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Your Position :Home->Past Journals Catalog->2019年56 No.3

The sterilizing effect of metepa on Bactrocera dorsalis (Hendel)
Author of the article:ZHANG Xiao-Ya**
Author's Workplace:(Yichang Research Institute of Citrus Science, Yichang 443000, China)
Key Words:Bactrocera dorsalis (Hendel); metepa; sterile effects; mating competitiveness
Abstract:[Objectives]  To assess the sterilizing effect of metepa on Bactrocera dorsalis. [Methods]  B. dorsalis were fed an artificial diet containing 0.08-0.3% metepa, and the effects of these different concentrations of metepa on egg production and hatching rate were recorded and compared. [Results]  Feeding adults different concentrations of metepa delayed mating and oviposition by 1 to 2 days compared to the control group. All adults began mating at 9-10 days of age and began laying at 11-12 days of age. The number of eggs laid and the hatching rate decreased with increasing concentrations of metepa in the diet. A mixed group of females and males fed a diet containing 0.3% metepa failed to produce eggs. Sexually segregated females fed the same diet produced significantly fewer eggs than the control group and their eggs failed to hatch. The Relative Sterility Index (RST) of males fed a diet containing 0.3% metepa was 0.48, and metepa seemed to have no effect on male mating competitiveness. [Conclusion]  A 0.3% concentration of metepa added to an artificial diet acts as a chemosterilant for B. dorsalis.
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