Figure 3
From: Stability and change: Stress responses and the shaping of behavioral phenotypes over the life span
Cortisol responses during different life stages (a-d). Each dot represents plasma cortisol levels of a colony-housed male 2 h following placement into an unfamiliar enclosure at: a) 20 and 30 days, b) 30 and 55 days, c) 55 and 120 days, and d) about 7 to 17 months and 8 weeks later. Statistics: Spearman's rank correlation (one-tailed; parameters are indicated in the graphs). Redrawn and recalculated from [76, 87–89], and unpublished data.