|Reference : Agonistic sounds in the clownfish Amphiprion clarkii: implication of the swimbladder in ...|
|Scientific congresses and symposiums : Poster|
|Life sciences : Zoology|
|Agonistic sounds in the clownfish Amphiprion clarkii: implication of the swimbladder in the sound-producing mechanism|
|Colleye, Orphal [Université de Liège - ULg > Département de Biologie, Ecologie et Evolution > Morphologie fonctionnelle et évolutive >]|
|Nakamura, Masaru [Sesoko Station - Tropical Biosphere Research Center > > > >]|
|Parmentier, Eric [Université de Liège - ULg > Département de Biologie, Ecologie et Evolution > Morphologie fonctionnelle et évolutive >]|
|16th Benelux Congress of Zoology|
|du 28 octobre au 30 octobre 2009|
|The Royal Belgian Zoological Society|
|[en] Pomacentridae ; clownfish ; sound production ; swimbladder|
|[en] Clownfishes are aggressive fishes that use sound production to defend their anemone territory. It has been shown that they produce agonistic sounds using a jaw teeth snapping. At present, this mechanism has highlighted the onset of the sound but has not explained yet which structure is responsible for the sound modulation. Interestingly, some acoustic features such as dominant frequency and pulse duration are directly related to fish size. Such variations are linked to a morphological constraint. Also, the existent relationship between fish size and swimbladder size implies that the swimbladder might be involved in the sound production.
Sound analyses in Amphiprion clarkii showed that the experimental filling of the swimbladder with physiological liquid (NaCl 9‰) significantly modified the acoustic features. The most striking changes were a significant increase in dominant frequency and a significant decrease in pulse duration. These observations highlighted the implication of the swimbladder in sound modulation.
In clownfishes, dominant frequency and pulse duration are morphologically determined signals. The swimbladder appears to modulate these acoustic features by acting as a resonant chamber.
|Laboratoire de Morphologie Fonctionnelle et Evolutive|
|Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS ; Communauté française de Belgique - CfB|
|Researchers ; Professionals ; Students|
|File(s) associated to this reference|
All documents in ORBi are protected by a user license.