Term
| Morphological Traits of Hominoids |
|
Definition
brachiation
highly flexible shoulder
arms are long relative to trunk
modified shoulder/torso morphology
no tail
brain differences
Y-5 molars |
|
|
Term
| Behavioral Traits of Hominoids |
|
Definition
below-branch suspensory movement
orthograde posture
sleep in nests
great variation in social organizations
reflected in sexual dimorphism
slow life history
cognitive skills |
|
|
Term
|
Definition
| frugivorous, also leaves, flowers, insects, etc |
|
|
Term
| Hylobate Activity Pattern |
|
Definition
| diurnal, arboreal brachiator |
|
|
Term
| Hylobate Life History Pattern |
|
Definition
1st reproduction- 9 years
offspring-1
IBI- 30 months
lifespan- 44 years
gestation-205 days
infant-0-24 months
juvenile-24-54 months |
|
|
Term
|
Definition
Males- maximize reproductive success by access to females
females- best choice male
SM/MF, MM/MF make most sense then
10-15% primates monogamous
close proximity and distress when separated
monomorphism
duetting in diurnal
territoriality |
|
|
Term
| Hypothesis Behind Monogamy: Dispersed Females |
|
Definition
| females distributed in such a way males cannot defend all at once; better reproductive success by mate guarding than mating promiscuously |
|
|
Term
| Hypothesis Behind Monogamy: Male Defense |
|
Definition
| females energetically limited; cannot scan for predators and get enough food without male to protect territory |
|
|
Term
| Hypothesis Behind Monogamy: Paternal Care |
|
Definition
| female reproductive success would suffer without males |
|
|
Term
| Hypothesis Behind Monogamy: Infanticide |
|
Definition
| increased paternal certainty; mates protect against outside males |
|
|
