Table 3.

GLM results for DA activity, measured as DOPAC/DA, in uninfected and experimentally infected killifish. (Brain region codes defined in § 2. Parasite effect indicates the effect of increasing metacercarial density on DA activity. Arrows indicate increased or decreased DA activity; EI, experimentally infected fish; K, body condition. An asterisk (*) denotes significance after correction for multiple comparisons using FDR. D.f.=1 for all main effects and interactions.)

dopamine activity
	SS	F	p-value	parasite effect	stress effect
striatum (Vc, Vd) overall model: SS=4.687, F6,37=4.3, p=0.003, R2=0.5
stress	1.389	7.7	0.009*		note interaction
sex	0.597	3.3	0.080
body mass	0.132	0.7	0.400
K	0.004	0.02	0.900
stress×K	2.004	11.1	0.002*		↑ with ↑ K
sex×body mass	0.821	4.6	0.041		↑ in males
hypothalamus (NPO, NPP) overall model: SS=0.646, F6,36=4.1, p=0.004, R2=0.5
stress	0.0004	0.02	0.900		note interaction
sex	0.092	3.4	0.070
body mass	0.058	2.2	0.150
K	0.014	0.5	0.470
stress×sex	0.220	8.4	0.007*		↑ in males
body mass×K	0.123	4.7	0.040
raphe (IR, SR) overall model: SS=0.046, F5,36=3.9, p=0.007, R2=0.4
metacercarial density	0.010	4.5	0.04*	↑ overall
stress	0.018	7.6	0.01*		note interaction
sex	0.000	0.0	0.93
body mass	0.018	7.5	0.01*
stress×sex	0.018	7.6	0.01*		↓ in females