Scientist Norman Platnick has been gathering and studying spiders for more than forty years. He was responsible for organizing the exhibit.
Mister Platnick says people need spiders because the creatures help keep the insect population down. He says they can eat more than thirty-five kilograms of bugs each year on about less than half a hectare of land.
“If the spiders were not here, we might not be here either because insects would have devoured all those crops.”
Another interesting fact about spiders: they can live after the loss of a leg.
“And, in fact, if it happens young enough when the spider still has several molts before it becomes an adult, it can even regrow that leg. So clearly, if you lose them, having more is an advantage.”
The show explains the strange spider method of capturing and eating its food. Human beings begin to break down food inside our mouths. But most spiders do not chew. So they break down food before it enters the body. A spider will inject its victim with a poison that very quickly makes the prey unable to move. Then a spider spits digestive fluid into the body of the prey. This turns the food into a liquid that the spider can suck up.
It sounds like a horrible death. But spiders can also have what seems like a soft touch. For example, some spiders carry as many as one hundred young around on their back for up to a week. And although most spiders carry some kind of poison, few can hurt humans. In fact, says Norman Platnick, some spider venom may be good for human health.
【New York Museum show just crawling with spiders】相关文章:
★ Renew your life!Change Up the Routine
★ Stop Wasting Time Being a Perfectionist
★ I will greet this day with love 1
★ The beautiful sound of violin
最新
2020-12-21
2020-08-06
2020-07-31
2020-07-30
2020-07-30
2020-07-30