The cocoon, produced by most holometabolous insects, is built with silk that is usually produced by the larval salivary gland. Although this silk has been widely studied in the Lepidoptera, its composition and macromolecular arrangement remains unknown in the Hymenoptera. The macromolecular array patterns of the silk in the larval salivary gland of some meliponids, wasps, and ants were analyzed...

An attempt was made to rear the eri silkworm, Philosamia ricini on leaves of caster and reared under laboratory condition. It observed that is a primary potential host silkworm. The growth parameters cocoon characters silkworm were normal. successfully lasted its life cycle ranged from 38 40 days. effective rate rearing, weight pre-spinning larvae, cocoon, shell pupae 70 75 per cent, 6 7 g, 3.0...

Organisms exert remarkable controls over the minerals that form such an important part of their internal or external skeletons. For example, the microenvironment in animals that use calcium carbonate in their shells determines not only where and when crystals form but also which crystalline form, or polymorph, they will be. As illustrated in the scanning electron micrographs above, the segmente...

Host manipulation by parasites and parasitoids is a fascinating phenomenon within evolutionary ecology, representing an example of extended phenotypes. To elucidate the mechanism of host manipulation, revealing the origin and function of the invoked actions is essential. Our study focused on the ichneumonid spider ectoparasitoid Reclinervellus nielseni, which turns its host spider (Cyclosa arge...

The study focused on constraints perceived by farmer in adoption of sericulture production technologies Solapur district Maharashtra because non awareness improved as well poor living conditions farmer. Sericulture is formed from the Greek word ‘sericos’, which means silk and English ‘culture’, meaning rearing. an agro-industry that produces a product. Silk fibrous protein generated silkworm or...

Silkworm cocoons have evolved a wide range of different structures and combinations of physical and chemical properties in order to cope with different threats and environmental conditions. We present our observations and measurements on 25 diverse types of cocoons in a first attempt to correlate physical properties with the structure and morphology of the cocoons. These two architectural param...

Electrospinning offers a powerful route for building one-dimensional (1D) micro/nanostructures, but a common requirement for toxic or corrosive organic solvents during the preparation of precursor solution has limited their large scale synthesis and broad applications. Here we report a facile and low-cost way to prepare 1D porous carbon microfibers by using an electrospun fiber-like natural pro...

The tropical tasarculture in India involve two and half lakh aboriginal families to produce vanya (tasar) silk by growing wild silk-insect as their cultural heritage and livelihood. However, the inadequacy in tasar commercial egg (on-time to match crop seasons) and quality, often results to uncertainty of silkworm rearing, hampering the crop economics and intensification of tasar industry. To o...

Optimization of protein extraction using silk cocoon was carried out by the design of experiment (DOE) to obtain the response surface methodology ( RSM ). Box-Behnken rotatable design was used to create an experimental program to provide data to model the effects of various factors on protein extraction efficiency. The variables chosen were sodium carbonate concentration ( 1 X ), Lithum bromide...