The impact of a tapioca-based artificial diet on the developmental rate, life history parameters, and fertility was examined over five consecutive generations for the cotton bollworm, Helicoverpa armigera Hubner (Lepidoptera: Noctuidae), a highly polyphagous pest of many agricultural crops. The study showed that when fed the tapioca-based artificial diet during larval stage, larval and pupal de...

Abstract Background Insecticidal proteins from the Bacillus thuringiensis ( Bt ) marks genetically modified cotton crop that was commercialized in India March 2002 for control of lepidopteron bollworms. Despite organized initial control, pink bollworm (PBW), Pectinophora gossypiella (Saunders), adapted itself to cry toxins resulted field failures 2016 and 2017. The present study designed unders...

The bioefficacy of various plant extracts, namely Azadirachta indica A. Juss, Khaya senegalensis Desrousseaux (A. Jussieu) and Hyptis suavuolens (L.) Poit, either alone or in combination with half the recommended dose of synthetic pesticides, was studied with farmers to find a more sustainable strategy for the management of bollworms in cotton. A number of treatments were farmer innovations. Th...

Laboratory studies was conducted to investigate effect of mating behavior on egg laying, host selection and competition with Bracon hebetor. The results showed that no differences in laying between mated unmated females. number were 90.67 per female females respectively. However produce only males progeny.The parasitoid response the larvae different lepidopterous insects such as. Mediterranean ...

The cotton bollworm Helicoverpa armigera occurs as a major pest in many economically important crops, including cotton, pigeon pea, chickpea, cowpea, sunflower, tomato, sorghum, pearl millet and other crops. Intestinal microorganisms play role the degradation of diet components insects. In order to know gut bacteria insecticide resistance five insecticides Chlorpyriphos (20% EC), Cypermethrin (...

Melanization, an important insect defense mechanism, is mediated by clip-domain serine protease (cSP) cascades and is regulated by serpins. Here we show that proteolytic activation of prophenoloxidase (PPO) and PO-catalyzed melanization kill the baculovirus in vitro. Our quantitative proteomics and biochemical experiments revealed that baculovirus infection of the cotton bollworm, Helicoverpa a...

Abstract Background After the commercialization of insect-resistant transgenic Bt cotton Bollgard I & II, India ranks first in world production. Cotton insecticide consumption was drastically reduced as nearly 95% area replaced with II. However, benefits appear to have been diminished pink bollworm, Pectinophora gossypiella (Saunders) (Lepidoptera: Gelechiidae) developed field resistance Cr...