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Lecture 3

Lecture 3 BLUE FONT

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Department
Anthropology
Course Code
ANTB22H3
Professor
Joyce Parga

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Lecture 3 Jan.27.11
SLIDE DIETARY CATEGORIES:
Fruits
Leaves
Tree sap, gum
Animal prey (insects & vertebrates)
Insects
Varied diet
SLIDE PRIMATE DIETS & BODY SIZE:
Tend to be mostly insectivorous
Tend to be mostly folivorous
SLIDE MANY PRIMATES ARE MOSTLY FRUIGIVOROUS…:
Those that are small-to-medium sized also eat insects
Those that are medium-to-large sized also eat leaves
SLIDE MANY PRIMATES ARE MOSTLY FRUIGIVOROUS 2:
Kay’s threshold- 500 grams
oInsectivores tend to weigh less than this limit
oNo folivore is smaller than this weight (eg. howler monkey)
SLIDE PRIMATE FOODS:
Low in protein
Must travel farther to find it (means longer daily path lengths)
SLIDE PRIMATE FOODS 2:
Eating insects difficult to catch and they’re small!
Eating leaves (& shoots, buds) theyre a low-energy resource, so must eat a large
amount
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SLIDE ISSUES WITH FOLIVORY:
Secondary compounds (tannins, alkaloids) which give stomach aches, weird
stomach morphology
Gut microorganisms digest leaves for primates (animals that eat fruit dont have to
worry about this)
SLIDE GUT ADAPTATIONS:
Colobus, lepilemur, and macaca are leaf eaters
SLIDE DENTAL ADAPTATIONS:
Two on the left:
oFrugivore teeth:
Low, rounded cusps (helps to grind things)
Two on the right:
oFolivore teeth:
Sharp, shearing crests (cutting a paper with scissors)
SLIDE DENTAL ADAPTATIONS 2:
Papio:
oFruigivore teeth:
Large, broad
Alouatta:
oFolivore teeth:
Small, not as broad
SLIDE 2 FORMS OF COMPETITION:
Contest competition: when a resource can be monopolized (controlled) by a single
individual or group and can be fought over (eg. Fruit, and can also be used towards
sexual competition)
oHigh dominance status is a major benefit
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Description
Lecture 3 Jan.27.11 SLIDE DIETARY CATEGORIES: Fruits Leaves Tree sap, gum Animal prey (insects & vertebrates) Insects Varied diet SLIDE PRIMATE DIETS & BODY SIZE: Tend to be mostly insectivorous Tend to be mostly folivorous SLIDE MANY PRIMATES ARE MOSTLY FRUIGIVOROUS: Those that are small-to-medium sized also eat insects Those that are medium-to-large sized also eat leaves SLIDE MANY PRIMATES ARE MOSTLY FRUIGIVOROUS 2: Kays threshold- 500 grams o Insectivores tend to weigh less than this limit o No folivore is smaller than this weight (eg. howler monkey) SLIDE PRIMATE FOODS: Low in protein Must travel farther to find it (means longer daily path lengths) SLIDE PRIMATE FOODS 2: Eating insects difficult to catch and theyre small! Eating leaves (& shoots, bud s)theyre a low-energy resource, so must eat a large amount www.notesolution.com
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