Timing is everything: Expanding the cost of sexual attraction hypothesis

Krista M. Milich, Janice M. Bahr, Rebecca Stumpf, Colin A. Chapman

Research output: Contribution to journalArticle

Abstract

Anthropogenic disturbances present challenges to animals. Behavioural plasticity is one way that animals adjust to degraded habitats. In the present study, we examined how ecological conditions impact reproduction of female red colobus monkeys, Procolobus rufomitratus, in Kibale National Park, Uganda. Wrangham (2002, Behavioural diversity in chimpanzees and bonobos, pp. 204-215) proposed the 'cost of sexual attraction' hypothesis to explain the relationship between ecology and female reproduction. Here for the first time we test and expand on this hypothesis in a folivorous species, the red colobus monkey. We compared four groups of red colobus, two in previously logged areas and two in old-growth areas, to examine differences in female reproductive behaviours and physiologies. We predicted that, because of differences in food availability, females living in logged areas would (1) have a shorter duration of genital tumescence, (2) mate less frequently and (3) constrain mating behaviours more to periods of maximal genital tumescence compared to females in old-growth areas. As predicted, females in logged areas were fully tumescent for a significantly shorter period, copulated significantly less frequently and showed mating behaviours when fully inflated significantly more than females in old-growth areas. This behavioural plasticity contributes to the maintenance of female reproductive function in the face of environmental constraints associated with anthropogenic disturbance that influences food resources.

Original languageEnglish (US)
Pages (from-to)219-224
Number of pages6
JournalAnimal Behaviour
Volume88
DOIs
StatePublished - Feb 1 2014

Fingerprint

Colobus
cost
mating behavior
plasticity
genitalia
anthropogenic activities
monkeys
disturbance
female behavior
environmental constraint
animal
reproductive behavior
Pan paniscus
animal reproduction
food availability
Uganda
physiology
Pan troglodytes
national park
national parks

Keywords

  • Kibale National Park
  • Mating behaviour
  • Primate reproductive ecology
  • Procolobus rufomitratus
  • Red colobus monkey
  • Sexual strategy
  • Uganda

ASJC Scopus subject areas

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

Cite this

Timing is everything : Expanding the cost of sexual attraction hypothesis. / Milich, Krista M.; Bahr, Janice M.; Stumpf, Rebecca; Chapman, Colin A.

In: Animal Behaviour, Vol. 88, 01.02.2014, p. 219-224.

Research output: Contribution to journalArticle

Milich, Krista M. ; Bahr, Janice M. ; Stumpf, Rebecca ; Chapman, Colin A. / Timing is everything : Expanding the cost of sexual attraction hypothesis. In: Animal Behaviour. 2014 ; Vol. 88. pp. 219-224.
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