Fig 1.

Thermal responses in body size (A) and growth rate (B). Responses are indicated for warm (red lines) and cold (blue lines) conditions. Arrows in B indicate that effects of warming are contingent on body size (and hence on time during ontogeny), stimulating growth during small, early life stages (upward arrow), but reducing growth in later, larger life stages (downward arrow). Note that this is a simplified schematic and in reality, the temperature–size rule (TSR) may progress irregularly over ontogeny (see Forster, Hirst, & Atkinson, 2011; Horne et al., 2019).