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Abstract
Eri Silkworm (Philosamia ricini) is a delicate, domesticated insect which cannot tolerate diurnal and seasonal fluctuations in the environmental condition. The life cycle of silkworm is influenced by bio-ecological stress during larval period. Deviations in humidity and temperature levels below and above certain critical limits affect larval growth and development of Eri silkworm. In present study, several experiments were performed in four temperatures 20±3ºC, 24±3ºC, 28±3ºC and 32±3ºC each with three relative humidity 50%, 70% and 90% on rearing of Eri silkworm (Philosamiaricini) to study the effect of temperature and relative humidity on larval, cocoon and grainage parameter.Our findings clearly indicated that the 28±3ºC temperature and 70% relative humidity are the best for larval, cocoon and grainage parameter of Eri silkworm (Philosamia ricini).
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References
- Anonymous. 1987. Annual Report Central Sericultural Research and Training Institute, Mysore. p: 40
- Basaiah, J.M.M. 1988. Consumption and utilization of castor and tapioca by Eri silkworms Samia Cynthia riciniBoisd. -M.Sc. (Seri.), Thesis UAS Bangalore. P. 111.
- Choudhary, S.N. 1982. Eri Silk industry. Published by Directorate of Sericulture and weaving Government of Assam. pp. 16-25.
- Krishna Rao, J.V. 2003.Large scale development of Ericulture in India.Indian Silk, 42 (1): 27-29.
- Krishnaswami, S., Narasimhanna, M.N. and Suryanarayana, S.K. 1973.Sericulture Manual 2.Silkworm Rearing.FAO Agric. Serv. Bull. Rome, 15: 1–131.
- Kshama Giridhar.; Mathanta, J. C. and Deole, A. L., 2007. Raw silk production 2006-07.Indian Silk. 46 (6): 43-44.
- Mubashar Hussain.; Sheikh Ahmad Khan.; Muhammad Naeem and Ata-Ul-Mohsin. 2011. Effect of relative humidity on factors of seed cocoon production in some inbred silk worm (Bombyxmori) Lines, International Journal of Agriculture and Biology .13 (1) 57-60.
- Pandey Priyanka.; Tripathi, S.P. and Shrivastav, V.M.S. 2006.Effect of ecological factors on larval duration of Bombyxmorilinn.Journal of Ecophysiology and Occupation Health ,Volume issue 3&4.
- Pandey, P. and Tripathi, S.P. 2008. Effect of humidity in the survival and weight of Bombyx moriL. Larvae.Malays. Appl. Biol., 37: 37–39.
- Pandey, R.K. 1995. Do leaf tannins affect Non-mulberry silkworm. Indian Silk, 34(8):21-23.
- Gohain and R. Borua. 1983. Effect of temperature and humidity on development survival and oviposition in laboratory population of Eri worm, Philosamiaricini (Boisduval) (Lepidoptera; saturniidae) Archives of Physiology and Biochemistry, volume 91, issue 2 July 1983, pages 87-93.
- Rajesh Kumar and S.K.Gangwar. 2010. Impact of varietal feeding on Samiaricini DONOVAN in spring autumn season of Uttar Pradesh ARPN Journal of Agriculture and Biological Science 5(3).
- Ray, B.C.; Chakravarty, R.; Kar, N.B.; Das, N.K.; Sengupta, A.K. and Sarkar, A. 2006. Ericulture in West Bengal and its introduction in the plains. Indian silk. (10):19-23.
- Reddy, D.N.R.; Baruah, A.M. and Reddy R.N. 1998. Effective utilization of Eri silkworm wastes. Proceeding of the Third International Conference on wild silk moths.pp.278-280
- Sahu, M.; Bhuyan, N. and Das, P.K. 2006. Eri silkworm, Samiaricini (Lepidoptera: Saturniidae) Donovan, Seed production during summer in Assam. In: Proceeding of Regional seminar on “Prospects & problems of sericulture as an economic enterprise in North West India, Dehradun, India. 490-493.
