Journal
JOURNAL OF FISH BIOLOGY
Volume 71, Issue 2, Pages 399-410Publisher
WILEY
DOI: 10.1111/j.1095-8649.2007.01493.x
Keywords
algivore; by-product benefit; cichlids; Lake Tanganyika; territoriality; zoobenthoseaters
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Underwater observations conducted in the shallow waters of the southern part of Lake Tanganyika showed that a zoobenthos-eating cichlid Neolamprologus mustax preferentially foraged in the permanent territory of an algivorous cichlid Neolamprologus moorii, even though other zoobenthos-eaters were chased out. Benthic invertebrates were much richer within the territory of N. moorii than outside, suggesting that the territory was an attractive feeding ground for zoobenthos-eaters. Stomach contents analysis showed that N. mustax rarely ate fish broods, although other zoobenthos-eaters often did so. It is concluded that the differential tolerance of N. moorii towards zoobenthos-eaters based on their harmfulness to broods benefits harmless N. mustax by allowing its use of the prey-rich territory. (c) 2007 The Authors Journal compilation (c) 2007 The Fisheries Society of the British Isles.
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