Low-frequency echolocation enables the bat Tadarida teniotis to feed on tympanate insects.
Proc Biol Sci
; 257(1349): 175-8, 1994 Aug 22.
Article
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| MEDLINE
| ID: mdl-7972162
The European free-tailed bat, Tadarida teniotis, forages in uncluttered airspace by using intense narrow-band echolocation calls with low frequency (11-12 kHz), and feeds on relatively large flying insects, mainly (90% by volume) of the tympanate orders Lepidoptera and Neuroptera. The use of low-frequency echolocation calls without strong harmonics appears to be a specialization for long-range detection of large, tympanate insects, which are less well represented in the diet of most other aerial-hawking bats. The results provide evidence in support of the allotonic frequency hypothesis, i.e. that use of echolocation calls with frequencies above or below the best hearing of tympanate insects is an adaptation to increase the availability of these insects.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Quirópteros
Límite:
Animals
Idioma:
En
Revista:
Proc Biol Sci
Asunto de la revista:
BIOLOGIA
Año:
1994
Tipo del documento:
Article
Pais de publicación:
Reino Unido