Salted butterflies

The salt used to melt slick winter ice can alter the bodies of summer's butterflies

By Stephen Ornes, 09:11 AM June 23, 2014

The salt used to melt the slick ice on winter roads can alter the brains and muscles of butterflies the following summer. That’s the finding of a new study conducted with monarch caterpillars.

Before they spin a cocoon and emerge with wings, the caterpillars feed on the leaves of milkweeds, oaks and other plants. Researchers collected the leaves from milkweeds growing near a country road in Minnesota. They compared them to those from milkweeds growing at least 100 meters (328 feet) away. Green...

Source URL: https://student.societyforscience.org/article/salted-butterflies-have-bigger-bodies-and-brains