-
gibbon juvinile period...2
- until 4-4.5y
- play behavior (but less than other primates and only with yonger sibling)
-
benifits/functions of play...3
- develompent/refinment of physical skills
- learn the rules of objects
- develop social skills/bonds
-
gibbon subadult/adult life...
- 4-6y/6+
- threat gestures from adults
- mate and form new social unit
-
The area that a group defendes against it's own species.
territory
-
where do gibbon territorial conflicts take place?
...how large os this area?...
- at the overlap of group territories
- 23-69m wide
-
a gibbon conflict...4
- vocalisation
- display
- chase
- rare actual fighting
-
the purpose of gibbon territorial behavior...2
- preventing concentration of animals
- control population size
-
habitit explanation of galenda social groups...2
- larger groups are more secure in terrestrial habitat
- big groups split when resources are scarce
-
galenda behavior is dependent on...2
-
galenda infant phase...2
- until 18 months
- black-dark-brown coat
- focal point of group (protection)
- coat changes to red at 6-18m
-
galenda juvenile phase...3
- begins at weaning (1-1.5y)
- independence
- play groups
-
galenda subadult female...3
...male?...3
- 3.5-4.5y
- associates with other females and offspring
- 3.5-6y
- keeps growing
- sexually dimorphic traits (canines, fur cape)
-
whyn would large groups lead to greater sexual dimorphism?
greater number af females leads to more intrasexual selection.
-
members of typical galenda harem...
- (11 members)
- 1 male
- 5 adult females
- 5 juveniles and infants
-
galenda harem unit...
- females bond (grooming)
- male on periphery
- outside females threatened
-
Behavior that involves fighting, threats, and fleeing.
agonistic behavior
-
what is the difference between agonistic behavior and agression?...2
- a broad range of dominance and submission behaviors are agonistic
- dysplay and gesture instead of fighting
-
some agonistic gestures...6
- staring
- raising eyebrows
- lunging in space
- slapping the group
- jerking head back and forth
- displaying teeth
-
galenda juvenile male...3
- first play groups
- then the all-male group
- they becomes a "follower male" to a harem
-
galenda juvenile female...3
- first play groups
- puberty-interest in males and infants
- sexual maturity-interest in group leader
-
the two ways harems form...
- young female and follower male start a new group
- follower male attacks older male and takes control of harem
-
Among galendas, a social group consisting of a number of harems and all-male units
band
-
Among galendas, a large social unit consisting of several bands that come together under very good grazing conditions
herd
-
A multimale group found among baboons and other primates
troop
-
well-studied primate besides humans and chimps...
...why?...2
- savanna baboons
- because they are easy to see in their wide open habitit
- because anthropologists are interested in the fact that humans anf baboons both adapted to the savannah
-
two explainations for variability in social organization within one species...
- environment
- learned behavioral patterns
-
baboon troops/home range...
- about 40 animals
- stay within distinct boundaries of home range
- no defened territorries
- extentisive home range overlap
- troops ignore each other
-
Sections within the home range of a primate population that may contain a concentration of food, a source of water, and a good resting place or sleeping trees, and in which most of the troop's time is spent
core area
-
size of the core area depends on...2
- size of troop
- concentration of food
-
baboon diet...3 groups
- primarily grass
- seeds, flowers, fruit
- insects, small reptiles, mammal flesh
-
A system of social ranking based on the relative dominance of the animals withinn a social group.
dominance hierarchy
-
The situation in which one animal can cause another to move away from food, a sitting place, and so on.
displacement
-
A behavior involving a subordinate primate showing his or her anal region to a dominant animal
presenting
-
A behavioral patten whereby one animal jumps on the posterior area of a second animalas a part of the act of copulation or as a part of dominance behavoir
mounting
-
most dominant baboon male...6
- good physical condition
- offspring of highest-ranking females
- supported by other dominant males
- can keep position even in old age
- recieves preference of food
- dominates reproductive females
-
behavoirs that show the dominance hirerachy in baboons...3
- displacement
- presenting
- mounting
-
female baboon dominance hirearchy...3
- less often than males
- determined by mother's rank
- more significant to females than to males
-
subadult baboon male...2
- leaves their troop
- oftern dies on dangerous journey
-
the relative position of females dependes on...
- whether she is sexually receptive
- whether she has an infant
-
reproductive cycle of baboon is how many days long?...
35
-
a mature ovum moves from the ovary to the fallopian tube
ovulation
-
period of sexual receptivity; does not occur during pregnancy or lactation
estrus
-
Act of female mammal producing milk
lactation
-
A temporary alliance between a male and an estrus female.
consort pair
-
sexual signs...2
- sexual skin swelling
- olfactory cues
-
why will the dominant males probably father most of the baby baboons?
because the subordinate males make the first advances and the dominant males copulate around the time of ovulation
-
A small group of closely related females that engage in a high degree of grooming.
grooming cluster
|
|
