Behavioral and Developmental Responses of Habrobracon hebetor (Hymenoptera: Braconidae) to Larvae of Helicoverpa armigera (Lepidoptera: Noctuidae) Inoculated With Various Concentrations of Bacillus thuringiensis var. kurstaki (Bacillales: Bacillacae)
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چکیده
منابع مشابه
Adaptation of Habrobracon hebetor (Hymenoptera: Braconidae) to Rearing on Ephestia kuehniella (Lepidoptera: Pyralidae) and Helicoverpa armigera (Lepidoptera: Noctuidae)
Food characteristics strongly regulate digestive enzymatic activity of insects through direct influences on their midgut mechanisms. Insect performance is better on diets that contain nutrients in proportions that fit its digestive enzymes. Little is known about the influences of rearing history on parasitism success of Habrobracon hebetor Say. This research focused on the effect of nutrient re...
متن کاملToxicity of some biorational and conventional insecticides to cotton bollworm, Helicoverpa armigera (Lepidoptera: Noctuidae) and its ectoparasitoid, Habrobracon hebetor (Hymenoptera: Braconidae)
پژوهشگران مختلف، تنظیم‌کننده‌های رشد حشرات و اسپاینوزین‌ها را، که به ترتیب از نظر فیزیولوژیکی و اکولوژیکی انتخابی می‌باشند، به عنوان جایگزین یا مکمل حشره‌کش‌های قدیمی‌تر غیرانتخابی مورد بررسی قرار داده‌اند. اثرات دایفلوبنزوران، هگزافلوموران، پروفنوفوس، اسپاینوسد و تیودیکارب روی لاروهای سن اول کرم قوزه‌ی پنبهHelicoverpa armigera (Hübner) به روش‌های اختلاط با غذای مصنوعی و دیسک برگی مورد بررسی قر...
متن کاملInteraction of Bacillus thuringiensis toxins with larval midgut binding sites of Helicoverpa armigera (Lepidoptera: Noctuidae).
In 1996, Bt-cotton (cotton expressing a Bacillus thuringiensis toxin gene) expressing the Cry1Ac protein was commercially introduced to control cotton pests. A threat to this first generation of transgenic cotton is the evolution of resistance by the insects. Second-generation Bt-cotton has been developed with either new B. thuringiensis genes or with a combination of cry genes. However, one re...
متن کاملToxicity of several delta-endotoxins of Bacillus thuringiensis against Helicoverpa armigera (Lepidoptera: Noctuidae) from Spain.
Toxicity and larval growth inhibition of 11 insecticidal proteins of Bacillus thuringiensis were evaluated against neonate larvae of Helicoverpa armigera, a major pest of important crops in Spain and other countries, by a whole-diet contamination method. The most active toxins were Cry1Ac4 and Cry2Aa1, with LC50 values of 3.5 and 6.3 microg/ml, respectively. At the concentrations tested, Cry1Ac...
متن کاملField Evolved Resistance in Helicoverpa armigera (Lepidoptera: Noctuidae) to Bacillus thuringiensis Toxin Cry1Ac in Pakistan
Helicoverpa armigera (Hübner) is one of the most destructive pests of several field and vegetable crops, with indiscriminate use of insecticides contributing to multiple instances of resistance. In the present study we assessed whether H. armigera had developed resistance to Bt cotton and compared the results with several conventional insecticides. Furthermore, the genetics of resistance was al...
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ژورنال
عنوان ژورنال: Journal of Insect Science
سال: 2020
ISSN: 1536-2442
DOI: 10.1093/jisesa/ieaa129