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Sound production and mechanism in Heniochus chrysostomus (Chaetodontidae)

Abstract : The diversity in calls and sonic mechanisms appears to be important in Chaetodontidae. Calls in Chaetodon multicinctus seem to include tail slap, jump, pelvic fin flick and dorsal-anal fin erection behaviors. Pulsatile sounds are associated with dorsal elevation of the head, anterior extension of the ventral pectoral girdle and dorsal elevation of the caudal skeleton in Forcipiger flavissiumus. In Hemitaurichthys polylepis, extrinsic swimbladder muscles could be involved in sounds originating from the swimbladder and correspond to the inward buckling of tissues situated dorsally in front of the swimbladder. These examples suggest that this mode of communication could be present in other members of the family. Sounds made by the pennant bannerfish (Heniochus chrysostomus) were recorded for the first time on coral reefs and when fish were hand held. In hand-held fishes, three types of calls were recorded: isolated pulses (51%), trains of four to 11 pulses (19%) and trains preceded by an isolated pulse (29%). Call frequencies were harmonic and had a fundamental frequency between 130 and 180. Hz. The fundamental frequency, sound amplitude and sound duration were not related to fish size. Data from morphology, sound analysis and electromyography recordings highlight that the calls are made by extrinsic sonic drumming muscles in association with the articulated bones of the ribcage. The pennant bannerfish system differs from other Chaetodontidae in terms of sound characteristics, associated body movements and, consequently, mechanism.
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Submitted on : Tuesday, December 27, 2011 - 11:12:49 PM
Last modification on : Wednesday, November 9, 2022 - 1:42:09 PM

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Eric Parmentier, Kelly S Boyle, Laetitia Berten, Christophe Brié, David Lecchini. Sound production and mechanism in Heniochus chrysostomus (Chaetodontidae). Journal of Experimental Biology, 2011, 214 (16), pp.2702-2708. ⟨10.1242/jeb.056903⟩. ⟨hal-00655372⟩



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