Come fall, monarch butterflies feel the need for a change in latitude. A new study shows that changes in the activity of a suite of genes in the butterflies’ brains help the insects find their way to overwintering grounds in Mexico.
Steven Reppert, a neurobiologist from the University of Massachusetts Medical School in Worcester, leads a team of scientists on a mission to uncover the monarch’s migratory signals. The team describes a new genetic analysis of stationary summer monarchs and fall migratory monarchs in the March 31 BMC Biology.
Note: To comment, Science News subscribing members must now establish a separate login relationship with Disqus. Click the Disqus icon below, enter your e-mail and click “forgot password” to reset your password. You may also log into Disqus using Facebook, Twitter or Google.