Abstract
THOUSANDS of snails infected with trematodes have been surveyed in the Kuala Lumpur area1–5. Lymnaea rubiginosa (Michelin), the commonest and most carefully studied snail, is infected with at least thirteen species of trematode larvae: four echinostomes, three plagiorchids, two strigeids, one Spirorchis, one Trichobilharzia, one Fasciola and one psilostome. Multiple infections were, however, very rare and certain trematode combinations were not found7 and none of the few double infections found involved species with redial development2. The only double infections found were those in which both parasites underwent sporocyst development (producing strigeid and schistosome furcocercous or plagiorchid xiphidiocercous cercariae, personal communication from K. J. Lie).
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HEYNEMAN, D., UMATHEVY, T. Interaction of Trematodes by Predation within Natural Double Infections in the Host Snail Indoplanorbis exustus. Nature 217, 283–285 (1968). https://doi.org/10.1038/217283a0
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DOI: https://doi.org/10.1038/217283a0
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