Evolutionary aspects of bat echolocation

@article{Neuweiler2003EvolutionaryAO,
  title={Evolutionary aspects of bat echolocation},
  author={Gerhard Neuweiler},
  journal={Journal of Comparative Physiology A},
  year={2003},
  volume={189},
  pages={245-256}
}
  • G. Neuweiler
  • Published 28 March 2003
  • Biology
  • Journal of Comparative Physiology A
This review is yet another attempt to explain how echolocation in bats or bat-like mammals came into existence. Attention is focused on neuronal specializations in the ascending auditory pathway of echolocating bats. Three different mechanisms are considered that may create a specific auditory sensitivity to echos: (1) time-windows of enhanced echo-processing opened by a corollary discharge of neuronal vocalization commands; (2) differentiation and expansion of ensembles of combination… 

Neurobiology of echolocation in bats

Neurobiological specializations in echolocating bats.

  • E. Covey
  • Biology
    The anatomical record. Part A, Discoveries in molecular, cellular, and evolutionary biology
  • 2005
Although the bat's nervous system follows the general mammalian plan in both its structure and function, it has undergone a number of modifications associated with flight and echolocation, and certain pathways, mainly those having to do with accurate processing of temporal information and auditory control of motor activity, are hypertrophied and/or organized somewhat differently from those same pathways in nonecholocating species.

The evolution of echolocation in bats: a comparative approach

It was found that early divergences and subsequent constraints in evolutionary history have resulted in a greater variety of bat call structures than appear to be functionally necessary, suggesting that the proto-bat was a slow and manoeuvrable flier with an opportunistic and omnivorous diet.

Duration-sensitive neurons in the inferior colliculus of horseshoe bats: adaptations for using CF-FM echolocation pulses.

Presentation of a CF-FM stimulus improved the duration sensitivity in IC neurons by increasing the ratio of duration-tuned neurons and making them less susceptible to changes in signal intensity.

Auditory opportunity and visual constraint enabled the evolution of echolocation in bats

It is shown that bats’ common ancestor had eyes too small to allow for successful aerial hawking of flying insects at night, but an auditory brain design sufficient to afford echolocation, and that non-echolocating, phytophagous pteropodid bats may retain some of the necessary foundations for biosonar.

Adaptive mechanisms underlying the bat biosonar behavior

  • P. Jen
  • Biology
    Frontiers in Biology
  • 2010
Changing changes in multiple pulse parameters throughout the entire course of hunting enable the bat to extract maximal information about localized prey from the returning echoes.

Evolution of inner ear neuroanatomy of bats and implications for echolocation.

The observation of highly derived structures of the spiral ganglion in yangochiropteran bats: a trans-otic ganglions with a wall-less Rosenthal's canal is reported, providing direct evidence of how Yangchiroptera differentiated from Yinpterochioptera in spiral Ganglion neuroanatomy.

Molecular phylogenetics and the evolution of high-frequency echolocation in horseshoe bats (Genus Rhinolophus)

Five hypotheses that may explain the evolution and divergence of high frequencies in the horseshoe bats are tested and the first prediction that the proportion of tympanate insects will be highest in the diets of bats whose echolocation calls are dominated by frequencies outside the hearing range of moths is supported.
...

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