Sex‐biased dispersal of human ancestors

  title={Sex‐biased dispersal of human ancestors},
  author={Yukimaru Sugiyama},
  journal={Evolutionary Anthropology: Issues},
  pages={172 - 180}
  • Y. Sugiyama
  • Published 1 July 2017
  • Biology
  • Evolutionary Anthropology: Issues
Some anthropologists and primatologists have argued that, judging by extant chimpanzees and humans, which are female‐biased dispersers, the common ancestors of humans and chimpanzees were also female‐biased dispersers. It has been thought that sex‐biased dispersal patterns have been genetically transmitted for millions of years. However, this character has changed many times with changes in environment and life‐form during human evolution and historical times. I examined life‐form and social… 

The demography of human warfare can drive sex differences in altruism

Abstract Recent years have seen great interest in the suggestion that between-group aggression and within-group altruism have coevolved. However, these efforts have neglected the possibility that

Patterns and consequences of age-linked change in local relatedness in animal societies

The ultimate payoff of behaviours depends not only on their direct impact on an individual, but also on the impact on their relatives. Local relatedness—the average relatedness of an individual to

Life-History Evolution: Grandmothering in Space and Time



Hominoid dispersal patterns and human evolution

It is speculated that gorillas might currently be the best model for reconstructing dispersal in robust australopiths, and human‐like patrilocality and Pan‐like male philopatry appear to be poor models for the reconstruction of dispersal patterns in Plio‐Pleistocene hominins.

The Demography and Reproductive Parameters of Bossou Chimpanzees

Although the habitat of the Bossou chimpanzees may be limited in its carrying capacity, it has nevertheless favored reproductive development in the females, and patterns of emigration and immigration are discussed here.

Sociobiology of the great apes and the hominid ancestor

Complexities of Understanding Female Dispersal in Primates

It is argued that female dispersal is a more common social state option than was previously thought, with a widespread distribution across primate taxa, and when fission–fusion sociality allows females to manage their social lives, reducing resource and reproductive competition while maximising access to positive social networks and helpers, it will be associated withfemale dispersal as an effective tool for female choice of social companions.

Cultures in chimpanzees

It is found that 39 different behaviour patterns, including tool usage, grooming and courtship behaviours, are customary or habitual in some communities but are absent in others where ecological explanations have been discounted.

Socioecological factors of male chimpanzee migration at Bossou, Guinea

More adult males than females disappeared from Bossou, Guinea, west Africa, and it is highly likely that some of these males emigrated rather than succumbed to sickness and death.

Dispersal Patterns of Female Northern Muriquis: Implications for Social Dynamics, Life History, and Conservation

A unique set of data on female dispersal patterns in the northern muriqui population at the Reserva Particular do Patrimonio Natural – Feliciano Miguel Abdala (RPPN-FMA) in Caratinga, Minas Gerais, Brazil is presented.

Female philopatry and its social benefits among Bornean orangutans

Although maternally related adult female dyads showed similar home-range overlap as unrelated dyads, females spent much more time in association with known maternal relatives than with other females, suggesting that unrelated females may pose a threat to infants.

Co-Residence Patterns in Hunter-Gatherer Societies Show Unique Human Social Structure

It is found that hunter-gatherers display a unique social structure where either sex may disperse or remain in their natal group, adult brothers and sisters often co-reside, and most individuals in residential groups are genetically unrelated, which suggests large social networks may help to explain why humans evolved capacities for social learning.

Demographic parameters and life history of chimpanzees at Bossou, Guinea.

  • Y. Sugiyama
  • Biology, Psychology
    American journal of physical anthropology
  • 2004
The rate of disappearance from Bossou dramatically increases during the adolescent stage, and most young chimpanzees disappear before or around maturation, and the lifetime reproductive success of Bossou chimpanzees is estimated to be highest among long-term study sites.