Silkworm simple english wikipedia, the free encyclopedia. A silkworms preferred food is white mulberry leaves, though they may eat other mulberry species and even osage orange. Determination of optimal temperature for production of quality eri. The indian tasar silkworm antheraea mylitta is a natural fauna of tropical india. In their native lands, they are handfed mostly castor bean and tapioca leaves, but will also eat ailanthus and ligustrum. Adult moths are large with wings spanning about 10 cm. Life cycle of eri silkworm pdf samia ricini, or the eri silkworm, is raised in india and parts of the orient for its silk. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.
Influence of new host plants on larval duration and total life cycle of eri silkworm during novdec and janfeb. The plinth area 10 m x 5 m size rearing house having tin or thatch roofing with 1. Life cycle life cycle of the silkworm consists of four stages i. 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. In this article we will discuss about the life cycle of various silk moths. The eri silkworm which lives upon castor, is a domesticated form, cultivated in warm damp places. Lets explore the different stages of life of a silkworm. Life cycle of erisilkworm the life cycle of erisilkworm has four stages egg, larvae, pupa encased in cocoon and adult moth. Applied zoology gelecegi onemseyenler dernegi gonder. Samia ricini, or the eri silkworm, is raised in india and parts of the orient for its silk.
They will change to white if they are infertile or black if fertile. Screening for eri silkworm samia ricini donovan ecoraces using. The eri moth is multivoltine in nature and can pass 6 life cycles in a year. The serial progressions of four distinct stages of development complete one generation of the species. The silkworm bombyx mori is the larva or caterpillar of the bombyx mori moth. After both circles have been cut and colored, take the two circles and a. The fifth instar larva is fully grown and consists of three pairs of jointed legs and five pairs of unjointed stumpy prolegs. Its cocoon has loose texture and silk is not reliable, hence, this is carded and spun. Students will love creating their peekaboo life cycle spinner wheel and learning all about the different stages of silkworms. 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. In silkworm special excretory organs called m malpighian tubes arise at the junction of small intestine and colon in the hind the tube arising on each side of the hind branches arise. The lifecycle of a crawling worm into a moth goes through several stages. Life cycle of tasar silkworm antheraea mylitta fig2. Silkworm the silkworm, bombyx mori produces the silk of commercial importance it is the caterpillar of a moth whose cocoon is used to make silk.
Life cycle of eri silkworm philosamia ricini fig 1. Fungal colonies cfu x 104g soil in eri waste supplemented soil after 60 days with perionyx excavatus as. Eggs hatch after 910 days, larva develop for 2433 days, pupation lasts 814 days and adults live only 34 days. Follow up 7 the life cycle of a silkworm objectives. 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. Silkworm bombyx mori larva or caterpillar and butterfly of silk moth on a cocoon. Saturniidae is known to be reared in different parts of the world with diverse expectations for its silk fibre, food and biomaterials. Our yarn, fiber, and hand loom products are 100% naturally dyed.
It is the closest relative of bombyx mandarina, the wild silk moth. It is the caterpillar of a moth whose cocoon is used to make silk. Silkworm moths go through four stages of development egg, larva, pupa and adult as do the majority of insects. Pdf rearing of eri silkworm samia cynthia ricini boisd. Tasar silk is generated by the worm of the silk month antheraea mylitta.
Life cycle and morphology of non mulberry silkworms dr. For eri silkworm breeding to has been researched in complete cycle. The silkworm is the larva stage of the silk moths life cycle. Pdf the eri silkworm, samia cynthia ricini highly preferring castor as. 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. Silkworm in yellow cocoon, life cycle of silkworm life cycle of silk worm.
Generally, the warmer the weather, the quicker the silkworm will complete its lifecycle, however, other factors such as humidity and exposure to sunlight are also very important. These worms are totally domesticated and are reared indoors. There are 26 ecoraces of eri silkworm like borduar, khanapara, kokrajhar, titabar, diphu, genung, nongpoh etc. A conscious company passionate about keeping the circular economy around eri silk alive and flourishing in the villages of meghalaya. Rearing of eri silkworm upper subansiri, arunachal pradesh. It is the exclusive food for the silkworm, which during its larval life is reared for silk production. Apart from our recent worm land creation and our long standing affinity with anything wildlife we. Silk is a smooth, shining, fabulous and unique natural fiber produced by several species of silkworm. Egg ova the egg is the first stage in the lifecycle of a. The total lifecycle of a silkworm ranges from 68 weeks. The life cycle of a silkworm, from a microscopic egg to a beautiful moth is simply mindblowing. Short notes on the life cycle of mulberry silk moth.
Raising eri silkworms is referred to as ericulture. The silkworm, bombyx mori produces the silk of commercial importance. The life history of silkworm moths consists of four distinct stages. The life cycle of mulberry silkworm completes in 4555 days, consists of stages egg, larva, pupa and moth. They complete their life cycle of four different metamorphosing phases, egg. Its life history resembles that of the mulberry worm. Ever wondered about the life of a silkworm or about peace. Techniques of rearing silkworm rearing of eri silkworm, samia ricini donovan rearing house.
