Lifecycle of silkworm with diagram biology discussion. Determination of optimal temperature for production of quality eri. Rearing performance of the eri silkworm, samia cynthia. Important stages in the life cycle of a silkworm animal sake. Microwaveassisted extraction of silkworm pupal oil and evaluation of its fatty acid composition, physicochemical properties and antioxidant activities. Nutrient properties of eri and muga silkworm pupae the nutrient properties of eri and muga silkworm pupae are given in the table 1. Larval exposure to chlorpyrifos affects nutritional. The silk worms that produce eri silk feed on castor plants, hence deriving the name eri. It is an economically important insect, being a primary producer of silk. There are two other main types of silk worm used for ahimsa silk, samia ricini, the eri silk moth, and the various tussah tasar moths, such as antheraea pernyi, the chinese tussah moth, antheraea mylitta, the indian tasar moth, and antheraea assamensis, the muga moth. Silk is a valuable fabric that symbolizes wealth and prosperity. Historically this is the highly desired fibre which has been used extensively for apparels, home. Vishnuvardhan reddy abstract castor, ricinus communis l. Isolation and characterization of neutral lipids of.
A 1hnmr based study on hemolymph metabolomics in eri. Philosamia ricini eri silkworms produce a white or brick red silk known as eri silk or endi or errandi silk. Research article an evaluation of 1deoxynojirimycin oral. The commonly occurring wild eri silkworm is philosamia cynthia, which is either bi or trivoltine in nature. During this time, the worm does not take any food, wriggles out of the old skin and comes out with a new, soft skin. Due to its thermal properties it is warm in winter and cool in summer. The daily activity of a eri silkworm rearer related to silk culture in kaliabor, assam oiqua. The neutral lipid of desilked eri silkworm pupae samia cynthia ricini grown on two different host plants, castor ricinus communis linn.
Tasar silk is generated by the worm of the silk month antheraea mylitta. Cfu x 104g soil in eri waste supplemented soil on 0 day with eisenia foetida as test species fig3. Determination of optimal temperature for production of quality eri silkworm cocoon and seed endale hailu1,2,3, yuehua zhang1,2 and workneh ayalew3 1jiangsu university of science and technology, china 2sericultural research institute, chinese academy of agricultural sciences, china 3icipe ethiopia yesh project, ethiopia submission. The daily activity of a eri silkworm rearer related to. Seeds of four high oil yielding castor hybrids varieties viz. There are eight replication of eri silkworm egg of total 40 disease free layings dfls were preserved in each group and each replication 5 dfls were kept for preservation for all of four age group of eri eggs. The food provided to silkworms during their rearing affects larval growth, survival rate, cocoon parameters and silk quality gomma, a. Eri silkworm, food plants, larval growth, effective rate of rearing. Effect of botanical insecticides on the growth and silk. Microwaveassisted extraction of silkworm pupal oil and. Eri silk fabric is a boon for those who practice absolute nonviolence, not using any product obtained by killing any animal. A 1 hnmr based study on hemolymph metabolomics in eri silkworm after oral administration of 1deoxynojirimycin. Mulberry silk comes from the silkworm, bombyx mori l which solely feeds on the leaves of mulberry plant.
The plinth area 10 m x 5 m size rearing house having tin or thatch roofing with 1. Antherea perniyi has enabled the country to produce the oak tasar silk, phylosamia ricini, the eri silkworm, which feeds on ricinus communis, is raised in assam and orissa commercially. House any building or thatch which is well ventilated may be used for rearing the worms, but mudwalled thatched houses are the best as they are cool in summer and warm in winter season. The eri silkworm, samia cynthia ricini is a nonmulberry, domesticated, multivoltine insect, producing spun silk. Male and female moths are flightless and lack functional mouth parts. Effect of temperature on the silk production of the eri. Euphorbiaceae is an important nonedible oilseed crop, the leaves. The oil content in pupae was estimated to be in the range of 18. Life cycle of eri silkworm philosamia ricini fig 1. Research article an evaluation of 1deoxynojirimycin oral administration in eri silkworm through fat body metabolomics based on 1 h nuclear magnetic resonance chaoweiwen, 1 xiaodonglin, 2 minjiandong, 2 andmingjiedeng 2 school of laboratory medicine and life sciences, wenzhou medical university, wenzhou, china. Rearing of eri silkworm upper subansiri, arunachal pradesh. If allowed to develop from pupa, and not destroyed at this stage in the cycle so that silk can be created, the caterpillar will develop into a creamy white moth patterned in brownscientifically named bombyx mori. In earlier times, use of silk was reserved only for kings and monarchs. It belongs to the family satuniidae under order lepidoptera and class insecta.
