primate behavior Flashcards
why study non human primates?
to understand the interrelationships of Subsistence Defense Reproduction Environment Social structure
primate behavior trends
Group Composition At least one female & offspring Usually several individuals; from 6 to several hundred Mother-Infant Bonds Peer Group Interactions Communication Home Range Affective Behaviors Dominance
one male multifemale
Single adult male, several adult females and their offspring
Only one male actively breeds
Usually females from the permanent nucleus of group
Most common social group
multimale multifemale
Several adult males, several adult females, and their offspring
Many males reproduce
Dominance hierarchy
Matrilines
monogaous pair
Mated pair and its young
Minimal sexual dimorphism
Territoriality
Least common social group
polyandry
One female and two males
Seen only in NWM
Male participate in care of infants
solitary
Individual forage for food alone
mother infant bond
Key to proper social interaction & survival later in life
Learn strategy by observation & imitation
Long learning periods is an adaptive strategy
peer group interactions
Play groups
Young primates of similar age associate for increasing periods to time
Learn adult behavior
Establish dominance hierarchy
communication
Vocal & non-vocal signals
Vocal signals are discrete, directed signals
Non-vocal communication utilizes body, especially head and face
Fine muscle control of the face
Displays are elaborate combinations of behaviors
affective behaviors
promote group cohesion
mounting
Ritualized behavior Higher ranking individuals mount hindquarters of subordinates Expresses dominance Not sex Often sex individuals Removed from reproductive context Reinforce and clarify social roles
grooming
Occurs in a variety of contexts Mothers groom infants Males groom sexually receptive female Subordinates groom the dominant Provide reassurance during tense situations Restores peaceful relationships
dominance
Impose degree of order
Aggression frequently used a means of increasing status
Measured by access to resources
Food
Mating partners
Not permanent and changes throughout life
Learned behavior
home range
Specific geographic area
Generally know by females – “mental map”
Passed onto offspring; part of mother/infant bonding experience
May overlap, but generally spaced either regionally or temporally