Article (Scientific journals)
Characterization of the primary sonic muscles in Carapus acus (Carapidae): a multidisciplinary approach
Parmentier, Eric; Gennotte, Vincent; Focant, Bruno et al.
2003In Proceedings of the Royal Society. Biological Sciences, 270 (1530), p. 2301-2308
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Keywords :
sonic muscle; Carapidae; helix; parvalbumin; myofibrils; ATPase activity
Abstract :
[en] Sound production in carapid fishes results from the action of extrinsic muscles that insert into the swim bladder. Biochemical, histochemical and morphological techniques were used to examine the sonic muscles and compare them with epaxial muscles in Carapus acus. Sonic fibres are thicker than red and thinner than white epaxial fibres, and sonic fibres and myofibrils exhibit an unusual helicoidal organization: the myofibrils of the centre are in a straight line whereas they are more and more twisted towards the periphery. Sonic muscles have both features of red (numerous mitochondria, high glycogen content) and white (alkali-stable ATPase) fibres. They differ also in the isoforms of the light chain (LC3) and heavy chain (HC), in having T tubules at both the Z-line and the A–I junction and in a unique parvalbumin isoform (PAI) that may aid relaxation. All these features lead to the expression of two assumptions about sound generation: the sonic muscle should be able to perform fast and powerful contractions that provoke the forward movement of the forepart of the swim bladder and the stretching and ‘flapping’ of the swim bladder fenestra; the helicoidal organization allows progressive drawing of the swim bladder fenestra which emits a sound when rapidly released in a spring-like manner.
Disciplines :
Zoology
Author, co-author :
Parmentier, Eric  ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Morphologie fonctionnelle et évolutive
Gennotte, Vincent ;  Université de Liège - ULiège > Centre de formation et de recherche en aquaculture (CEFRA)
Focant, Bruno ;  Université de Liège - ULiège
Goffinet, Gerhard ;  Université de Liège - ULiège > Services généraux (Faculté des sciences) > Relations académiques et scientifiques (Sciences)
Vandewalle, Pierre ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Morphologie fonctionnelle et évolutive
Language :
English
Title :
Characterization of the primary sonic muscles in Carapus acus (Carapidae): a multidisciplinary approach
Publication date :
07 November 2003
Journal title :
Proceedings of the Royal Society. Biological Sciences
ISSN :
0962-8452
eISSN :
1471-2954
Publisher :
Royal Soc London, London, United Kingdom
Volume :
270
Issue :
1530
Pages :
2301-2308
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
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