Hylobatidae: Asian ("lesser") Apes

Question 1

Location

Answer 1

Asian rainforests

Question 2

Gibbons and Siamangs

Answer 2

No sexual dimorphism in body size but some are sexually dichromatic (color), focus on ripe fruits and eat leaves, brachiators due to long arms-exclusively arboreal, evidence of frequent bone-breaking, monogamous family groups, highly territorial with vocal duets-females reach puberty at 8 yrs produce infants every 3yrs , convergent evolution w/Spider Monkey

Question 3

Family Hylobatidae: Orangutans

Answer 3

Bornean and Sumatran, adapted to the trees-quadrumanous (4 hands) use “bridging”, fruit eaters, tool use for feeding & to stay dry, make nests, extreme sexual dimorphism: males have fleshy phlange, canines, and are hairier, mostly solitary but mothers group together when fruit abundant, females reach puberty at 7 produce infants every 8 yrs w/long infant /juvenile dependency