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| NAS - Nonindigenous Aquatic Species |
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Common Name: island applesnail
Taxonomy: available through 
Identification: Typical applesnails are globular in shape. Normal coloration typically includes bands of brown, black, and yellowish-tan, and color patterns are extremely variable. Albino and gold color variations exist (R. Howells, personal communication).
Size: Up to 150 mm length
Native Range:
South America.
Nonindigenous Occurrences: Spring Hill Lake near Mobile, Alabama (D. Shelton, personal communication); Lake Munson (J. van Dyke, personal communication), Lake Brantley (M. Minno, personal communication), and many other locations in Florida (D. Denson and L. Connor, personal communication); Alabaha River in Georgia (B. Albanese, pers. comm.); American Canal and Mustang Bayou in Texas (Howells, 2001), and in 2006 in Verret Canal in Gretna, Louisiana.
Means of Introduction: Probable aquarium release for initial introductions.
Status: Established in Florida, Georgia, and Texas (Rawlings et al. 2007).
Impact of Introduction: Unknown.
Remarks: Initially P. insularum had been identified as P. canaliculata in Florida, Georgia, and Texas. Genetic testing confirmed that specimens collected in Florida, Georgia, and Texas are P. insularum (Rawlings et al. 2007).
References
Collins, T. Personal communication. Florida International University.
Howells, R. Personal communication. Texas Parks and Wildlife Department.
Howells, R. G. 2001. History and status of applesnail (Pomacea spp.) introductions in Texas. Texas Parks and Wildlife Department, Management Data Series No. 183.
Minno, M. Personal communication. St. Johns Water Management District.
Rawlings, T. A., K. A. Hayes, R. H. Cowie, and T. M. Collins. 2007. The identity, distribution, and impacts on non-native apple snails in the continental United States. BMC Evolutionary Biology, http://www.biomedcentral.com/1471-2148/7/97.Shelton, D. Personal communication. Alabama Malacological Research Center.
van Dyke, J. Personal communication. Florida Department of Environmental Protection.
Other Resources: Key to the applesnails of Florida
Identification of applesnails (Pomacea) in U.S. waters
Author: Benson, A. J
Revision Date: 8/14/2007 Citation for this information:
Benson, A. J. 2009. Pomacea insularum. USGS Nonindigenous Aquatic Species Database, Gainesville, FL.
<http://nas.er.usgs.gov/queries/FactSheet.asp?speciesID=2599> Revision Date: 8/14/2007
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