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pubmed-article:15640082pubmed:abstractTextAllozyme electrophoresis was employed to compare the difference in mortality among the genotypes at two polymorphic loci of Pgm and Me of grasshopper Oxya chinensis individuals acutely exposed to 1.5g/L malathion which resulted in 56% mortality in 24 hours. The selective lethal effects were observed among the genotypes at Pgm locus but not at Me locus. It is noted that the genotype Pgm-ab experienced the highest mortality (80%), whereas Pgm-bb and Pgm-bc were 49%, lower than the average. The chi(2) tests showed significant difference in morality between Pgm-bb and Pgm-cc. After exposure the allele frequency of Pgm-b showed a notable increase among surviving individuals. The cluster analysis based on Roger's genetic distance indicated that the acute exposure to malathion can cause differentiation in genetic composition at population level in Oxya chinensis. Because malathion is commonly used as the insecticide for grasshopper control, the data obtained in this study suggest that the similar genotype-mortality effects may occur in crop fields.lld:pubmed
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pubmed-article:15640082pubmed:authorpubmed-author:LiCui-LanCLlld:pubmed
pubmed-article:15640082pubmed:authorpubmed-author:LuFu-PingFPlld:pubmed
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pubmed-article:15640082pubmed:dateRevised2008-11-21lld:pubmed
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pubmed-article:15640082pubmed:articleTitle[Impacts of malathion on population genetic structure of Oxya chinensis].lld:pubmed
pubmed-article:15640082pubmed:affiliationCollege of Life Science and Technology, Shanxi University, Taiyuan 030 006, China.lld:pubmed
pubmed-article:15640082pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:15640082pubmed:publicationTypeComparative Studylld:pubmed
pubmed-article:15640082pubmed:publicationTypeEnglish Abstractlld:pubmed
pubmed-article:15640082pubmed:publicationTypeResearch Support, Non-U.S. Gov'tlld:pubmed