Reference : Further insight into the sound-producing mechanism of clownfishes: what structure is inv...
Scientific journals : Article
Life sciences : Zoology
http://hdl.handle.net/2268/124605
Further insight into the sound-producing mechanism of clownfishes: what structure is involved in sound radiation?
English
Colleye, Orphal mailto [Université de Liège - ULg > Département de Biologie, Ecologie et Evolution > Morphologie fonctionnelle et évolutive >]
Nakamura, Masaru [Sesoko Station - Tropical Biosphere Research Center > > > >]
Frederich, Bruno mailto [Université de Liège - ULg > Département de Biologie, Ecologie et Evolution > Morphologie fonctionnelle et évolutive >]
Parmentier, Eric mailto [Université de Liège - ULg > Département de Biologie, Ecologie et Evolution > Morphologie fonctionnelle et évolutive >]
2012
Journal of Experimental Biology
Company of Biologists
215
2192-2202
Yes
International
0022-0949
1477-9145
Cambridge
United Kingdom
[en] Amphiprion clarkii ; sound production ; swimbladder ; rib cage ; resonance
[en] It was recently demonstrated that clownfishes produce aggressive sounds by snapping their jaw teeth. To date, only the onset of the sound has been studied, which raises the question, what structure is involved in sound radiation? Here, a combination of different approaches has been used to determine the anatomical structure(s) responsible for the size-related variations observed in sound duration and frequency. Filling the swimbladder with physiological liquid specifically modified size-related acoustic features by inducing a significant decrease in pulse duration of approximately 3 ms and a significant increase in dominant frequency of approximately 105 Hz. However, testing the acoustics of the swimbladder by striking it with a piezoelectric impact hammer showed that this structure is a highly damped sound source prevented from prolonged vibrations. In contrast, the resonant properties of the rib cage seems to account for the size-related variations observed in acoustic features. For an equivalent strike on the rib cage, the duration and dominant frequency of induced sounds changed with fish size: sound duration and dominant frequency were positively and negatively correlated with fish size, respectively. Such relationships between sonic features and fish size are consistent with those observed in natural sounds emitted by fish. Therefore, the swimbladder itself does not act as a resonator; its wall just seems to be driven by the oscillations of the rib cage. This set of observations suggests the
need for reassessment of the acoustic role of swimbladders in various fish species.
Applied and Fundamental FISH Research Center - AFFISH-RC
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS ; Communauté française de Belgique - CfB ; Takeda Science Foundation and a 21st Century Center of Excellence project entitled "The Comprehensive Analyses on Biodiversity in Coral Reef and Island Ecosystems in Asian and Pacific Regions"
Researchers ; Professionals ; Students ; General public
http://hdl.handle.net/2268/124605
10.1242/jeb.067124

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Open access
Further insight in the sound-producing mechanism of clownfishes..pdfPublisher postprint1.2 MBView/Open

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.