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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