取食转Bt+CpTI基因棉花的棉蚜对普通草蛉生长发育及繁殖力的影响

【目的】研究取食转Bt+CpTI基因棉花的棉蚜Aphis gossypii Glover对普通草蛉Chrysopa carnea Stephens生长发育及繁殖力的影响,为转Bt基因抗虫棉花的推广和应用提供理论支持。【方法】普通草蛉取食转Bt+CpTI棉花SKG321和对照品种石远321棉花上的棉蚜后,对普通草蛉生长发育情况进行研究,并对其幼虫、蛹的存活率和成虫的羽化率及产卵量进行分析。【结果】取食转Bt+CpTI棉花上的棉蚜对普通草蛉的各龄幼虫发育历期、蛹期和产卵前期无不利影响;处理与对照间各龄幼虫存活率、蛹的存活率和成虫羽化率之间没有显著差异;取食转Bt+CpTI棉花上棉蚜的普通草蛉单雌日产卵量与对照相比没有减少,而25 d内的单雌总产卵量与对照相比差异亦不显著。【结论】取食转Bt+CpTI棉花上的棉蚜对普通草蛉的生长发育及繁殖力无负面影响。     

外源保幼激素对中华通草蛉滞育解除及滞育后发育的影响

【目的】本研究旨在明确外源保幼激素(juvenile hormone, JH)在中华通草蛉Chrysoperla sinica滞育快速解除过程中的使用剂量及最佳使用时期。【方法】测定点滴不同剂量(0, 5, 15, 25和35 μg/成虫)外源JH后中华通草蛉滞育成虫的产卵前期、产卵历期、雌虫寿命及单雌产卵量,以及15 μg/成虫外源JH处理对不同日龄(0, 5, 10, 20, 30和40日龄)滞育成虫处理后这4个指标的变化。【结果】在不同点滴剂量处理中,15和25 μg/成虫外源JH处理的中华通草蛉滞育成虫的产卵前期分别为6.82和6.29 d,显著短于点滴丙酮的对照组(10.55 d),且15 μg/成虫外源JH处理组产卵历期、雌虫寿命及单雌产卵量均最大,均显著大于对照组。不同日龄的中华通草蛉滞育成虫点滴15 μg/成虫外源JH,0, 5, 10和20日龄处理的成虫产卵前期均显著短于未经外源JH处理的对照组。10, 20和30日龄处理的成虫产卵历期和雌虫寿命均与未经外源JH处理的对照组无显著差异,但10, 20和30日龄处理的成虫生殖力显著降低,而20日龄处理时对照组和外源JH处理组均有较高的生殖力。【结论】综合考虑产卵前期、产卵历期、产卵量和雌虫寿命4个指标,15 μg/成虫的外源JH剂量是中华通草蛉快速解除滞育的最佳剂量;最佳使用时期为滞育20 d的成虫,此时对中华通草蛉成虫滞育解除后的生殖能力影响最小。本研究解决了中华通草蛉滞育解除耗费时间长的瓶颈问题,为成虫滞育天敌的高效存储利用与滞育的快速解除提供了新思路。     

南方小花蝽液体人工饲料的饲养效果评价

为评价一种液体人工饲料的饲养效果,以棉蚜饲养南方小花蝽作对照,用液体人工饲料连续两代饲养南方小花蝽若虫和成虫,对南方小花蝽各生长阶段的生长和发育指标进行调查。结果显示：用人工饲料饲养的南方小花蝽若虫历期（22～23天）与对照组（21天）之间不存在显著差异,说明液体人工饲料可以很好的满足南方小花蝽若虫生长的营养要求。然而,用棉蚜饲养的对照组南方小花蝽成虫获得率可达到63%,而人工饲料组连续两代的成虫获得率分别仅为45% 和43%。取食人工饲料的南方小花蝽成虫,在产卵前期、产卵量及寿命方面与对照组都没有显著差异,仅在产卵期方面有着显著差异,人工饲料组小花蝽的产卵期为13～16天,而对照组小花蝽的产卵期可达20天,说明液体人工饲料也可以很好的满足南方小花蝽成虫生殖发育的营养要求。     

饲养草蛉的几种饲料

1.发面饲料 做馒头的发酵面头充分发透,以粘手为度,摊开、吹干,研细过筛。配方为: 发面干粉35克; 蜂蜜20毫升(或糖10克,蜂蜜10毫升); 水80毫升。 饲养中华草蛉成虫,产卵前期为3天,每雌平均产卵672—831粒,成虫寿命最长可达2个月。饲养叶色草蛉,大草蛉效果不理想。 2.酵母片饲料 配方:酵母片(医用)……25克;糖……10克;蜂蜜……10毫升;水……100毫升。 饲养中华草蛉成虫,在27℃恒温下,产卵前期4—     

