ANTB22H3 Lecture Notes - Lecture 5: Ring-Tailed Lemur, Social Grooming, Cayo Santiago

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27 Feb 2011
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Lecture 5 Feb.10.11 BLUE FONT
SLIDE DOMINANCE:
High dominance ( good genes”)
SLIDE AGONISM:
more subtle interactions (e.g approach/withdraw, displacements, facial threats,
cowering, etc) doesnt have to be violent or touching can be a signal all types of
agonism
SLIDE HOW IS DOMINANCE STATUS MEASURED?:
Decided (clear winner or loser)
Pic of ring tailed lemur (clear female dominance)
Undecided (cannot tell who is dominant)- hit but no clear out come
Pic of red bellied lemur ( no clear female dominance)
SLIDE DOMINANCE:
Easily identifiable hierarchy No discernable hierarchy
Baboon lots of aggression easily identifiable hierarchy, true for alot of OWMs
DOMINANCE 2:
Some w/in-group dominance relationships are linear hierarchies (Transitive: A>B>C;
A>C)
Some are non-linear ( non-transitive: A>B, B<C, C>A) can be found in ring-tailed
lemurs
SLIDE HOW IS DOMINANCE STATUS COMMUNICATED?:
Ring tailed lemur if ears are flat or go flat- low ranking, ear are up high ranking
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SLIDE SIGNALS OF DOMINANT/SUBORDINATE STATUS:
Presentations (submissive signal)
Displacements (also called supplants) lower ranking loses spot to higher
Subordinate individual get displaced
SLIDE SIGNALS OF DOMINANT/SUBORDINATE STATUS 2:
Bared-teeth display
Mounting (macaque)
Open-mouthed stare
SLIDE SIGNALS OF DOMINANT/SUBORDINATE STATUS 3:
Fear grimace- these signal are sometimes used to say okay i know where my place is
i don;t need to physical hurt me
SLIDE SIGNALS OF DOMINANT/SUBORDINATE STATUS 4:
Greetings (e.g. pants-grunts in chimps)
SLIDE BENEFITS OF DOMINANCE:
Dominance confers priority of access to resource
oFor females, high rank can lead to higher RS (reproductive successes)( # of off-
spring)
oWhy? Better access to food improves body condition
SLIDE BENEFITS OF DOMINANCE 2:
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Document Summary

 more subtle interactions (e. g approach/withdraw, displacements, facial threats, cowering, etc) doesn"t have to be violent or touching can be a signal all types of agonism.  pic of ring tailed lemur (clear female dominance)  undecided (cannot tell who is dominant)- hit but no clear out come.  pic of red bellied lemur ( no clear female dominance)  baboon lots of aggression easily identifiable hierarchy, true for alot of owms.  some w/in-group dominance relationships are linear hierarchies (transitive: a >b >c;  some are non-linear ( non-transitive: a >b, b a) can be found in ring-tailed lemurs.  ring tailed lemur if ears are flat or go flat- low ranking, ear are up high ranking www. notesolution. com.  displacements (also called supplants) lower ranking loses spot to higher. Fear grimace- these signal are sometimes used to say okay i know where my place is i don;t need to physical hurt me.

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