Female discharges are more electrifying: spontaneous preference in the electric fish, Eigenmannia (Gymnotiformes, Teleostei)

URN to cite this document:: urn:nbn:de:bvb:355-epub-21181
DOI to cite this document:: 10.5283/epub.2118

Kramer, Bernd ; Otto, Brunhilde

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Date of publication of this fulltext: 05 Aug 2009 13:36

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Abstract

The tropical South American teleost Eigenmannia lineata showed a spontaneous preference for the female type, compared with the male type, of its sexually dimorphic, weak-electric organ discharge (EOD). Female and male EODs differ in waveform and harmonic content. An isolated fish was simultaneously stimulated with digitally synthesized "natural" male and female EODs of equal peak-to-peak ...