CATDOLL : CATDOLL: Can spiders recognize their own children? Zhihu (Can spiders recognize their own children? Zhihu novel)

1. The great maternal love of the mother spider?

There is a kind of red spider in Africa that wraps its eggs tightly with sticky spider silk. The mother spider guards the egg bag all day long, waiting for the birth of the little spiders. About a month later, a small hole appears in the egg bag, and the little spiders crawl out one by one.

These little spiders need to eat as soon as they are born. The mother spider lays more than a dozen food balls, which are enough for the little spiders to eat for three days. After three days, the little spiders have grown a lot and begin to shed their skin for the first time. At this time, the mother spider uses its spider thread to gather the little spiders together, and then lies on top of the little spiders. The hungry little spiders scramble to climb onto the mother spider's body. At first, they are a little hesitant, but I don't know which spider will take the first bite, and the mother's skin is bitten. The other brothers and sisters smell the blood and bite the mother one after another.

Soon, the mother's body was covered with her children. Each child had a sharp straw. Hundreds of straws pierced the mother's skin and penetrated her body. The mother did not move, allowing the hundred children to suck the liquid in her body, feeding them again and again. The mother spider's body was enough for the little spiders to grow for four days. After four days, the little spiders grew a little bigger, but the mother spider had been eaten up. The mother spider fed her children, and her own juice awakened the children's hunting instinct. The mother spider willingly served as the first prey of her children.

The children learn to hunt in the process of eating their mother. Only in this way can the little spiders survive in the harsh environment.

2. Why does the spider not recognize its parents after it breaks out of the shell?

When a spider hatches from its shell, it doesn't know who its parents are and needs to live independently without care, so it won't recognize its own parents, let alone other animals. After the mother spider lays eggs, she leaves and lets her offspring fend for themselves. The little spiders will take care of themselves, know where to find food and how to survive, and won't care about the life or death of their offspring until they grow up.

3. What are the details of the others, the bride, and the descendants in the Spider-Verse?

Others: Kane, a clone of Peter Parker from Earth-616, the second generation Bride of the Scarlet Spider: Cindy, who is said to have gained spider abilities from being bitten by the same spider as Peter Parker from Earth-616, and named her Silk Descendant: Benji, the youngest son of Peter Parker from Earth-982 (and a daughter, Spider-Girl), who once teamed up with Black Cat. Their father Peter died in the battle with Morlun in the Spider-Verse to protect his siblings.

4. How do spiders reproduce?

In most species of spiders, the female is larger than the male because her abdomen is filled with eggs and her silk glands are large, which she uses to weave an egg bag to protect the eggs. Its instinct is to catch any moving animal that is smaller and edible than itself and kill it with venom from its fangs. Therefore, if the male spider simply crawls towards the female spider, it will undoubtedly be caught by the female spider that pounces on it before it has a chance to fulfill its reproductive function. Therefore, the most important thing for the male spider is to have some way to let the female recognize it in time to avoid being killed.

In addition to the communication signals that allow females to recognize them, male spiders also have some means of protection when approaching their dangerous mates. There are only a few animals in the world that have an organ that transmits sperm to females far away from the testicles that produce sperm, and male spiders are one of these animals. In most animals, sperm is transported from the testicles to the outside of the body through a duct. If a special organ is used to fertilize the female, this organ is located at the opening of the sperm-transporting duct. But this is not the case with male spiders. The appendages of their mouthparts, the last segments of their tentacles, have evolved into special organs for transmitting sperm to females. In its simplest form, this organ is like a medical dropper, with a balloon that stores sperm sucked in through a tube and is inserted into the female's genitals during mating. The most complex form of this organ, which is incredibly complex, can only be inserted into the opening of the female's genitals of the same species.

When a male spider matures, it spins a small piece of silk on which the sperm released from its abdomen is deposited, and then it draws the sperm into its antennae. The sperm carried here is ready to pass through the mouthparts of a hungry female spider and insert into the latter's genitals to fertilize it. In most cases, the opening of the female's genitals acts like a lock, and the male's antennae act like a key. Even if the courtship process goes wrong, the male spider will not be able to deliver sperm to females of the opposite species. For spiders, mating is so rare that until copulation occurs, there are protections to prevent sperm from being wasted on females of the opposite species.

The sperm will pass on the spider's living habits to the next generation, so the male puts it in a special organ that can be carefully protected, and from here it is transmitted to the female, so that it takes the least risk. After these tasks are completed, the male spider begins to look for a mate.

In a few species of spiders, the male is the same size as the female, or slightly larger. In such cases, there is little problem. But it does not follow from the mere fact that the sexes are equal in size that courtship rituals must be absent. Yet courtship is not necessarily necessary. Some species do lack courtship. In some crab spiders (so called because they can move sideways like crabs) the male is larger than the female, and copulation is almost forced. The male approaches the female, seizes her, and after some preliminary caressing, thrusts his tentacles into her to fertilize her. In other crab spiders, where the male and female are the same size, but still potentially dangerous, the male, after touching, seems to have hypnotized the female, tying her to a leaf on which she rests. When the female is firmly tied down, the male begins to thrust his tentacles in, and when the sperm has been injected, he withdraws. Later, the female unties herself and is freed.

In most spiders, males and females are equal in size, or the males are slightly smaller, so this sluggish strategy would be impossible to escape. Some species of spiders have resorted to stratagems to solve this problem. The male of some species of Araneae builds a nest under a rock, facing the female, and hunts and captures her when she is still young and immature, imprisoning her in a silken chamber next to the nest. When the female molts and becomes an adult and is still soft and unable to save herself, the male mates with her and then releases her. This is almost all the plot of an ancient farce, but it is completely acceptable in biological terms.

Some male spiders use the method of giving food to females to appease their carnivorous instincts. For example, a wandering sharp-eyed spider of the genus Arachnida catches one or two flying insects and wraps them in a silk ball bag. When he finds a female, he lures her to rush towards him. When the female does so, the male presents the pre-packaged food. Just like a housewife seeing such convenient kitchen conditions, how can she resist not trying it! While the female is busy eating the insect, the male leisurely transfers sperm to her.

5. Will the spider die after giving birth to babies?

Not necessarily. Spiders lay eggs, and the mother spider has to take care of the eggs after laying them. Some female spiders die after laying the last egg sac, some continue to live for a period of time after the spiderlings leave the egg sac, and some are bitten to death by their own spiderlings for food. Compared with ordinary insects, spiders are long-lived. Most spiders complete a life cycle, generally 8 months to 2 years. Male spiders are short-lived and die shortly after mating.

Some male spiders are eaten by female spiders after mating, but this is uncommon.

The male black widow spider dies several days after mating, and is occasionally eaten by the female spider because he is too weak after mating.