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Laboratory food patch exploitation in the algae eater gyrinocheilus ayomonieri pisces cypriniformes



Laboratory food patch exploitation in the algae eater gyrinocheilus ayomonieri pisces cypriniformes



Biology of Behaviour 7(2): 109-118



In experiment I, algae-eaters fed on green and blue-green algae; in experiment II they fed on 2 densities of the green alga. No preferences existed between algal types but the low density was preferred to the high, the strength of the preference varying with the size of the fish. Individual variation was seen in the number of switches between algal patches and number of bouts per visit. Bite rate did not vary over the 30 min feeding period. A bout of bites was equally likely to be terminated at any point after the first couple of bites. This was not the case with the intervals between bouts or the number of bouts per visit to a slide; short intervals and single-bout visits were more common than would be expected at random.

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