Find the spider 'most brutal' of the earth

The spiders are all ... afraid of their wives, but the spiders alone are not.

The spiders are all . afraid of their wives, but the spiders alone are not.

The most "savage" spider in the world

You probably know how dangerous the spider's "love" is, especially for male spiders. In most cases, female spiders will re-eat male spiders for resuscitation. Or if not eaten like spiders Nephilid, male spiders will sacrifice their ability to become father to become tougher, to prevent other spiders from flirting with his wife.

Picture 1 of Find the spider 'most brutal' of the earth

Spider Lariana jeskovi.

However, scientists at Greifswald University (Germany) have found a spider that goes against this rule - the spider Larinia jeskovi. Specifically, male Larinia spiders will cut off a part of the genitals of the female, to prevent any other male spider from mating.

According to observations from experts, "spider virgins" have a section called "scapus" - a small spot on the genitals. But after the "rain cloud", this part has disappeared.

Picture 2 of Find the spider 'most brutal' of the earth

This process only takes a few short seconds. So to see more clearly, scientists are forced to use a barbaric, brutal method of pouring liquid nitrogen into spiders while "working" , then observing through photos. virus cutting class.

The results showed that when mating, male spiders will have to bite "scapus" to better balance. But after the execution, they will easily bite off this part, so that the other males will have no place to cling.

Picture 3 of Find the spider 'most brutal' of the earth

The position of the arrow is the strange "scapus" part of the female spider.

But this does not mean that the female spider will only reproduce once. According to previous studies, female spiders have the ability to store sperm for many years, so it can still lay eggs continuously.

The study is published in Current Biology.

Update 17 December 2018
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