Figure 2
Testes development in guinea pigs maintained on a control, high-PUFA, or high-SFA diet. (a) Effects of age and saliva cortisol concentrations (insert graph, saliva cortisol: 0–140 ng/ml, testes width: 24–34 mm) on testes width in males (number of observations: 247). Filled areas represent the 95% confidence interval. Sample sizes: control: 14; PUFA: 14; SFA: 13. Mean number of repeated measurements: 6.02. Statistics and effect sizes are outlined in Table 1. (b) Plasma testosterone concentrations (means + s.e.m.) of males and females (number of observations: 193). Sample sizes: control: 14♂, 10♀; PUFA: 14♂, 9♀; SFA: 13♂, 9♀. Mean number of repeated measurements: 2.8. **p ≤ 0.01, ***p ≤ 0.001 (comparing males in females in general).
