Social capital: an independent dimension of healthy ageing

Sueur, Cédric; Quque, Martin; Naud, Alexandre; Criscuolo, François

doi:10.24072/pcjournal.33

Cited by 9 publications

(11 citation statements)

References 171 publications

(173 reference statements)

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“…We had to remove dominance rank from three of our models, because this factor is highly determined by age in European bison [ 38 ] but also in other bovines [ 30 , 31 , 67 ]. However, as shown in many studies, dominance rank is linked to glucocorticoid concentrations in one way [ 5 , 6 , 7 ], or the other [ 8 , 9 ].…”

Section: Discussionmentioning

confidence: 99%

“…In our different models (except Model 2, see below), age and dominance rank always showed a VIF > 4, meaning that they were highly correlated (adj r 2 = 0.79, F = 388, p < 0.0001, Figure 1 a). Therefore, we decided to remove dominance rank as variable in the models 1, 3 and 4 as it is dependent on age, which is also shown in previous studies [ 30 , 31 , 38 , 67 ] but we tested it in a separate model. Subsequently, multifactorial linear models (LM) were applied as follows: FGM—Age × Leadership + Age × Eigenvector + Leadership × Eigenvector (Model 1) Rank—Age × FGM (Model 2) Eigenvector—Age × FGM (Model 3) Leadership—Age × FGM + Eigenvector × FGM (Model 4) Dominance—Age × FGM (Model 5) …”

Section: Methodsmentioning

confidence: 99%

“…Glucocorticoid concentrations are also linked to social capital but this correlation—positive or negative—depends on the stability of the hierarchy and other parameters as the reproduction state [ 27 , 28 , 29 , 30 ]. Mainly, high-ranking individuals have lower concentrations of glucocorticoids when the hierarchy is stable but higher concentrations when it is unstable.…”

Section: Introductionmentioning

confidence: 99%

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Glucocorticoids of European Bison in Relation to Their Status: Age, Dominance, Social Centrality and Leadership

Ramos

Robin

Manizan

et al. 2022

Animals

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Stress is the body’s response to cope with the environment and generally better survive unless too much chronic stress persists. While some studies suggest that it would be more stressful to be the dominant individual of the group, others support the opposite hypothesis. Several variables can actually affect this relationship, or even cancel it. This study therefore aims to make the link between social status and the basal level of stress of 14 wild European bison (Bison bonasus, L. 1758) living together. We collected faeces and measured the faecal glucocorticoid metabolites (FGM). We showed that FGM is linked to different variables of social status of European bison, specifically age, dominance rank, eigenvector centrality but also to interactions between the variables. Preferential leaders in bison, i.e., the older and more dominant individuals which are more central ones, are less stressed compared to other group members. Measurement of such variables could thus be a valuable tool to follow and improve the conservation of species by collecting data on FGM and other social variables and adapt group composition or environmental conditions (e.g., supplement in food) according to the FGM concentration of herd individuals.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Glucocorticoids of European Bison in Relation to Their Status: Age, Dominance, Social Centrality and Leadership

Ramos

Robin

Manizan

et al. 2022

Animals

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“…The place that an individual holds in the social network of the group has emerged as a strong explanatory factor of aging in various taxa 1 : birds 2 , 3 , insects 4 – 6 , and mammals 7 including humans 7 – 9 . To better understand such a well conserved evolutionary relationship between sociality and aging, the use of additional key species that evolved remarkable social organizations will make it possible to test specific hypotheses experimentally and conduct studies faster than in humans.…”

Section: Introductionmentioning

confidence: 99%

Both age and social environment shape the phenotype of ant workers

Quque

Brun

Villette

et al. 2023

Sci Rep

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Position within the social group has consequences on individual lifespans in diverse taxa. This is especially obvious in eusocial insects, where workers differ in both the tasks they perform and their aging rates. However, in eusocial wasps, bees and ants, the performed task usually depends strongly on age. As such, untangling the effects of social role and age on worker physiology is a key step towards understanding the coevolution of sociality and aging. We performed an experimental protocol that allowed a separate analysis of these two factors using four groups of black garden ant (Lasius niger) workers: young foragers, old foragers, young nest workers, and old nest workers. We highlighted age-related differences in the proteome and metabolome of workers that were primarily related to worker subcaste and only secondarily to age. The relative abundance of proteins and metabolites suggests an improved xenobiotic detoxification, and a fuel metabolism based more on lipid use than carbohydrate use in young ants, regardless of their social role. Regardless of age, proteins related to the digestive function were more abundant in nest workers than in foragers. Old foragers were mostly characterized by weak abundances of molecules with an antibiotic activity or involved in chemical communication. Finally, our results suggest that even in tiny insects, extended lifespan may require to mitigate cancer risks. This is consistent with results found in eusocial rodents and thus opens up the discussion of shared mechanisms among distant taxa and the influence of sociality on life history traits such as longevity.

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“…The place that an individual holds in the social network of the group has emerged as a strong explanatory factor of aging in various taxa (reviewed in 1): birds (2, 3), insects (4–6), and mammals (7) including humans (7–9). To better understand such a well conserved evolutionary relationship between sociality and aging, the use of additional key species that evolved remarkable social organizations will make it possible to test specific hypotheses experimentally and conduct studies faster than in humans.…”

Section: Introductionmentioning

confidence: 99%

Both social environment and chronological age shape the physiology of ant workers

Quque¹,

Brun²,

Villette

et al. 2022

Preprint

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Position within the social group has consequences on individual lifespans in diverse taxa. This is especially obvious in eusocial insects, where workers differ in both the tasks they perform and their aging rates. However, in eusocial wasps, bees and ants, the performed task usually depends strongly on age. As such, untangling the effects of social role and age on worker physiology is a key step towards understanding the coevolution of sociality and aging. We performed an experimental protocol that allowed a separate analysis of these two factors using four groups of black garden ant (Lasius niger) workers: young foragers, old foragers, young nest workers, and old nest workers. We highlighted age-related differences in the proteome and metabolome of workers that were primarily related to worker subcaste and only secondarily to age. The relative abundance of proteins and metabolites suggests an improved xenobiotic detoxification, and a fuel metabolism based more on lipid use than carbohydrate use in young ants, regardless of their social role. Regardless of age, proteins related to the digestive function were more abundant in nest workers than in foragers. Old foragers were mostly characterized by weak abundances of molecules with an antibiotic activity or involved in chemical communication. Finally, our results suggest that even in tiny species, extended lifespan may require to mitigate cancer risks. This is consistent with results found in eusocial rodents and thus opens up the discussion of shared mechanisms among distant taxa and the influence of sociality on life history traits such as longevity.

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Social capital: an independent dimension of healthy ageing

Cited by 9 publications

References 171 publications

Glucocorticoids of European Bison in Relation to Their Status: Age, Dominance, Social Centrality and Leadership

Glucocorticoids of European Bison in Relation to Their Status: Age, Dominance, Social Centrality and Leadership

Both age and social environment shape the phenotype of ant workers

Both social environment and chronological age shape the physiology of ant workers

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