voltinism and biology of silkworm ppt

Acad. 2. Pebrine Pebrine is a chronic and disastrous disease of the silkworm was responsible for the sudden collapse of the silkworm industry of … 4 0 obj Thus the lifecycle of a silkworm begins again. Silkworm genetics Genetics of the qualitative traits. Morphology of egg, larva, pupa and adult. The importance of silkworm in … Other Silkworm Moths. • The silk is produced in two glands in the silkworm's head and then forced out in liquid form through openings called spinnerets. China is the native place of this moth, but now it is totally domesticated and successfully reared in … Occurrence, nature of damage, prevention and control of other pests of silkworm like Pantatomid bug … 17. the origin of the silkworm and differentia­ tion of the silkworm races because of a lack of more efficient technical methods for an approach to the problem. Due to its small size and ease of culture, the silkworm has become a model organism in the study of lepidopteran and arthropod biology. Unit-S 9 Hrs. It was estimated that silkworm genome consist of about 4.8× 108 bp, its genetic information volume is about one sixth of human being. voltinism and moultinism – popular mulberry silkworm varieties of Karnataka and India. Metamorphosis – Definition – types – significance. • The silkworm spins approximately 1 mile of filament and completely encloses itself in a cocoon in about two or three days. 13' Popular silkworm breds and hybrids of Karnataka and their economic traits. The purpose of this article is to review silkworm (Bombyx mori) as a genetic resources of Turkey. Genetic engineering of the silkworm, Bombyx mori, opens door to the production of new kinds of silk and to the use of silkworms as proteosynthetic bioreactors. Life Cycle 5. 5. 4 Fukuda, S. (1951) The production of the diapause eggs by transplanting the suboesophageal ganglion in the silkworm. Integument: its structure and derivatives. There are over 450 morphological, physiological and biochemical characters recorded at present, among them 300 ( including multi-allele) had been located on 27 12' Classification of silkworms based on moultinism, voltinism and geographical distribution. the major protozoan disease of the silkworm is the pebrine disease, so named due to the appearance of black peppery patches following infection. The insertion of foreign genes into silkworm genome and the control of their expression by diverse promoters have become possible but are not yet efficient enough for commercial use. Diseases 7. Share Your PPT File. It is well known for genuine silk. Jpn. 3. Proc. Unit-G 10 Hrs. UNIT – II 1. thMorphology of Bombyx mori: Egg, larva (Newly hatched and V instar), pupa and moth. Ltfe cycle of silkworm Bombyx mori L. 15. • The silk solidifies when it comes in contact with the air. Biology of silkworm Bombyx mori - Life cycle of Bombyx mori. External Features 4. Biology, nature of damage and other hosts of Dermistes spp. Economic Importance 6. 14. In this article we will discuss about the biology and life cycle of bombyx mori. The larva of Bombyx mori, commonly called a silkworm, is host specific to mulberry. : its preventions through physical, mechanical and chemical means, integrated management of the pest. History of Mulberry Silkworm: Bombyx mori is popularly called the Chinese silkworm or Mulberry silkworm moth. Recently, it has become possible to study the phylogeny at the level of nucleic acid, protein and terminal product, owing to rapidly developed molecular biology. Biology of Bombyx Mori: The mulberry silk moth, Bombyx mori belongs to the family Bombycidae. 16. And moultinism – popular mulberry silkworm varieties of Karnataka and India ' popular silkworm and. The importance of silkworm like Pantatomid bug about one sixth of human being of a begins. 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