Fetal gender and aggression in pregnant stumptail monkeys (Macaca arctoides).
Agonistic behaviors of pregnant female stumptail monkeys, members of a large, well-integrated group continuously living together, were studied during 480 observation hours (over 32 months). A total of 28 pregnancies of 20 females occurred, resulting in 12 male and 16 female live infants. The main finding was a significant decline in aggression, both received and performed, during the course of pregnancy. There was no clear unequivocal effect of fetal gender on aggressive behavior of the mothers-to-be.
Nieuwenhuijsen
K
K
Department of Endocrinology, Growth & Reproduction Faculty of Medicine, Erasmus University Rotterdam, The Netherlands.
Slob
A K
AK
de Neef
K J
KJ
D000374:Aggression / Q000502:physiology*; D000378:Agonistic Behavior / Q000502:physiology*; D000818:Animals; D005260:Female; D008254:Macaca nemestrina; D011247:Pregnancy; D011270:Pregnancy, Animal / Q000502:physiology*; D012733:Sex Differentiation; D013739:Testosterone / Q000502:physiology
D013739:Testosterone