A surprisingly unexpected finding: male spiders prefer to mate with female spiders and silk rather than choose big and experienced girls.
Most male spiders belonging to the Argiope bruennichi line (yellow black stripes) only mate 1 or at most 2 times in their life. It's not that the guys are too picky, but the sad fact is that the female spiders tend to re-feed their mates as soon as they're done . There are also cases where male spiders are lucky to escape after enjoying the forbidden fruit, but they are still mating again before sex life ends.
Male black stripes of yellow stripes. (Internet photo )
The reason is that during sex, the male will intentionally break one of his two genitalia and leave inside the female to prevent sexual partners from conceiving by future rival. This ' sacrifice ' tactic is often quite satisfactory compensation. Any spider that succeeds will increase the chances of being a father three times more than the loser. Therefore, with the black-yellow male spider spider, the ability to spot a ' virgin ' plus the above strategy will get more eggs and result in more crowded descendants.
The study illustrates unusual sexual battles in the animal world. Professor Jutta Schneider of the University of Hamburg (Germany), who co-authored the study of spider sex life, said that if the males in nature often have large numbers of sperm cells, they will have countless mates, the story is very different for the yellow black spider spider.
These spiders often ejaculate a small spider web and hide them in special front legs called pedipalp, just like boxing gloves. To start mating, the spider crawls into the spider's web and vibrates. Receiving a special signal, the female spider is ready to fertilize in the center of the spider web. When male spiders approach from the front and perform mating actions, females suddenly curl up and the male only has a few seconds to complete the task before being eaten by the female spider. More than 70% of male spiders end their lives so quickly.
In the experiment, the scientists released two female spiders, one larger in size, before dropping more male spiders to approach. Contrary to their predictions, sexless females receive special treatment of males. Only one male spider chose a female partner who had a previous experience. The reason that male spiders detect female spiders is silk because these girls emit a characteristic odor, and this signal disappears after sex.