Skip to main content
. 2008 Dec 15;105(52):20776–20780. doi: 10.1073/pnas.0806886105

Fig. 1.

Fig. 1.

Rhythmic sinusoidal oscillations of oxygen consumption in Dosidicus gigas. (A) An 8.03-g squid at 25°C. (B) A 21.93-g squid at 20°C. (C) A 2.23-g squid at 10°C. Rates are expressed as differences between the oxygen levels (μmol liter−1) recorded at the entrance and the exit of the chamber and oscillations reflect periodic activity peaks as indicated by recorded rates of mantle muscle contraction. Some specimens were exposed to two cycles of CO2 treatment (e.g., in C) to exclude the possibility that the observed trends in oxygen consumption were not driven by decreasing stress or food deprivation after placement in the chamber.