松突圆蚧天敌红点唇瓢虫人工饲料的初步研究

对松突圆蚧主要天敌红点唇瓢虫人工饲料进行了初步研究。结果表明:以鲜猪肝、酵母粉、Vc粉末和蜂蜜(质量比为100∶10∶1∶20)为主要配方的人工饲料,基本满足红点唇瓢虫成虫的营养需要,前期存活率可达60%,但平均雌虫产卵量较低,仅为21.8粒/头。若混合适量的松突圆蚧进行饲养,则可以较好地延长成虫的寿命和产卵量,饲养75 d存活率仍达50%以上,平均产卵量达87.2粒.头-1,饲养效果较好。     

豆荚螟的人工饲养技术

【目的】豆荚螟Etiella zinckenella (Treitschke)是大豆上的一种重要害虫,为探索豆荚螟的人工饲养技术。【方法】本文研究了不同饲养器具对幼虫生长发育的影响、不同性比交配对生殖力的影响,以及不同产卵器具对成虫产卵量的影响。【结果】相比平底试管和12孔培养板,使用30 mL塑料量杯饲养幼虫存活率最高,5个龄期存活率均在93%以上,3种饲养器具幼虫历期差异不明显;不同性比值对成虫寿命和产卵孵化率的影响不明显,雌雄比为1︰2时产卵量最高;不同产卵器具对雌雄成虫寿命的影响不显著,分别约为14 d和11 d,且雌成虫只在豆荚上产卵,在其它3种器具上产卵量均为0。【结论】使用30mL塑料量杯饲养幼虫,成虫配对时保持雌雄比1︰2,提供豆荚供其产卵是目前探索出的最好的人工饲养方法。     

豆荚螟的人工饲养技术

【目的】豆荚螟Etiella zinckenella (Treitschke)是大豆上的一种重要害虫,为探索豆荚螟的人工饲养技术。【方法】本文研究了不同饲养器具对幼虫生长发育的影响、不同性比交配对生殖力的影响,以及不同产卵器具对成虫产卵量的影响。【结果】相比平底试管和12孔培养板,使用30 mL塑料量杯饲养幼虫存活率最高,5个龄期存活率均在93%以上,3种饲养器具幼虫历期差异不明显;不同性比值对成虫寿命和产卵孵化率的影响不明显,雌雄比为1︰2时产卵量最高;不同产卵器具对雌雄成虫寿命的影响不显著,分别约为14 d和11 d,且雌成虫只在豆荚上产卵,在其它3种器具上产卵量均为0。【结论】使用30mL塑料量杯饲养幼虫,成虫配对时保持雌雄比1︰2,提供豆荚供其产卵是目前探索出的最好的人工饲养方法。     

斑翅肩花蝽布丁人工饲料的饲养效果评价

斑翅肩花蝽 Tetraphleps galchanoides Ghauri是铁杉球蚜 Adelges tsugae (Annand) (hemlock woolly adelgid)的重要天敌。为开展斑翅肩花蝽的人工繁殖, 我们自主研制了一种主要成分为蛋白质、 脂肪、 碳水化合物的原料配制布丁人工饲料, 所配制人工饲料产率为74.5%, 含水率为8.6%, 感官评定得分为81.7分。为评价斑翅肩花蝽布丁人工饲料的饲养效果, 在实验室以铁杉球蚜作对照, 用布丁人工饲料饲养斑翅肩花蝽, 测定了斑翅肩花蝽若虫发育历期、 存活率及成虫繁殖力, 并调查了若虫和成虫林间捕食量。结果表明： 用布丁人工饲料饲养的斑翅肩花蝽若虫发育历期（103.2±6.5 d）与对照的若虫发育历期（105.7±8.4 d）不存在显著差异（P>0.05）; 用布丁人工饲料饲养的斑翅肩花蝽若虫存活率（73.2%）略低于对照的若虫存活率（77.4%）, 而且第1, 2和3代成虫获得率相近; 取食布丁人工饲料的斑翅肩花蝽成虫, 在产卵前期、 产卵期、 产卵量与对照组均无显著差异, 但孵化率、 成虫寿命存在显著差异, 取食布丁人工饲料的卵孵化率为85.8%, 成虫寿命为51.9±4.0 d, 而对照组的卵孵化率仅为71.4%, 成虫寿命仅为37.4±2.6 d。林间释放用布丁人工饲料饲养的斑翅肩花蝽, 若虫和成虫均有效捕食铁杉球蚜。因此, 此种布丁人工饲料可用于大量饲养繁殖斑翅肩花蝽, 满足大面积生物防治铁杉球蚜的需要。     

