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Table 1 Multiple-regression model relating poison-gland size with coloration (PCA1 factor), controlling for general body size (PCA2 factor; F 2, 27 = 3.15, p = 0.059, R2= 0.19) and for abdomen width (F 2, 27 = 4.61, p = 0.019, R2= 0.25)

From: Brighter-colored paper wasps (Polistes dominula) have larger poison glands

Effect

Β

F1, 27

P

Controlling for general body size (PCA2)

PCA1

0.41

5.57

0.026

PCA2

0.15

0.73

0.40

Controlling for abdomen width

PCA1

0.35

4.39

0.046

Abdomen width

0.30

3.16

0.087