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The effects of flood and drought on the intensity of infestation of Lemaea cyprinacea in a fish community were analysed during a hydrological cycle in an intermittent stream of the Brazilian semi-arid region. Infestation byL. cyprinacea was only observed during the wet and drying phases, and the number of parasitized fishes were higher during the drying phase, when the pool size had decreased. During...
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