Apple Snail

Apple Snail (Pomacea canaliculata)

Photo courtesy of DAR

Description (Daniel et al., 2021):

  • Snails that attain sizes slightly smaller than a golf ball
  • Shell color varies from yellow to brown, typically with dark spiral bands

Habitat:

  • Found in freshwater systems such as wetlands and agricultural areas (Global Invasive Species Database, 2021)

Impacts & Concern (Daniel et al., 2021):

  • Competes with native species for resources and feeds on aquatic plants
  • Causes damage to taro and rice crops by chewing through plants and creating holes for bacteria to enter

Photo courtesy of DAR

Introduction (Global Invasive Species Database, 2021):

  • First introduced as a local food source and spread too quickly to control
  • Most likely spread to Hawaiʻi through aquarium release

Distribution in Hawaii (Daniel et al., 2021):

  • Kauai: Present
  • Oʻahu: Present
  • Molokai: Unknown
  • Lanai: Present
  • Maui: Present
  • Big Island: Present

References:

  • Daniel, W. M. (2021) Pomacea canaliculata (Lamarck, 1828): U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, Retrieved March 05, 2021, from https://nas.er.usgs.gov/queries/FactSheet.aspx?speciesID=980
  • Global Invasive Species Database (2021) Species profile: Pomacea canaliculata. Retrieved March 05, 2021, from http://www.iucngisd.org/gisd/species.php?sc=135 on 05-05-2021