Hair cortisol levels track phylogenetic and age related differences in hypothalamic-pituitary-adrenal (HPA) axis activity in non-human primates.

摘要: Hair has been shown to archive a uniquely time averaged signal of endocrine activity, and holds attractive advantages for both laboratory field research. Prior research explored the potential hair hormone analysis examine hormone–behavior relationships. To date, no focused on technique investigate age-related changes or taxon differences in function. It is known that non-human primate infants many taxa exhibit high cortisol levels after parturition, which rapidly decline with age. also hypercortisolism generally characterizes platyrrhine (New World monkey) These trends have characterized using determined from serum, plasma, feces. Here we test whether recover similar phylogenetic age related patterns function primates. In order reflect infant significant decline, are measured samples wild vervet monkeys (Chlorocebus aethiops) captive Guinea baboons (Papio hamadryas papio), ranging through juveniles. Further, platyrrhines significantly higher compared strepsirrhines catarrhines, therefore faithfully signals as more traditionally used substrates (e.g. serum), quantified adult female collected broad range taxa. Results confirm accurately circulating levels. Therefore, these results suggest may be an ideal bearing substrate examination population profiles, cross-sectional studies variation levels, well stable behavioral trends.