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Fig. 4 | Frontiers in Zoology

Fig. 4

From: Physiological predictors of reproductive performance in the European Starling (Sturnus vulgaris)

Fig. 4

Few associations between physiological summary variables (DM) and reproductive performance. We performed regression models to evaluate the effect of different DM versions, excluding reticulocytes or not (n = 104 and 80 respectively), on each performance measure, using observations during the incubation stage (upper panel), the chick-rearing stage (middle panel), or the mean of all available observations within a year (lower panel). DM v0 was calculated using the mean as the centroid for each biomarker, DM v1-v4 represent versions based on a priori hypotheses, either using the mean + 3 standard deviations (high) or the mean – 3 standard deviations (low), and DM v5 was generated by random choice of mean, high (mean + 3 standard deviations), or low (mean - 3 standard deviations) for the centroid definition (see Additional file 1 for details). Height of the horizontal line in the box represents the effect size and the color underneath is blue for positive effects and red for negative ones, with color hue illustrative of p-values (darker shades for lowest p-values). Non-significant coefficients are marked with an “X”

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