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Meal sharing among the Ye'kwana.

Raymond Hames1, Carl McCabe2

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Summary

This study introduces meal sharing as a method to quantify household food transfers, finding reciprocal altruism best explains exchange intensity and balance among the Ye'kwana people.

Keywords:
Evolutionary ecologyExchangeFood sharingMeal sharingReciprocal altruismYe’kwana (Venezuela)

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Area of Science:

  • Anthropology
  • Evolutionary Biology
  • Sociology

Background:

  • Traditional food sharing studies focus on resource flow between households.
  • Meal sharing quantifies food consumption acts and human movement during consumption.
  • Understanding the adaptiveness of food transfers is crucial before modeling recipients.

Purpose of the Study:

  • To evaluate evolutionary and non-evolutionary models of food transfers.
  • To introduce meal sharing as a novel quantification method for food exchange.
  • To analyze the factors influencing food transfer adaptiveness within the Ye'kwana community.

Main Methods:

  • Quantifying food transfers through meal sharing (host/guest dynamics).
  • Evaluating evolutionary models: kin selection, reciprocal altruism.
  • Assessing non-evolutionary models: egalitarian exchange, residential propinquity.
  • Developing a proportional balance measure for exchange analysis.

Main Results:

  • Economies of scale in food processing support meal sharing utility for the Ye'kwana.
  • Reciprocal altruism emerged as the strongest predictor of exchange intensity.
  • Proportional balance was developed as a modified measure of exchange balance.

Conclusions:

  • Meal sharing offers a nuanced approach to studying food transfers.
  • Reciprocal altruism is a key driver of food exchange dynamics in the Ye'kwana society.
  • Further research can explore the adaptiveness and evolutionary underpinnings of food sharing behaviors.