光周期和温度对大草蛉滞育解除及滞育后发育和繁殖的影响

【目的】大草蛉Chrysopa pallens(Rambur)是自然界重要的天敌昆虫,以预蛹兼性滞育越冬。本研究旨在明确光周期和温度对大草蛉滞育解除及滞育后发育和繁殖的影响。【方法】在室内观测了不同温度(22℃和25℃)和光周期(15L∶9D及9L∶15D)条件下大草蛉预蛹的滞育解除及滞育解除后的蛹期、蛹存活率、成虫鲜重、成虫寿命、产卵前期和单雌产卵量等生物学特性,以及5℃低温处理对预蛹滞育解除的作用,并分析了滞育持续时间对大草蛉滞育解除后发育和繁殖的影响。【结果】在光周期15L∶9D和9L∶15D下,25℃下大草蛉预蛹期(分别为50.09和49.47 d)显著短于22℃下(分别为80.80和82.20 d)。5℃低温处理极显著延长了大草蛉预蛹期(P0.01),且缩小了预蛹期的个体差异。22℃下,与非滞育预蛹相比,滞育后预蛹的存活率显著降低,蛹期和产卵前期显著延长,雌成虫寿命显著缩短,成虫鲜重和单雌产卵量显著下降。22℃,光周期15L∶9D下大草蛉的滞育持续时间为50~170 d,且能影响滞育后发育:随着滞育持续时间的延长,蛹期逐渐延长,雌、雄成虫的鲜重逐渐降低,雄成虫寿命呈先延长后缩短的趋势,蛹存活率、雌成虫寿命、产卵前期和单雌产卵量没有显著性差异。【结论】试验条件下,两种光周期对大草蛉滞育解除、滞育后发育和繁殖没有明显的影响,而温度是调节大草蛉滞育发育和繁殖的重要因子。较高温度能促进滞育的解除,低温处理能够同步种群的滞育发育。大草蛉的滞育存在生殖代价,滞育持续时间影响滞育解除后的部分生物学特性。     

转Bt基因抗虫棉对中华草蛉生物学特性的影响(英文)

为进一步揭示转Bt基因抗虫棉对中华草蛉Chrysopa sinica(Tjeder)生物学特性的影响,以泗棉3号和GK-12为材料,以棉蚜为猎物,研究了转基因抗虫棉对中华草蛉存活率、发育历期和繁殖力的影响。结果表明,转基因抗虫棉对中华草蛉幼虫期存活率、幼虫发育历期、蛹发育历期与对照差异均不显著;对成虫寿命、体重以及雌虫繁殖力也无显著差异。表明转Bt抗虫棉对中华草蛉的生物学特性影响较小。     

Are fecundity and longevity of female Aphelinus abdominalis affected by development in GNA‐dosed Macrosiphum euphorbiae?

Abstract. Snowdrop lectin ( Galanthus nivalis agglutinin, GNA) confers partial resistance to several aphid species when incorporated into an artificial diet and/or expressed in transgenic potato. First-tier laboratory-scale experiments were conducted to assess the potential effect of GNA on the longevity and fecundity of female parasitoid Aphelinus abdominalis (Dalman) that had developed in Macrosiphum euphorbiae (Thomas) fed artificial diet containing 0.1% GNA (w/v). In a previous study it was shown that GNA ingested by A. abdominalis larvae is not acutely toxic. It was also shown that GNA has a host-size mediated effect on parasitoid sex ratio and larval development, but no apparent direct effect.         In this study, we report that A. abdominalis larvae that developed in GNA-dosed aphids that were smaller than control aphids of the same age, produced smaller adults with a reduced longevity and fecundity. Aphelinus abdominalis larvae that developed in GNA-dosed aphids older than the control but of the same size, produced adults of similar size that lived as long as the control but had a reduced fecundity.         Our results suggest that GNA fed to aphids in artificial diet has both a host-mediated effect (via aphid-size) and a direct effect on adult parasitoid fecundity. It is not known how GNA affects parasitoid larval development and subsequently adult fecundity, but it is hypothesized that GNA acted as an antifeedant to parasitoid larvae, thus disturbing nutrient assimilation and conversion necessary for egg maturation.     

