Thermally induced phenotypic plasticity of swimming performance in European sea bass Dicentrarchus labrax juveniles

TitleThermally induced phenotypic plasticity of swimming performance in European sea bass Dicentrarchus labrax juveniles
Publication TypeJournal Article
Year of Publication2009
AuthorsKoumoundouros, G, Ashton C, Sfakianakis DG, Divanach P, Kentouri M, Anthwal N, Stickland NC
JournalJournal of Fish Biology
Volume74
Issue6
Pages1309 - 1322
KeywordsCritical swimming speed, Ontogeny, Red muscle, Water temperature
Abstract

The vulnerability of embryonic and larval stages of European sea bass Dicentrarchus labrax to environmental temperature and the longer-term consequences for the early juveniles was demonstrated. This phenotypic plasticity was highlighted by subjecting D. labrax at 15·2 ± 0·3 or 20·0 ± 0·4° C (mean ± s.d.) up to metamorphosis and then at the same temperature (18·5 ± 0·7° C). After 4-6 weeks at the same temperature, the measurement of critical swimming speed at four exercise temperatures (15, 20, 25 and 28° C) showed a significantly higher swimming capacity in the fish initially reared at 15° C than for fish initially reared at 20° C. This performance was correlated with significant differences in the phenotype of red muscle. Thermally induced phenotypic plasticity was clearly demonstrated as an important mechanism controlling swimming performance in early juveniles of D. labrax. © 2009 The Fisheries Society of the British Isles.

URLhttp://www.scopus.com/inward/record.url?eid=2-s2.0-64249091134&partnerID=40&md5=513b8d48ed16d733b98f758f1b0ba3f2

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