SSS 2012-07-24(在线收听) |
This is Scientific American 60-second science.I'm Innmi Craft.Got a minute? Here's one way bites my get there next meal by ease dropping on flies having sex.That's eat a lot of seemingly undetectable flies.To find out how the winged memers find the insex.
Researcher set up a vedio camera inside coutia that was home to a batconi and lots of bugs.The veido showed that bazi rely on their eco-location skills to detect flies at specific time when they are engaged in rather noisy sex.
Flies are usually quiet in that territory and sit on uncloder cellings in caves when background's noise mix the echoes from their movement.But when flies are felling frisky.Meals can't help but flutter theri wings in meeting a bursed cracked sound at the bize pick a bond.
During more than 1,000 sexual in couners cart in the act in the vedio.5% of the insex were carted in the act by bats.The researches published in the journal occured biology.The study shows that ignorances can be safer than corner knowledge when predators are on the prow. |
原文地址:http://www.tingroom.com/lesson/sasss/2012/7/187742.html |