3.26(h)] 5 cm long in case of female and 4.6 cm long in male. Peak season: Summer season of the year. It feeds on castor leaf. 2. Diseases and pests of eri silkworm Pebrine. The mulberry silkworm is susceptible to various diseases and is attacked by parasites and pests. The eri silkworms, S. ricini were maintained in our laboratory with a relative humidity of 75 ± 5% at 26 ± 1 o C temperature with 12 h of photoperiod under aseptic conditions. The intensity of each type or diseases may however vary in different varieties of silkworm. Rearing of eri silkworm: Disease-free seed cocoons are obtained from … Recently, Eri silkworm rearing has emerged to be a potential alternate to mulberry silkworm [6] This is because Eri silkworm (Philosamia cynthia ricini) are more resilient to diseases, therefore are not very sensitive thus require less care. Pebrine disease prevention and control system. Study on the drug for silkworm disease. Standard and regulations of disease control 3. DISEASE DIAGNOSIS Early detection of silkworm disease is an important step in management of disease Generally in silk worm develops their disease symptoms at the late stage of disease development The period left between the development of characteristic symptoms and death is to short to adopt the curative measures. Only microscopic examination of the silkworm larvae may indicate the presence of spores of the pathogen. At early stage of infection: The infected early stage worms do not show any morphological abnormality. Eri cocoons are stalkless, flossy, white or brick red in colour [Fig. At the end of larval period, the larvae crawl in search of suitable places to spin cocoons. It is the most serious disease in muga silkworm. the silkworm diseases . [1] The name "eri" is derived from the Assamese word "era", which means "castor", as the silkworm feeds on castor plants . It was imported to Thailand in 1974. Eri silk has a unique appearance … In India sericulture scientists are trying to produce silk in East-Asia. Various types of silkworm diseases of larvae are caused by virus, bacteria, fungus and protozoa.These diseases of larvae cause great trouble and loss to the silkworms. Innovation of detection technology of silkworm disease s 45 4.3 Prevention and Management of Silkworm Diseases and its practicing 7/21/2015 5. Silkworms. Causal organism: Protozoan- Nosema sp. Eri silkworm is generally hardy and not easily susceptible to diseases. Eri silk (Assamese: এৰি ৰেচম) comes from the caterpillar of Samia ricini, found in northeast India and some parts of China, Japan. 1. Eri silkworm (Attacus ricinni): ADVERTISEMENTS: It also belongs to the family saturnidae and produces silk in East-Asia. As a kind of wild species, E cocoons have characteristics different from those of Bombyx mori cocoons (B cocoons). All varieties of silkworms are susceptible to various diseases caused by protozoan, bacteria, virus and fungus. PEBRINE (PHUTUKA) It is locally called Phutuka rog. Symptoms. They were fed on castor (Ricinus communis) leaves. respiratory diseases represent the largest cause of mortality in the Thai population over the past 10 years, and cause a huge economic burden costing (World Health Organization). 2.1. Pupa: Pupal stages last for 15-37 days during when larvae change to pupae. Sericulture scientists are trying to produce such cross breeds which can pro vide good quality of silk and can be reared easily. Eri silkworm cocoons (E cocoons) are natural composite biopolymers formed by continuous twin silk filaments (fibroin) bonded by sericin. Silkworm cocoons ( E cocoons ) are natural composite biopolymers formed by continuous twin silk filaments ( fibroin bonded! Not easily susceptible to various diseases caused by protozoan, bacteria, and! 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