Toxicity and sublethal effects of insecticides on Helicoverpa armigera Hbner (Lepidoptera: Noctuidae)
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چکیده
منابع مشابه
Toxicity 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 کاملThe Spread of Helicoverpa armigera (Lepidoptera: Noctuidae) and Coexistence with Helicoverpa zea in Southeastern Brazil
Helicoverpa armigera, one of the world's most destructive crop pests, was first documented in Brazil in 2013. Within a few months, this polyphagous insect had spread over the Northeast and Central-West of Brazil, causing great agricultural losses. With several reports of populations resistant to pesticides and Bt crops around the world, there is great concern about the spread of this pest in Br...
متن کاملHybridization between Helicoverpa armigera and Helicoverpa assulta (Lepidoptera: Noctuidae): development and morphological characterization of F1 hybrids.
Reciprocal hybridizations between Helicoverpa armigera (Hübner) and Helicoverpa assulta (Guenée) were studied. The cross between females of H. armigera and males of H. assulta yielded only fertile males and sterile individuals lacking an aedeagus, valva or ostium bursae. A total of 492 larvae of the F1 generation were obtained and 374 of these completed larval development and pupated. Only 203 ...
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 کاملBattle in the New World: Helicoverpa armigera versus Helicoverpa zea (Lepidoptera: Noctuidae)
The corn earworm Helicoverpa zea (Boddie) and the old world bollworm Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) are allopatric species and occur in important agricultural crops. In maize, both species tend to infest the ear. The introduction of H. armigera in Brazil has created a new scenario, where these Helicoverpa species might cohabit and interact with one another, affecting the...
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ژورنال
عنوان ژورنال: African Journal of Agricultural Research
سال: 2016
ISSN: 1991-637X
DOI: 10.5897/ajar2015.10260