After short interbirth intervals, captive callitrichine monkeys have higher infant mortality.

ABSTRACT: Life history theory predicts a trade-off between the quantity and quality of offspring. Short interbirth intervals-the time between successive births-may increase the quantity of offspring but harm offspring quality. In contrast, long interbirth intervals may bolster offspring quality while reducing overall reproductive output. Further research is needed to determine whether this relationship holds among primates, which have intensive parental investment. Using Cox proportional hazards models, we examined the effects of interbirth intervals (short, normal, or long) on infant survivorship using a large demographic dataset (n = 15,852) of captive callitrichine monkeys (marmosets, tamarins, and lion tamarins). In seven of the nine species studied, infants born after short interbirth intervals

SUBMITTER: Frye BM 

PROVIDER: S-EPMC8762461 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature