03Hrdy06x - L a n g u r s U s in g t h e s k ill a n d a u...

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Unformatted text preview: L a n g u r s U s in g t h e s k ill a n d a u d a c it y o f D a v e S h u t le r Natural history- SE Asian primates- s 1.5 X mass of s (18 vs. 12 kg) 1. Troops : adult s, daughters, , infants, & ad. troop leader + ~3 ad. subordinates- ~25 members- territorial, defend borders with displays, injuries rare- leaders drive out sons before sexual maturity 2. bands- s only- ~60 members- wander; members until death or until take over troop Obs(ervations)/Pattern 1. Disputes solved civilly Q(uestion) 1. Why? [to board] H(ypothesis) 1. Highly evolved- langurs like humans, well-behaved Prediction 1. Spp. closely related to humans better behaved Obs. 2. ~ Consistent Pattern 2. Leader sires dozens of offspring, band members none Q2. Why forgo reproduction? H2. Inferiority and group benefits- inferior s stay in bands, forgo reproduction to prevent genes from depleting species quality Prediction 2. Injured or genetically deficient in bands AND wont breed if given chance ? Obs. 3. Leaders drive out sons Obs. 4-6....
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This note was uploaded on 02/08/2010 for the course BIOL 3143 taught by Professor Daveshutler during the Winter '10 term at Acadia.

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03Hrdy06x - L a n g u r s U s in g t h e s k ill a n d a u...

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