Can exotic phytoseiids be considered 'benevolent invaders' in perennial cropping systems?

Eric Palevsky*, Uri Gerson, Zhi Qiang Zhang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

Numerous natural enemies were adopted worldwide for the control of major pests, including exotic phytoseiid species (Acari: Mesostigmata: Phytoseiidae) that had been moved from continent to continent in protected and perennial agricultural systems. However, relatively fewer successes were recorded in perennial agricultural systems. In this manuscript we focus on the question: Can and will exotic phytoseiids provide better pest control than indigenous species in perennial agricultural systems? To answer this question, we review the efficacy of biological control efforts with phytoseiids in several case studies, where exotic and indigenous species were used against pests on indigenous host plants and some crops that were historically or recently introduced. Related factors affecting predator establishment, such as intraguild predation and pesticide effects are discussed, as well as the potential negative effects of exotic species releases on biological control and their impact on the indigenous natural fauna. On citrus, apple, grape and cassava exotic phytoseiids have enhanced biological control without negatively affecting indigenous species of natural enemies, except for the case of Euseius stipulatus (Athias-Henriot) on citrus that displaced Euseius hibisci (Chant) in a limited region of coastal California, USA, the latter considered to be an inferior biocontrol agent of Panonychus citri Koch. Phytoseiulus persimilis Athias-Henriot on gorse, an invasive weed, is perhaps the only recorded case of a negative effect of an established exotic phytoseiid on biological control.

Original languageEnglish
Pages (from-to)11-26
Number of pages16
JournalExperimental and Applied Acarology
Volume59
Issue number1-2
DOIs
StatePublished - Feb 2013

Keywords

  • Augmentative biological control
  • Avocado
  • Biological control
  • Cassava green mite
  • Citrus
  • Classical biological control
  • Gorse
  • Intraguild predation
  • Invasive species
  • Persea mite
  • Phytoseiidae

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