The ecology of ageing in wild societies: linking age structure and social behaviour

Philosophical Transactions of the Royal Society B Biological Sciences, Journal Year: 2024, Volume and Issue: 379(1916)

Published: Oct. 28, 2024

The age of individuals has consequences not only for their fitness and behaviour but also the functioning groups they form. Because social often changes with age, population structure is expected to shape organization, environments experience operation processes within populations. Although research explored in individual particularly controlled settings, there limited understanding how governs sociality wild Here, we synthesize previous into age-related effects on natural populations, discuss links between structure, ecology, specifically focusing might influence functioning. We highlight potential using empirical data from populations combination network approaches uncover pathways linking ageing, societal broader implications these insights impacts anthropogenic animal demography building a deeper ageing general. This article part discussion meeting issue ‘Understanding society populations’.

Language: Английский

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Age-dependent shaping of the social environment in a long-lived seabird: a quantitative genetic approach

Philosophical Transactions of the Royal Society B Biological Sciences, Journal Year: 2024, Volume and Issue: 379(1916)

Published: Oct. 28, 2024

Individual differences in social behaviour can result fine-scale variation spatial distribution and, hence, the environment experienced. Given expected fitness consequences associated with environments, it is imperative to understand factors that shape them. One potential such factor age. Age-specific behaviour—often referred as ‘social ageing’—has only recently attracted attention, requiring more empirical work across taxa. Here, we use 29 years of longitudinal data collected a pedigreed population long-lived, colonially breeding common terns ( Sterna hirundo ) investigate sources in, and quantitative genetic underpinnings of, an aspect ageing: shaping experienced, using number neighbours during proxy. Our analyses reveal age-specific declines breeding, well selective disappearance individuals high neighbours. Moreover, find this trait, individual slope its decline, be heritable. These results suggest ageing might underpin part overall multicausal phenotype, undergo microevolution, highlighting role facilitator for, or constraint evolutionary natural populations. This article discussion meeting issue ‘Understanding age society populations’.

Language: Английский

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Ageing effects of social environments in ‘non-social’ insects

Philosophical Transactions of the Royal Society B Biological Sciences, Journal Year: 2024, Volume and Issue: 379(1916)

Published: Oct. 28, 2024

It is increasingly clear that social environments have profound impacts on the life histories of ‘non-social’ animals. However, it not yet well known how species with varying degrees sociality respond to different contexts and whether such effects are sex-specific. To survey extent which specifically affect lifespan ageing in non-social species, we performed a systematic literature review, focusing invertebrates but excluding eusocial insects. We found 80 studies or parameters were measured relation changes same-sex opposite-sex exposure, group size cues thereof. Most focused manipulations adults, often reporting sex differences following exposure opposite sex. Some highlighted developmental partner age lifespan. Several explored potential underlying mechanisms, emphasizing insects could provide excellent opportunities interrogate basis ageing. discuss what these can tell us about environment as stressor, trade-offs resources prompted by contexts. suggest fruitful avenues for further research across wider more diverse range taxa. This article part discussion meeting issue ‘Understanding society using natural populations’.

Language: Английский

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Early life adversity has sex-dependent effects on survival across the lifespan in rhesus macaques

Philosophical Transactions of the Royal Society B Biological Sciences, Journal Year: 2024, Volume and Issue: 379(1916)

Published: Oct. 28, 2024

Exposure to early life adversity is linked detrimental fitness outcomes across taxa. Owing the challenges of collecting longitudinal data, direct evidence for long-term effects from long-lived species remains relatively scarce. Here, we test on male and female longevity in a free-ranging population rhesus macaques ( Macaca mulatta ) Cayo Santiago, Puerto Rico. We leveraged six decades data quantify relative importance 10 forms 6599 macaques. Individuals that experienced more died earlier than those less adversity. Mortality risk was highest during life, defined as birth 4 years old, but heightened mortality also present survived adulthood. Females males were affected differently by some adversity, these differences might be driven varying energetic demands dispersal patterns. Our results show consequences are not uniform individuals vary function type timing social context, thus contribute our limited growing understanding evolution sensitivities. This article part discussion meeting issue ‘Understanding age society using natural populations’

Language: Английский

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Understanding age and society using natural populations

Philosophical Transactions of the Royal Society B Biological Sciences, Journal Year: 2024, Volume and Issue: 379(1916)

Published: Oct. 28, 2024

Ageing affects almost all aspects of life and therefore is an important process across societies, human non-human animal alike. This article introduces new research exploring the complex interplay between individual-level ageing demography, consequences this holds for structure functioning societies various natural populations. We discuss how Special Issue provides a foundation integrating perspectives from evolutionary biology, behavioural ecology demography to provide insights into shapes individuals’ social behaviour associations, in turn impacts networks, processes (such as disease or information transfer) fitness. Through examining these topics taxa, invertebrates birds mammals, we outline contemporary studies are using populations advance our understanding relationship age society innovative ways. highlight key emerging themes Issue, such sociality lifespan health, genetic ecological underpinnings adaptive strategies employed by different species. conclude that underscores importance studying diverse systems interdisciplinary approaches advancing both more generally. part discussion meeting issue ‘Understanding ’.

Language: Английский

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The life history of harvester ant colonies

Philosophical Transactions of the Royal Society B Biological Sciences, Journal Year: 2024, Volume and Issue: 379(1916)

Published: Oct. 28, 2024

A long-term study of a population desert seed-eating ant colonies the red harvester ant,

Language: Английский

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