- Sarkar, D.C. 1980. Ericulture in India, 1st Ed. Central Silk Board, Bombay, pp. 51.
- Sugai, E. & Takashashi, T. 1981. High temperature environment at the spinning stage and sterilization in the males of the silkworm Bombyxmori L., J.Sci.Japan, (50):65-69.
- Ullal, S.R. and Narasimhanna, M.N. 1987.Handbook of practical Sericulture, 3rd Ed. Central Silk Board, Bangalore, p. 166.
References
Anonymous. 1987. Annual Report Central Sericultural Research and Training Institute, Mysore. p: 40
Basaiah, J.M.M. 1988. Consumption and utilization of castor and tapioca by Eri silkworms Samia Cynthia riciniBoisd. -M.Sc. (Seri.), Thesis UAS Bangalore. P. 111.
Choudhary, S.N. 1982. Eri Silk industry. Published by Directorate of Sericulture and weaving Government of Assam. pp. 16-25.
Krishna Rao, J.V. 2003.Large scale development of Ericulture in India.Indian Silk, 42 (1): 27-29.
Krishnaswami, S., Narasimhanna, M.N. and Suryanarayana, S.K. 1973.Sericulture Manual 2.Silkworm Rearing.FAO Agric. Serv. Bull. Rome, 15: 1–131.
Kshama Giridhar.; Mathanta, J. C. and Deole, A. L., 2007. Raw silk production 2006-07.Indian Silk. 46 (6): 43-44.
Mubashar Hussain.; Sheikh Ahmad Khan.; Muhammad Naeem and Ata-Ul-Mohsin. 2011. Effect of relative humidity on factors of seed cocoon production in some inbred silk worm (Bombyxmori) Lines, International Journal of Agriculture and Biology .13 (1) 57-60.
Pandey Priyanka.; Tripathi, S.P. and Shrivastav, V.M.S. 2006.Effect of ecological factors on larval duration of Bombyxmorilinn.Journal of Ecophysiology and Occupation Health ,Volume issue 3&4.
Pandey, P. and Tripathi, S.P. 2008. Effect of humidity in the survival and weight of Bombyx moriL. Larvae.Malays. Appl. Biol., 37: 37–39.
Pandey, R.K. 1995. Do leaf tannins affect Non-mulberry silkworm. Indian Silk, 34(8):21-23.
Gohain and R. Borua. 1983. Effect of temperature and humidity on development survival and oviposition in laboratory population of Eri worm, Philosamiaricini (Boisduval) (Lepidoptera; saturniidae) Archives of Physiology and Biochemistry, volume 91, issue 2 July 1983, pages 87-93.
Rajesh Kumar and S.K.Gangwar. 2010. Impact of varietal feeding on Samiaricini DONOVAN in spring autumn season of Uttar Pradesh ARPN Journal of Agriculture and Biological Science 5(3).
Ray, B.C.; Chakravarty, R.; Kar, N.B.; Das, N.K.; Sengupta, A.K. and Sarkar, A. 2006. Ericulture in West Bengal and its introduction in the plains. Indian silk. (10):19-23.
Reddy, D.N.R.; Baruah, A.M. and Reddy R.N. 1998. Effective utilization of Eri silkworm wastes. Proceeding of the Third International Conference on wild silk moths.pp.278-280
Sahu, M.; Bhuyan, N. and Das, P.K. 2006. Eri silkworm, Samiaricini (Lepidoptera: Saturniidae) Donovan, Seed production during summer in Assam. In: Proceeding of Regional seminar on “Prospects & problems of sericulture as an economic enterprise in North West India, Dehradun, India. 490-493.
Sarkar, D.C. 1980. Ericulture in India, 1st Ed. Central Silk Board, Bombay, pp. 51.
Sugai, E. & Takashashi, T. 1981. High temperature environment at the spinning stage and sterilization in the males of the silkworm Bombyxmori L., J.Sci.Japan, (50):65-69.
Ullal, S.R. and Narasimhanna, M.N. 1987.Handbook of practical Sericulture, 3rd Ed. Central Silk Board, Bangalore, p. 166.