However, the turmoil of the cultural revolution prolonged development into the 1980s. Silkworm rearing effectively means the culturing of five larval instars as other stages like egg, pupa and adults are nonfeeding stages. It stays warm during the winter and cool during the summer. Eri silk rearing for economic development of north eastern. There were statistically differences among eri and muga silkworm pupae in terms of moisture, protein, crude fat. Integrated diseases management in silkworm, bombyx mori l. Rearing performance of erisilkworm samia cynthia ricini. The food provided to silkworms during their rearing affects larval growth, survival rate, cocoon parameters and silk quality gomma, a.
Silkworm moths go through four stages of development egg, larva, pupa and adult as do the. Philosamia ricini eri silkworm, one of the most exploited. After combining ability studies among the six pure line strains two eri crosses. Cassava leaves defoliation for eri silk worm rearing. Through this method time of harvesting can be reduced. Fungal colonies cfu x 104g soil in eri waste supplemented soil after 60 days with eisenia. The adult mouth is stout and dark and the wings are darkish brown and white. The present study shows that the eri silkworm larvae are susceptible to intrahaemocoelical inoculation of acmnpv. Control hemocytes with live cells, dead cells, apoptotic cells and merged pictures ad respectively. It is the closest relative of bombyx mandarina, the wild silk moth. The progressive growth of eri silkworm was superior when fed on castor.
This is a video clip produced by trainee of 3 days training on communicating science through video presentations. The authors discuss here about the disease and its symptoms and morphology. Mar 05, 2015 this is the simplest method of mounting of eri silkworm matured worm for formation of good stainless cocoons to get good remunerations. Among silkworm diseases, viral flacherie is common during silkworm rearing. Yield and yield contributing traits in eri silkworm, samia. Eri silkworm samia ricini, a nonmulberry host system. Private investigator cormoran strike returns in a new mystery from robert galbraith, author of the numberone international best seller the cuckoos calling. Sakthivel regional sericultural research station, central silk board, government of india, salem 636 003, tamil nadu, india email. The larval growth rate and rearing performance of eri silkworm have also been studied exten. Antheraea pernyi saturnidae antheraea yamamai saturnidae antheraea paphia saturnidae antheraea royeli saturnidae iii muga silkworm antheraea assama saturnidae iv eri silk worm philosamia ricini saturnidae 3. The rearing performance of different ecoraces of eri silkworm philosamia riciniwas studied during autumn season of year 2006 and 2007. Similarly, the surplus quantity of eri cut cocoons are sold openly at their door steps shetty and samson, 1998. Fungal colonies cfu x 104g soil in eri waste supplemented soil on 0 day with perionyx excavatus as test species fig3. Original article screening for eri silkworm samia ricini donovan ecoraces using morphological characters, growth, yields, and issr marker duanpen wongsorn1, weerasak saksirirat2, 3, sivilai sirimungkararat1, 2, 3, and hathairat urairong4 1 entomology section, department of plant science and agricultural resources, 2 cultivation and product development research group of.
Training was conducted by icarzpdiii, barapani, meghalaya. Screening for eri silkworm samia ricini donovan ecoraces using. The white silk fabric as white as the cultivated silk eri silk is the product of the domesticated silkworm, philosamia ricini that feeds mainly on castor leaves. 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 during unseason of crop. Rearing performance of eri silkworm philosamia ricini. Effect of botanical insecticides on the growth and silk. Silkworm rearing and silk weaving, called sericulture, is an environmentally sustainable agroindustrial activity practiced in four major. The results show that application of folic acid does not affect survivability of silkworm. Silk fiber generally is produced by the mulberry silkworm, bombyx mori, which was domesticated nearly 2,000 years ago in china. Bombyx mori infectious flacherie virus bmifv causes infectious flacherie disease in silkworm which is chronic in nature. 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. Study on morphological characters, life cycle, survival and yields of eri silkworm. Among all the silkworms produced commercially, eri is highly resistant to pebrine in comparison to other silkworms.
The strains were maintained in the germplasm bank up to fifth generation to get the homozygous. After cocooning you can remove them and spin some silk, or you can wait until they hatch they will hatch in about a month. When novelist owen quine goes missing, his wife calls in private detective cormoran strike. Larvae of eri silkworm samia cynthia ricini were reared on artificial diets containing bajra pearl millet, jau barley, jowar sorghum bicolor, maize, barnyard millet echinochloa frumentacea, rice, wheat, bengal gram chickpea, black gram, green gram, lentil, lobia cowpea, pea, french bean phaseolus vulgaris, red gram pigeon pea, soyabean, castor, groundnut, linseed. Bombyx mori, the domestic silk moth, is an insect from the moth family bombycidae. Biochemical changes during the progressive infection of bmifv. Distribute the silkworm sequencing cards printable, scissors, glue, and construction paper to the class. There is a huge volume of literature supporting the positive benefits of including the long chain n3 fatty acids in the diet. In this unit, you will study the nonmulberry silkworm rearing. Six strains of eri silkworm were isolated from samia ricini donovan on the basis of larval colour and body markings, that is, yellow plain yp, yellow spotted ys, yellow zebra yz, greenish blue plain gbp, greenish blue spotted gbs and greenish blue zebra gbz. Rearing of eri silkworm upper subansiri, arunachal pradesh. Silkworm stops feeding towards the end of fifith in star and starts building the cocoons.
