Especificidade das descargas do órgão elétrico em espécies de Gimnotóides simpátricos do rio Negro

Summary

Electric organ discharges (EODs) of six sympatric, mud-dwelling gymnotoid fish species of the Rio Negro occupy non-overlapping ranges of peak power frequencies and repetition rates (fig. 4). Since electro-receptors are known to be most sensitive at the species' peak power frequency the evolution of EODs with species specific spectra should minimize species "cross talk" in social communication.