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期 刊 ：植物保护学报 2008年

关键词：亚致死剂量；双氧威；虫酰肼；亚洲玉米螟；生长发育；

Keywords:sublethal concentration, fenoxycarb, tebufenozide, Ostrinia furnacalis, development,

摘 要 ：测定亚致死剂量昆虫生长调节剂双氧威和虫酰肼对亚洲玉米螟5龄幼虫发育历期、化蛹率、体重、脂质含量及血清中糖和蛋白含量的影响。结果表明:双氧威LC₃₀、LC₂₀、LC₁₀依次为22.23、14.75、4.37μg/mL,虫酰肼LC₃₀、LC₂₀、LC₁₀依次为48.20、37.11、21.73μg/mL。LC₃₀亚致死剂量双氧威处理可使5龄幼虫的发育历期延长至8.33±0.69天,而虫酰肼处理则使其缩短至5.49±0.66天。亚致死剂量双氧威和虫酰肼处理均使幼虫体重及化蛹率明显降低(P<0.01),其体内脂质含量和血清中糖和蛋白含量也低于对照组(P<0.01),同时5龄幼虫血清中储存蛋白的合成受到抑制。

Abstract:Developmental time, pupation rate, body weight, the contents of lipid and carbohydrate contents in hemolymph of 5^th instar larvae of Ostrinia furnacalis Guenée treated with sublethal concentration of fenoxycarb and tebufenozide were determined. The LC₃₀, LC₂₀ and LC₁₀ of fenoxycarb were 22.23, 14.75 and 4.37μg/mL, and those of tebufenozide were 48.20, 37.11 and 21.73μg/mL, respectively. The developmental time of 5^th instar larvae of O.furnacalis treated with LC₃₀ sublethal concentration of fenoxycarb extended to 8.33±0.69 days. For treatment with LC₃₀ sublethal concentration of tebufenozide, however, the developmental time shortened to 5.49±0.66 days. Body weight and pupation rate of 5^th instar larvae of O.furnacalis treated with LC₃₀ sublethal concentration of fenoxycarb and tebufenozide decreased significantly(P<0.01), and the contents of lipid, protein and carbohydrate in hemolymph were lower than those of control group(P<0.01). Meanwhile, the synthesis of storage protein in hemolymph was inhibited.

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