ANTA01H3 Lecture Notes - Lecture 3: American Sign Language, Folivore, Kanzi
Document Summary
Opposable thumbs, big toe: relatively large brain, improvement of visual features at the expense of the nose. Postorbital bar: lack of dietary specialization, mostly arboreal, living in tropical forests, mostly equatorial, extended life history traits. K-selected relative to other mammals: grasping extremities- thumb/big toe divergent from other digits. In non-primates: lacks opposable thumb/big toe; has claws: relatively large brain- large brain relative to body mass, vision- larger eyes close together, reduced nasal region. Better at seeing things in 3d in close distances. Critical for seeing cryptic animals and fruits in dense vegetation, unstable objects. Around eye, all the way around: diet- lack of food specialization. All primates eat at least some fruit: current distribution of living primates. Live in tropical forests: life history- long gestation period. Relatively long lives: k-selected- adaptive strategy where indiv. Produce relatively few offspring, in whom they invest increased paternal care.
