Size-scaling exponents of metabolism and shell mass in slow-growing control and fast-growing size-selected lines of Helix aspersa snails
| . | Metabolism × whole body mass . | . | Metabolism × flesh mass . | . | Shell mass × flesh mass . | . | |||
|---|---|---|---|---|---|---|---|---|---|
| Growth phase: . | Fast . | Slow . | Fast . | Slow . | Fast . | Slow . | |||
| Control line | 0.9162±0.1072 | 0.7459±0.2222 | 0.8337±0.1086 | 0.7373±0.2142 | 0.7176±0.0675 | 1.0207±0.2163 | |||
| Size-selected line | 1.0316±0.0823 | 0.7360±0.2604 | 0.9688±0.0798 | 0.7094±0.2687 | 0.7939±0.0560 | 0.9845±0.1737 | |||
| . | Metabolism × whole body mass . | . | Metabolism × flesh mass . | . | Shell mass × flesh mass . | . | |||
|---|---|---|---|---|---|---|---|---|---|
| Growth phase: . | Fast . | Slow . | Fast . | Slow . | Fast . | Slow . | |||
| Control line | 0.9162±0.1072 | 0.7459±0.2222 | 0.8337±0.1086 | 0.7373±0.2142 | 0.7176±0.0675 | 1.0207±0.2163 | |||
| Size-selected line | 1.0316±0.0823 | 0.7360±0.2604 | 0.9688±0.0798 | 0.7094±0.2687 | 0.7939±0.0560 | 0.9845±0.1737 | |||
Exponent values are shown with ±confidence intervals and were calculated separately for the fast-growth phase of ontogeny (growth rate accelerates with age) and for the slow-growth phase (growth rate decelerates with age). The exponents are slopes of log10–log10regressions of metabolism or shell mass versus body size measure