Complex adaptive responses during antagonistic coevolution between Tribolium castaneum and its natural parasite Nosema whitei revealed by multiple fitness components

Table 3 Results of a generalized linear model of spore load in a randomly collected subsample of eight beetles per experimental block.

Factor	Df		Deviance		Resid. Df	Resid. Dev		P(> \|Chi\|)
Null deviance					379	10657902
Individual mortality (Dead/Alive)	1		8698191		378	1959711		< 0.001
factor(Line)	4		113410.1		374	1846301		< 0.001
Parasite	4		199320.9		370	1646980		< 0.001
Selection	1		77375.2		369	1569605		< 0.001
Line:Parasite	16		191614.9		353	1377990		< 0.001
Line:Selection	4		22822.19		349	1355168		0.303
Parasite:Selection	4		139426.9		345	1215741		< 0.001
Line:Parasite:Selection	16		146398.9		329	1069342		0.013
Results of post hoc contrast analysis of spore load
	Within host (coevolved lines)		Within parasite (coevolved lines)		Within host (control lines)		Within parasite (control lines)
Line/Isolate	Z value	P	Z value	P	Z value	P	Z value	P
1	-0.29	0.939	-0.07	1.000	0.48	0.983	0.60	0.982
3	0.47	0.822	0.38	0.998	-0.55	0.973	2.09	0.169
4	0.11	0.998	0.52	0.990	3.02	0.012	-1.21	0.726
5	0.03	1.000	0.04	1.000	1.28	0.618	-0.29	0.999
6	0.56	0.753	0.52	0.990	-0.61	0.961	0.06	1.000

Levels of significance of GLM model fits were tested using analysis of deviance with chi-square distribution. Post hoc test results for contrasts between sympatric and allopatric combinations are shown below. Positive Z values indicate combinations where were local antagonists show higher spore load than foreign antagonists.

ISSN: 2730-7182