Journal of comparative physiology

, Volume 150, Issue 4, pp 413–418 | Cite as

Behavioral responses of the frog-eating bat,Trachops cirrhosus, to sonic frequencies

  • Michael J. Ryan
  • Merlin D. Tuttle
  • Robert M. R. Barclay


The frog-eating bat,Trachops cirrhosus (Phyllostomatidae), locates frogs by using the frogs' vocalizations and shows a behavioral response to constant frequencies in the sonic range. The minimum intensity needed to elicit a behavioral response to a constant frequency (i.e. threshold intensity) increased as the frequency decreased from 15 kHz to 5 kHz. This is consistent with audiograms of other bats that have been tested in the sonic range. However, the threshold ofT. cirrhosus decreases with frequencies below 5 kHz, which is unusual among bats so far tested in this frequency range. This decreased threshold coincides with the frequencies which characterize frog calls that the bats use to locate their prey.


Behavioral Response Minimum Intensity Threshold Intensity Constant Frequency Sonic Frequency 
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  1. Barclay RMR, Fenton MB, Tuttle MD, Ryan MJ (1981) Echolocation calls produced byTrachops cirrhosus (Chiroptera: Phyllostomatidae) while hunting for frogs. Can J Zool 59:750–753Google Scholar
  2. Bell GP (1982) Behavioral and ecological aspects of gleaning by a desert insectivorous batAntrozous pallidus (Chiroptera: Vespertilionidae). Behav Ecol Sociobiol 10:217–223Google Scholar
  3. Brown PE, Grinnell AD, Harrison JB (1978) Development of hearing in the pallid batAntrozous pallidus. J Comp Physiol 126:169–182Google Scholar
  4. Buchler ER, Childs SB (1981) Orientation to distant sounds by foraging big brown bats (Eptesicus fuscus). Anim Behav 29:428–432Google Scholar
  5. Dalland JI (1965) Hearing sensitivity in bats. Science 150:1185–1186Google Scholar
  6. Fiedler J (1979) Prey capture with and without echolocation in the Indian false vampire bat,Megaderma lyra. Behav Ecol Sociobiol 6:155–160Google Scholar
  7. Griffin D (1958) Listening in the dark. Yale University Press, New HavenGoogle Scholar
  8. Heffner R, Heffner H (1980) Hearing in the elephant (Elephas maximus). Science 208:518–520Google Scholar
  9. Henson OW (1964) Echolocation and hearing in bats with special reference to the function of the middle ear muscles. Ph D thesis, Yale University, New Haven (Connecticut), USAGoogle Scholar
  10. Henson OW (1970) The ear and audition. In: Wimsatt WA (ed) The biology of bats, vol 2. Academic Press, New YorkGoogle Scholar
  11. Loftus-Hills JJ, Johnstone BM (1970) Auditory function, communication, and the brain-evoked response in anuran amphibians. J Acoust Soc Am 47:1131–1138Google Scholar
  12. Long GR, Schnitzler HU (1975) Behavioral audiograms from the bat,Rhinolophus ferrumequinum. J Comp Physiol 100:211–219Google Scholar
  13. Neuweiler G (1968) Neurophysiologische Untersuchungen zum Echoortungssystem der Grossen HufeisennaseRhinolophus ferrumequinum. Z Vergl Physiol 67:273–306Google Scholar
  14. Neuweiler G, Schuller G, Schnitzler HU (1971) On- and off-responses in the inferior colliculus of the greater horseshoe bat to pure tones. Z Vergl Physiol 74:57–63Google Scholar
  15. Pollak G, Henson OW, Novick A (1972) Cochlear microphonic audiograms in the pure tone batChilonycteris parnellii. Science 176:66–68Google Scholar
  16. Rand AS, Ryan MJ (1981) The adaptive significance of a complex vocal repertoire in a neotropical frog. Z Tierpsychol 57:209–214Google Scholar
  17. Ryan MJ, Tuttle MD (in press) The ability of the frog-eating bat to discriminate among novel and potentially poisonous species of frogs using acoustic cues. Anim BehavGoogle Scholar
  18. Ryan MJ, Tuttle MD, Taft LK (1981) The costs and benefits of frog chorusing behavior. Behav Ecol Sociobiol 8:273–278Google Scholar
  19. Ryan MJ, Tuttle MD, Rand AS (1982) Bat predation and sexual advertisement in a neotropical frog. Am Nat 119:136–139Google Scholar
  20. Sales GD (1975) Auditory evoked responses in small mammals. In: Bench RJ, Pye A, Pye JD (eds) Sound reception in mammals. Academic Press, LondonGoogle Scholar
  21. Schuller G (1980) Hearing characteristics and Doppler shift compensation in south Indian CF-FM bats. J Comp Physiol 139:349–356Google Scholar
  22. Simmons JA, Fenton MB, O'Farrell MJ (1979) Echolocation and the pursuit of prey by bats. Science 203:16–21Google Scholar
  23. Suga N, O'Neill WE (1981) Auditory processing of echoes: representation of acoustic information from the environment in the bat cerebral cortex. In: Busnel RG, Fish JF (eds) Animal sonor systems. Plenum Press, New YorkGoogle Scholar
  24. Tuttle MD, Ryan MJ (1981) Bat predation and the evolution of frog vocalizations in the neotropics. Science 214:677–678Google Scholar
  25. Tuttle MD, Ryan MJ, Belwood J (submitted) Acoustical partitioning of resources by two phyllostomatid batsGoogle Scholar
  26. Vernon JA, Peterson E (1966) Hearing in the vampire bat,Desmodus rotundus, as shown by cochlear potentials. J Aud Res 6:153–163Google Scholar

Copyright information

© Springer-Verlag 1983

Authors and Affiliations

  • Michael J. Ryan
    • 1
    • 2
  • Merlin D. Tuttle
    • 3
  • Robert M. R. Barclay
    • 4
  1. 1.Section of Neurobiology and BehaviorCornell UniversityIthacaUSA
  2. 2.Smithsonian Tropical Research InstituteBalboa
  3. 3.Vertebrate DivisionMilwaukee Public MuseumMilwaukeeUSA
  4. 4.Department of BiologyCarelton UniversityOttawaCanada

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