Comparison of pre-winter thermal sensitivity of CO2 production by Erynnis propertius among treatment groups.

All models use the general form of Model 5 (Table 2). An overall scaling factor (S) and minimum life-supporting metabolic rate (Lmet) were estimated from Model 5, while temperature-scaling (Ts) was estimated for the experimental groups separately or together. GNME: Generalized nonlinear Mixed Effects model (with Ts and S as fixed effects). GN: Generalized Nonlinear model. AIC: Akaike's Information criterion. df: degrees of freedom. The model with the lowest AIC is in bold type, and coefficients from this model were used in subsequent analyses. Different superscript letters indicate generalized nonlinear models that significantly differ in explanatory power (ps differs significantly from 0.