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Effectiveness of the botanical insecticide azadirachtin against Tirathaba rufivena (Lepidoptera: Pyralidae)

文献类型: 外文期刊

作者: Zhong, Baozhu 1 ; Lv, Chaojun 1 ; Qin, Weiquan 1 ;

作者机构: 1.Chinese Acad Trop Agr Sci, Coconut Res Inst, Wenchang 571339, Hainan, Peoples R China

关键词: areca palm;neem;activity;toxicity;development

期刊名称:FLORIDA ENTOMOLOGIST ( 影响因子:1.425; 五年影响因子:1.595 )

ISSN: 0015-4040

年卷期: 2017 年 100 卷 2 期

页码:

收录情况: SCI

摘要: Tirathaba rufivena Walker (Lepidoptera: Pyralidae) is an important pest of areca palm, Areca catechu L. (Arecaceae), in China. The effects of azadirachtin on the development and mortality of T. rufivena were determined. All larval instars were susceptible to azadirachtin, but the stomach and contact toxicities diminished as the larvae matured. The LC 25 and LC 50 dosages had no effect on larval hatch when applied directly to the eggs on different days after deposition, but the LC 90 treatment retarded hatch from eggs treated 1 to 3 d after deposition. The tested concentrations significantly affected the survival of neonate larvae from treated eggs, especially larvae that emerged from eggs treated 3 d after deposition. Azadirachtin also prolonged larval development and duration of the pupal stage. The percentage of adult emergence decreased, and longevity of the emerged adults was shortened, following treatment. Also, egg production and viability from females treated as larvae with azadirachtin were significantly affected.

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