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Reproductive synchrony in captive macaques.

Joan B Silk1

  • 1Department of Anthropology, University of California, Los Angeles; California Primate Research Center, University of California, Davis.

American Journal of Primatology
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PubMed
Summary
This summary is machine-generated.

Seasonal reproduction in bonnet macaques shows that conceiving during peak mating season reduces infant survival. This reproductive synchrony most impacts primiparous and low-ranking females, potentially due to increased aggression.

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Area of Science:

  • Primate reproductive biology
  • Animal behavior
  • Conservation science

Background:

  • Captive bonnet macaques exhibit seasonal reproductive patterns.
  • Understanding factors influencing primate infant survival is crucial for population management.

Purpose of the Study:

  • To investigate the relationship between reproductive synchrony and infant survival in captive bonnet macaques.
  • To identify specific demographic factors (parity, rank) affected by reproductive synchrony.
  • To explore behavioral mechanisms, such as aggression, underlying observed mortality patterns.

Main Methods:

  • Analysis of conception timing and infant survival rates in a captive bonnet macaque population.
  • Correlation of reproductive synchrony with female parity and social rank.
  • Behavioral observations to quantify aggression levels during the mating season.

Main Results:

  • Females conceiving at the peak of the mating season had significantly lower chances of producing surviving infants.
  • Primiparous and low-ranking females were disproportionately affected by high reproductive synchrony.
  • Aggression levels toward females were highest during peak conception months, suggesting a link to infant mortality.

Conclusions:

  • High reproductive synchrony in bonnet macaques is associated with reduced infant survival.
  • Social factors, including aggression and female rank, play a significant role in reproductive success.
  • Management strategies should consider the impact of social dynamics on seasonal breeding outcomes in captive primates.