A recent survey on Prince Edward Island revealed the presence of a previously unidentified freshwater snail species in the Maritimes region. Nature P.E.I. announced that the snail, believed to be the big-eared radix, is undergoing genetic testing for confirmation. The discovery was made at Andrew’s Pond in Charlottetown’s East Royalty area by Jess Dewey, an aquatic species technician from the P.E.I. Invasive Species Council.
The big-eared radix, native to Europe and Asia, is suspected to have been introduced into the pond through improper disposal of aquarium contents. Dewey highlighted the possibility of individuals releasing aquatic pets into the wild when they can no longer care for them, especially in urban areas like Charlottetown.
According to Nature P.E.I., the adaptation of more southerly snail species to northern regions like P.E.I. is feasible as freshwater ponds warm up. The island is known to host around 25 freshwater snail species, as stated in the release.
Freshwater snails, though not extensively studied on the island, play a crucial role as a food source for native fish species. Dewey emphasized the need for further research to understand the diversity, abundance, and distribution of these snails in Prince Edward Island, with plans to survey more ponds in the upcoming year.
The suspected big-eared radix’s potential impact on the local ecosystem remains uncertain, but there are concerns about its interaction with the native ram horn snail. Dewey highlighted the importance of the Don’t Let it Loose program, which aims to prevent the release of pet species into the wild, citing previous cases of invasive species like goldfish in P.E.I.
To address the issue, Dewey suggested ethically surrendering pets, including small animals like fish and snails, to the P.E.I. Humane Society or research labs at UPEI or school classrooms as alternatives to releasing them into natural habitats.