| Autor: |
Eric Parmentier, Kai‐Yun Tsai, Pai-Ho Chiu, Hin-Kiu Mok, Michael L. Fine |
| Rok vydání: |
2011 |
| Předmět: |
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| Zdroj: |
The Journal of the Acoustical Society of America. 129:2434-2434 |
| ISSN: |
0001-4966 |
| Popis: |
Little is known about evolution of swimbladder sound production in fishes. Typical fish sound production utilizes fast muscles that drive the swimbladder to produce sound as a forced but rapidly‐damping response; a muscle contraction rate of 200 times/s will generate a sound with a fundamental frequency of 200 Hz. Recently, slow muscles have been demonstrated in a carapid fish. These muscles slowly extend the anterior swimbladder by stretching a swimbladder fenestra until the bladder snaps back exciting sound production. Here we describe sounds produced by a similar but phylogenetically‐unrelated mechanism in a perciform fish. A pair of extrinsic sonic muscles originates on the pterotic bones and inserts on the anterodorsal swimbladder just forward of a stretchable swimbladder fenestra. A fan‐shaped tendon that ends in a smooth muscle attaches to the bladder just forward of the fenestra. The tendon‐smooth muscle pair will be stretched by contraction of the rostral sonic muscles. Strain energy stored in th... |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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