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Research Article
Juvenile sturgeon exhibit reduced physiological responses to exercise
James D. Kieffer, Andrea M. Wakefield, Matthew K. Litvak
Journal of Experimental Biology 2001 204: 4281-4289;
James D. Kieffer
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Andrea M. Wakefield
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Matthew K. Litvak
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    Fig. 1.

    Rates of oxygen consumption (ṀO2; A) and net ammonia excretion (B) prior to and following exhaustive exercise in shortnose and Atlantic sturgeon. Asterisks denote significant differences (P<0.05) from resting values (C), and a dagger indicates a significant difference (P<0.05) between shortnose and Atlantic sturgeon at a particular sampling time. Negative values indicate net ammonia losses from the fish (net efflux). Values are means ± s.e.m. (N=8, for each species for ṀO2; N=6 for each species for ammonia excretion).

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    Fig. 2.

    Phosphocreatine (PCr; A) and glycogen (B) concentrations (μmol g–1) in the muscle of shortnose sturgeon at rest (C) and following 0, 1, 2 and 6 h of recovery after exhaustive exercise. An asterisk denotes a significant difference (P<0.05) from the resting value. Values are means + s.e.m. (N=7–11).

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    Fig. 3.

    Lactate (A), pyruvate (B) and glucose (C) concentrations (μmol g–1) in the muscle of shortnose sturgeon at rest (C) and following 0, 1, 2 and 6 h of recovery after exhaustive exercise. An asterisk denotes a significant difference (P<0.05) from resting values. Values are means + s.e.m. (N=7–11).

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    Fig. 4.

    Lactate concentration (mmol l–1) (A) and osmolality (mosmol kg–1) (B) in the plasma of shortnose sturgeon at rest (C) and following 0, 2 and 6 h of recovery after exhaustive exercise. An asterisk denotes a significant difference (P<0.05) from the resting value. Values are means + s.e.m. (N=5–7).

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Research Article
Juvenile sturgeon exhibit reduced physiological responses to exercise
James D. Kieffer, Andrea M. Wakefield, Matthew K. Litvak
Journal of Experimental Biology 2001 204: 4281-4289;
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Research Article
Juvenile sturgeon exhibit reduced physiological responses to exercise
James D. Kieffer, Andrea M. Wakefield, Matthew K. Litvak
Journal of Experimental Biology 2001 204: 4281-4289;

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