... figures, mean and s.e.m. are shown. Fig. 1. Media PO2. (A) PO2 at various distances from the media surface (0 mm depth) measured 1, 2, 3 and 4 days after egg collection for a 35 ml vial with 50 eggs. Above the media, PO2 of the air was near 21 kPa regardless of day. On days 3 and 4, media PO2 fell...

...) minimum venous Hb saturation ( S O 2 ) and (D) end-of-dive (final) venous S O 2   versus dive duration. Fig. 2. (A) Minimum venous partial pressure of O2 (PO2), (B) end-of-dive (final) venous PO2, (C) minimum venous Hb saturation (SO2) and (D) end-of-dive (final) venous SO2 versus dive duration...

... penguins (EP). S O 2 was determined at pH 7.5 throughout the entire dive to maintain consistency and to provide a conservative estimate of continuous S O 2 . Note the variability of the S v,O 2 profile among different dives. Fig. 3. Comparisons of the Sv,O2 profile [based on PO2 profiles from...

... (A) and maximum depth (B) histograms of dives of emperor penguins equipped with backpack intravascular PO2 recorders (N=142). Blood temperatures during dives were similar to those recorded in previous studies ( Ponganis et al.,2004 ; Ponganis et al.,2003 ). Final temperatures recorded during the last 15 s...

... for linear depletion of O 2 content: y =–2.34 x +27.2( r 2 =0.68, N =82, P <0.0001). Fig. 1. Changes in arterial PO2 (A) and O2 content (B) as a function of time into apnea. Points in A and B are individual blood samples from five seals (see Table 2 for labels of individual seals). (A) Equation...