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Bioacoustics Article in J Mammalogy 87(2)

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Subject: Bioacoustics Article in J Mammalogy 87(2)
From: "Brian R. Mitchell" <>
Date: Mon, 1 May 2006 11:58:40 EDT
The following article appears in J Mammalogy 87(2). Subscribers to this list 
can download a copy from
http://www.uvm.edu/~bmitchel/Bioacoustics.html

Macias, Silvio, Emanuel C. Mora, and Adianez Garcia, 2006. Acoustic 
identification of Mormoopid bats: A survey during the evening exodus. Journal 
of Mammalogy 87(2):324-330.

Echolocation calls emitted by the 4 species of Cuban mormoopid bats were 
compared to determine vocal signatures that enable identification of each 
species in the field during their evening exodus. Echolocation calls produced 
by Mormoops blainvilli are downward frequency-modulated (FM) signals in the 
range of 68.4?52.5 kHz. Echolocation calls emitted by Pteronotus macleayii and 
P. quadridens have a similar design consisting of a short constant-frequency 
(CF) segment followed by a downward FM segment. The CF segment was at 70.0 kHz 
in calls from P. macleayii, and at 83.3 kHz in calls from P. quadridens. 
Echolocation calls from P. parnellii consist of a long CF segment, which is 
preceded by a short initial upward sweep and followed by a downward FM terminal 
sweep. The CF value of the 2nd harmonic was a good parameter for species 
identification. The features of the echolocation calls of each of the species 
were used to identify them during the evening exodus from 2 Cuban caves.

Key words: echolocation, evening exodus, identification, mormoopid bats

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