New Gene Study Shows Locusts Came Out of Africa
New Gene Study Shows Locusts Came Out of Africa
Newswise — Current thinking about the desert locust, the swarming African insect that destroys crops and wreaks havoc on economies, has been that it originated in the western hemisphere and migrated to Africa. A new genetic study of this insect of biblical fame says it’s actually the other way around. Like humans, this voracious species of locust probably came out of Africa.
In a paper in the January ’06 issue of the Proceedings of the Royal Society of London, lead authors Sean Mullen, University of Maryland post-doctoral fellow, and Nathan Lovejoy, an assistant professor at the University of Toronto, Scarborough, indicate that these locusts – Schistocerca – originated in Africa. From there they probably migrated to the western hemisphere, between three and five million years ago, by flying over vast expanses of Atlantic Ocean.
The findings reverse the conclusions of an earlier morphological study (Song 2004), which tried to determine why there is only one species of these locusts in the eastern hemisphere, when all of its more than 50 species of relatives live in the west. That study theorized that the desert locust colonized Africa from North America.
More: newswise.com



