English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Range-dependent flexibility in the acoustic field of view of echolocating porpoises (Phocoena phocoena)

Wisniewska, D. M., Ratcliffe, J. M., Beedholm, K., Christensen, C. B., Johnson, M., Koblitz, J. C., et al. (2015). Range-dependent flexibility in the acoustic field of view of echolocating porpoises (Phocoena phocoena). eLife, 4: e05651. doi:10.7554/eLife.05651.

Item is

Basic

show hide
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Wisniewska, D. M., Author
Ratcliffe, J. M., Author
Beedholm, K., Author
Christensen, C. B., Author
Johnson, M., Author
Koblitz, Jens C.1, Author              
Wahlberg, M., Author
Madsen, P. T., Author
Affiliations:
1University of Tübingen, ou_persistent22              

Content

show
hide
Free keywords: -
 Abstract: Toothed whales use sonar to detect, locate, and track prey. They adjust emitted sound intensity, auditory sensitivity and click rate to target range, and terminate prey pursuits with high-repetition-rate, low-intensity buzzes. However, their narrow acoustic field of view (FOV) is considered stable throughout target approach, which could facilitate prey escape at close-range. Here we show that, like some bats, harbour porpoises can broaden their biosonar beam during the terminal phase of attack but, unlike bats, maintain the ability to change beamwidth within this phase. Based on video, MRI, and acoustic-tag recordings, we propose this flexibility is modulated by the melon and implemented to accommodate dynamic spatial relationships with prey and acoustic complexity of surroundings. Despite independent evolution and different means of sound generation and transmission, whales and bats adaptively change their FOV, suggesting that beamwidth flexibility has been an important driver in the evolution of echolocation for prey tracking.

Details

show
hide
Language(s):
 Dates: 2015-03-20
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: Other: WOS:000351866300003
DOI: 10.7554/eLife.05651
ISSN: 2050-084X
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: eLife
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Cambridge : eLife Sciences Publications
Pages: - Volume / Issue: 4 Sequence Number: e05651 Start / End Page: - Identifier: ISSN: 2050-084X
CoNE: https://pure.mpg.de/cone/journals/resource/2050-084X