Laboratory and field investigation on the orientation of Frankliniella occidentalis (Thysanoptera: Thripidae) to more suitable host plants driven b…
Authors of this article are:
Cao Y Li C Yang H Li J Li S Wang Y Gao Y.
A summary of the article is shown below:
BACKGROUND: Differences in population densities among different plant species suggest a preference of F. occidentalis for particular hosts. Host plant volatiles are often involved in the fitness of insects. However, few studies have explored the interaction between flower volatiles and fitness. The host fitness of F. occidentalis for different flowers was assessed through field investigation, and its olfactory preference for flower volatiles was tested in the laboratory.RESULTS: In field investigation, 18 flower host plants were classified at four fitness levels by F. occidentalis. Olfactory tests showed that female F. occidentalis had significantly different preferences for different plant odours, whereas male F. occidentalis did not, among the volatiles of four tested flowers (each representing the four fitness levels). The relative response of F. occidentalis females to the flower volatiles (Rosa rugosa > Dianthus caryophyllus > Gerbera jamesonii > Pelargonium hortorum) was consistent with the field performance of F. occidentalis. In total, 23, 29, 16 and 26 components were identified in the volatile profiles of R. rugosa, D. caryophyllus, G. jamesonii, and P. hortorum, respectively. 3,5-Dimethoxytoluene (24.94%), nonanal (30.42%), (E)-3-penten-2-one (52.31%), and zingiberene (29.88%) were the single most abundant components of the volatiles of R. rugosa, D. caryophyllus, G. jamesonii, and P. hortorum, respectively.CONCLUSION: Volatiles are important in attracting F. occidentalis to suitable hosts, and differences in the types and concentrations of volatile components among flowers may directly influence the olfactory responses and field performance of thrips. Potential attractants could be developed for integrated pest management programs against this pest. This article is protected by copyright. All rights reserved.This article is protected by copyright. All rights reserved.
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This article is a good source of information and a good way to become familiar with topics such as: Frankliniella occidentalis;GC-MS;field investigation;flower host;host fitness;olfactory responses.
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