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Susceptibility of three Eco-races of tropical Tasar silkworm to Antheraea mylitta cytoplasmic polyhedrosis virus (AmCPV) | ||
| Caspian Journal of Environmental Sciences | ||
| مقاله 7، دوره 6، شماره 2، تیر 2008، صفحه 161-165 اصل مقاله (190.42 K) | ||
| نویسندگان | ||
| S.B. Zeya1؛ A.K. Srivastava2؛ B. Prakash2؛ N.G. Ojha3؛ N. Suryanarayana4 | ||
| 1Silkworm Pathology Laboratory, Central Tasar Research and Training Institute, Ranchi - 835 303, India * Corresponding author's E-mail: gpscsbranchi@rediffmail.com | ||
| 2Silkworm Breeding and Genetics Laboratory, Central Tasar Research and Training Institute, Ranchi - 835 303, India | ||
| 3Silkworm Pathology Laboratory, Central Tasar Research and Training Institute, Ranchi - 835 303, India | ||
| 4Central Tasar Research and Training Institute, Ranchi - 835 303, India | ||
| چکیده | ||
| Pathogenic infection in tasar silkworm, Antheraea mylitta Drury. is common and there is a breed specific response regarding tolerance. Observations reveal the possibility of differential response by haemocytes to microbial infection in different breeds. Hence, the susceptibility of three eco-races of tasar silkworm viz. Daba, Sarihan and Raily to Antheraea mylitta Cytoplasmic Polyhedrosis Virus (AmCPV) infection and difference in total haemocyte counts were tested. The survival of Daba, Sarihan and Raily eco-races was significantly different (p < 0.05) when challenged with the same concentration (1 x 105 polyhedra/ml) of AmCPV. Daba eco-race was more tolerant to the AmCPV infection having higher survival (66.7%) and LC50 values (1000893.1796 polyhedra/ml) of AmCPV followed by Sarihan eco-race (50.7% survival and LC50 value of AmCPV 187203.6168 polyhedra/ml.) and Raily eco-race (25.3% survival and LC50 value of AmCPV 5176.37 polyhedra/ml.). Difference in total haemocyte count i.e. higher in tolerant (Daba) and lower in susceptible (Raily) eco-race may be in response to difference to their susceptibility to AmCPV infection. REFERENCES Aizawa, K. (1971) Structure of polyhedra and virus particles of cytoplasmic polyhedrosis, In the cytoplasmic polyhedrosis of the silkworm (Eds: Aruga, H. and Tanada, Y.) Univ. Tokyo press, Tokyo, pp. 23-36. Aratake, Y. (1973) Strain difference in the silkworm, Bombyx mori L. in the resistance to a nuclear polyhedrosis virus. J. Seric. Sci. Jpn. 42, 230-238. Balavenkatasubbaiah, M. Nataraju, B., Thiagrajan, V. and Datta R. K. (2001). Haemocyte counts in different breeds of silkworm, Bombyx mori L and their changes during the progressive infection of BmNPV. Indian J. Seric. 40, 158-162. Butt, M. and Shields S.K. (1996) The structure and behaviour of gypsy moth (Lymantria dispar) haemocytes. J. Inverteb. Pathol. 68, 1- 14. Ennesser, A.C. and Nappi, A.J. (1984). Ultrastructural study of the encapsulation response of the American cockroach Periplanata americana. J. Ultrastruct. Res., 87, 31-45. Gupta, A.P. (1986) Arthropod immunocytes: Identification, structure, functions and analogies to the functions of vertebrate B – and T- lymphocytes. In: Hemocytic and Humoral Immunity in arthropods, A. P. Gupta (Ed.), John Wiley, New York, pp. 3- 59. Gupta, A.P. and Han, S.S. (1988) Arthropod immune system. III. Septate junction in the Singh et al., 165 haemocytic capsule of the German cockroach, Blettella germanica. Tissue & Cell, 20, 629-634. Jonesh, J.C. (1962) Current concepts concerning insect hemocytes Am. Zool. 2, 209-246. Kawakami, K. (1965) Phagocytosis in muscardine diseased larvae of the silkworm, Bombyx mori (Linnaeus). J. Invertebr. Pathol. 7, 203:2088. Ratnasen, Ahsan, M.M. and Datta, R.K. (1999) Induction of resistance to BmDNV into a susceptible bivoltine silkworm breed. Indian J. of Seric. 38(2), 107 – 112. Sahay, D.N., Roy, D.K. and Sahay Alok (2000) Diseases of tropical tasar silkworm, Antheraea mylitta D., Symptoms and control measures, In: Lessons on Tropical Tasar. Ed. By K. Thangavelu, Central Tasar Research and Training Institute, Piska Nagri, Ranchi, 104 p. Singh, G.P., Selvakumar, T., Sharma, S.D., Nataraju, B. and Datta, R.K. (2003) Susceptibility of CSR hybrids of silkworm, Bombyx mori L to two species of Aspergillus fungi. Sericologia. 43, 319-323. Singh, G.P., Mengkui, Xu, Yuyin Chen and Datta, R.K. (2003) Development of Resistance to Bombyx mori Densonucleosis Virus into a susceptible silkworm breed. Int. J. Indust. Entomol. 6, 145-149. Snedecor, G.W. and Cochran W.E. (1995) Statistical Methods. Oxford IHB Publishing Co. New Delhi. pp. 339 – 361. Tauber, O.E. and Yeager, J.E. (1935) On the total blood counts of insects. I. Orthoptera, Odonata, Hemiptera and Homoptera. Ann. Entomol. Soc. Am. 28, 229-240. Uzigawa, K. and Aruga H. (1966) On the selection of resistant strains of infectious flecherie virus in the silkworm, Bombyx mori L., J. Seric sci. Jpn. 35,23-26. Watanabe, H. (1967) Development of resistance in silkworm, Bombyx mori to peroral infection of a cytoplasmic polyhedrosis virus. J. Invertibr. Pathol. 9, 474- 479. | ||
| کلیدواژهها | ||
| Antheraea mylitta؛ Am CPV؛ Haemocytes؛ Tolerance | ||
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