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Monkeys overharvest shellfish.

George H Perry1,2,3, Brian F Codding4,5

  • 1Department of Anthropology, Pennsylvania State University, University Park, United States.

Elife
|September 14, 2017
PubMed
Summary
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Macaque monkeys using stone tools are depleting coastal shellfish populations in Thailand. This primate behavior significantly impacts shellfish size and density, challenging previous assumptions about human-only overharvesting effects.

Area of Science:

  • Primate behavior
  • Marine ecology
  • Conservation science

Background:

  • Coastal shellfish populations are vital marine resources.
  • Overharvesting is a significant threat to marine ecosystems.
  • Primate foraging behaviors can impact local environments.

Purpose of the Study:

  • To investigate the impact of stone tool use by macaques on coastal shellfish.
  • To assess changes in shellfish size and population density attributed to macaque foraging.
  • To differentiate the effects of primate overharvesting from human activities.

Main Methods:

  • Field observations of macaque tool use.
  • Shellfish population surveys in foraging areas.
  • Comparative analysis of shellfish size and density.
Keywords:
Macaca fascicularisThailandecologyshellfishstone tool use

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Main Results:

  • Macaque stone tool use has led to reduced shellfish size.
  • Significant decrease in coastal shellfish population density observed.
  • Primate foraging is a notable factor in shellfish decline.

Conclusions:

  • Primate foraging behavior, specifically stone tool use, significantly impacts coastal shellfish.
  • Human overharvesting is not the sole driver of shellfish population decline.
  • Conservation strategies must consider non-human primate impacts on marine resources.