Biological and biochemical characteristics for quality control of Harmonia axyridis (Pallas) (Coleoptera, Coccinellidae) reared on a liver-based diet

Biological and biochemical parameters of a flightless strain of Harmonia axyridis, fed on a pork liver-based artificial diet and on Ephestia kuehniella eggs as controls, were compared. The diet-grown larvae showed a significantly longer developmental time and a lower adult emergence rate compared to control larvae. The weights of the newly emerged adults were significantly higher for adults fed E. kuehniella eggs during their larval stages than fed the artificial diet. In contrast, larval food source had no effect on the duration of the pre-oviposition period or adult longevity. For adults fed on E. kuehniella eggs as larvae, a significantly longer pre-oviposition period, lower daily weight gain and fecundity were found for the diet-fed females compared to those fed on E. kuehniella eggs throughout the life span. The adult food source had no significant effect on longevity and fertility. Lower amino acid and fatty acid contents (in particular C16:1 and C18:3n-3) were found for the prepupae and newly emerged females obtained from diet-reared larvae compared to controls. Deficiencies in fatty acids C16:1 and C18:3n-3 were also observed in females obtained from E. kuehniella egg-reared larvae and fed on diet from adult emergence. The analyses of the foods showed deficiencies in artificial diet, especially for some amino and fatty acids. The results suggest a non-optimal composition of the artificial diet and some possibilities for its improvement. However, this polyphagous predator could be reared from first instar larvae to fully reproductive adults on a pork liver-based artificial diet.     

食物对棉铃虫生长发育及繁殖的影响

用棉花、花生、玉米及人工饲料作为食料,模拟幼虫田间取食习性,同时为雌蛾设立补充和无补充营养两个处理,研究了食物对棉铃虫 Helicoverpa armigera (Hübner) 生长发育及繁殖的影响。4种食料组幼虫历期之间有显著差异;雌、雄蛹重花生组显著小于其余三组。雌蛾腹部干重及其脂肪百分含量与雌蛹体重的排列顺序一样,雌蛾腹部干重人工饲料组显著大于棉花组和花生组。雌蛾寿命和繁殖受幼虫食料和成虫食物的双重影响。喂10%蜂蜜时,雌蛾寿命、交配率和产卵量在四个幼虫食料组之间没有显著差异。但喂以清水时,花生组雌蛾均未交配,寿命和产卵量显著小于其余三组。从同种幼虫食料来看,除人工饲料组外,其余3组雌蛾喂清水时的产卵量和寿命均比喂10%蜂蜜溶液时的显著下降。基于这些结果,作者认为棉花、玉米比花生更适合于棉铃虫的生长发育和繁殖。在田间自然栽培状态下,不同食料植物的糖分含量对棉铃虫生长发育和繁殖影响较大,含氮量的变化影响小。     

Contribution of natural food sources to reproductive behaviour, fecundity and longevity of Ceratitis cosyra, C. fasciventris and C. capitata (Diptera: Tephritidae)

The influence of food sources comprising the natural diet on the reproductive behaviour, fecundity and longevity of three African fruit flies Ceratitis cosyra (Walker), C. fasciventris (Bezzi) and C. capitata (Wiedemann) was investigated. Three natural food sources, varying in protein and sugar content, were evaluated. These included bird droppings (farm chicken), aphid honeydew and guava (Psidium guajava L.) juice. For C. fasciventris and C. capitata, flies fed on a protein-rich diet displayed higher frequency of calling, mating and oviposition than flies fed on a protein-poor diet, whilst for C. cosyra, quality of diet significantly influenced the mating behaviour of the flies, but not the calling and oviposition behaviour. Net fecundity rates were lowest for C. fasciventris and C. capitata when fed only on guava juice (0.1, 2.6 eggs per female, respectively), and higher for those on a diet of honeydew only (9.5, 33.8 eggs per female, respectively) and a combined diet of guava, honeydew and chicken faeces (11.8, 25.8 eggs per female, respectively). For C. cosyra, due to low numbers of eggs collected, no significant differences in fecundity between diets could be detected. All species fed only on a diet of chicken faeces since emergence died within the first three days of adult life without laying eggs, but when carbohydrates were provided by addition of guava juice and honeydew, the longevity of the flies was sustained for more than four weeks after adult emergence. The practical implications of these findings for control purposes are discussed.     

