Biological Notes on Marisa cornuarietis, A Predator of Australorbis glabratus, The Snail Intermediate Host Of Schistosomiasis in Puerto Rico

Frederick F. Ferguson
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Juan R. Palmer
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Summary

The omnivorous and voracious habits of the large ampullarid snail Marisa cornuarietis are the basis of its predation and competitive action against Australorbis glabratus in Puerto Rico. Field observations have been made on the biology of Marisa in comparison with that of the schistosome vectorial species.

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