Fig. 6. Seasonal development of oxygen consumption of A. marina whole animals (solid line) and gametes (dotted line) adapted from Schöttler (1989). Bars depict oxygen consumption of mitochondrial isolated from winter and summer animals collected from the German Wadden Sea (dark bars) in this study and (light bars) by Sommer and Pörtner (2004). Scaling of the data is the same for all mitochondrial isolates (nmol O mg min^-1 protein^-1), but distinct (µmol O₂ h^-1 g^-1 fresh mass) for whole animal oxygen consumption (solid line) and coelomic fluid (gamete oxygen consumption, dotted line; after Schöttler, 1989) (µmol O₂ h^-1 g fresh mass^-1).