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Natural Enemies

  1. Paul Jepson1,
  2. Gavin B. Lewis2

Published Online: 15 APR 2003

DOI: 10.1002/047126363X.agr169

Encyclopedia of Agrochemicals

Encyclopedia of Agrochemicals

How to Cite

Jepson, P. and Lewis, G. B. 2003. Natural Enemies. Encyclopedia of Agrochemicals. .

Author Information

  1. 1

    Oregon State University, Corvallis, Oregon

  2. 2

    JSC International Ltd., Harrogate, North Yorkshire, United Kingdom

Publication History

  1. Published Online: 15 APR 2003


Terrestrial nontarget arthropods make a vital contribution to agroecosystems. Their functional roles include pollination of crop and noncrop plants, regulatory interactions maintaining pest species below economically damaging thresholds, contributing to the nutrient recycling process, and providing food to species higher up the food chain. Of particular interest in terms of assessing the risk of agrochemicals to the environment is the species group known as arthropod natural enemies. These are predators and parasitoids, which prey on other arthropods, thereby helping to limit the population increase of predominantly phytophagus species.


  • arthropods;
  • natural enemies;
  • agroecosystem;
  • agrochemicals;
  • parasitoids;
  • predators;
  • phytophagus species;
  • ESCORT 1;
  • ESCORT 2