Translated material
Crime decoration: the role of marriage gifts in world evolution
Why are the spiders securely packs gifts, why usually the males usually give wedding gifts to females and, in what cases, the on the contrary, says Evgenia Timonov, the author of the popular video blog “everything is like animals”.
Press Secretary of the President of the Russian Federation Dmitry Peskov said that the expensive watch, which was previously paid by Alexei Navalny, was presented to him by his wife, the famous figure skater Tatyana Navka. Earlier on August 2, Navalny wrote that the clock that was on the hand of the president’s press secretary at the day earlier than the wedding was the Richard Mille RM 52–01 worth $ 620 thousand (about 37 million rubles).
- Slon
Here you are laughing, but marriage gifts are very important. Without them, many of us would die out at the level of arthropods. So let's be respected and see what gifts are and why they are needed in nature.
For example, the spider Pisaura mirabilis, Pisaura is amazing. For males, Pisaura Gift is a prerequisite for continuing the genus. And not just, but a gift made by its numerous hands. Without it, nothing good shines on a date: Pizaura females are much larger, and their appetite is much better than a character.
So the male comes on a date, holding in outstretched hands a bundle from a web, something between bread and salt and a white flag. The bundle is very neat, because the first thing the female evaluates the quality of the package. The even and dense ball of white silk suggests that the male is a good manufacturer, in which all eight hands grow from where they need. And such a package itself reminds her of an egg cocoon, which makes you think about children.
The male comes on a date, holding in outstretched hands a bundle of web, something between bread and salt and a white flag
The female accepts a gift and begins to unpack to see what is there. There may be different. In general, the spider expects to find something edible inside, and most males really pack the fly there. But! Someone at first eats this fly himself. He sucks, and wraps an empty skin as a gift.
And it would be okay, but some males are initially packed in subsistent things: pebbles, flowers, pieces of bark. And especially cynical types generally braid their own excrement. Imagine, the prince comes, brings a gift, you unfold - and there ... OH Shit!
While the female is busy unpacking the mysterious bundle, the male has a little time and liberated limbs that it is time to put into business. And he lets it down. But the fertilization of Pizaur is a non -parting process, so usually the female manages to get to the bottom of the contents earlier than it ends.
If these are, for example, flowers or poop, she just throws a present ... No, not in the face, it just goes to the ground. But the deceiver could already have time to convey to her at least a little of his genetic material. And if he did not have time, then he will pick up his gift, patch up the package and run to look for someone in a little one.
What happens if the gift really turned out to be valuable?
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