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| Peruzzi, Stefano; Westgaard, Jon-ivar; Chatain, Beatrice. |
| Although the actiology of swimbladder inflation anomalies in important aquaculture species such as European sea bass D. labrax is not fully determined, culture conditions are commonly suggested as main contributory factors. Little information is available on whether swimbladder inflation has a genetic basis for its expression too. In this work, 24 full-sibling sea bass families from a 4 dams x 6 sires factorial crossing were reared under communal conditions. The larvae developing normal and abnormal (uninflated or hyper-inflated) swimbladders were genotyped at four microsatellite loci, Labrax-3, Labrax-13, Labrax-17, Labrax29, and allocated to the individual breeders. Out of 273 offspring, 97% could be assigned to a single parental pair. The genotype and... |
| Tipo: Text |
Palavras-chave: Dicentrarchus labrax; Sea bass; Genetics; Anomalies; Swimbladder. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-2590.pdf |
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| Parmentier, E; Lagardere, Jean-paul; Braquegnier, J; Vandewalle, P; Fine, M. |
| Fish sonic swimbladder muscles are the fastest muscles in vertebrates and have fibers with numerous biochemical and structural adaptations for speed. Carapid fishes produce sounds with a complex swimbladder mechanism, including skeletal components and extrinsic sonic muscle fibers with an exceptional helical myofibrillar structure. To study this system we stimulated the sonic muscles, described their insertion and action and generated sounds by slowly pulling the sonic muscles. We find the sonic muscles contract slowly, pulling the anterior bladder and thereby stretching a thin fenestra. Sound is generated when the tension trips a release system that causes the fenestra to snap back to its resting position. The sound frequency does not correspond to the... |
| Tipo: Text |
Palavras-chave: Swimbladder; Sonic mechanism; Sonic muscle; Sound production; Carapidae. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-7353.pdf |
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