人工饲料中添加脂类和昆虫保幼激素类似物对七星瓢虫取食和生殖的影响

本文定量测定在人工饲料中加入埴物油和ZR512对七星瓢虫成虫(第一代)的生殖、摄食、生长、食物利用和转化的影响。结果表明:成虫取食加0.1%橄榄油和ZR512的人工饲料时产卵率能达到96.7%产卵前期为8天左右。如果在此基础上分别添加1%的玉米油或豆油时能促进雌虫产卵量的进一步增加,成虫的增重百分率随着生长天数增加持续上升,取食这种人工饲养的成虫除产卵量外,在体重、产卵前期、产卵率三方面都达到或接近取食蚜虫时的水平。 人工饲料中加入橄揽油能刺激成虫的取食,在此基础上加入玉米油或豆油能使食物转化效率显著地提高。人工饲料中加入ZR512时能阻止或打破雌虫的生殖滞育,促进生殖活动。     

人工饲料对龟纹瓢虫生长和繁殖的影响

龟纹瓢虫Propylaea japonica(Thunberg)能捕食多种农业害虫,并且具有食量大、产卵多、适应性强、年发生代数多等特点,是我国农业生产中一种重要的捕食性天敌昆虫。对龟纹瓢虫人工饲料的研究则是实现其规模化饲养的关键。作者研究不同饲料对龟纹瓢虫生长和繁殖的影响,结果表明:添加橄榄油后幼虫发育历期明显增长,添加0.3%的橄榄油能显著提高幼虫的成活率;在成虫体重增长上,雌雄虫均表现为在刚羽化后几天内体重增长显著,随后增长变缓;并且添加蔗糖能显著提高雌虫的体重增长率而对雄虫作用不显著;对雌虫繁殖性能的研究发现,蚜虫喂养组有明显的持续时间较长的产卵高峰期,而人工饲料的产卵高峰期持续时间较短,并且出现时间较晚或分为2个高峰期;添加0.3%的橄榄油能显著缩短龟纹瓢虫的产卵前期,几乎达到蚜虫喂养组的水平;而添加蔗糖在一定程度也能缩短产卵前期,同时还能显著提高龟纹瓢虫的产卵量。     

Mass rearing of the pink corn borer, Sesamia cretica Led. (Lepidoptera: Noctuidae) larvae, on semi artificial diets

The effect of two different semi-artificial diets (S.A.D1 and S.A.D2) as well as a natural corn diet on the biology and bionomics of the pink stem borer, Sesamia cretica was studied under laboratory conditions. The insect was successfully mass reared for ten successive generations at the conditions of 27 +/- 2 C degrees and 60-80% R.H. In addition, a photoperiod of 0:24 (L:D) for larvae and 12:12 (L:D) in concern to the other stages, respectively. ALong the ten successive generations, there were no significant differences between the larval periods for both the artificial diets. The S.A.D2 induced the shortest (24.0 days) larval period compared with the natural diet (27.5 days) and S.A.D1 (31.5 days). Rearing larvae on the natural diets revealed a pupal period of 11.0 days, while it was 10.0 days and 8.5 days for the artificial diets (S.A.D1) and in (S.A.D2), in respect. Moth longevity (pre-oviposition, oviposition and post-oviposition periods), to a certain extent, was affected by the larval diets. The maximal moth longevity (13.0 days) was observed for larva reared on corn plants (4, 8 and 1 days). On the other hand, the shortest period (10.5 days) of moth longevity was noticed in SAD2 (1, 9 and 0.5 days). S.A.D1 showed 11.0 days moth longevity (3,7 and 1 days). The longest oviposition period (9.0 days) was recorded in the artificial diet S.A.D2, while it was only 7.0 days in the artificial diet S.A.D1 compared with 8.0 days in case of the natural diet. The number of deposited eggs increased with the progress of the 10 successive generations (G1:G10) from 150 to 265 and from 384 eggs to 564 eggs / female for the S.A.D1 and S.A.D2, in sequence. The highest mean number of deposited eggs per female (564) was for the derived females from larvae fed on the artificial diet in G10 of S.A.D2. The rate of the deposited eggs in S.A.D2 was gradually increased (from 9.70 to 61.14% increase) more than those reared on the natural diet throughout the ten generations. The highest significant percent hatchability (92.69%) has been resulted from the artificial diet SAD2. But, it has been decreased to 85.59% in the artificial diet S.A.D1 in comparison to 65.71% in the natural diet. In addition, the significant shortest total generation period was 44.0 days resulted from the artificial diet S.A.D2, while it was 53.5 and 54.0 days for corn plants and the artificial diet S.A.D1, consequently. In short, results indicated that the S.A.D2 could be considered as a suitable artificial diet for a feasible mass rearing of the pink corn borer, Sesamia cretica led. The S.A.D2 showed the shortest larval, pupal and life span for the generation periods. Moreover, it induced the longest oviposition period and the highest mean number of deposited eggs per female and the highest significant percent of eggs hatchability/fertility. The utilization of this artificial diet (S.A.D2) would supply the researchers with high-quality insects in adequate numbers, at specified times and specific stages of development for the bioassay, toxicological and biological studies.     

