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Friday, January 27, 2017

Male baboons and domestic violence.

Male baboons and domestic violence. Male baboons turn to domestic violence for a chance to mate and sire their own offspring. A study shows that male baboons turn to domestic violence when in a group with few fertile females so they kill infants sired by other males and attack pregnant females, causing them to miscarry, so as to have a mating chance . This behavior reduces their waiting time to breed with pregnant and nursing females, who otherwise wouldn't become sexually available again for up to a year. This study which appeared in Proceedings of the Royal Society B, is a result of a long-term study of wild baboons monitored on a near-daily basis since 1971 at Amboseli. Researchers studying a baboon population around Amboseli National Park in southern Kenya found that immigrant males were responsible for roughly 2 percent of infant deaths and 6 percent of miscarriages between 1978 and 2015 and when cycling females were few, the death rates more than tripled. In situations where males have few opportunities, they resort to violence to achieve what's necessary to survive and reproduce,and When reproductive opportunities abound, this behavior is less frequent. At any given time, a troop of baboons typically contains one or two newly arrived males that have left the group where they were born in search of opportunities to reproduce and pass on their genes elsewhere. A baboon male would normally have to wait at least a year for a pregnant or lactating female to finish gestating and nursing her infant and resume cycling for a chance to sire her next offspring. When female have no baby to gestate or feed anymore , females that suffered a miscarriage or the death of an infant were ready to conceive again within 41 days. The study showed that most killer males went on to mate with the mothers of their victims.