Relative resting oxygen uptake as a function of temperature in different invertebrates and teleost fish. Resting oxygen uptake was set to 100% at the temperature where it was highest. Data are from the same data sets and grouped as in the panels of Fig. 2. Different symbols represent gastropods (upright triangles), crustaceans (inverted triangles), bivalves (hexagons), cephalopods (circled crosses) and teleost fish (circles), because these were the only taxonomic groups for which data were available. Continuous lines represent acclimated individuals (minimum of 7 days at each temperature), whereas dashed lines represent acute measurements (from 30 min to 5.5 days). Multiple lines of the same colours represent different studies on the same species or studies on different populations of the same species. Symbol size reflects sample size at each temperature (<5 = small, 5–10 = medium and >10 = large). For most species, the temperature range over which aerobic scope was measured is representative for the temperatures at which the species occurs, or even up to critical temperatures. Species for which the relevance of the tested temperature range is unclear are indicated by ‘•’. Species for which routine rather than resting oxygen uptake was measured are indicated by ‘©’. The complete data set and reference details are available in Supplementary Table ST1.