marginally non-significantP = 0.056
A General Linear Model with (1) mean heart rate as a continuous predictor, (2) snout-vent length and body mass at birth as dependent variables, and (3) embryo positioning and clutch of origin as categorical predictors yielded a marginally non-significant effect of embryo positioning F 2, 38 = 3.11; P = 0.056—see Fig. 5 ).