Whiff Weapon: Pheromone might control invasive sea lampreys

The sea lamprey, a serpentine fish that feasts on other fishes’ blood, nearly wiped out the Great Lakes’ native game fish populations in the 1940s. Now, researchers have characterized the primary components of the pheromone that the lamprey relies upon to find its spawning grounds. The work could provide a potent and inexpensive bait for lamprey traps.