ANT 201 Chapter Notes - Chapter 19: Gray Langur, Dysgenics, Infant Mortality
11 Dec 2016
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(revisit) eab: sarahblaffer : infanticide as a primate reproductive strategy (46-55: introduction, hanuman langur. 80% day spend on ground to feed and groom. Arboreal, but built like grey-hounds and can cover distances on ground with speed and agility. 400 meters in himalayas down to sea level habitat range --> moist montane forest to semi desert: social organization. Overlapping generations of close female relatives who spend entire lives in same matrilineally inherited 40 hectare plot of land. Troops avg 25 individuals : 3+ adult males but many times only 1 present: males leave natal troop, all male bands : 2-60. Females remain in same range and company of same other females. Closed social units; troops spaced out in separate ranges with some overlap: male and female defend territory: whooping, canine grinding, daring leaps ---> intertroop encounters largely bravado and almost never result in injuries. --> later rejected hypothesis: john calhoun: studying effects of crowding on behavior of rats.
