Influence of a short exposure to teflubenzuron residues on the predation of thrips by Iphiseius degenerans (Acari: Phytoseiidae) and Orius laevigatus (Hemiptera: Anthocoridae) |
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Authors: | Scott Brown Alison S Simmonds Monique S J Blaney Wally M |
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Affiliation: | Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AB, UK. |
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Abstract: | A short duration (24h) leaf-disc bioassay was used to determine the effects of teflubenzuron residues on the predation levels of two predators, Iphiseius degenerans (Berlese) and Orius laevigatus (Fieber), foraging on nymphs of two species of thrips, Frankliniella occidentalis (Pergande) and Heliothrips haemorrhoidalis (Bouche), on a range of different species of plant. Teflubenzuron did cause thrips mortality during the 24-h bioassay; it was more active against H haemorrhoidalis than F occidentalis. Teflubenzuron did not cause significant mortality to either species of predator, although on some plants the effectiveness of both predators was reduced in the presence of teflubenzuron. |
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Keywords: | Iphiseius degenerans Orius laevigatus Frankliniella occidentalis Heliothrips haemorrhoidalis host plants teflubenzuron |
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