DAMAGE—Ugly holes and spots caused by the shot hole borer. Courtesy photo
An ecosystem is a delicate balance, and when a foreign species is introduced into the mix the results can be disastrous.
Take the case of the Polyphagous shot hole borer beetle, a species native to Vietnam that has been aggressively infesting and killing local trees. With no native predator in place to stop it, the infestation is spreading.
Rosie Dagit has been studying the beetle since 2012. Dagit is a senior con...