More allogrooming is followed by higher physiological stress in wild female baboons DOI
Charlotte Christensen

Опубликована: Авг. 30, 2024

Social bonds increase fitness in a range of mammals. One potential pathway by which social is reducing the exposure to physiological stress, i.e., glucocorticoid (GC) hormones, that can be detrimental health and survival. This achieved through downregulating hypothalamic-pituitary-adrenal (HPA)-axis activity. While long-term measures (grooming) are often negatively correlated with HPA-axis activity, proximate role physical touch allogrooming remains an open question sociality-health-fitness debate. Demonstrating anxiolytic benefits grooming wild hindered methodological limitations. Here, we match accelerometer-identified female chacma baboons (Papio ursinus) non-invasive faecal GC concentrations (fGCs). Consistent previous work, found negative overall correlation between individual averaged fGCs rates. However, when time-matching fGCs, both more giving receiving was followed higher fGCs. upregulation activity suggests maintaining its associated benefits, may come at shorter-term cost. finding sheds new light on ubiquitous behaviour typically considered ‘relaxing’ sociopositive contact trigger stress.

Язык: Английский

Linking energy availability, movement and sociality in a wild primate ( Papio ursinus ) DOI Creative Commons
Ines Fürtbauer,

C. Shergold,

Charlotte Christensen

и другие.

Philosophical Transactions of the Royal Society B Biological Sciences, Год журнала: 2024, Номер 379(1916)

Опубликована: Окт. 28, 2024

Proximate mechanisms of ‘social ageing’, i.e. shifts in social activity and narrowing networks, are understudied. It is proposed that energetic deficiencies (which often seen older individuals) may restrict movement and, turn, sociality, but empirical tests these intermediary lacking. Here, we study wild chacma baboons ( Papio ursinus ), combining measures faecal triiodothyronine (fT3), a non-invasive proxy for energy availability, high-resolution GPS data (movement proximity) accelerometry (social grooming durations). Higher (individual mean-centred) fT3 was associated with increased residency time (i.e. remaining the same area longer), which, positively related to opportunities close physical proximity). Individuals more frequent received grooming, whereas given, moderated this effect, suggesting an cost giving grooming. While our results support spirit hypothesis, directionality relationship between availability unexpected suggests lower-energy individuals use strategies reduce costs intermittent locomotion. Thus, future work should consider whether age-related declines sociality be by-product strategy conserve energy. This article part discussion meeting issue ‘Understanding age society using natural populations’.

Язык: Английский

Процитировано

7
More allogrooming is followed by higher physiological stress in wild female baboons DOI Creative Commons
Charlotte Christensen, Anna M. Bracken, M. Justin O’Riain

и другие.

Biology Letters, Год журнала: 2024, Номер 20(8)

Опубликована: Авг. 1, 2024

Social bonds increase fitness in a range of mammals. One pathway by which social may is reducing the exposure to physiological stress, i.e. glucocorticoid (GC) hormones, that can be detrimental health and survival. This achieved through downregulating hypothalamic–pituitary–adrenal (HPA)-axis activity. Indeed, long-term measures (grooming) are often negatively correlated with HPA-axis However, proximate role physical touch allogrooming remains an open question sociality–health–fitness debate. Demonstrating potential anxiolytic benefits grooming wild hindered methodological limitations. Here, we match accelerometer-identified female chacma baboons ( Papio ursinus ) non-invasive faecal GC metabolite concentrations (fGCs). Consistent previous work, found negative (but statistically non-significant) overall relationship between individual averaged fGCs rates. when time-matching fGCs, both more giving receiving were followed higher fGCs. upregulation activity suggests maintaining (and its ultimate benefits) come at shorter-term cost. finding sheds new light on ubiquitous behaviour typically considered ‘relaxing’ sociopositive contact trigger stress.

Язык: Английский

Процитировано

5
Differential effects of multiplex and uniplex affiliative relationships on biomarkers of inflammation DOI Creative Commons
Jessica J. Vandeleest, Lauren J. Wooddell,

Amy Nathman

и другие.

