Relationships Between Adult Male and Maturing Mountain Gorillas (Gorilla beringei beringei) Persist Across Developmental Stages and Social Upheaval

Stacy Rosenbaum, Jean Paul Hirwa, Joan Silk, Tara S. Stoinski

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Across the animal kingdom, long-term social relationships outside the context of reproductive pair bonds are rare. However, they have been demonstrated in some mammals including primates, cetaceans, and social carnivores. The ontogeny of such relationships is likely to depend on the benefits individuals can gain by cultivating them. Previous studies demonstrated that young mountain gorillas (Gorilla beringei beringei) have strong relationships with adult males, but little is known about the longevity of these bonds. Here, we examine the temporal stability of proximity relationships between coresident adult male and maturing gorillas in the habituated population monitored by the Dian Fossey Gorilla Fund International's Karisoke Research Center in Volcanoes National Park, Rwanda. We used spatial proximity data to assess the strength of relationships between adult males and juveniles, and tracked these relationships as the juveniles matured into subadults (3-4 yr later; n = 229 dyads) and then young adults (7 yr later; n = 42 dyads). The proximity relationships of juveniles of both sexes predicted their proximity relationships with adult males in both subadulthood and young adulthood. However some young adult males who had lost their top adult male proximity partner from juvenilehood developed new relationships with older males that had risen in the dominance hierarchy. These data suggest that (1) kin selection may play a more important role in social relationships between potential fathers and adult female offspring than previously suspected, and (2) when maturing males' foremost adult male social partners remain available to them, their relationships can be stable past the age at which younger males become reproductive competitors.

Original languageEnglish (US)
Pages (from-to)134-150
Number of pages17
JournalEthology
Volume122
Issue number2
DOIs
StatePublished - Feb 1 2016

Fingerprint

Gorilla beringei
Gorilla gorilla
developmental stage
mountains
developmental stages
mountain
young adults
Gorilla
pair bond
kin selection
Rwanda
volcanoes
cetacean
spatial data
fathers
carnivore
ontogeny
carnivores
primate
dominance (genetics)

Keywords

  • Inter- vs intrasex relationships
  • Kin selection
  • Long-term social relationships
  • Male-immature relationships
  • Social stability

ASJC Scopus subject areas

  • Animal Science and Zoology
  • Ecology, Evolution, Behavior and Systematics

Cite this

Relationships Between Adult Male and Maturing Mountain Gorillas (Gorilla beringei beringei) Persist Across Developmental Stages and Social Upheaval. / Rosenbaum, Stacy; Hirwa, Jean Paul; Silk, Joan; Stoinski, Tara S.

In: Ethology, Vol. 122, No. 2, 01.02.2016, p. 134-150.

Research output: Contribution to journalArticle

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