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Search image or prey memory extinction. Time to consume (a) and per cent of small prey consumed (b) by brown trout after being deprived of seeing this prey for intervals of 0, 1, 2, 3, 7 and 14 days. Small prey were first instar B. germanica. Fifty large prey (adult B. germanica) were offered each day across the 14 days to maintain trout satiety.
