Infrasonic and Ultrasonic Hearing Evolved after the Emergence of Modern Whales

  title={Infrasonic and Ultrasonic Hearing Evolved after the Emergence of Modern Whales},
  author={Micka{\"e}l J. Mourlam and Maeva J Orliac},
  journal={Current Biology},
Mysticeti (baleen whales) and Odontoceti (toothed whales) today greatly differ in their hearing abilities: Mysticeti are presumed to be sensitive to infrasonic noises [1-3], whereas Odontoceti are sensitive to ultrasonic sounds [4-6]. Two competing hypotheses exist regarding the attainment of hearing abilities in modern whales: ancestral low-frequency sensitivity [7-13] or ancestral high-frequency sensitivity [14, 15]. The significance of these evolutionary scenarios is limited by the… CONTINUE READING
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