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Every year million of manor--monarch butterfly--flies fly thousands of miles to light--alight in one specific farest--forest in Mexico. How do they know what direction to flatter--flutter? Scientist has--had thought that inside--insect GPS gene--system in their brains geren--steered them in ( their) direction.
Now a new study published in the journal science over turns that idea because sun related directional sensing actually resigned..--resides in butterfly in t.says--antennae, say scientist at the university of 马萨州 medical school.
The research of remembered a half century of--old study that noticed--noted that if butterfly lost their intenn--antennate…mid-fly--flight intended they became soriented--disoriented . so they put butterfly in the fly--a flight simulator and try to convince them to fly south. Those were intended--with there antennate intact have no problem to flying south. But those were out there--without their antennae just couldn’t do it. Next (day) they painted their butterfly intended--antennae black, black in--blocking light sensing . Those insects could ind..orient themselves but the--when researcher cover antennae (intent) in (their) clear painting and the butterfly could once again fly in the correct direction.
Butterfly orientated--antennae were already known to (be know) the sense of odor, wind, even sound. Now it seems that they also vital forget their--for getting lonely back to Mexico to mingle make the next generation of monarchs.
今天听的不好...触角的单词怎么也没有听出来. |