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Wiley InterScience

Journal of Fish Biology

Journal of Fish Biology

Volume 69 Issue 6, Pages 1885 - 1891

Published Online: 8 Dec 2006

Journal compilation © 2010 The Fisheries Society of the British Isles



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The effects of chronic developmental hypoxia on swimming performance in zebrafish
S. Widmer, F. B.-G. Moore B. Bagatto†*
  Department of Biology, University of Akron, Akron, OH 44325-3908, U.S.A.
Correspondence to   *Tel.: +1 330 972 2571; fax: +1 330 972 8445; email: bagatto@uakron.edu
Copyright 2006 The Authors Journal compilation
KEYWORDS
development • exercise • hypoxia • plasticity • zebrafish

ABSTRACT

Relative to normoxia-reared fish, hypoxia-reared zebrafish Danio rerio achieved 24·9 and 21·4% slower maximal swim velocities in both normoxic and hypoxic waters, respectively. Hypoxia-reared fish also produced 26·1 and 63·9% less lactate during resting conditions across both normoxic and hypoxic waters, respectively. During exercise, this trend continued as hypoxia-reared fish produced 68·2 and 55·1% less lactate across both normoxic and hypoxic waters, respectively. This reduction in performance, rather than representing a purely pathological (maladaptive) response to hypoxia, appears to represent a fundamental shift in the metabolic response to hypoxia.


(Received 1 September 2005, Accepted 18 July 2006)

DIGITAL OBJECT IDENTIFIER (DOI)
10.1111/j.1095-8649.2006.01242.x About DOI

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