Receiving severe aggression correlates with fetal gender in pregnant pigtailed monkeys
Article first published online: 13 OCT 2004
Copyright © 1981 John Wiley & Sons, Inc.
Volume 14, Issue 3, pages 267–272, May 1981
How to Cite
Sackett, G. P. (1981), Receiving severe aggression correlates with fetal gender in pregnant pigtailed monkeys. Dev. Psychobiol., 14: 267–272. doi: 10.1002/dev.420140315
- Issue published online: 13 OCT 2004
- Article first published online: 13 OCT 2004
- Manuscript Revised: 3 SEP 1980
- Manuscript Received: 6 AUG 1980
Pregnant females were severely bitten in 220 of 2,822 conceptions among pigtail macaques living in harem groups. These pregnancies yielded 58.6% female offspring compared with 48.5% for nonbitten pregnant animals. The fetal gender difference occurred only after midterm, reaching a peak of 70% female fetuses in the 4th gestational month. Fetal gender thus appeared to influence maternal behavior, appearance, or physiology in some way detectable to other monkeys with the consequence of altering risk for receiving severe aggression.