大自然打击我的心灵!奇怪的潜水潜水蜘蛛

更新于2018年10月11日
diving 钟 spider photo
©。 格哈德·舒尔茨/盖蒂图片社
diving 钟 spider photo

©Colin Milkins /盖蒂图片社

There is only one species of spider in the world that spends its entire life underwater. It is called the diving 钟 spider or 水蜘蛛. A spider that lives underwater is amazing enough but to make matters mind-blowing, the spider uses a "diving 钟"或实际上像肺的水泡!

在欧洲和亚洲的池塘中发现的这些小蜘蛛已经适应了寻找表层下的昆虫和甲壳类动物的生活,尽管它们远离地上的食肉动物,但它们仍然安全地生活着。'禁止青蛙和鱼类。他们通过设计各种SCUBA坦克,实现了从陆地到水下的过渡。用丝绸形成一个"bell", the air-breathing spiders trap air in hairs on their abdomen and legs at the surface of the water and fill the 钟 with the trapped air. They can then live inside the 钟, and in fact females live almost their entire lives inside the 钟 only coming out to snatch prey or to refill their air supply.

但是加油很少发生,这里's the mind-blowing part: unlike our own SCUBA tanks that have to be refilled when we use up all the air, these diving 钟s can replenish the air supply on their own.

"As the spider consumes oxygen from the air in the 钟, it lowers the oxygen concentration inside. The oxygen can decrease below the level of dissolved oxygen in the water, and when this happens, oxygen can be driven into the bubble from the water,"罗杰·西摩(Roger Seymour)教授在BBC自然杂志上说。

维基百科更加详细:

在充满氧气的水中,[F]不需要在表面进行频繁的补充,因为钟形结构允许与周围的水进行气体交换:补充氧气,并通过扩散排出二氧化碳...当气泡中的氧气用完时二氧化碳会扩散,但是随着二氧化碳的累积,二氧化碳会溶解在水中而消失。该系统被称为"the water spider'气泡水,"但是它实际上比真正的Aqualung更先进,后者需要经常用压缩空气重新填充,不能选择用溶解在水中的气体连续交换氧气和二氧化碳。

探索新闻 状态,"Indeed, the diving 钟 functions as a very effective physical gill as opposed to an anatomical gill. And, because the diving 钟 spider lives a quiet sedentary life, its oxygen requirements are easily met -even in extreme conditions of warm stagnant water."

So diving 钟 spiders only need to come up for air maybe once a day, thanks to their amazing air bubble webs.

diving 钟 spider photo
©。 格哈德·舒尔茨/盖蒂图片社

©Gerhard Schulz /盖蒂图片社

Here is a video of the diving 钟 spider at work filling up its air bubble and then pulling its prey inside: