readings carolyn jessop escape , broadway books. (pp. 1-8, 72-106, 22-227
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Polygyny and prostitution Guest lecturer: Rose McDermott. Readings Carolyn Jessop Escape , Broadway Books. (pp. 1-8, 72-106, 22-227 Rose McDermott (2011) Expert Report with regard to The Polygamy Reference, Court No: Supreme Court of British Columbia, S- 097767 (pp. 1-25) - PowerPoint PPT PresentationTRANSCRIPT
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Readings
Carolyn Jessop Escape, Broadway Books. (pp. 1-8, 72-106, 22-227
Rose McDermott (2011) Expert Report with regard to The Polygamy Reference, Court No: Supreme Court of British Columbia, S-097767 (pp. 1-25)
Libby Copeland (2012). The problem with polygamy. Slate.com, January 30, 2012, pp. 1-2 (Comment on Henrich et al 2011).
Polygyny and prostitution
Guest lecturer: Rose McDermott
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DEFINITIONSMonogamy
1 female, 1 malePolygamy
Polygyny: 1 male, multiple femalesSimultaneous Polygynous family
FLDS; SchwarzeneggerSequential New bond
(remarriage)
Newt GingrichPolyandry: 1 female, multiple males
Simultaneous Polyandrous family
Nepal-TibetSequential New bond
(remarriage)
Elizabeth Taylor
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Mating (breeding) system
PolygynyMonogamy
Polygyny Many mammals AbsentSocial e.g. gorilla(bonding)system
Monogamy Most birdsA few birds
e.g. fairy-wren e.g. black
vulture
Some humans
TWO USES OF ‘POLYGYNY’ AND ‘MONOGAMY’
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Superb fairy-wrenPair-bonded; pair-bond stable across yearsFemales hold territories up to 8 yearsOften with male helpers, mostly female’s sons
Extra-pair copulations95% broods (n = 40) included extra-group fathers76% offspring (n = 181) from extra-pair copulations
Helpers (non-mating males) present dominant male helps less female mates with more extra-group males female produces sons that are chosen more as
mates
Mulder et al (1994) Proc Roy Soc B 255: 223-229.
The male is brighter than the female
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Mulder et al (1994) Proc Roy Soc B 255: 223-229.
Superb fairy-wrenMale mating
polygyny
Males repeatedly court extra-group females, but no immediate mating
Courted females later choose to return to mate specific males
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Human systems
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Human breeding systems & subsistence
Foraging Horticulture -> Agrarian Industrial
Family Nuclear Extended Nuclear
Residence Varies NeolocalMostly patrilocal
Self + kin SelfSpousechoice Lineage groups
Society
Mon (+ Pol) MonogamyMarriage Polygyny
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Widespread: 83% societies (of 849 world-wide)
More in high-status men; often sororal (35%)
ConcubinesManchu Emperor
Bedouin
Simultaneouspolygyny
AustralianCongo
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Ibn Saud1880-1953
Founder and first King of Saudi Arabia, 1932-53
Unified warring tribes
How many male descendants? (= Crown princes)
Estimated at 5000 - 7000!
(from 150 wives)
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Kipsigis, Kenya (Mulder)
Polygynous18 African countries 1921-51
Monogamous
% wives
% husbands39% 61%
61% 39%
van den Berghe 1981
Sex differences in marriage within polygyny
Often: most women polygynous
Most/all women marriedUsually most men monogamous
Many men unmarried (trouble!)
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Serial polygyny, USA
Mueller & Mazur (2001) Behav Ecol Sociobiol
440 West Point graduates 195022% --> 2nd marriage
NOChildren per wife
HealthSES
YES# Marriages# Divorces
Younger 2nd wife
Height more RS. How??
