Are antimicrobial defences in bird eggs related to climatic conditions associated with risk of trans-shell microbial infection?

Table 2 Results of model averaging

			95% CI
Response variable	Model average parameters	Estimate (se)	Lower	Upper	Relative variable importance
Lysozyme	Temperature	1.57 (0.39)	0.80	2.34	0.99
	Precipitation	-0.13 (0.37)	-0.85	0.58	0.33
	pH	-0.15 (0.35)	-0.83	0.53	0.27
	Precipitation:Temperature	0.80 (1.10)	-1.36	2.96	0.10
	A_M	-0.92 (0.51)	-1.92	0.08	0.00
Ovotransferrin	pH	-8.14 (1.79)	-11.66	-4.62	1.00
	Temperature	-2.69 (2.00)	-6.61	1.23	0.44
	Precipitation	-0.78 (2.00)	-4.70	3.15	0.26
	A_M	0.69 (1.84)	-2.90	4.29	0.12
	Precipitation:Temperature	-1.68 (5.62)	-12.70	9.34	0.04

Model average parameter estimates, standard errors (se), 95% confidence intervals and relative variable importance, demonstrating the effects of climatic variables and pH on antimicrobial protein activities. Relative variable importance is the sum of all AICc weights (w_i in Table 1) over all models containing the explanatory variable of interest. Effect sizes have been standardized on two SD following Gelman 2008[50].

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