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 Type
Article
How to Cite this Article
Ahmad, T. R.; Hamad, B. Sh.; and Barkhi, G. S.
(2007)
"Effect of Gamma Radiation on Sterility, Sexual Competitiveness and Mating Ability of Carob Moth Ephestia calidella (Guen.)Irradiated as Pupae,"
Baghdad Science Journal: Vol. 4:
Iss.
4, Article 24.
DOI: https://doi.org/10.21123/bsj.2007.11869
