Australorbis Tenagophilus in Peru, and its Susceptibility to Schistosoma Mansoni *

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Abstract
Summary The presence of the planorbid snail Australorbis tenagophilus (Orbigny, 1835) in Peru is recorded for the first time. The population studied is highly susceptible (72.7%) to a Brazilian strain of Schistosoma mansoni, infective to other populations of A. tenagophilus but not to A. glabratus. Exposure to another Brazilian strain of S. mansoni, infective to A. glabratus but not to A. tenagophilus, resulted in the development of the parasite in 43.3%, with the production of primary sporocysts in 80%, and of secondary sporocysts in 20%, of the infected specimens, although no cercariae were produced.

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