This is a video clip produced by trainee of 3 days training on communicating science through video presentations. There were statistically differences among eri and muga silkworm pupae in terms of moisture, protein, crude fat, total ash, crude fibre, carbohydrate p eri silkworm, samia cynthia ricini highly preferring castor as a host plant followed by tapioca and also the suitability of other alternative host has been found out for the continuous rearing. From this collaborative process, it was established the study would explore. Philosamia ricini eri silkworm, one of the most exploited, domesticated and commercialized non mulberry silkworm is known for mass production of eri silk. However, due to use of different varieties of castor leaves, eri silkworms are susceptible to several growth related problems. Feeding of different host plants on economic traits of eri silkworm 54 leaves during 4th instar and 5th instar periods recorded the mean cocoon weight of 3. Study of physical characteristics of silk fibre of eri. Pdf on aug 23, 2016, edison omollo and others published eri. This insect is also called the silkworm moth and the mulberry silkworm fig. Bombyx mori, the domestic silk moth, is an insect from the moth family bombycidae. There are 26 ecoraces of eri silkworm like borduar, khanapara, kokrajhar, titabar, diphu, genung, nongpoh etc. Tolerant to high temperature and low humidity conditions by continuously regime duanpen wongsorn1, 2 sivilai sirimungkararat1, 2, 3 and weerasak saksirirat2, 3 1entomology section, department of plant. Eri silkworm it is a domesticated species and is reared on castor plants, so they are called castor silkworms. The silkworm larvae get exposed to pesticide residues on the leaves of food plants.
The silkworm is actually the larvae, or caterpillar stage, in the life cycle of the silkworm moth. In commercial races of silkworm, moulting occurs four times, lasting for 1530 hours. Effect of botanical insecticides on the growth and silk production of ambagoan and lakhimpur strains of eri silkworm, samia cynthia ricini boisduval v. Sericulture is an important labourintensive and agrobased cottage industry. An alternate host plant of eri silkworm on free shipping on qualified orders. Eri culture has been proven beneficial and gainful employment to the castor farmers, as 30% of defoliation will not affect the seed yield. It is multivoltine breed having five to six cycle in a year. Full text international journal of applied sciences and. It is the closest relative of bombyx mandarina, the wild silk moth. International journal of applied sciences and biotechnology. The castor silkworm belongs,to the species sarnia cynthia ricini. Pdf eri silkworm rearing practices in kenya researchgate.
Eri silkworm eri silkworm is biologically named as philosamia ricini. All of these biological aspects were much affected by temperature. Eri silk is called the father of all forms of cultured and textured silks. Lets explore the different stages of life of a silkworm. Fungal colonies cfu x 104g soil in eri waste supplemented soil after 60 days with eisenia. Both these moths belong to the family saturnidae are largesized and their caterpillars are also considerably monstrous, stout and about 10.
Eri silkworm rearing practices in kenya edison omollo oduor, lucy ciera, vijay adolkar and odoch pido abstract ericulture eri silkworm farming is an agrobased traditional activity that has played an important role in generating income and employment for people living in. Haemolymph protein estimation in six different strains of eri silk. Significant difference was not noticed between independent and sequential rearing. India continues to be the second largest producer of silk in the world. The silkworm, bombyx mori produces the silk of commercial importance. Pdf the eri silkworm, samia cynthia ricini highly preferring castor as a host plant followed by tapioca. Eri silk is darker and heavier than other silks and blends well with wools and cotton. Affordable and search from millions of royalty free images, photos and vectors. Techniques of rearing silkworm rearing of eri silkworm, samia ricini donovan rearing house. Types of silk international sericultural commission. Production of quality eri silkworm cocoon and seed.
Evaluation report for eri silkworm sustainability program. It is the caterpillar of a moth whose cocoon is used to make silk. All the strains reared at present belong to the species. Course ware central muga eri research and training institute. Life cycle of tasar silkworm antheraea mylitta fig2. The eri silkworm, samia cynthia ricini highly preferring castor as a host plant followed by tapioca and also the suitability of other alternative host has been found out for the continuous rearing. The silkworm is the larva or caterpillar of a silk moth. A silkworm s preferred food is white mulberry leaves, though they may eat other mulberry species and even osage orange. In this article we will discuss about the life cycle of various silk moths. Silk a natural fibre silk often referred to as the queen of textiles is the strongest natural fibre lustrous, smooth, inherent affinity for dyes, vibrant colours, having high absorbent and light weight qualities excellent drape and elastic properties. The life cycle of a silkworm, from a microscopic egg to a beautiful moth is simply mindblowing.
These are attacus receni, b, the eri silkworm moth and antherea paphia, b, the tassar silkworm moth. Multivoltine 14 days 10 days 350500 eggs 3035 days 5 instars 12 september 20 11 44 summer85 days winter. Mahesha h b associate professor department of sericulture yuvarajas college, university of mysore, mysore, india. Pdf evaluation of different castor genotypes based on. Determination of optimal temperature for production of. India has the unique distinction of being the only country producing all the five kinds of silk mulberry, eri, muga, tropical tasar and temperate tasar.
The egg incubation and rearing was undertaken as per the recommended method of choudhury 1982a. Eri silkworm, samia ricini, life cycle from eggs to caterpillar. There were statistically differences among eri and muga silkworm pupae in terms of moisture, protein, crude fat, total ash, crude fibre, carbohydrate p eri silkworm rearing practices in kenya. The present study investigates the effect of commercial formulation of chlorpyrifos pyrifos20 ec on. Brush newly hatched worms on 90 days old foliage 120 days old in winter under nylon net in between 5 to 7 am on the opposite side of the sun during summer and towards sun during winter. Eri silk is one of the purest forms of silk that is a true and genuine product of the samia cynthia ricini worm. The eri silkworm which lives upon castor, is a domesticated form, cultivated in warm damp places. Of the total production of 2,969 tonnes of silk in india, as much as 2,445 tonnes is produced by the mulberry silkworms, bombyx mori.
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