News Animals Freshwater leeches’ taste for snails could help control snail-borne diseases More research is needed before leeches become snail biocontrol These leeches are on the hunt for a snail snack. In the lab, Helobdella austinensis proved a sucker for snails. A new study proposes them as a form a biocontrol against snail-borne diseases. Naim Saglam Share this:EmailFacebookTwitterPinterestPocketRedditPrint By Bethany Brookshire April 11, 2023 at 7:01 pm Leeches might seem like relics of a bygone age of medicine, but they haven’t outlived their usefulness to people yet.