It shows the life cycle of silkworm from first stage to last stage. Lifecycle of silkworm with diagram biology discussion. In earlier times, use of silk was reserved only for kings and monarchs. The life cycle of the silkworm moth takes about 6 to 8 weeks, depending on temperature. The diagrams below show the life cycle of the silkworm and the stages in the production of silk cloth.
Multivoltine 14 days 10 days 350500 eggs 3035 days 5. They will be a couple of days behind all the way through their life cycle. The silkworm is the larva or caterpillar of a silk moth. Silkworm rearing and silk weaving, called sericulture, is an environmentally sustainable agroindustrial activity practiced in four major regions globally, with the. The moth is important because it makes the silk, and no longer lives in the wild. They are a fun addition to your life cycle studies. Silkworm in yellow cocoon, life cycle of silkworm silkworm life cycle. The life cycle of silkworm completes in the following four phases.
Moths lay eggs which develop into the silkworm larvae, grub or caterpillar commonly called silkworms. The eggs hatch and the caterpillars or silkworms emerge. It is an economically important insect, being a primary producer of silk. Life cycle,morphology and rearing of eri silkworms subject. Silk is a valuable fabric that symbolizes wealth and prosperity. Pdf pattern serenity figure 4 by stitchfloral embroidery tutorial, digital download. Silkworm life cycle worksheets 2nd grade free printables.
Assam is the only place in the world where all commercially exploited varieties of silk viz. Culture, muga culture and eri culture, and each one is described separately in the. Background information silkworm lifecycle the silkworm is an insect that passes through the four stages of metamorphosis. The silk is not reelable like bombyx mori, the mulberry silkworm, so it is spun into a yarn which is both soft and durable. Multivoltine races found in tropical areas have the shortest life cycle. Silkworm life cycle most commercial silk is mulberry silk that is produced from cocoons of the mulberry silkworm moth, bombyx mori, and comes mainly from china and india. Its life history resemble with that of mulberry worms. Only a very few pupas are allowed to grow into a silkworm moth. Ielts academic writing task 1 graph writing diagram a process. Life cycle of eri and muga silkworm the full life cycle of eri and muga silkworm.
The duration of life cycle is six to eight weeks depending upon racial characteristics and climatic conditions. Multivoltine 14 days 10 days 350500 eggs 3035 days 5 instars. The life cycle of bombyx mori demonstrates the most advanced form of metamorphosis. Eri silkworm, food plants, larval growth, effective rate of rearing. After each molting, the larva neither feeds nor moves for the next 2024 hours. The wings are greyish brown in colour with prominent eye spot fig. The cocoons of this worm have very loose texture and the silk produced is called as arand silk locally. This region provides favorable conditions to these valuable silk insects. This insect is also called the silkwormmoth and the mulberry silkworm male and female moths are flightless and lack functional mouth parts. Eri silkworm is one of the domesticated silkworm races under self rearing in assam. C l a s s v i i life cycle of silkworm and processing of silk 2. The life cycle of a silkworm biology for kids mocomi.
Food plants for erisilkworm caster beans ricinus communis. Life cycle of silk moth the female silk moth lays about 300 to 400 eggs at a time. They eat for 2030 days, consuming large amounts of mulberry leaves, and molt through four changes of skin or instars. Silkworm life cycle stock photos download 82 royalty. The eri silkworm undergoes complete metamorphosis like other lepidopterans and has four stages egg, larva, pupa and adult. Silk is an expensive and beautiful piece of fabric that used to be worn by only kings and royalty in the past. Silk fiber generally is produced by the mulberry silkworm, bombyx mori, which was domesticated nearly 2,000 years ago in china. Eri silkworm ecoraces were investigated for morpho logical characters of larva, life.
Important stages in the life cycle of a silkworm animal sake. Bombyx mori, the domestic silk moth, is an insect from the moth family bombycidae. Production of quality eri silkworm cocoon and seed. In silkworms life cycle, there are 5 instars of larva.
The adult stage 7 days the body of the moth is covered in short fine. The female lays about 300 to 400 eggs in clusters upon mulberry leaves. The larval growth rate and rearing performance of eri silkworm have also been studied exten. Life cycle of a silkworm authorstream presentation. They will be a couple of days behind all the way through their. Mahesha h b associate professor department of sericulture yuvarajas college, university of mysore, mysore, india. To learn that animals reproduce as part of their life cycle and in that life cycle there are distinct processes and stages. One of the tubes situated on the dorsal side bra are three pairs of m alpighian tubes in the silkworm larva that stick to the midgut and run towards the. Mulberry pat, eri, muga and oak tasar silk are produced.