Three anatomical differences between NW & OW monkeys
1.
2.
3.
1. Tail
2. Number of premolar teeth
3. Shape of nose
1. Some NW monkey species have _____ tails
prehensile (grasping)
2. NW monkeys have dental formula ______ or ______. That is, NW monkeys have __ premolar teeth in each quadrant of mouth
2,1,3,3/2,1,3,3 or 2,1,3,2/2,1,3,2
3 premolar teeth
3. NW monkeys have a ___ nose
broad (i.e., broad nasal saptum)
NWM ____ diurnal (during the day)
are (with one exception)
All OWM and hominoids are (diurnal or nocturnal)
diurnal
New world monkey are ____ (where they live)
arboreal
(They live in tress)
OWM and hominoids are hominoids are arboreal whereas others are terrestrial
Diet among NWM species is varied
True)
False)
True
(Frugivory, folivory, gummivory)
Some new species of NWM (typically the small body monkeys) are ____
polyandry (one female, multiple males)
Species with a _____ mating system show sexual monomorphism in body size and canine tooth size; males and females are equal in size
monogamous
Some small-bodied NWM species have a ____ mating system
-Females are of small body size and give birth to twins
-Mother needs "helpers" to carry the twins, otherwise her foraging efficiency and ability to avoid predators are compromised
-Two adult males (father and non-father) assist in carrying the twins
-Several males assist in the offspring care because they are "uncertain" about paternity