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  No evidence for spectral jamming avoidance in echolocation behavior of foraging pipistrelle bats

Gotze, S., Koblitz, J. C., Denzinger, A., & Schnitzler, H. U. (2016). No evidence for spectral jamming avoidance in echolocation behavior of foraging pipistrelle bats. Scientific Reports, 6: 30978. doi:10.1038/srep30978.

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Gotze, S., Author
Koblitz, Jens C.1, Author              
Denzinger, A., Author
Schnitzler, H. U., Author
Affiliations:
1BioAcoustics Network, ou_persistent22              

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 Abstract: Frequency shifts in signals of bats flying near conspecifics have been interpreted as a spectral jamming avoidance response (JAR). However, several prerequisites supporting a JAR hypothesis have not been controlled for in previous studies. We recorded flight and echolocation behavior of foraging Pipistrellus pipistrellus while flying alone and with a conspecific and tested whether frequency changes were due to a spectral JAR with an increased frequency difference, or whether changes could be explained by other reactions. P. pipistrellus reacted to conspecifics with a reduction of sound duration and often also pulse interval, accompanied by an increase in terminal frequency. This reaction is typical of behavioral situations where targets of interest have captured the bat's attention and initiated a more detailed exploration. All observed frequency changes were predicted by the attention reaction alone, and do not support the JAR hypothesis of increased frequency separation. Reaction distances of 1-11 m suggest that the attention response may be elicited either by detection of the conspecific by short range active echolocation or by long range passive acoustic detection of echolocation calls.

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 Dates: 2016-08-09
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Type: -
 Identifiers: Other: WOS:000381024400001
DOI: 10.1038/srep30978
ISSN: 2045-2322
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Title: Scientific Reports
  Abbreviation : Sci. Rep.
Source Genre: Journal
 Creator(s):
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Publ. Info: London, UK : Nature Publishing Group
Pages: - Volume / Issue: 6 Sequence Number: 30978 Start / End Page: - Identifier: ISSN: 2045-2322
CoNE: https://pure.mpg.de/cone/journals/resource/2045-2322