Studies on the quantitative parameters of silkworm bombyx mori (l.) (lepidoptera: bombycidae) fed with control and silver nanpoarticles (agnps) treated v1 mulberry leaves

The silkworm, Bombyx mori being a monophagous insect, derives all the nutrients required for its growth from the mulberry leaves. The quality of silk produced by the silkworm depends on the quality and yield of mulberry leaf as well as environmental conditions. The larval and pupal parameters of silkworm Bombyx mori fed with silver nanoparticles (AgNps) treated V1 mulberry leaves, the following works have been considered. The AgNps was synthesized by chemical method, it was diluted by different concentrations such as 25%,50 % and 75% (without dilution) fresh mulberry leaves (Morus indca L.) were sprayed by each concentration and were fed to silkworm from 3rd , 4th ,5th instar for four feeding were recommended. Then, group T, larva received V1 mulberry leaves sprayed with distilled water and served as control, group T2, T3, and T4 larvae received 25%, 50% and 75% AgNps sprayed mulberry leaves, respectively. Silkworm larvae fed on M.indica (V1) leaves sprayed with 25% concentration of AgNps (group T2 ) was significantly increased the larvae and cocoon length, width and weight, cocoon shell weight, pupal weight, shell ratio and silk filament length as compared to those fed on control (group T1) V1 mulberry leaves and other groups (T3 and T4). It has been observed from the present study that 25% AgNps treated (group T2) leaves fed by silkworms have enhanced the larval and pupal growth and quantity of silk production than control.