Argyrotaenia sphaleropa (Meyrick) (Lepidoptera: Tortricidae) in citrus in the State of Paraná, Brazil

Argyrotaenia sphaleropa (Meyrick) is associated with various fruit species in South America. This tortricid was first detected in citrus, Citrus sinensis (L.) Osbeck, in Brazil, in commercial groves in northern Paraná, during the 1994/95-crop season. The aim of this work was to study the biology of this lepidopteran under laboratory conditions (28 +/- 2 degrees C, 70 +/-10% UR, 14h photofase) using the citrus cultivar Pêra. Larvae obtained from egg masses collected in a commercial citrus grove in Rolandia, PR, were individually placed on citrus terminal leaves inside glass shell vials (8.5 x 2.5 cm) until adulthood. A male and a female moth were then transferred to acrylic cages (13 x 10 cm) containing inside a bouquet made with new citrus flush to serve as oviposition substrate. Adults were fed daily with a 10% honey solution. The biological parameters evaluated were duration of development of egg, larval and pupal stages; pupae weight; duration of pre-oviposition and oviposition periods, fecundity and longevity. The length of the egg to adult stage was around 36 days. The pre-oviposition period was almost two days, the oviposition period approximately ten days and the embryonary period around six days. Adult longevity was almost 15 days for females and nine days for males, and the lifetime fecundity was slightly over 180 eggs.     

苦瓜素Ⅰ对亚洲玉米螟的生物活性及对其幼虫体内代谢酶活性的影响

【目的】为研究苦瓜素Ⅰ对亚洲玉米螟 Ostrinina furnacalis (Güenée)的生物活性和体内相关酶活性的影响。【方法】采用饲料混药法测定了苦瓜素Ⅰ对亚洲玉米螟生长发育和繁殖的影响,并以生命表的方法评价了苦瓜素Ⅰ对亚洲玉米螟实验种群增长的控制作用;采用酶标仪测定了苦瓜素Ⅰ对亚洲玉米螟幼虫海藻糖酶和磷酸酯酶活性的影响。【结果】用含0.25, 0.5, 1.0, 2.0和4.0 mg/g浓度苦瓜素Ⅰ的人工饲料饲喂亚洲玉米螟3龄幼虫3 d,幼虫的存活率明显降低, LC₅₀为3.2 mg/g;对幼虫体重增长的抑制作用显著,在4.0 mg/g浓度下,第1, 2和3 天体重增长的抑制率分别为76.87%, 78.24%和79.94%,且发育历期明显延长;苦瓜素Ⅰ各浓度处理组中亚洲玉米螟蛹的历期和成虫寿命与对照相比差异不显著,但苦瓜素Ⅰ明显降低了亚洲玉米螟雌成虫的产卵量,4.0 mg/g浓度下,产卵抑制率高达73.55%。苦瓜素Ⅰ对亚洲玉米螟幼虫海藻糖酶、酸性磷酸酯酶和碱性磷酸酯酶活性均有明显的抑制作用,处理24, 48和72 h后,对亚洲玉米螟幼虫海藻糖酶活性的IC₅₀分别为3.8, 2.9和4.9 mg/g;对酸性磷酸酯酶活性的IC₅₀分别为3.1, 2.6和1.5 mg/g,对碱性磷酸酯酶活性的IC₅₀分别为3.3 ,1.9和3.6 mg/g。【结论】苦瓜素Ⅰ能显著抑制亚洲玉米螟幼虫的生长发育及成虫的生殖力,使其实验种群的增长受到明显控制。苦瓜素Ⅰ抑制亚洲玉米螟幼虫体内海藻糖酶和磷酸酯酶活性是其作用机制之一。