Adaptive shift of active electroreception in weakly electric fish for troglobitic life
Daphne Soares,
Kathryn Gallman,
Maria Elina Bichuette
et al.
Abstract:The adaptive-shift hypothesis for the evolution of cave-dwelling species posits that ancestor species in surface habitats had exaptations for subterranean life that were exploited when individuals invaded caves. Weakly electric Gymnotiform fishes, nocturnal South American teleost fishes, have features that appear to be likely exaptations for troglobitic life. These fishes have active electrosensory systems in which fish generate weak electric fields that are detected by specialized electroreceptors. Gymnotifor… Show more
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