Fig. 3. Changes in respiratory frequency (f), tidal volume
(VT), minute volume (VMIN) and oxygen
extraction (OEE) throughout acclimation in control (open symbols) and
cold-acclimated individuals (closed symbols). Circles, females; triangles,
males. The broken vertical line indicates the beginning of the
cold-acclimation. Values are means ± S.E.M.