Effects of capture and captivity on plasma corticosterone and metabolite levels in breeding Eurasian Tree Sparrows

Table 1 Results of a generalized linear mixed model (GLMM) of the effects of sampling time, sex, and interaction between time and sex (fixed factors), and sampling year, site, and individual (random factors) on the body mass (Mass), body condition index (BCI), plasma corticosterone (CORT), glucose (Glu), triglyceride (TG), total cholesterol (TC), uric acid (UA), levels of Eurasian Tree Sparrows (Passer montanus)

Variable	Factor	F	df	p	Variable	Factor	F	df	p	Variable	Factor	F	df	p
Mass	Intercept	2.834	3,32	0.054	BCI	Intercept	4.162	3,32	0.013	CORT	Intercept	2.817	7,81	0.011
	Time	6.688	1,32	0.014		Time	4.163	1,32	0.050		Time	6.052	3,81	0.001
	Sex	0.071	1,32	0.792		Sex	5.645	1,32	0.024		Sex	0.52	1,81	0.473
	Time × sex	0.132	1,32	0.719		Time × sex	0.019	1,32	0. 893		Time × sex	0.5	3,81	0.683
UA	Intercept	6.808	7,72	< 0.001	Glu	Intercept	5.552	7,72	< 0.001	TG	Intercept	2.855	7,72	0.011
	Time	15.172	3,72	< 0.001		Time	11.274	3,72	< 0.001		Time	1.852	3,72	0.146
	Sex	0.632	1,72	0.429		Sex	0.935	1,72	0.337		Sex	13.735	1,72	< 0.001
	Time × sex	0.09	3,72	0.965		Time × sex	0.941	3,72	0.426		Time × sex	0.138	3,72	0.937
TC	Intercept	4.600	7,71	< 0.001
	Time	7.506	3,71	< 0.001
	Sex	3.142	1,71	0.081
	Time × sex	1.105	3721	0.353

Body mass was measured 3 min after capture and after 24 h in captivity and other physiological variables were measured 3, 30 and 60 min after capture and after 24 h in captivity. Significant factors (p < 0.05) are shown in italics

ISSN: 2053-7166