Nutrient properties of eri and muga silkworm pupae the nutrient properties of eri and muga silkworm pupae are given in the table 1. Prominent downregulation of storage protein genes after bacterial challenge in erisilkworm, samia cynthia ricini. Mulberry sericulture whereas ranchi jharkhand deals with tasar culture and. Meng y1, omuro n, funaguma s, daimon t, kawaoka s, katsuma s, shimada t. Silkworm moths only live for a few days and must mate as soon as they emerge from their cocoons. The five ecoraces had similar morphological characters in all development stages. However, due to use of different varieties of castor leaves, eri silkworms are susceptible to several growth related problems. The hy1 received two separate nato reporting name, the cssn2 safflower for the ship to ship version and the cssc2 silkworm for the land based coastal defense variant the hy1j was intended for use on the type 051 destroyers. Our pdf merger allows you to quickly combine multiple pdf files into one single pdf document, in just a few clicks.
Silkworm artificial dry diet, refer to the instructions provided with it. Since it is the most critical period of its metamorphosis. Also, silk is finer and has more of a sheen than other fabrics, and it also doesnt harbor static electricity. Cfu x 104g soil in eri waste supplemented soil on 0 day with eisenia foetida as test species fig3. Eri silk also possesses unique properties and being openmouthed, its easily blendable with other natural fibers like cotton capinera. Material bank mrmb for muga presently merged with regional sericulture. Hatchlings of the erisilkworm philosamia cynthia ricini, one of the leaffeeding insects, may be reared to the adult stage on an artificial diet, named as a semisynthetic diet, which does not contain any extracts from leaves of food plants such as ricinus communis, aylanthus glandulosa etc. Growth rate pattern and economic traits of silkworm, bombyx mori l corresponding author. The larvae becomes transparent, shiny and stops feeding before spinning. Pdf eri silkworm rearing practices in kenya researchgate.
Astaurov, increased resistance of the silkworm bombyx mori l. Muga, the golden yellow silk produced by muga silkworm is unique to assam and neighboring states of northeastern region is also practiced in west bengal in recent years. Further, the larvae receiving the castor leaves during fifth instar had better growth irrespective of the diet used earlier, i. Whole life cycle spans through 4555 days with 1012 days of egg stage, 2530 days of larval stage, 23 cocoon spinning days, 57 days as pupal duration and 45 days in adult stage. Article information, pdf download for hydroentangled nonwoven eri silk fibroin. Singh international journal of ecology and ecosolution published. Applied zoology gelecegi onemseyenler dernegi gonder. Introduction the eri silkworm, philosamia ricini, hutt. Effect of botanical insecticides on the growth and silk production of ambagoan and lakhimpur strains of eri silkworm, samia cynthia ricini boisduval v. Among the nonmulberry silkworm, the philosamia ricini bsd is the main eri silkworm commonly reared on different host plants in assam, kerala, west bengal and some part of bihar and jharkhand.
Wrap the petiole end of the stem of a young, tender mulberry leaf with a piece of moist paper towel and place in the petri dish. The silkworm first makes a support then spins the cocoon. It also belongs to the family saturnidae and semidomesticated in nature. Silk is a smooth, shining, fabulous and unique natural fiber produced by several species of silkworm. In laboratory study we were used 10 plant species, viz. Yield and yield contributing traits in eri silkworm, samia ricini donovan in different combinations sarkar b. With the development of genomic and biotechnological tools, b. Sep 21, 2015 however, due to use of different varieties of castor leaves, eri silkworms are susceptible to several growth related problems. The native place of this species is assam where it has now become a good source of cottage industry. Eri the word eri is derived from sanskrit word eranada or endi which mean castor plant is a multivoltine silk spun from openended cocoons, unlike other varieties of silk. In the previous unit, you have studied about the details of mulberry silkworm. Screening for eri silkworm samia ricini donovan ecoraces.
Tapioca is also as known as cassava is an important starchy root crops and has been grown in india for more than a century. This is the simplest method of mounting of eri silkworm matured worm for formation of good stainless cocoons to get good remunerations. Jan 28, 2015 this is a video clip produced by trainee of 3 days training on communicating science through video presentations. The caterpillars of this worm feed machilus plant and the silk produced by this moth is known as muga silk. Pdf on jan 1, 2010, vadamalai elangovan and others published rearing performance of eri silkworm philosamia ricini in monsoon season of uttar pradesh. Food plants of eri silkworm, samia ricini donovan their rearing performance and prospects for exploitation. Pdf rearing performance of eri silkworm philosamia ricini in. Place a piece of filter paper in the bottom of the petri dish and moisten it use a spray mister if possible so that it is damp but not soggy. Eri silkworm is polyphagous species and reared mostly on the leaves of castor and kesseru plant. It is an economically important insect, being a primary producer of silk. Techniques of rearing silkworm rearing of eri silkworm, samia ricini donovan rearing house. Layout, madivala, hosur road, bangalore 560 068, karnataka state, india. The quality of cocoon eri silkworm is a polyphagous, multivoltine worm whose primary host is castor. Biochemical changes during the progressive infection of bmifv in the silkworm, bombyx mori l.
