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Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Proc+Natl+Acad+Sci+U+S+A 2015 ; 112 (26): 8118-23 Nephropedia Template TP
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Dynamics of the echolocation beam during prey pursuit in aerial hawking bats #MMPMID26080398
Jakobsen L; Olsen MN; Surlykke A
Proc Natl Acad Sci U S A 2015[Jun]; 112 (26): 8118-23 PMID26080398show ga
Many insects have evolved ultrasonic ears to detect and evade hunting bats, performing dramatic escape maneuvers in response to intense ultrasound. Presumably as a response, some bats broaden their echolocation beam in close proximity to insects to keep track of them at large off-axis angles. Here, we investigated if beam broadening is a general property of echolocation when hunting moving prey. The results show that emballonurid bats ensonify a wide area during pursuit, not by broadening the beam but by emitting high-intensity calls throughout pursuit. Thus, beam broadening is not a general property of echolocation, but we hypothesize that maintaining a broad acoustic field of view is crucial for all echolocators hunting moving prey.