Understanding the links between social ties and fitness over the life cycle in primates

Thompson, Nicole A.

doi:10.1163/1568539x-00003552

Cited by 54 publications

(60 citation statements)

References 264 publications

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“…Although the existence of bonds has long been acknowledged (e.g., Kummer, 1978 ; Wrangham, 1980 ), only the last 15 years evidence emerged that bonds provide fitness benefits ( Nishida and Hosaka, 1996 ; Palombit et al, 1997 ; Silk et al, 2006a , b ; Kulik et al, 2012 ; Massen et al, 2012 ). The proximate mechanisms responsible for these benefits are often not addressed ( Thompson, 2019 ). For females these mechanisms may concern the proximity patterns and ensuing safety, for males enhanced interest from mating partners.…”

Section: Three Classes Of Social Behaviour and Resource Access: Empirmentioning

confidence: 99%

How to Get the Biggest Slice of the Cake. A Comparative View of Social Behaviour and Resource Access in Human Children and Nonhuman Primates

Vermande

Sterck

2020

Front. Psychol.

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Social complexity results from engaging in different classes of social behaviour. The presence of different classes of social behaviour is reflected in multidimensional concepts of social asymmetry, found in both human and nonhuman primates. Based on an overview of such concepts, we propose that three classes of social behaviour are involved in having access to scarce and desired resources: next to aggressive and affiliative behaviour, also action indicating behaviour (i.e., inspire another individual to follow one’s example or intentions) may lead to resource access. Studies with nonhuman primate and human children show that the contribution of aggression and affiliation to resource access has been widely documented and that there is initial support for action indicating behaviour. In addition, the studies show similarities and differences in conceptualization and approach that may inspire future research. Future research should address the (in)dependency of the behavioural dimensions, their relative importance, individual differences in combined expression and the type of resources accessed. Only a multi-dimensional view on behaviour leading to resource access will highlight the benefits of social complexity.

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Section: Three Classes Of Social Behaviour and Resource Access: Empirmentioning

confidence: 99%

How to Get the Biggest Slice of the Cake. A Comparative View of Social Behaviour and Resource Access in Human Children and Nonhuman Primates

Vermande

Sterck

2020

Front. Psychol.

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“…In the primate literature, recently there has been discussion of the specific pathways that connect social behavior to fitness (Ostner and Schülke 2018;Thompson, 2019). Consistent with the stress buffering model, providing grooming can have either direct effects on longevity or influence other behaviors that in turn influence survival.…”

Section: Discusssionmentioning

confidence: 99%

Social integration predicts survival in female white-faced capuchin monkeys

Kajokaite

Whalen

Koster

et al. 2020

Preprint

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Across multiple species of social mammals, evidence is accumulating that sociality is associated with fitness. In long-lived species, like primates, lifespan is one of the main fitness components. Here, we provide the first direct evidence that females who provide more in social services live longer. We used 18 years of data from the Lomas Barbudal Monkey project to quantify sociality in 11 capuchin (Cebus capucinus) social groups using three interaction types: grooming, support in coalitionary aggression, and foraging in close proximity. We analyzed each domain separately to understand how giving and receiving social favors impact survivorship. To estimate female sociality in each of these domains, we built an adaptation of the Social Relations Model. This approach enabled us to estimate individual rates of giving and receiving interactions and take into account the uncertainty in these estimates due to varying amounts of observations of each individual. Subsequently, we modeled adult females’ survival as a function of their sociality estimate, rank, age, group size, and maternal kin presence using a Bayesian Cox proportional hazards model. We found that females who provide more grooming to other group members survive longer. There was no strong evidence that females who receive more grooming, participate more often in coalitionary aggression, and forage more often in close proximity of others also have higher survivorship. These results add a neotropical primate species to the growing list of mammals, including humans, where greater sociality is associated with longevity.

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“…While group living may facilitate finding sexual partners and promote cooperation in acquiring food, in offspring care and in protection against predators, it imposes conflicts in the form of competition for sexual partners and for resources [1]. Nonetheless, in several species of group-living mammals, maintenance of affiliative social ties is positively correlated with fitness outcomes in ways that are not yet fully understood [2]. Also, in humans, social interactions impact health outcomes [3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Wild mice with different social network sizes vary in brain gene expression

Lopes

König

2020

BMC Genomics

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Background: Appropriate social interactions influence animal fitness by impacting several processes, such as mating, territory defense, and offspring care. Many studies shedding light on the neurobiological underpinnings of social behavior have focused on nonapeptides (vasopressin, oxytocin, and homologues) and on sexual or parentoffspring interactions. Furthermore, animals have been studied under artificial laboratory conditions, where the consequences of behavioral responses may not be as critical as when expressed under natural environments, therefore obscuring certain physiological responses. We used automated recording of social interactions of wild house mice outside of the breeding season to detect individuals at both tails of a distribution of egocentric network sizes (characterized by number of different partners encountered per day). We then used RNA-seq to perform an unbiased assessment of neural differences in gene expression in the prefrontal cortex, the hippocampus and the hypothalamus between these mice with naturally occurring extreme differences in social network size. Results: We found that the neurogenomic pathways associated with having extreme social network sizes differed between the sexes. In females, hundreds of genes were differentially expressed between animals with small and large social network sizes, whereas in males very few were. In males, X-chromosome inactivation pathways in the prefrontal cortex were the ones that better differentiated animals with small from those with large social network sizes animals. In females, animals with small network size showed up-regulation of dopaminergic production and transport pathways in the hypothalamus. Additionally, in females, extracellular matrix deposition on hippocampal neurons was higher in individuals with small relative to large social network size. Conclusions: Studying neural substrates of natural variation in social behavior in traditional model organisms in their habitat can open new targets of research for understanding variation in social behavior in other taxa.

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Understanding the links between social ties and fitness over the life cycle in primates

Cited by 54 publications

References 264 publications

How to Get the Biggest Slice of the Cake. A Comparative View of Social Behaviour and Resource Access in Human Children and Nonhuman Primates

How to Get the Biggest Slice of the Cake. A Comparative View of Social Behaviour and Resource Access in Human Children and Nonhuman Primates

Social integration predicts survival in female white-faced capuchin monkeys

Wild mice with different social network sizes vary in brain gene expression

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