Table 1.

. | Pw_{O2} (mmHg). | . | . | ||
---|---|---|---|---|---|

. | 140 (normoxia) . | 100 . | 75 . | ||

Prm_{O2} (mmHg) | 61±10^{a} | 51±6^{b} | 41±5^{c} | ||

Pa_{O2} (mmHg) | 119±5^{d} | 84±2^{e} | 61±3^{a,b} | ||

Pa_{O2}—Prm_{O2}(mmHg) | 58±10^{a} | 33±6^{b} | 20±4^{c} | ||

Change in Prm_{O2} from normoxia (%) | - | -13±7^{a} | -29±8^{b} | ||

Change in Pa_{O2} from normoxia (%) | - | -29±3^{b} | -48±3^{c} |

. | Pw_{O2} (mmHg). | . | . | ||
---|---|---|---|---|---|

. | 140 (normoxia) . | 100 . | 75 . | ||

Prm_{O2} (mmHg) | 61±10^{a} | 51±6^{b} | 41±5^{c} | ||

Pa_{O2} (mmHg) | 119±5^{d} | 84±2^{e} | 61±3^{a,b} | ||

Pa_{O2}—Prm_{O2}(mmHg) | 58±10^{a} | 33±6^{b} | 20±4^{c} | ||

Change in Prm_{O2} from normoxia (%) | - | -13±7^{a} | -29±8^{b} | ||

Change in Pa_{O2} from normoxia (%) | - | -29±3^{b} | -48±3^{c} |

*P*rm_{O2}, partial pressure of O_{2} in the red muscle; *P*a_{O2}, partial pressure of O_{2} in arterial blood; *P*w_{O2}, water *P*_{O2}.

All values are means ± s.e.m., *N*=6.

The *P*rm_{O2} value for each fish,used to derive the mean value shown here, was calculated as the mean of 30 measurements made every 1 min during either normoxia or either level of hypoxia, whereas the *P*a_{O2} for each fish was calculated as the average of two measurements, made at the beginning and end of the 30 min period (see text for further details).

The *P*a_{O2}—*P*rm_{O2}is the partial pressure gradient between arterial blood and the RM.

For the *P*a_{O2} and *P*rm_{O2} data, a common superscript indicates no significant difference by two-way repeated-measures ANOVA with Bonferroni *post-hoc* comparisons amongst means. The same ANOVA was performed on the % change data, following their arc-sine transformation.

For the *P*a_{O2}—*P*rm_{O2}data, a common superscript indicates no significant difference by one-way repeated-measures ANOVA with Bonferroni *post-hoc* comparisons amongst means.

In all cases, significance was attributed at *P*<0.05.

This site uses cookies. By continuing to use our website, you are agreeing to our privacy policy.