For the first time, researchers have analyzed the DNA of rusty patched bumble bees across the insect’s range. The results add urgency to efforts to conserve the endangered species.
Using a non-lethal technique, scientists collected tiny leg sections from bees to determine their genetic makeup. They found low genetic diversity, and inbreeding.
“The numbers of colonies that those individuals represent are much lower than expected,” said lead author John Mola from Colorado State University. “Even in areas like the Upper Midwest, where the rusty patched bumblebee, at least insofar as insects can become famous, has become a little bit emblematic as a stronghold, this species is still at risk.”
The rusty patched bumble bee was once common from Minnesota to the northeastern U.S. and in the Appalachian Mountains.
Starting about 25 years ago the bumble bee experienced a precipitous 90 percent population decline.
It was listed as endangered in 2017. In 2019 the rusty patched bumble bee was named the Minnesota state bee.
Click here to read more mprnews.org
Photo Credit: istock-kerem-hanci
Categories: Minnesota, Education