Title |
Echolocation calls of Poey’s flower bat (Phyllonycteris poeyi) unlike those of other phyllostomids
|
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Published in |
The Science of Nature, December 2006
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DOI | 10.1007/s00114-006-0198-7 |
Pubmed ID | |
Authors |
Emanuel C. Mora, Silvio Macías |
Abstract |
Unlike any other foraging phyllostomid bat studied to date, Poey's flower bats (Phyllonycteris poeyi-Phyllostomidae) emit relatively long (up to 7.2 ms), intense, single-harmonic echolocation calls. These calls are readily detectable at distances of at least 15 m. Furthermore, the echolocation calls contain only the first harmonic, which is usually filtered out in the vocal tract of phyllostomids. The foraging echolocation calls of P. poeyi are more like search-phase echolocation calls of sympatric aerial-feeding bats (Molossidae, Vespertilionidae, Mormoopidae). Intense, long, narrowband, single-harmonic echolocation calls focus acoustic energy maximizing range and favoring detection, which may be particularly important for cruising bats, like P. poeyi, when flying in the open. Flying in enclosed spaces, P. poeyi emit short, low-intensity, frequency-modulated, multiharmonic echolocation calls typical of other phyllostomids. This is the first report of a phyllostomid species emitting long, intense, single-harmonic echolocation calls with most energy in the first harmonic. |
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