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Ontogeny of swimming ability in the European Sea Bass, Dicentrarchus labrax (L.) (Teleostei: Moronidae)
Leis, J.M.; Balma, P.; Ricoux, R.; Galzin, R. (2012). Ontogeny of swimming ability in the European Sea Bass, Dicentrarchus labrax (L.) (Teleostei: Moronidae). Mar. Biol. Res. 8(3): 265-272. dx.doi.org/10.1080/17451000.2011.616898
In: Marine Biology Research. Taylor & Francis: Oslo; Basingstoke. ISSN 1745-1000, more
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Keywords
    Behaviour; Dispersal phenomena; Juveniles; Larvae; Speed; Dicentrarchus labrax (Linnaeus, 1758) [WoRMS]; Moronidae Jordan & Evermann, 1896 [WoRMS]; Teleostei [WoRMS]; Marine

Authors  Top 
  • Leis, J.M.
  • Balma, P.
  • Ricoux, R.
  • Galzin, R.

Abstract
    Development of critical speed (Ucrit) of reared young Sea Bass [6–63 days after hatch (DAH), 4–30 mm body length (BL)] at 18.5–21°C was measured using a swimming chamber. Critical speed increased from a mean of 2 cm s-1 at 6 DAH to 41 cm s-1 at 63 DAH at a rate of 0.6±0.03 cm s-1 day-1. When based on size (BL), Ucrit increased at a rate of 2.0±0.1 cm s-1 mm-1. Relative speed increased from 4.7 BL s-1 at 6 DAH to 13.1 BL s-1 at 33 DAH, and was thereafter 13.5–15.7 BL s-1. Sea Bass larger than about 11 mm (when the caudal fin forms) swam at Reynolds numbers > 1000, and were thus swimming in an inertial hydrodynamic environment. Sea Bass young swim fast enough from about 15 mm (approx. 27 DAH) to influence dispersal outcomes.

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