Submission + - Cockroaches Evolving to Avoid Roach Motels (sciencemag.org)
sciencehabit writes: Only a few years after roach motels were introduced in the 1980s, they lost their allure for an increasing number of German cockroaches. Researchers soon realized that some roaches had developed an aversion to glucose—the sugary bait disguising the poison—and that the insects were passing that trait on to their young. Now, scientists have figured out how this behavior evolved.