International Journal of Industrial Entomology and Biomaterials

Korean Society of Sericultural Science (한국잠사학회)
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Effect of Phytoecdysteroid on Pure Breed Performance of Silkworm Bombyx mori L.

  • Trivedy, Kanika (Central Sericultural Research and Training Institute) ;
  • Dhar, Anindita (Central Sericultural Research and Training Institute) ;
  • Kumar, S.Nirmal (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)
  • Published : 2003.09.01
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Abstract

Phytoecdysteroids with moulting hormone (MH) activity induce different responses in silkworms when used on different day of final instar, which can be manipulated for maximum benefit like early and uniform spinning behaviour, reducing crop loss and to increase cocoon yield. The results showed that application of this hormone on seed crop viz., CSR2, CSR4 and BL44 and BL67 in early stage of 5$^{th}$ instar i.e., at 72 hrs and 96 hrs though induced early and uniform spinning behaviour, there was an adverse effect by 9-36% on the economic characters like cocoon yield, cocoon weight, cocoon shell weight and also on fecundity etc. Application of this hormone in late stage of $5^th$ instar i.e., at the onset of spinning showed non-significant variations in some of the characters like cocoon weight, cocoon shell weight, cocoon shell ratio and fecundity. The physiological implications of phytoecdysteroid in hastening the maturation events and synchronization of spinning activities in different breeds are discussed.

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 https://doi.org/10.1038/nm0196-21
  2. Chemysh, S. I., V. L. Lukhtanov and N. P. Simonenko (1983) Adoption to damage in the silkworm, Bombyx mori (Lepidoptera:Bombycidae) 2. Effect of ecdysterone and some other adoptogens on the tolerance of the caterpillars to entobacterin. Entomol. Obozr. 62, 665-672.
  3. Chou, W. S. and H. S. Lu (1980) Growth regulation and silk production in Bombyx mori L., from Phytogenous ecdysteroids; in Progress in ecdysone research. Hollmand, J. A. (ed.) pp. 281-297, Elsevier/North Holland Biomedical Press, New York
  4. Dai, Y J., R. Li and Y. Q. Zhang (1985) Moulting hormone and silk protein synthesis: Effect of ecdysone on nucleic acid metabolism in the posterior portion of silk gland in Bombyx mori. Acta. Entomol. Sinica. 28, 8-14
  5. Hou, R F. and J. C. Yang (1990) Suppression of nuclear polyhedrosis virus infection by $\beta$ ecdysone in the silkworm. Bombyx mori L. Academia Sinica. 29, 21-27
  6. Ito, T., Y. Horie and K. Watanabe (1970) Effect of phytoecdysone on the length of the $5^{th}$ instar and the quality of cocoon in silkworm. Bombyx mori. Ann. Zool. Jpn. 43, 175-181
  7. Kajiura, Z. and O. Yamashita (1992) Induction of metamorphosis of the methoprene induced dauer larvae of silkworm Bombyx mori by ecdysteroids. Comp. Biochem. Physiol. 101A, 277-280
  8. Kobayashi, M. (1978) Insect Endocrinology; in The Silkworm: An Important Laboratory Tool. Tazima, Y (ed.) pp. 159-187, Kodansha Ltd., Tokyo
  9. Krishnaswami, S. (1994) A practical guide to mulberry silk cocoon production in tropics. Srirampala Sericulture Consultants, Bangalore. pp. 47-68
  10. Li, x., J. Zhu and S. Hui (1992) Studies on improving the mounting rate of partitioner cocooning frame by using ecdysone. Bull. Seric. 23, 23-26
  11. Liu, H. S. and R. F. Hou (1985) Studies on inhibition of infection with nuclear polyhedrosis virus by an ecdysteroid containing agent in the silkworm, Bombyx mori L. Chinese J. Entomol. 5, 23-30
  12. Ninagi, O. and M. Maruyama (1996) Utilization of 20-hydroxyecdysone extracted from a plant in sericulture. JARQ 30, 123-128
  13. Prakash, A. and S. Ghosal (1979) Phytoecdysones. J. Sci. Indust. Res. 38, 632-647
  14. Sehnal, F. (1989) Hormonal role of ecdysteroids in insect larvae and during metamorphosis; in Ecdysone: From Chemistry to Mode of Action. KooIman, J. (ed.) pp. 271-278, Thieme Medical Publishers, New York
  15. Shirai, Y, Y. Aizono, T. Iwasaki, A. Yanagida, H. Mori, M. Sumida and F. Matsubara (1992) Prothoracicotropic hormone 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
  16. Sehnal, F. and H. Akai (1990) Insect silk glands: Their types, development and function and effects of environmental factors and morphogenetic hormones on them. Int. J. Insect Morphol. Embryol. 19,79-132 https://doi.org/10.1016/0020-7322(90)90022-H
  17. 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 economic parameters of the silkworm, Bombyx mori L. Indian J. Seric. 34,46-49
  18. 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 and reeling parameters of the silkworm, Bombyx mori L. Allelopathy J. 3,71-76.
  19. Sudo, M and H. Akai (1988) Induction of spinning from nonspinning larvae reared with an artificial diet by administration of molting hormone. J. Seric. Sci. Jpn. 57, 405-408
  20. Trivedy, K., S. Nair and P. K. Chinya, (1998) Annual Report, CSRTI, Mysore, India, pp. 76