Oral toxicity of Photorhabdus toxins against thrips species |
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Authors: | Gerritsen Lonne J M Georgieva Jana Wiegers Gerrie L |
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Institution: | Plant Research International, P.O. Box 16, 6700AA Wageningen, The Netherlands. lonne.gerritsen@wur.nl |
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Abstract: | The oral toxicity of excretion products of several Photorhabdus and Xenorhabdus strains was tested on two thrips species: Frankliniella occidentalis and Thrips tabaci. Out of 46 Photorhabdus isolates and six Xenorhabdus isolates only six North American P. temperata isolates were toxic to the thrips species. After 7 days of drinking from P. temperata supernatant a mortality of 90% could be reached. Thrips were also killed after sucking from leaves covered with the toxins. Toxins have a negative effect on thrips fecundity. Possibilities of using P. temperata in the control of thrips will be discussed. |
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Keywords: | Photorhabdus temperata Xenorhabdus Frankliniella occidentalis Thrips tabaci Entomopathogenic toxins Biological control of insects |
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