Sources of variation in interbirth intervals among captive bonnet macaques (macaca radiata)

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Female fitness is a function of variation in the length of females' reproductive careers, the viability of their offspring and the frequency with which they give birth. Infant loss shortens interbirth intervals in most primate species, but we know considerably less about other factors that contribute to variation in the lenght of interbirth intervals within groups. In one large captive group of bonnet macaques, maternal parity, age, experience, family size, and recent reproductive history are all associated with variation in the lenght of intervals that follow the birth of surviving infants. Primiparous females have the longest interbirth intervals while multiparous females who have produced surviving infants in the past and have raised their last infant successfully have the shortest interbirth intervals. Infant sex and maternal rank have no direct effect upon the lenght of interbirth intervals. One of the underlying causes of variation in the length of interbirth intervals after surviving birth seems to be variation in the timing of conceptions among females. Females who conceive early in the mating season tend to have shorter interbirth intervals than other females. However, females who are multiparous, experienced, and have recently raised infants have late conceptions and short interbirth intervals.

Original languageEnglish (US)
Pages (from-to)213-230
Number of pages18
JournalAmerican Journal of Physical Anthropology
Volume82
Issue number2
DOIs
StatePublished - 1990
Externally publishedYes

Fingerprint

Macaca radiata
infant
family size
Parturition
Birth Intervals
fitness
Reproductive History
Maternal Age
Group
parity (reproduction)
Parity
career
Primates
breeding season
cause
Mothers
viability
history

ASJC Scopus subject areas

  • Agricultural and Biological Sciences (miscellaneous)
  • Anthropology

Cite this

Sources of variation in interbirth intervals among captive bonnet macaques (macaca radiata). / Silk, Joan.

In: American Journal of Physical Anthropology, Vol. 82, No. 2, 1990, p. 213-230.

Research output: Contribution to journalArticle

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