Document Detail

Effects of competitive prey capture on flight behavior and sonar beam pattern in paired big brown bats, Eptesicus fuscus.
MedLine Citation:
PMID:  20833928     Owner:  NLM     Status:  MEDLINE    
Foraging and flight behavior of echolocating bats were quantitatively analyzed in this study. Paired big brown bats, Eptesicus fuscus, competed for a single food item in a large laboratory flight room. Their sonar beam patterns and flight paths were recorded by a microphone array and two high-speed cameras, respectively. Bats often remained in nearly classical pursuit (CP) states when one bat is following another bat. A follower can detect and anticipate the movement of the leader, while the leader has the advantage of gaining access to the prey first. Bats in the trailing position throughout the trial were more successful in accessing the prey. In this study, bats also used their sonar beam to monitor the conspecific's movement and to track the prey. Each bat tended to use its sonar beam to track the prey when it was closer to the worm than to another bat. The trailing bat often directed its sonar beam toward the leading bat in following flight. When two bats flew towards each other, they tended to direct their sonar beam axes away from each other, presumably to avoid signal jamming. This study provides a new perspective on how echolocating bats use their biosonar system to coordinate their flight with conspecifics in a group and how they compete for the same food source with conspecifics.
Chen Chiu; Puduru Viswanadha Reddy; Wei Xian; Perinkulam S Krishnaprasad; Cynthia F Moss
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Journal of experimental biology     Volume:  213     ISSN:  1477-9145     ISO Abbreviation:  J. Exp. Biol.     Publication Date:  2010 Oct 
Date Detail:
Created Date:  2010-09-13     Completed Date:  2011-01-12     Revised Date:  2013-05-28    
Medline Journal Info:
Nlm Unique ID:  0243705     Medline TA:  J Exp Biol     Country:  England    
Other Details:
Languages:  eng     Pagination:  3348-56     Citation Subset:  IM    
Department of Psychology, University of Maryland, College Park, MD 20742, USA.
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MeSH Terms
Behavior, Animal / physiology
Chiroptera / physiology*
Echolocation / physiology*
Flight, Animal / physiology*
Predatory Behavior / physiology
Grant Support
Comment In:
J Exp Biol. 2010 Dec 15;213(Pt 24):4123   [PMID:  21112991 ]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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