Journal
JOURNAL OF FISH BIOLOGY
Volume 69, Issue 6, Pages 1885-1891Publisher
BLACKWELL PUBLISHING
DOI: 10.1111/j.1095-8649.2006.01242.x
Keywords
development; exercise; hypoxia; plasticity; zebrafish
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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. (c) 2006 The Authors.
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