CHINESE MYSTERY SNAIL (Cipangopaludina Chinensis)

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CHINESE MYSTERY SNAIL (Cipangopaludina Chinensis)

INVASIVE SPECIES ALERT! REPORT INVASIVE SPECIES CHINESE MYSTERY SNAIL www.reportinvasives.ca (Cipangopaludina chinensis) HAVE YOU SEEN THIS SNAIL? DESCRIPTION Native range from Southeast Asia to Japan and eastern Russia. Max size is 6.5cm, and distinguished by their large shell with 6-7 convex whorls separated by strong sutures. Shell is uniform in color without stripes or banding. Juveniles are light in color, and adults are olive-green to brownish in color. Chinese mystery snail prefers low flowing freshwater rivers, streams and lakes. Found partially buried in soft, muddy or silty substrates. They feed non-selectively on organic and inorganic benthic Image: www.cod.edu material and algae and diatoms. Females live up to 5 years and males live 3-4 years. Females give birth to live young and female fecundity is PRIMARY THREAT: Potential typically > 169 young in a lifetime, and young are born from June to October in North America. impacts include clogging of They were first imported into North America in the late water intake pipes, vectors 1800’s in live food markets in San Francisco, and were probably first released from the aquarium industry to for transmission of parasites intentionally create a local food source and diseases, and competing with native species for space. C URRENT STATUS DID YOU KNOW? LOOK-ALIKES January 2015 – Reports confirmed Banded mystery snail (Viviparus They have an operculum which is also georgianus) – non-native and in five lakes on Southern known as a “trap door” which can close Vancouver Island, four confirmed not present in BC, Olive mystery and provide protection from reports in downtown Victoria and snail (Viviparus subpurpureus) one confirmed report in a lake desiccation and predation. Experiments and Apple snails (Ampullariidae) near Mission, BC. Risk assessment have shown that they can survive non-native and not present in is in progress. No effective exposure to air for at least 4 weeks, BC. eradication method exists. making chemical treatment ineffective. When the Chinese mystery snail dies, ISTRIBUTION they omit an unpleasant odor. D Chinese mystery snails have been introduced into approximately 27 states in the U.S. and they have been reported in Ontario and the Great Lakes including Lake Erie, Ontario, Superior and Michigan .

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Cipangopaludina Chinensis: Effects of Temperatures and Parasite Prevalence
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