Effect of Gamma Radiation on Sterility, Sexual Competitiveness and Mating Ability of Carob Moth Ephestia calidella (Guen.)Irradiated as Pupae
Main Article Content
Abstract
When mature pupae (2 days before eclosion) of Ephestia calidella (Guen.) were irradiated with the doses of 0, 100, 200, 300 and 400 Gy, the males had a high level of sterility which was 92% at 300 Gy, but it was not significantly different from those treated with 200 and 400 Gy respectively. Furthermore,a high level of sterility (100%) was obtained for female pupae treated with 400 Gy. Meanwhile, when both males and females irradiated as pupae (2 days before eclosion) with 200, 300 and 400 Gy showed a high level of sterility which was 94.4, 98.2 and 99.6%, respectively. It is evident that females were less radio-resistant than males. When males from irradiated pupae at different doses added to untreated adult at ratio of (3:1:1) irradiated males :unirradiated males: unirradiated females the percentage of egg hatch decreased from 76.4% in the control to 36.3% at the dose of 400 Gy. However, sexual competitiveness value and inseminate female irradiated as pupae reduced with increasing doses.
Article Details
This work is licensed under a Creative Commons Attribution 4.0 International License.
How to Cite
References
Ahmad, T. R. (1985). Susceptibility of different varieties of dates to carob moth Ephestia calidella (Guen.) in middle of Iraq. J. Agric. and Water Reso. Res. 4(4): 11-20.
Ahmod, M. Y. Y.; J. H. Brower and E. W. Tiltion. 1976. Sexual competitiveness of adult Indian Meal Moths Irradiated as mature pupae. J. Econ. Ent. 69: 719-721.
Ahmed, M. S. H. ;Al-Hakkak , Z.S. and Al-Saquar, (1972). Inherited sterility in the fig moth Carda (Ephestid) cautella Walker. In Conf. Proc. Peaceful uses of atomic energy PP.383-389, Geneva. 1971 IAEA,Vienna.
AL-Azawi, A. F. (1980). General and applied entomology. 1st ed. University of Baghdad.
Al-Taweel, A. A.; Ahmed,M.S.H.; Kadhum,S.S., Hameed,A.A. and Nasser, M.J. (1989). Inherited sterility in different strains of Ephestia cautella :Insect. Sc.Applic. 10: 436-469
Barbulescu,A. and Rosca, I. (1993). Possibilites of using radiation induced F1 sterility control of European corn borers in Ranania . In radiation induced F1 sterility in Lepidoptera for area-wide control, pp.101-115. IAEA. Vienna.
Chung, S. L.; H. Tashior, and L. M. Massey, JR. 1971. Gamma irradiation of the European chafor. 3. Longevity, flight behavior and mating competitiveness of steril males, with observations on Reproductive biology. J. Econ. Ent. 64: 883-886.
Fried, M. 1971. Determination of steril-insect competitiveness. J. Econ. Ent. 64: 869-872.
Hathaway, D. O. 1966. Laboratory and filed cage studies of the effects of gamma radiation on codling moth. J. Econ. Ent. 59: 55-37.
Hooper, G. H. S. 1971. Competitiveness of gamma sterilized males of the Mediterranean fruit fly: effect of irradiating pupae or adult stage and of irradiating pupae in nitrogen. J. Econ. Ent. 1364-8.
Hooper, G. H. S., and K. P. Katiyar. 1971. Competitiveness of gamma-sterilized males of the Mediterranean fruit fly. Ibid. 64: 1068-71.
Hussain, A. A. 1985. Date palms and date with their pests in Iraq. Basrah Univ. Press, 456pp. In Arabic.
Li, Y.Y.; Zhang, H.O., Lov, H.Z. and Zhao, C.D. (1988). The inherited sterility of the corn borer Ostmafurnacalis Guen, IAEA-Sm . 13: 303-311.
Katiyar, K. P., and E. Ramirez. 1970. Sterilization of the Mediterranean fruit fly and its application of Nuclear Energy Agriculture, Ann. Rep. 1 July 1970 of Inter-American Inst. Of Agriculture Science of OAS Turyiolbar, Costa Rica.