Exteroceptive factors and pregnancy block in the Mongolian gerbil, Meriones unguiculatus.
A series of experiments based on 150 newly mated, uni- and multi-parous Mongolian gerbils provided no evidence for the existence of pregnancy blocking due to a strangle male effect. The reduced level of fertility observed was attributed to stressful factors at critical times in the pregnancy. Treatment with 10 i.u. PMSG on the day following mating interrupted pregnancy and the majority of females mated again within 4 days.
D000818:Animals; D005260:Female; D005298:Fertility / Q000187:drug effects; D005849:Gerbillinae; D006064:Gonadotropins, Equine / Q000494:pharmacology; D010675:Pheromones / Q000494:pharmacology*; D011247:Pregnancy; D011270:Pregnancy, Animal / Q000187:drug effects*; D012724:Sex Attractants / Q000494:pharmacology*; D012726:Sexual Behavior, Animal / Q000187:drug effects / Q000502:physiology*
D006064:Gonadotropins, Equine; D010675:Pheromones; D012724:Sex Attractants