光，从而每隔几秒钟就会有一波光波穿过树林。北美大烟山国家公园（Photinus carolinus）仅是至少19种萤火虫中的一种，而在地球上其他一些地方，尤其是东南亚，也可以找到同步萤火虫。

每种萤火虫都有独特的闪光模式，可以帮助雄性和雌性彼此识别。在大多数这样的物种中，雄性会飞翔并闪光，而雌性通常会保持静止并以自己的闪光来回应。尽管某些假设涉及饮食，社交互动和海拔高度，但尚不清楚为什么某些萤火虫会同步闪光。不管他们为什么这样做，闪电般的闪电闪烁都是一个神奇的景象，而且有时我们都可以使用一点魔法。

原文:

Every year between late May and mid-June, synchronous fireflies gather into a sparkling, rhythmic lightshow in the forests of Great Smoky Mountains National Park. As part of their 2-week mating display, the female lighting bugs synchronize their flashes with nearby males so that every few seconds waves of light ripple through the woods. While Photinus carolinus is only one of at least 19 species of fireflies that live in Great Smoky Mountains National Park, synchronous fireflies can be found in a few other places on Earth as well, particularly in Southeast Asia.Each species of firefly has a characteristic flash pattern that helps the males and females recognize each other. In most species, like this one, the males fly and flash, while the females generally stay still and respond with a flash of their own. It's not clear why some species of fireflies flash synchronously, although some hypotheses involve diet, social interaction, and altitude. No matter why they do it, the flashing of lightning bugs is a magical sight to see—and we can all use a little magic sometimes.

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