Global Invasive Species Database 100 of the worst Donations home
Standard Search Standard Search Taxonomic Search   Index Search

   Pomacea canaliculata (mollusc)    
Ecology Distribution Management
Info
Impact
Info
References
and Links
Contacts


         General Impact

    Pomacea canalicualata was originally introduced from South America to south-east Asia around 1980, as a local food resource and as a potential gourmet export item. The markets never developed; the snails escaped or were released, and P. canaliculata became a serious pest of rice throughout many countries of south-east Asia. In the Philippines, it is considered the number one rice pest and has caused huge economic losses. It was introduced to Hawai‘i in 1989, probably from the Philippines, and for the same reasons as for its initial introduction to south-east Asia. Again, the snails rapidly escaped or were released and quickly became major taro pests. P. canaliculata can spread rapidly from agricultural areas into wetlands and other natural freshwater systems where it may have a serious impact. These potential impacts could involve destruction of native aquatic vegetation leading to serious habitat modification, as well as competitive interactions with the native aquatic fauna, including native snails. Already, introduced P. canaliculata has been implicated in the decline of native species of Pila apple snails in south-east Asia. Also, native species of Pila in the Philippines are reported to have declined as a result of extensive pesticide applications against introduced P. canaliculata. Climatic modeling has shown that it has the potential to spread to many as yet uninfested parts of the world, for instance the huge rice-growing areas of India. It has already been introduced to the USA and threatens the major rice-crops of Texas and California. Australia in particular is extremely concerned about its potential introduction to natural wetlands (e.g., Kakadu) as well as to rice-growing areas.



         Location Specific Impacts:
    Cambodia English 
    Competition: Possibly competes with native freshwater snail species.

    Herbivory: Voracious macrophyophagous herbivore. Feeds on many crops, probably also natural vegetation.
    China English 
    Competition: Possibly competes with native freshwater snail species.

    Herbivory: Voracious macrophyophagous herbivore. Feeds on many crops, probably also natural vegetation.
    Dominican Republic English 
    Competition: Possibly competes with native freshwater snail species.

    Herbivory: Voracious macrophyophagous herbivore. Feeds on many crops, probably also natural vegetation.
    Guam English 
    Competition: Possibly competes with native freshwater snail species.

    Herbivory: Voracious macrophyophagous herbivore. Feeds on many crops, probably also natural vegetation.
    Hong Kong English 
    Competition: Possibly competes with native freshwater snail species.

    Herbivory: Voracious macrophyophagous herbivore. Feeds on many crops, probably also natural vegetation.
    Java (Indonesia) English 
    Competition: Possibly competes with native freshwater snail species.

    Herbivory: Voracious macrophyophagous herbivore. Feeds on many crops, probably also natural vegetation.
    Sumatra (Indonesia) English 
    Competition: Possibly competes with native freshwater snail species.

    Herbivory: Voracious macrophyophagous herbivore. Feeds on many crops, probably also natural vegetation.
    Japan English 
    Competition: Possibly competes with native freshwater snail species.

    Herbivory: Voracious macrophyophagous herbivore. Feeds on many crops, probably also natural vegetation.
    Korea, Republic of English 
    Competition: Possibly competes with native freshwater snail species.

    Herbivory: Voracious macrophyophagous herbivore. Feeds on many crops, probably also natural vegetation.
    Lao People`s Democratic Republic English 
    Competition: Possibly competes with native freshwater snail species.

    Herbivory: Voracious macrophyophagous herbivore. Feeds on many crops, probably also natural vegetation.
    Malaysia English 
    Competition: Possibly competes with native freshwater snail species.

    Herbivory: Voracious macrophyophagous herbivore. Feeds on many crops, probably also natural vegetation.
    Sarawak (Malaysia) English 
    Competition: Possibly competes with native freshwater snail species.

    Herbivory: Voracious macrophyophagous herbivore. Feeds on many crops, probably also natural vegetation.
    Papua New Guinea English 
    Competition: Possibly competes with native freshwater snail species.

    Herbivory: Voracious macrophyophagous herbivore. Feeds on many crops, probably also natural vegetation.
    Philippines English 
    Competition: Possibly competes with native freshwater snail species.

    Herbivory: Voracious macrophyophagous herbivore. Feeds on many crops, probably also natural vegetation.
    Singapore English 
    Competition: Possibly competes with native freshwater snail species.

    Herbivory: Voracious macrophyophagous herbivore. Feeds on many crops, probably also natural vegetation.
    Sri Lanka English 
    Competition: Possibly competes with native freshwater snail species.

    Herbivory: Voracious macrophyophagous herbivore. Feeds on many crops, probably also natural vegetation.
    Taiwan English 
    Competition: Possibly competes with native freshwater snail species.

    Herbivory: Voracious macrophyophagous herbivore. Feeds on many crops, probably also natural vegetation.
    Thailand English 
    Competition: Possibly competes with native freshwater snail species.

    Herbivory: Voracious macrophyophagous herbivore. Feeds on many crops, probably also natural vegetation.
    California (United States (USA)) English 
    Competition: Possibly competes with native freshwater snail species.

    Herbivory: Voracious macrophyophagous herbivore. Feeds on many crops, probably also natural vegetation.
    Florida (USA) (United States (USA)) English 
    Competition: Possibly competes with native freshwater snail species.

    Herbivory: Voracious macrophyophagous herbivore. Feeds on many crops, probably also natural vegetation.
    Hawaii (United States (USA)) English 
    Competition: Possibly competes with native freshwater snail species.

    Herbivory: Voracious macrophyophagous herbivore. Feeds on many crops, probably also natural vegetation.
    Texas (United States (USA)) English 
    Competition: Possibly competes with native freshwater snail species.

    Herbivory: Voracious macrophyophagous herbivore. Feeds on many crops, probably also natural vegetation.
    Viet Nam (Vietnam) English 
    Competition: Possibly competes with native freshwater snail species.

    Herbivory: Voracious macrophyophagous herbivore. Feeds on many crops, probably also natural vegetation.



ISSG Landcare Research NBII IUCN University of Auckland