Migrating monarch butterflies 'nose' their way to Mexico
Thursday, September 24, 2009 - 14:42
in Biology & Nature
The annual migration of monarch butterflies from across eastern North America to a specific grove of fir trees in Mexico has long fascinated scientists who have sought to understand just how these delicate creatures can navigate up to 2,000 miles to a single location. Neurobiologists at the University of Massachusetts Medical School (UMMS) have now found that a key mechanism that helps steer the butterflies to their ultimate destination resides not in the insects' brains, as previously thought, but in their antennae, a surprising discovery that provides an entirely new perspective of the antenna's role in migration.