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Ontogeny of swimming ability in the European Sea Bass Dicentrarchus labrax (Teleostei: Moronidae)

journal contribution
posted on 2023-05-18, 02:54 authored by Jeffrey LeisJeffrey Leis, Balma, P, Ricoux, R, Galzin, R
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.

History

Publication title

Marine Biology Research

Volume

8

Pagination

265-272

ISSN

1745-1000

Department/School

Institute for Marine and Antarctic Studies

Publisher

Taylor & Francis

Place of publication

United Kingdom

Rights statement

Crown Copyright 2012

Repository Status

  • Restricted

Socio-economic Objectives

Marine biodiversity

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