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

JP Woodman, S Gokcekus, KB Beck… - Philosophical …, 2024 - royalsocietypublishing.org
The age of individuals has consequences not only for their fitness and behaviour but also for
the functioning of the groups they form. Because social behaviour often changes with age …

Demographic and hormonal evidence for menopause in wild chimpanzees

BM Wood, JD Negrey, JL Brown, T Deschner… - Science, 2023 - science.org
Among mammals, post-reproductive life spans are currently documented only in humans
and a few species of toothed whales. Here we show that a post-reproductive life span exists …

The evolution of menopause in toothed whales

S Ellis, DW Franks, MLK Nielsen, MN Weiss, DP Croft - Nature, 2024 - nature.com
Understanding how and why menopause has evolved is a long-standing challenge across
disciplines. Females can typically maximize their reproductive success by reproducing for …

Kinship composition in mammals

AS Pereira, D De Moor… - Royal Society Open …, 2023 - royalsocietypublishing.org
Understanding the evolution of group-living and cooperation requires information on who
animals live and cooperate with. Animals can live with kin, non-kin or both, and kinship …

Temporal dynamics of mother–offspring relationships in Bigg's killer whales: opportunities for kin-directed help by post-reproductive females

MLK Nielsen, S Ellis, MN Weiss… - … of the Royal …, 2023 - royalsocietypublishing.org
Age-related changes in the patterns of local relatedness (kinship dynamics) can be a
significant selective force shaping the evolution of life history and social behaviour. In …

Societies with fission–fusion dynamics as complex adaptive systems: the importance of scale

A Madsen, S de Silva - Philosophical Transactions B, 2024 - royalsocietypublishing.org
In this article, we argue that social systems with fission–fusion (FF) dynamics are best
characterized within a complex adaptive systems (CAS) framework. We discuss how …

Postreproductive female killer whales reduce socially inflicted injuries in their male offspring

C Grimes, LJN Brent, S Ellis, MN Weiss, DW Franks… - Current Biology, 2023 - cell.com
Understanding the evolution of menopause presents a long-standing scientific challenge 1,
2, 3—why should females cease ovulation prior to the end of their natural lifespan? In …

Social network shrinking is explained by active and passive effects but not increasing selectivity with age in wild macaques

B Sadoughi, R Mundry… - Proceedings of the …, 2024 - royalsocietypublishing.org
Evidence of social disengagement, network narrowing and social selectivity with advancing
age in several non-human animals challenges our understanding of the causes of social …

Explaining variation in the kinship composition of mammal groups

M Dyble - Behavioral Ecology, 2024 - academic.oup.com
Variation in cooperative behavior across mammals is strongly related to the kinship
composition of groups. Although the factors affecting average genetic relatedness within …

Turnover in male dominance offsets the positive effect of polygyny on within-group relatedness

M Dyble, TH Clutton-Brock - Behavioral Ecology, 2023 - academic.oup.com
Evidence of an association between cooperative breeding systems and average coefficients
of relatedness between group members in vertebrates have led to increased interest in the …