Discoverers Event – One Species or Two, and How We Know: Land Snails on a California Island
March 12, 6:30 pm - 8:00 pm
Speaker: Tim Pearce
The land snails Micrarionta gabbi and M. maxima, the larger of the two, are both found on San Clemente Island. M. maxima variously has been considered a subspecies, a full species, or a synonym of M. gabbi. Island snails show some size bimodality with the larger form tending to occur in distinct areas on the northeastern part of the island. However, DNA analysis indicates that these snails are a single species. Future studies could explore the reason for the size difference and location preference.