Journal
FRONTIERS IN PHYSIOLOGY
Volume 13, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fphys.2022.947848
Keywords
Spodoptera litura; sterile insect technology; X-ray; radiation biology; release ratios
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Funding
- Ministry of Industry and Information Technology of China
- China National Tobacco Corporation Science and Technology [110201901039]
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This study analyzed the effects of X-ray irradiation on Spodoptera litura and found that the irradiation dose significantly affected its reproductive ability. This research provides a theoretical foundation for using radiation sterilization technology to control S. litura.
Spodoptera litura is an omnivorous pest that has spread globally. Because irradiation sterilization technology has a great potential for control of S. litura, the effect of 25-150 Gy doses of X-rays on pupal survival, flight and reproductive variables of adult moths were analyzed in this research. The X-ray irradiation with the dose of 25-150 Gy significantly affected the reproductive ability of females. Irradiating male pupae with 25-150 Gy doses of X-rays had no effect on mating, life span, or flight ability of adult moths, but significantly reduced survival and fecundity of their offspring, and the sterility rate of the F-1 generation was 52.65%-99.9%. The results of logistic curve fitting showed that the sterility impact was 84% at the most appropriate irradiation dose (71.26 Gy). The sterility control was 91% in an indoor mating competition experiment when the release ratio of irradiated males (75 Gy) to nonirradiated males reached 12.6:1. The effects of X-ray irradiation doses on biological variables of S. litura and the most effective release ratio determined here provide a theoretical foundation for using radiation sterilization technology to control S. litura.
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