1. Primates : mammal order with about 185 spp.
(out of 4500 mammal species)
Squirrel monkey from cent and south america
vs. bonnet macaque - from asia- old-world monkey
bonnet macaque squirrel monkey

2. Sister order = tree shrews?
Primates
Sister order = tree shrews?
(order Scandentia)
- largely tree-dwelling
(arboreal) and tropical
Tupaia
56 mya – opposable toe,
for grasping
MRCA of all primates lived about 80 mya

3. stereoscopic color vision, bony orbits protect eyes
CHARACTERISTICS:
stereoscopic color vision, bony orbits protect eyes
large brain relative to body size
Baboon hand

4. Digits with independent mobility and opposable thumb
Baboon Hand
Digits with independent mobility and opposable thumb
Flat nails, no claws, sensitive fingers

5. Prosimians Loris Lemurs (Asian) Loris Asia slow movers, nocturnal,
galago - african
also nocturnal, acute sense of smell - subsaharan
mystery cameroon animal?
(Asian)
Lemurs

6. Tarsiers
Completely carnivorous
good leaping ability
nocturnal
southeast Asia

8. red uakari pygmy marmoset NEW WORLD MONKEYS Uakari - upper Amazon
leapers, never come to ground
head becomes pink when agitated - signal
prehensile tail
red uakari
pygmy marmoset

9. Proboscis monkey Hamadryas baboon OLD WORLD MONKEYS
Borneo leaf eater, big nose only in adult male
sexually selected character
Proboscis monkey
Hamadryas baboon

10. The Hominoidea split from the Old-world monkeys 28-30 MYA
Nature 497, 611–614 (30 May 2013)

11. Hominoids: Gibbons brachiation posture more erect than in monkeys
arms and shoulders more flexible, spine stiffer
broader, larger pelvis
loss of a tail
five-cusp lower molars instead of four
scapulae more dorsal so arms can be extended laterally

12. fraction of total brain
mammals
neocortex
fraction of total brain
cerebellum
Hominoidea

13. orangutan
"How about this zoo diet!"

14. Bornean
orangutan
Sumatran
orangutan

15. human chimpanzee gorillla orangutan
habitual
brachiation

16. Orangs, genus Pongo
"old man of the woods"
fruit eaters, not social, males territorial
only occasionally on forest floor
especially endangered in Malaysia

17. Males twice as large as females
gorilla

18. Lowland Mountain

19. Gorilla - genus Gorilla
small groups of 10-20
Dominated by male silverback, male-male competition - POLYGYNY
Males almost twice as big as females

20. Figure 1 Western equatorial Africa
Figure 1 Western equatorial Africa. Commercial hunting is concentrated near transport routes (major roads in white), whereas Ebola impact has been heaviest in remote areas. Ape density in the Minkébé forest block (shaded area in northern Gabon) has dropped by about 99% over the past decade. The Ebola epidemic is currently most severe between Lossi and Odzala National Park. Observations of unpredated ape carcasses span 600 km, from 40 km west of Booue to the Nouabale–Ndoki region of northern Congo.
Walsh et al NATURE 422:611:614

21. Genus Pan
chimpanzees
"flo" and her 8-month infant

22. bonobo
chimpanzee

23. Chimpanzee
Bonobo

24. Kin groups

25. Extensive
tool use

26. Communicating and probing a hidden "snake"

27. Common chimpanzee
Pan troglodytes
extended child care, prolonged adolescence
puberty at 8-10 years
feed, sleep in trees, but often on ground
polygamous (promiscuity), highly social

28. Bonobo - Pan paniscus

29. much less well known, deep in rain forests of Congo
Bonobo
Pan paniscus
much less well known, deep in rain forests of Congo
more upright posture, less "violent" than chimps?
female bands control resources; form hierarchy
male "standing" depends on its mother's

30. How are the hominoids related to each other?
The "Line-up"
Gibbon Orangutan Chimpanzee Gorilla Human

31. Hominidae Hylobatidae Pongidae Are gorillas and chimps
millions of
years ago
gibbon
chimpanzee
gorilla
orangutan
human
Hominidae 6
Hylobatidae
Pongidae
Are gorillas and chimps
each other's closest
relatives? 12

32. Only three possibilities:
Go Ch Hu Go Hu Ch Hu Ch Go
WHICH IS CORRECT?

33. Orang Gorilla Chimp Human Pongo Gorilla Pan Homo
% divergence of nucleotides at globin pseudogene
Orang Gorilla Chimp Human
Pongo Gorilla Pan Homo
1.56
0.38
Orang
Gorilla
Chimp
Human

35. Alleles in populations coalesce to a common ancestor

36. Incomplete lineage sorting: Gene trees do not always match species trees

37. Phylogenetic relationships constructed by weighing evidence from multiple genes

38. Data from clock-like genes suggest:
Split between orangs and mya
chimp-human-gorilla clade
Split between gorillas and mya
human-chimp clade
Split between human and mya
chimp from common ancestor