U of M ANTH 1001 - Lecture 15 10-31-17 Human foragers (15 pages)

Previewing pages 1, 2, 3, 4, 5 of 15 page document View the full content.
View Full Document

Lecture 15 10-31-17 Human foragers



Previewing pages 1, 2, 3, 4, 5 of actual document.

View the full content.
View Full Document
View Full Document

Lecture 15 10-31-17 Human foragers

136 views


Pages:
15
School:
University of Minnesota- Twin Cities
Course:
Anth 1001 - Human Evolution
Human Evolution Documents
Unformatted text preview:

11 1 2017 10 31 17 Humans as just another primate species Hunter Gatherers 1 Topics for Today Understanding the life of a hunter gatherer as a human vs as a chimpanzee Central place foraging Reciprocal altruism Human mate choices panhuman universals vs cultural specifics Diversity among human mating systems The human pair bond 2 1 11 1 2017 Why study Human Hunter Gatherers What are the selective constraints acting on humans living as hunter gatherers What makes humans unique as primates compared to other hunter gatherers 3 Hunting and gathering or Foraging Living off of wild resources Until 10 000 years ago how all people lived Until 5 000 years ago how 90 of people lived Today how very few people live and they are in the most marginal environments Homo sapiens show up 200 000 years ago 4 2 11 1 2017 Contemporary Forager Groups Ache and other groups Rain forests South America Agta Philippines Inuit Arctic areas Australian aborigines Western Desert Hadza Savanna woodlands Tanzania Efe Pygmy foragers and Lese Village horticulturists Ituri Forest Congo Bushmen Ju hoansi Kung Basarwa San Kalahari Arid Lands southern Africa 5 Ju Hoansi of the Kalahari Namibia Botswana South Africa 6 3 11 1 2017 Mobility 1 Residential mobility over very large yearly home range 2 Central place foraging each day with delayed consumption innovation of logistic mobility 3 Fission Fusion of nuclear families based on seasonality of food water not like Pan s daily fission fusion 7 Kalahari in dry season foragers clump around permanent waterholes n ore 8 4 11 1 2017 Sexual Division of Labor Sharing food 9 Mongongo nuts the staple of the diet 10 5 11 1 2017 Women Gather Plant Foods high diversity and quality over 100 species of plants compared to low quality of agricultural diets but high quantity 11 Foraging with Children you must carry the child as well as the food 12 6 11 1 2017 13 14 7 11 1 2017 Hunting for Meat Men hunt More protein higher calories than plants BUT less reliable due to low density of this scarce resource Must share hunting success or die 15 Foragers rarely experience mass starvation events but there is daily uncertainty in the food supply No long term storage of surplus means little ability to use surpluses for social favors Therefore no specialization of skill sets 16 8 11 1 2017 If no investment in things you invest in PEOPLE Hxaro Exchange System 17 Being Social Minnesota Nice and Altruism Nice is Nice the Group Selection Argument Wynne Edwards Nice is often Nepotism the Kin Selection argument Hamilton I ll be nice to you if you are nice to Me the Reciprocal Altruism argument Robert Trivers 18 9 11 1 2017 Conditions for Reciprocal Altruism Dracula was a nice guy Reciprocal Altruism in Vampire Bats 1 2 3 the opportunity to interact often better in longer lived organisms with low dispersal rate the ability to keep track of support given and received to recognize each other the ability to provide support only to those who help them to deny cheaters 19 19 Conditions for Reciprocal Altruism Tit for tat Game Theory The Prisoner s Dilemma 20 10 11 1 2017 Living Chimps TIME Modern Humans Last Common Ancestor LCA 21 Living Chimps TIME Industrial Agricultural Foraging Humans Last Common Ancestor LCA 22 11 11 1 2017 Human Mate Preferences 23 Human Mate Preferences Cultural influences on mate choice Chastity varies cross culturally Good financial prospect shows cross cultural uniformity 24 12 11 1 2017 Evolved Behaviors Inbreeding Avoidance Human universals Inbreeding avoidance Psychological mechanism Edward Westermarck effect Adults not attracted to those they grew up with 25 Evolved Behaviors Inbreeding Avoidance Minor marriages in parts of China 26 13 11 1 2017 Social Consequences of Mate Preferences Nyinba Himalayas Fraternal polyandry More likely to dissolves if More than three husbands Youngest brother younger than the wife 27 28 14 11 1 2017 Text 20583 plus your answer to 14352154567 ALA 9 What type of mating system do chimpanzees practice a Monogamy b Polygyny c Polygynandry d Polyandry e None of the above 29 Text 20584 plus your answer to 14352154567 ALA 10 What type of mating system do gorillas practice a Monogamy b Polygyny c Polygynandry d Polyandry e None of the above 30 15


View Full Document

Access the best Study Guides, Lecture Notes and Practice Exams

Loading Unlocking...
Login

Join to view Lecture 15 10-31-17 Human foragers and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view Lecture 15 10-31-17 Human foragers and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?