Reproductive and Life History Parameters of Wild Female Macaca assamensis.

International Journal of Primatology
Ines FürtbauerJulia Ostner

Abstract

Information on basic reproductive parameters and life-history traits is crucial for the understanding of primate evolution, ecology, social behavior, and reproductive strategies. Here, we report 4 yr of data on reproductive and life-history traits for wild female Assamese macaques (Macaca assamensis) at Phu Khieo Wildlife Sanctuary, northeastern Thailand. During 2 consecutive reproductive seasons, we investigated reproductive behavior and sexual swelling size in 16 females and collected 1832 fecal samples. Using enzyme immunoassays, we measured fecal estrogen and progesterone metabolites to assess ovarian activity and timing of ovulation and to ascertain conceptions and pregnancies. Timing of reproduction was strictly seasonal (births: April-July, 86% in April-June, 4 yr, n = 29; conceptions: October-February, 65% in December-January, 2 yr, n = 17). Females showed no cyclic ovarian activity outside the mating season and conceived in their first or second cycle (mean: 1.2 cycles to conception, n = 13). Gestation length was on average 164.2 d (range: 158-170, n = 10), and females had their first infant at an age of 5 yr (n = 4). Interbirth intervals were bimodally distributed, with females giving birth on average every 13.9 or 23...Continue Reading

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Citations

Oct 25, 2011·PloS One·Ines FürtbauerJulia Ostner
Feb 20, 2016·American Journal of Physical Anthropology·Rachel F PerlmanAndreas Koenig
Aug 14, 2012·Developmental Psychobiology·Jessica J VandeleestJohn P Capitanio
Nov 26, 2010·Current Biology : CB·Oliver SchülkeJulia Ostner
Apr 28, 2016·American Journal of Primatology·Christine B HaunhorstJulia Ostner
Aug 23, 2016·International Journal of Primatology·Christin MingeJulia Ostner
Sep 23, 2016·Proceedings. Biological Sciences·Andreas BerghänelJulia Ostner
Dec 2, 2017·Genes, Brain, and Behavior·D R GutlebO Schülke
Jul 3, 2020·The Journal of Animal Ecology·D Susie LeeJames P Higham
Nov 20, 2016·Primates; Journal of Primatology·Manakorn SukmakOliver Schülke
Mar 20, 2021·Primates; Journal of Primatology·Florian TrébouetUlrich H Reichard
May 16, 2021·Scientific Reports·Anna HolznerAnja Widdig

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