Changes in Methamidophos Resistance and Fitness of Hybrids in Different Strains of Nilaparvata lugens
Author(s): LIU Ze-wen, HAN Zhao-Jun, ZHANG Ling-chun
Pages: 309-312
Year: 2004 Issue: 3
Journal: RICE SCIENCE
Keyword: Nilaparvata lugens; hybridism; insecticide resistance; fitness;
Abstract: A resistant strain selected successively in the laboratory for 17 generations had 198.63-fold resistance to methamidophos.The resistant levels and fitness of progenies from the resistant strain and susceptible strain or field population were closer to those of the resistant strain than those of the susceptible strain or field population. The changes in the resistant levels of the hybrid were propitious to the resistance development, however, the changes of the fitness went to the contrary. The effects of the migration on the development of methamidophos resistance in Nilaparvata lugens were discussed in the aspects of the migration of Nilaparvata lugens,the resistant levels of progenies and the changes of the fitness.
Pages: 309-312
Year: 2004 Issue: 3
Journal: RICE SCIENCE
Keyword: Nilaparvata lugens; hybridism; insecticide resistance; fitness;
Abstract: A resistant strain selected successively in the laboratory for 17 generations had 198.63-fold resistance to methamidophos.The resistant levels and fitness of progenies from the resistant strain and susceptible strain or field population were closer to those of the resistant strain than those of the susceptible strain or field population. The changes in the resistant levels of the hybrid were propitious to the resistance development, however, the changes of the fitness went to the contrary. The effects of the migration on the development of methamidophos resistance in Nilaparvata lugens were discussed in the aspects of the migration of Nilaparvata lugens,the resistant levels of progenies and the changes of the fitness.
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