Title: COMPETITION BETWEEN <i>ORIUS TRISTICOLOR</i> (WHITE) (HEMIPTERA: ANTHOCORIDAE) AND <i>AMBLYSEIUS CUCUMERIS</i> (OUDEMANS) (ACARI: PHYTOSEIIDAE) FEEDING ON <i>FRANKLINIELLA OCCIDENTALIS</i> (PERGANDE) (THYSANOPTERA: THRIPIDAE)
Abstract: Abstract The competition between Orius tristicoior (White) and Amblyseius cucumeris (Oude-mans), both preying on western flower thrips, Frankliniella occidentaiis (Pergande), was assessed. On single leaves in smail cages, mortality of A . cucumeris due to O . tristicoior was inversely proportional to thrips density; thrips mortality due to O . tristicoior was unaffected by A . cucumeris density. The proportion of A . cucumeris in the prey eaten was consistently less than its proportion in the prey initially available, both when thrips density varied and when A . cucumeris density varied. These relationships held for both immature and adult thrips. These results suggest that O . tristicoior and A . cucumeris could be used simultaneously for biological control of western flower thrips in greenhouse vegetable crops.
Publication Year: 1992
Publication Date: 1992-12-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 44
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