Potential New Establishment of an Exotic Snail, Pomacea canaliculata (Lamarck 1891) (Gastropoda: Ampullariidae) in Trinidad

Ryan S. Mohammed


The aquatic freshwater gastropods are represented by eight families in Trinidad: Ampullariidae, Hydrobiidae, Lymnaeidae, Neritidae, Physidae, Planorbidae, Pleuroceridae and Thiaridae. Within these families, three established exotics can be deemed invasive aquatic species (IAS): Melanoides tuberculata or the “Red rimmed melania” and Tarebia granifera or the "Quilted melania," both belonging to the family Thiaridae. The third IAS is Pomacea diffusa or the “Spike-topped apple snail,” which belongs to the family Ampullariidae, of which there are three other native species (Mohammed and Rutherford 2012). This note brings to light the occurrence of a potential fifth member of the Ampullariidae family to be documented in natural drainages of Trinidad, Pomacea canaliculata or the “Channelled apple snail.”

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Fasulo, T.R. 2004. Apple snails of Florida, Pomacea spp. (Gastropoda: Ampullariidae). University of Florida. [Online] Available at http://entnemdept.ufl.edu/creatures/misc/gastro/apple_snails.htm (Accessed 31 January, 2015).

Hayes, K.A., Cowie, R.H., Thiengo, S.C. and Strong, E.E. 2012. Comparing apples with apples: clarifying the identities of two highly invasive Neotropical Ampullariidae (Caenogastropoda). Zoological Journal of the Linnean Society, 166 (4): 723-753.

Mohammed, R.S. and Rutherford, M.G. 2012. New records of two freshwater gastropod molluscs for Trinidad, West Indies. Living World, Journal of The Trinidad and Tobago Field Naturalists’ Club, 2012: 85-86.


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