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

Götze, Simone; Koblitz, Jens C.; Denzinger, Annette; Schnitzler, Hans-Ulrich

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

Files

Götze_2-b8wepp990ou48.pdf(3.32 MB)

Date

2016

Authors

Götze, Simone

Koblitz, Jens C.

Denzinger, Annette

Schnitzler, Hans-Ulrich

Publication type

Journal article

Publication status

Published

Published in

Scientific reports ; 6 (2016). - 30978. - Springer Nature. - eISSN 2045-2322

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.

Subject (DDC)

570 Biosciences, Biology

Cite This

ISO 690

GÖTZE, Simone, Jens C. KOBLITZ, Annette DENZINGER, Hans-Ulrich SCHNITZLER, 2016. No evidence for spectral jamming avoidance in echolocation behavior of foraging pipistrelle bats. In: Scientific reports. Springer Nature. 6, 30978. eISSN 2045-2322. Available under: doi: 10.1038/srep30978

BibTex

@article{Gotze2016evide-50704,
  year={2016},
  doi={10.1038/srep30978},
  title={No evidence for spectral jamming avoidance in echolocation behavior of foraging pipistrelle bats},
  volume={6},
  journal={Scientific reports},
  author={Götze, Simone and Koblitz, Jens C. and Denzinger, Annette and Schnitzler, Hans-Ulrich},
  note={Article Number: 30978}
}

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Refereed

Yes