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Sound Production By Some Tanganyikan Cichlid Fishes and a Hypothesis for the Evolution of the r communication Mechanisnis

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I. Sound production is studied in Halochromis murtoni, Simochromis diagramma, S. babatiltz, Tropheus moorii, T. brichardi and T. duboisi (Pisces, Cichlidae). The recorded sounds are analysed and visualized as sonograms. 2. As far as communication is concerned, Tropheus is specialized in sound production while Simochromis is specialized in colour patterns. 3. These ways of evolution from an Haplochromis-like ancestor could be correlated with the fact that Tropheus became night-active, and Simochromis day-active.

Affiliations: 1: Laboratorium voor Algemene Dierkunde, Rijksunivcrsitair Centrum Antwerpen, Belgium


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