ArticlePrimates; journal of primatology2015
Variation of hair cortisol concentrations among wild populations of two baboon species (Papio anubis, P. hamadryas) and a population of their natural hybrids.
Article in Primates; journal of primatology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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Who cites it
16 citing papers in PubMed, 31 citations in OpenAlex.
- Effects of Classical Music on Behavioral and Physiological Stress Markers in Socially Isolated Prairie Voles.Annals of the New York Academy of Sciences · 2026Article
- Factors Affecting Hair Cortisol Concentration in Domestic Dogs: A Focus on Factors Related to Dogs and Their Guardians.Animals : an open access journal from MDPI · 2025Article
- A Macaque Model for the Effects of Hybridization on Body Size.American journal of biological anthropology · 2025Article
- The Levels of Cortisol and Selected Biochemical Parameters in Red Deer Harvested during Stalking Hunts.Animals : an open access journal from MDPI · 2024Article
- Methodology Advances in Vertebrate Age Estimation.Animals : an open access journal from MDPI · 2024Review
- Hair Cortisol Concentrations in Feral Horses and the Influence of Physiological and Social Factors.Animals : an open access journal from MDPI · 2023Article
- Hair cortisol in captive corral-housed baboons.General and comparative endocrinology · 2021Article
- Human-like adrenal development in wild chimpanzees: A longitudinal study of urinary dehydroepiandrosterone-sulfate and cortisol.American journal of primatology · 2020Article
- Wild chimpanzees exhibit humanlike aging of glucocorticoid regulation.Proceedings of the National Academy of Sciences of the United States of America · 2020Article
- Article
- Hair cortisol and stable carbon and nitrogen isotope ratios in barbary macaques (Macaca sylvanus) from Gibraltar.Rapid communications in mass spectrometry : RCM · 2019Article
- Responses to the Human Intruder Test are related to hair cortisol phenotype and sex in rhesus macaques (Macaca mulatta).American journal of primatology · 2017Article
- Relationships between steroid hormones in hair and social behaviour in ring-tailed lemurs (Lemur catta).Primates; journal of primatology · 2017Article
- Article
- Analysis of hair cortisol levels in captive chimpanzees: Effect of various methods on cortisol stability and variability.MethodsX · 2016Article
- Variation in vervet (Chlorocebus aethiops) hair cortisol concentrations reflects ecological disturbance by humans.Primates; journal of primatology · 2015Article
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Authors and funding
5 authors at 5 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Male olive (Papio anubis) and hamadryas (P. hamadryas) baboons have distinctive sociobehavioral and physical characteristics. In the Awash National Park, Ethiopia, a hybrid population at the contact zone between these two species, exhibits heterogeneous sociobehavioral and physical characteristics. The ambiguity of the hybrid social environment and disruption of parental stress genotypes may be sources of physiological stress for hybrids. We examined levels of chronic stress among males of the three populations and tested the prediction that chronic cortisol levels would be higher among the hybrids. Animals were captured, sampled, and released during the wet season, and a hair sample was taken for assay. Cortisol was extracted from 182 hair samples with methanol and quantified by ELISA. We included age, age class, rainfall variation, and species affiliation in models examining variation in hair cortisol levels. Species and age significantly contributed to models explaining variation in hair cortisol. Infant hypercortisolism was observed in all three groups, and a decline in cortisol through juvenile and adolescent stages, with a subsequent rise in adulthood. This rise occurred earliest in hamadryas, corroborating other evidence of the precocious development of hamadryas baboons. As expected, hybrids had significantly elevated hair cortisol compared with olive baboons and hamadryas, irrespective of age, except for very young animals. Infant hypercortisolism was also less pronounced among hybrids. Species differences and age-related differences in cortisol levels suggest a dysregulated cortisol phenotype in hybrids, and possibly reflect some form of hybrid disadvantage. More work will be required to disentangle the effects of genetic factors and the social environment.
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