The role of Lymnaeids (Basommatophora: Lymnaeidae) in the dispersal of a New Zealand snail Potamopyrgus antipodarum (Gray, 1843) (Prosobranchia: Hydrobiidae)

Based on dissection of specimens collected in the field and on laboratory experiments, Lymnaea stagnalis (L.) has been found to consume live individuals of Potamopyrgus antipodarum (Gray), a prosobranch snail originating from New Zealand. P. antipodarum is not digested by the lymnaeid and passes undamaged through its gut. The phenomenon may be of significance for the expansion of P. antipodarum in European waters.