Brevi considerazioni sulla presenza di due molluschi dulciacquicoli alloctoni a Pantelleria (Canale di Sicilia)

Two allochthonous freshwater molluscs are reported for Pantelleria Island (Sicilian Chanel): Lymnaea stagnalis (Linnaeus,1758) (Lymnaeidae) and Physella (Acutiana) acuta (Draparnaud, 1805) (Physidae). These species, which represented the first two species of freshwater molluscs reported in Pantelleria, were introduced to the island through aquatic plants imported from Northern Italy for ornamental use. In the last two years, in which we can constantly monitor these two species, we have documented a rapid increase in their populations. In consideration of the particular island environment, we will continue to monitor the presence of these two species in Pantelleria.