Early and Uniform Maturation in Silkworm Bombyx mori L. by Phytoecdysteroid Extracted from a Plant of Family Caryophyllaceae

  • Trivedy, Kanika (Central Sericultural Research and Training Institute) ;
  • Nair, K.Sashindran (Central Sericultural Research and Training Institute) ;
  • Ramesh, M. (Central Sericultural Research and Training Institute) ;
  • Gopal, Nisha (Central Sericultural Research and Training Institute) ;
  • Kumar, S.Nirmal (Central Sericultural Research and Training Institute)
  • Published : 2003.09.01

Abstract

One of the biggest problems encountered during the last phase of silkworm rearing is non-uniform maturation of the silkworms especially during cooler months. Phytoecdysteroid (20-hydroxy ecdysone) was extracted in large-scale from a plant belongs to Caryophyllaceae and fed to silkworm larvae to test the effect of phytoecdysteroid. About 80% of the silkworms were ready for mounting by 18 hrs after treatment (when the treatment is done for uniform spinning), whereas in control batch only 37% worms were ready for mounting by the same time.

Keywords

References

  1. Anantharaman, K. V., G. R. Shivakumar and R. K. Datta(1996) Phytoecdysteroid effect on maturation in silkworm, Bombyx mori L. Insect Envt. 2, 21-22
  2. Banerjii, A., G. J. Chintalwar, N. K. Joshi and M. S. Chadha(1971) Isolation of ecdysterones from Indian plants. Phy-tochemistry 10, 2225-2226
  3. Chandrakala, M. V., V. G. Maribashetty and H. K. Jyothi(1998) Application of phytoecdysteroids in sericulture. Curr.Sci. 74, 341-346
  4. Chou, W. S. and H. S. Lu (1980) Growth regulation and silkproduction in Bombyx mori L. from Phytogenous ecdys-teroids; in Progress in ecdysone research. Hoffmann, J. A.(ed.), pp. 281-297, Elsevier/North Holland BiomedicalPress, New York
  5. Grieneisen, M. L. (1994) Recent advances in our knowledge ofecdysteroid biosynthesis in insects and crustaceans. InsectBiochem. Molec. Biol. 24, 115-132
  6. Hoffmann, J. A. and C. Hetru (1983) Ecdysone; in Endocrinol-ogy of insects. Downer, R. G. H. and H. Laufer (eds.), pp. 6588, Alan R. Liss Inc., New York
  7. Krisnaswamy, S. (1978) New technology of silkworm rearing.Bull. Cent. Seric. Res. Training Institute India 2, 1-24
  8. Li, X., J. Zhu and S. Hui (1992) Studies on improving themounting rate of partitioner cocooning frame by usingecdysone. Bull. Seric. 23, 23-26
  9. Maribashetty, V. G., M. V. Chandrakala and H. K. Jyothi(1997) Phytoecdysteroid and their application in sericulture.Bull. Seric. Res. 8, 43-47
  10. Novak, V. J. A. (1975) Insect hormones. Chapman and Hall, London
  11. Sehnal, F. (1989) Hormonal role of ecdysteroids in insect lar-vae and during metamorphosis; in Ecdysone from Chemistryto Mode of Action. Koolman, J. (ed.), pp. 271-278, ThiemeMedical Publishers, New York
  12. Shirai, Y., Y. Aizono, T. Iwasaki, A. Yanagida, H. Mori, M.Sumida and F. Matsubara (1992) Prothoracicotropic hor-mone is released five times in 5th larval instar of silkworm,Bombyx mori. J. Insect Physiol. 39, 83-88 https://doi.org/10.1016/0022-1910(93)90021-I
  13. Shivkumar, G. R., K. V. Ananthraman, S. B. Magadum, R. K.Datta, S. S. Hussain, A. Banerji and S. K. Chowdhary (1995)Effect of phytoecdysteroid on larval maturation and eco-nomic parameters of the silkworm, Bombyx mori L. Indain J.Seric. 34, 46-49
  14. Shivkumar, G. R., K. V. Anantharaman, S. B. Magadum, R. K.Datta, S. S. Hussain, A. Banerji and S. K. Chowdhary (1996)Effect of phytoecdysteroids on the spinning, cocoon andreeling parameters of the silkworm, Bombyx mori L. Allelop-athy J. 3, 71-76
  15. Slama, K., N. K. Abubakirov, M. B. Gorovits, U. A. Baltaevand Z. Saatov (1993) Hornonal activity of ecdysteroids fromcertain Asiatic plants. Insect Biochem. Molec. Biol. 23, 181-185 https://doi.org/10.1016/0965-1748(93)90099-E
  16. Trivedy, K., K. S. Nair and P. K. Chinya (1998) Use Of phyto-ecdysteroid for synchronization of spinning activities in Silk-worm. Annual Report, CSRTI, Mysore, pp. 60-61