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首页> 外文期刊>African Journal of Biotechnology >Molt disruption and mortality of Locusta migratoria var. manilensis (Meyen) (Orthoptera: Acrididae) caused by insect growth regulators
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Molt disruption and mortality of Locusta migratoria var. manilensis (Meyen) (Orthoptera: Acrididae) caused by insect growth regulators

机译：东方蝗的蜕皮和死亡率。昆虫生长调节剂引起的马尼拉（Meyen）（直翅目：Ac科）

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摘要

The acute toxicity effects of topical applications of five insect growth regulators (IGRs) on the oriental migratory locust?Locusta migratoria?var.?manilensis?were assessed. Under laboratory conditions, at the highest tested dose rate of 300 ppm, the percent mortality?and molt inhibition after two weeks?for the five tested compounds were: flufenoxuron (97 and 83%), swallowwort alkaloids (48 and 85%), azadirachtin (100 and 93%), compound RH-5849 (45 and 22%), and pyriproxyfen (48 and 37%) respectively but low doses caused higher molt inhibition for compound RH-5849. These IGRs affected the timing of the subsequent molt, the average timing of the molt (of survivors) was delayed 0-2 days after treatments with flufenoxuron at dose rates between 18.75-300ppm, RH-5849 at dose rates between 150-300 ppm, but occurred 0-2 days early following treatment with azadirachtin, swallowwort alkaloids or pyriproxyfen at dose rates between 18.75-300ppm, and RH-5849 at dose rates between 37.5-75 ppm. Initial studies of the insecticidal effects of these insect growth regulators on?L. migratoria manilensis?show them to be very potent locust control agents.
机译：评估了五个昆虫生长调节剂（IGRs）局部施用对东方mi蝗Locusta migratoria？var。？manilensis？的急性毒性作用。在实验室条件下，在300 ppm的最高测试剂量率下，五种测试化合物的死亡率（百分数）和两周后的蜕皮抑制率为：氟苯氧隆（97和83％），燕子生物碱（48和85％），印za素（100％和93％），化合物RH-5849（45％和22％）和吡ip昔芬（48％和37％），但低剂量对化合物RH-5849的蜕皮抑制作用更高。这些IGR会影响后续蜕皮的时间，使用氟苯氧隆以18.75-300ppm的剂量率，RH-5849以150-300 ppm的剂量率处理后，（幸存者）蜕皮的平均时间会延迟0-2天，但发生在用印dir素，Swallowwort生物碱或吡吡氧芬治疗后0-2天，剂量率在18.75-300ppm之间，而RH-5849在剂量率37.5-75 ppm之间。这些昆虫生长调节剂对？L的杀虫作用的初步研究。 Manigensis证明它们是非常有效的蝗虫防治剂。

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