不育胺对橘小实蝇的化学不育效果
The sterilizing effect of metepa on Bactrocera dorsalis (Hendel)
张小亚**
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DOI：10.7679/j.issn.2095-1353.2019.058
作者单位：（宜昌市柑桔科学研究所，宜昌 443000）
中文关键词：橘小实蝇；不育胺；不育影响；交配竞争力
英文关键词：Bactrocera dorsalis (Hendel); metepa; sterile effects; mating competitiveness
中文摘要：【目的】 为了解不育胺对橘小实蝇Bactrocera dorsalis（Hendel）的化学不育效果。【方法】 通过喂食橘小实蝇不同浓度不育胺食料，测定了其对橘小实蝇的卵量及孵化率的影响。【结果】 结果表明：喂食0.08%-0.3%不育胺食料的橘小实蝇成虫交配始见期和产卵始见期与正常对照相比推迟1-2 d，均为9-10日龄开始交配，11-12日龄开始产卵；橘小实蝇取食不同浓度不育胺食料后，卵量和孵化率随浓度增加而降低。当取食0.3%不育胺食料时，♀处理×♂处理未见产卵，♀正常×♂处理和♀处理×♂正常均见产卵但卵量与对照相比显著降低且卵不孵化。取食0.3%不育胺的橘小实蝇雄虫相对不育系数为0.48，表明其交配竞争能力与正常雄虫相当。【结论】 0.3%浓度的不育胺可作为橘小实蝇的化学不育剂。
英文摘要：[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.