Angiostrongylus cantonensis is a kind of larva migrans, which mainly invades the human central nervous system and causes eosinophilic meningoencephalitis or meningitis. In June 2006, Angiostrongylus cantonensis was not killed when a restaurant in Beijing was processing snails, which led to an outbreak of Angiostrongylus cantonensis in Beijing.
Pomacea canaliculata, also known as large bottle snail and apple snail. Originated in the Amazon basin of South America, it was introduced into Taiwan Province Province of China in 1970s, and was introduced into Japanese, Philippine, Vietnamese, Thailand and other Asian countries as a food in 1980s. 198 1 was introduced to Guangdong, and was cultivated in a large area from 1984, and quickly spread to Guangxi, Fujian, Hainan, Guizhou, Zhejiang, Shanghai, Jiangsu, Hunan, Hubei, Jiangxi and other places. Pomacea canaliculata has the characteristics of strong adaptability, strong reproductive ability, large appetite and fast growth.
Pomacea canaliculata is an aquatic animal, with a wide variety of feeding habits, mainly plants, among which rice is its main harmful crop. Ampullaria canaliculata can feed on five common crops, such as Zizania latifolia, lotus root and arrowhead 15, and also likes to eat aquatic vegetables such as Toona sinensis, water chestnut and water chestnut in humid habitats, so Ampullaria canaliculata is harmful to aquatic plants. Pomacea canaliculata is one of the malignant alien invasive species in the world 100, and also one of the first 16 "extremely harmful alien species" that invaded China.