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Simultaneous polygyny USA
Tom Green, Utah
7 wives
29 children
5 year jail-term
Utah polygamists in prison, early 20th century
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“Socially imposed monogamy”Industrial Societies
Polygyny forbidden
Associated with large complex societies, e.g. Ancient Rome
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Foraging Societies
Polygyny allowed but difficultif men provide meat (all men roughly equal in value)
“Ecologically imposed monogamy”
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“Ecologically imposed monogamy”Africa: mostly monogamousSuccessful men -> 2 wives
Australia: mostly polygynousSuccessful men > 10 wives
Efe
HadzaTiwi
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Simultaneous polyandry
Rare: 4 societies in 849 (0.5%)
Polyandrous wedding, Nepal
Found mostly briefly, in low-status men
Often fraternal
Always co-occurs with polygyny (high-status men are polygynous)
Low-status man, Yanomamö
One wife, plural husbands
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Extreme male power tends to be used for reproduction
Stratified societies: significant wealth at top
Females compete to be attractive
Top males buy as many females as possible
Males want easily-guarded females
M. Dickemann 1979-81
Ecology of hypergyny (females marrying up)
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Tendencies of powerful men in all major civilizations
MesopotamiaEgyptAztecIncaIndiaChina
Mated 100’s or 1000’s of women
Chose virgins
Monitored health, fertility
Used wet nurses
Secluded women in clothes and fortifications
Guarded women with eunuchs or women
Terrible punishments for adultery
Easy access to women of less powerful men
Bathsheba (Rembrandt) Betzig (1993)
Collected women as spoils of war
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Extent of polygyny parallelled a man’s powerChina 600 AD
Emperors: thousands of women
Great princes: hundreds
Nobility, generals, princes: ~30
Upper middle-class men: 6-12
Middle-class: 3-4
Betzig (1993)Concubines, Manchu dynasty
Emperor: thousands of womenLords: > 700“Principal persons”: 50Leaders of vassal nations: 30
Leaders of 1000: 15Heads of 100,000 provinces: 20
Governors of 100: 8Petty chiefs of 50: 7Chiefs over 10: 5Chiefs over 5: 3Rest: good luck!
Inca 1500’s AD
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Powerful men in major civilizations
MesopotamiaEgyptAztecIncaIndiaChina
Married monogamously
Selected a single male heir
Inbred with well-endowed women
Imposed celibacy on many younger sons
Imposed celibacy or suicide on widows
Imposed celibacy on many daughters
Suleiman - killed all sons except one, to ensure succession
Betzig (1993)
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“As marriage historian Stephanie Coontz has pointed out, polygyny is less about sex than it is about power.” (Copeland 2012)
Male gets female laborMale gets respect from other males (via controlling access to daughters)
But polygyny also systems for increasing reproductionNo males in regal palace (Uganda)Eunuchs
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Wealth & polygyny
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Animal polygyny: high RS for males
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Male Wealth
FemaleRS
10
5
0
Who should she marry? The polygyny threshold model
First wife
Second wife
Poor Dude (as WIFE #1)
Rich Dude (as WIFE #2)
4
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Significance of the Polygyny Threshold Model
Shows importance of male control of resources
Explains polygyny as partly due to female interests
Predicts polygyny if large inequality among males
Predicts monogamy if NO inequality among males(female should always prefer unmated male)
Predicts little reproductive inequality among females
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Women Men
8
6
4
2
0
TotalChildren
Bornby age
60
Richer 50% Poorer 50%
Irons 1979
Support for the Polygyny Threshold ModelTurkmen,Iran, 1970’s
1. Rich women do slightly better2. Rich men do much better
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Sexual selection in Kipsigis (western Kenya) (Borgerhoff-Mulder)
Patrilocal residence Wealth varies
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Kipsigis: rich men
Large fieldsDivided for co-wives
Cooperative male groups
Large cattle herds
Big wedding party
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Bride-price negotiationKipsigis: rich men
More wives
More children
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Kipsigis: co-wives
Mostly work individually
Friends cooperate Children help
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Polygyny in Kipsigis:bad for poor co-wives
0 1 2 30
2
4
6
8
# co-wives
Rich husband
Mid-wealth husband
Poor husband
RS
Poor co-wives --> low RSRich co-wives --> high RS
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Females tend to benefit from a pair-bondAche: father leaves (death or divorce) ->
50% increase in child’s death rate
Ache, Paraguay
Hill & Hurtado 1995
Child survival