PeerJ, Год журнала: 2025, Номер 13, С. e19113 - e19113

Опубликована: Март 24, 2025

Social relationships profoundly impact health in social species. Much of what we know regarding the affiliative on nonhuman primates (NHPs) has focused structure connections or quality relationships. These are often quantified by comparing different types behaviors ( e.g. , contact sitting, grooming, proximity) pooling into an overall measure affiliation. However, it is unclear how breadth many which ones) a dyad engages and fitness outcomes. We used novel network approach to quantify based two behaviors: grooming sitting contact. Dyadic were filtered separate networks depending whether pair engaged multiple (multiplex networks) just one (uniplex networks). Typically, analysis, edges represent presence single behavior grooming) regardless absence other proximity). Therefore, validate this method, first compared standard for each behavior: all interactions grooming. then similarly our multiplex vs. uniplex networks. Results indicated that more modular, reciprocal, kin-based while strongly associated with status. differences not replicated when alone i.e. Next, evaluated individual position vs . (novel approach) (traditional differentially inflammatory biomarkers commonly studied non-human primate model system, rhesus macaque Macaca mulatta ). Being well connected (networks where individuals both sat groomed) was lower inflammation (IL-6, TNF-alpha). In contrast, being (dyad only sitting) greater inflammation. Altogether, these results suggest may function as supportive those between kin strong bonds) promote health. be transactional tolerance status) incur physiological costs. This complexity important consider understanding mechanisms underlying association human animal

Язык: Английский

Процитировано

0
Group traits moderate the relationship between individual social traits and fitness in gorillas DOI Creative Commons
Robin E. Morrison, Samuel Ellis,

Victoire Martignac

и другие.

Proceedings of the National Academy of Sciences, Год журнала: 2025, Номер 122(20)

Опубликована: Май 5, 2025

Evidence across a broad range of disciplines has demonstrated how individuals’ social environments can impact their health, lifespan, reproduction, and ultimately evolutionary fitness. Past research primarily focused on either traits specific to individuals or wider groups, linking these with component In this study, we examined both individual- group-level in 164 wild mountain gorillas combine influence multiple pathways impacting fitness over 21 y. First, highlight key sex differences the costs benefits bonds, strong stable bonds linked lower risk illness females, but higher males. Second, demonstrate important trade-offs consequences sociality, males decreases injury increases illness. Finally, show extensive moderating effects individual-level traits. For example, small females benefitted from rates illness, also showed birth rates, while large experienced rates. These findings complexity selection acting traits, where individual’s phenotypes are highly context dependent. We argue that variability sociality likely played fundamental role maintaining wide diversity observed within species.

Язык: Английский

Процитировано

0
More allogrooming is followed by higher physiological stress in wild female baboons DOI
Charlotte Christensen

Опубликована: Авг. 30, 2024

Social bonds increase fitness in a range of mammals. One potential pathway by which social is reducing the exposure to physiological stress, i.e., glucocorticoid (GC) hormones, that can be detrimental health and survival. This achieved through downregulating hypothalamic-pituitary-adrenal (HPA)-axis activity. While long-term measures (grooming) are often negatively correlated with HPA-axis activity, proximate role physical touch allogrooming remains an open question sociality-health-fitness debate. Demonstrating anxiolytic benefits grooming wild hindered methodological limitations. Here, we match accelerometer-identified female chacma baboons (Papio ursinus) non-invasive faecal GC concentrations (fGCs). Consistent previous work, found negative overall correlation between individual averaged fGCs rates. However, when time-matching fGCs, both more giving receiving was followed higher fGCs. upregulation activity suggests maintaining its associated benefits, may come at shorter-term cost. finding sheds new light on ubiquitous behaviour typically considered ‘relaxing’ sociopositive contact trigger stress.

Язык: Английский

Процитировано

0