types of silk with their life cycle story and stages (mulberry, tasar, oak, eri &muga silk) скачать в хорошем качестве

types of silk with their life cycle story and stages (mulberry, tasar, oak, eri &muga silk)

a moth whose larva spins a large amount of strong silk in constructing its cocoon especially : an Asian moth (Bombyx mori of the family Bombycidae) whose rough wrinkled hairless caterpillar produces the silk of commerce Mulberry silk Bulk of the commercial silk produced in the world comes from this variety and often generally refers to mulberry silk. Mulberry silk comes from the silkworm, Bombyx mori L which solely feeds on the leaves of mulberry plant. These silkworms are completely domesticated and reared indoors. Mulberry silk contributes to around 90 percent of the world silk production. Tasar silk The tasar silkworms belong to the genus Antheraea and they are all wild silkworms. There are many varieties such as the Chinese tasar silkworm Antherae pernyi Guerin which produces the largest quantity of non-mulberry silk in the world, the Indian tasar silkworm Antheraea mylitte Dury, next in importance, and the Japanese tasar silkworm Antheraea yamamai Querin which is peculiar to Japan and produces green silk thread. Eri silk These belong to either of two species namely Samia ricini and Philosamia ricini. P.ricini (also called as castor silkworm) is a domesticated one reared on castor oil plant leaves to produce a white or brick-red silk popularly known as Eri silk. Muga silk The muga silkworms (Antheraea assamensis) also belong to the same genus as tasar worms, but produce an unusual golden-yellow silk thread which is very attractive and strong. These are found only in the state of Assam, India and feed on Persea bombycina and Litsaea monopetala leaves and those of other species.