OMSI Science Pub - Bonobos
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Bonobos and Chimpanzees(Pan paniscus & Pan troglodytes)
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Bonobo: Democratic Republic of the Congo
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Following bonobos and…
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Guides and trackers
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What bonobos do…
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Ecological: Fruits, shoots (THV) and meat
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Chimpanzee communities
• Female with offspring in core areas
• Males work together and are dominant to females
• Food patches small and males feed first
• Male relatives defend community and will attack and kill neighbors
• Tool users
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Chimpanzees
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Bonobos
• Females are highly social
• Males with females not other males
• Food patches never small, females feed first
• Communities are friendly
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Minimum spanning polygons
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Bonobos can use tools
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Termite mounds
• 67 large mounds in 4km x 35m transect
• 36 km2 = 8870 mounds
• 60% with recent termite activity
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Lomako Bonobo termite-fishing tools (n=4)?
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Termite fishing holes?
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Pangolin excavations
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Bonobos
• Sex when not ovulating (1 per 6 hours)
• Face to face mating• All possible age & sex
combinations• Innovative
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Females
• Females enter fruit tree
• GG rub = food to come
• Then eat• Making allies
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Males• Single male with
group of females• Mother’s help with
rank and access• Fighting for best
time to mate• Alternate
strategies (consortships)
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Male v Female
• Females always together
• Males usually alone, tense when together
• Females have power over single male
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Bonobo female power
• Males dominant but deferent when feeding
• Females win over males without fighting
• Females control of prized resources (meat)
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Love and Sex: evolution of the human mating system
• Large brained, dependent offspring
• Paternal care / meat provisioning
• Paternal certainty• Concealed ovulation• Sex outside of
ovulation for pair-bond
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Monogamy
• Infant needs males
• Pair bonding / monogamy
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Problems: humans as primates
• Monogamy = sex is rare
• Human ovulation is advertized
• Different marriage patterns
• Modern male hunters and sharing
• Male v female choices
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Humans: a woman wants…
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Humans
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From bonobos and other primates:
• Sex for friendship, not monogamy
• Sex to reduce male aggression
• Male behavior to get female choice
• Power of allies
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For males: more than one way
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Humans vary
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Bushmeat & orphan trade
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Deforestation for agriculture both small and large scale
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Conservation Efforts:
• Initiated in 1991 (approx)• Area between Lomako and Yekekora• AWF and ICCN• Gazettement of Faunal Reserve of
Lomako-Yokokala (RFLY)• 3,625 sq km, 10 primate species• 3yrs funding - managed biodiversity
area
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Acknowledgements: colleagues, students, funding
sources
Boise FundBonobo Protection
FundConservation
InternationalL.S.B. Leakey
FoundationNational Science
Foundation BNS-8311252, SBR-9600547, BCS-0610233
North Carolina Zoological Society
University of Oregon: Vice President for Research
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