Muhsin demirci tefsir tarihi pdf free otep blood pigs dvdrip svcd extra quality mapilabs mail merge toolkit crack fruity loops studio 10 free download full davidson principles and practice of medicine 22nd edition pdf free download pdf merge for windows 7 download tefsir tarihi muhsin demirci pdf download. Proceedings of the national workshop on eri food plants, october 1112, 2006, guwahati, india. This ensures that as soon as the eggs are hatched, the larvae can grab onto the host plant and start feeding. Dec 20, 2015 domesticated eri silkworm samia ricini, reared in many parts of india, japan and china, is a nonmulberry silkworm.
Classification of silkworms based on voltinism voltinism is a term used in biology to indicate the number of broods or generations of an organism in a year. The silkworm is the larva or caterpillar of a silk moth. Prominent downregulation of storage protein genes after. The amino acid sequence in a fraction of the fibroin of bombyx mori.
There are 26 ecoraces of eri silkworm like borduar, khanapara, kokrajhar, titabar, diphu, genung, nongpoh etc. The rearing performances of different ecoraces of eri silkworm such as borduar, titabar, dhanubhanga and mendipathar were analyzed based on their hatching %, larval duration d, weight of full grown larvae g, yield by number and. Hatchlings of the eri silkworm philosamia cynthia ricini, one of the leaffeeding insects, may be reared to the adult stage on an artificial diet, named as a semisynthetic diet, which does not contain any extracts from leaves of food plants such as ricinus communis, aylanthus glandulosa etc. Eri silk yarn produced by this worm is unique for its typical quality of.
Larval exposure to chlorpyrifos affects nutritional physiology and. Balavenkatasubbaiah central sericultural research and training institute, mysore 570008, karnataka, india. As a result, the type 051s deployed into the pacific. Silkworm spins cocoons prior to pupa tion so as to protect itself from external disturbances and natural enemies. Eri silkworm fed on abaro registered maximum err 74. The silkworm, bombyx mori, is one of the most economically important insects in many developing countries owing to its largescale cultivation for silk production. Then ask students to color, cut out, and glue the cards in the.
Eri silkworm rearing muga silkworm reering muga silkworm. The female silkworm moth has tiny wings and a large abdomen. Fungal colonies cfu x 104g soil in eri waste supplemented soil. Life cycle of eri silkworm philosamia ricini fig 1. The plinth area 10 m x 5 m size rearing house having tin or thatch roofing with 1. Life cycle of tasar silkworm antheraea mylitta fig2. Domesticated eri silkworm samia ricini, reared in many parts of india, japan and china, is a nonmulberry silkworm. Microencapsulation and properties of the silkworm pupal.
Eri silkworm is reared indoor like that of mulberry silkworm. Effect of different level of spacing provided to the fifth instar larvae of eri. Effective rate of rearing err, which reveals percentage of the number of cocoons harvested to number of larvae brushed, has also showed a significant difference when eri silkworms were fed on different castor genotypes. Eri silkworm samia ricini, a nonmulberry host system for. However, in case of leaf batch err by weight was recorded significantly. Keeping these in view, silkworm breeding laboratory of csrtimysore undertook a study to identify the improved crossbreeds utilizing productive bivoltine and.
Based on voltinism bombyx mori is divided in to 3 types, namely 1. Life cycle of a silk worm most commercial silk is mulberry silk that is produced from cocoons of the mulberry silkworm moth,called bombyx mori, and comes mainly from china and india. Vishnuvardhan reddy abstract castor, ricinus communis l. Growth rate pattern and economic traits of silkworm, bombyx. The success and stability of silkworm cocoon production depends upon the protection of silkworms from the diseases caused by different pathogens. Eri silkworm species being reared was found to be synthia ricini. Euphorbiaceae is an important nonedible oilseed crop, the leaves. The eri silkworm is a polyvoltine wild silkmothmultivotine, and has complete metamorphosis. Silkworm rearing and silk weaving, called sericulture, is an environmentally sustainable agroindustrial activity practiced in four major regions globally, with the highest production in asia and the pacific. Their distribution, economic and prospects for exploitation. There were statistically differences among eri and muga silkworm pupae in terms of moisture, protein, crude fat, total ash, crude fibre, carbohydrate p mayjune junejuly sepoct.
The eri silkworm culture adaptation is being practiced in a large scale on the leaves of castor. Kan liang mai eri phua kan phatthana isan eri silk rearing for economic development of north eastern thailand. Production of quality eri silkworm cocoon and seed. The mulberry leaf is the exclusive food of the silkworm bombyx mori, l. Fertilized eri silkworm eggs obtained from tosheka textiles ltd grainages are placed in a rearing box and castor leaf placed on top of the eggs as shown in figure 1. Determination of optimal temperature for production of quality eri.