Spread of freshwater Pomacea snails (Pilidae, Mollusca) from Argentina to Asia.
Pomacea canaliculata snails damage aquatic plants such as rice, taro [Colocasia esculenta], Ipomoea aquatica, Nelumbo nucifera, Juncus decipiens, Cyperus monophyllus, Zizania latifolia [Z. caduciflora], Oenanthe stolonifera [O. javanica], Trapa bicornis and Azolla spp. The snail is also the intermediate host of the rat lungworm, causing eosinophilic meningoencephalitis in humans in Taiwan and Japan. The biology and current control methods of the snail are discussed. This paper was presented at the Workshop on Exotic Pests in the Pacific - Problems and Solutions, held on May 31-June 1, 1990, at the University of Guam.