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Fig. 1. Ventilation rate (fR) of tambaqui, Colossoma
macropomum, exposed to normoxia (PwO2=140 mmHg at
time zero) and then hypoxia (PwO2=10 mmHg) for 360 min.
Intact (circles; N=10) and denervated fish (squares): (A) cranial
nerves IX+X denervated (N=10), (B) cranial nerve V denervated
(N=10) and (C) cranial nerves V+VII denervated (N=10).
Values are mean ± s.e.m. Open symbols indicate values that are
significantly (P<0.05) different from time zero.
+Intact and denervated fish are significantly different.