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Spirotetramat reduces fitness of the spotted-wing Drosophila,Drosophila suzukii

Insect Science 2024年第4期31卷 1222-1230页

作者： Jing Yang justin.flaven-pouchon Yiwen Wang Bernard Moussian Section of Animal Genetics Interfaculty Institute of Cell BiologyUniversity of TübingenTübingenGermany School of Pharmaceutical Science and Technology Tianjin UniversityTianjinChina INRAE CNRSUniversitéCôte d'AzurInstitut Sophia AgrobiotechSophia AntipolisFrance

With climate change,the spotted-wing Drosophila(SWD,Drosophila suzukii)invades a great number of fruit production regions worldwide.A plethora of insecticides are being applied for management of this *** expected,SWD develops resistance against some potent insecticides or is rather insensitive to some ***,there is an urgent need to identify and characterize alternative insecticides to control SWD ***,we have studied the effects of the orally applied inhibitor of the fatty acid synthesis pathway spirotetramat on SWD fitness with respect to fecundity and surface barrier function at different *** our experiments,we applied spirotetramat mixed with baker's yeast and showed that females and males were not repelled by effective concentrations of this *** found that spirotetramat,by trend,lowers egg numbers laid by fed *** eggs rapidly desiccate,and only a few larvae *** is lethal to larvae and reduces survival of adult flies under low-humidity *** together,based on our data,we propose to use yeast supplemented with spirotetramat and additional SWD-specific attractants in traps in non-crop areas in order to eradicate SWD populations before they infest crop production sites.

关键词： desiccation Drosophila suzuki insecticide lipids

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Chitinase 6 is required for procuticle thickening and organ shape in Drosophila wing

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Insect Science 2023年第2期30卷 268-278页

作者： Wei Dong justin.flaven-pouchon Ying-Hao Gao Chen-Yang Song Abeer El Wakil Jian-Zhen Zhang Bernard Moussian Institute of Applied Biology Shanxi UniversityTaiyuanChina Interfaculty Institute of Cell Biology University of TübingenTübingenGermany College of Life Science Shanxi UniversityTaiyuanChina Faculty of Education Department of Biological and Geological SciencesAlexandria UniversityAlexandriaEgypt INRAE CNRSUniversitéCote d’AzurInstitut Sophia AgrobiotechSophia AntipolisFrance

The polysaccharide chitin is a major scaffolding molecule in the insect *** order to be functional,both chitin amounts and chitin organization have been shown to be important *** great advances in the past decade,the molecular mechanisms of chitin synthesis and organization are not fully ***,we have characterized the function of the Chitinase 6(Cht6)in the formation of the wing,which is a simple flat cuticle organ,in the fruit fly Drosophila *** of Cht6 function by RNA interference during wing development does not affect chitin organization,but entails a thinner cuticle suggesting reduced chitin *** phenotype is opposed to the one reported recently to be caused by reduction of Cht10 *** as a consequence,cuticle permeability to xenobiotics is enhanced in Cht6-less *** also observed massive deformation of these *** addition,the shape of the abdomen is markedly changed upon abdominal suppression of ***,we found that suppression of Cht6 transcript levels influences the expression of genes coding for enzymes of the chitin biosynthesis *** finding indicates that wing epidermal cells respond to activity changes of Cht6 probably trying to adjust chitin ***,in a working model,we propose that Cht6-introduced modifications of chitin are needed for chitin synthesis to proceed *** thickness,according to our hypothesis,is in turn required for correct organ or body part *** molecular mechanisms of this processes shall be characterized in the future.

关键词： abdomen chitin Cht6 Drosophila melanogaster procuticle wing

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