Sterility of Cydia pomonella by X ray irradiation as an alternative to gamma radiation for the sterile insect technique
文献类型: 外文期刊
作者: Zhang, Jing-Han;Li, Na;Zhao, Hui-Yuan;Wang, Ya-Qi;Yang, Xue-Qing;Wu, Kong-Ming
作者机构:
关键词: Cydia pomonella;fecundity;irradiation;sterile insect technique;sterility
期刊名称: BULLETIN OF ENTOMOLOGICAL RESEARCH
ISSN: 0007-4853
年卷期: 2022 年
页码:
收录情况: SCIE(2022版)
摘要: The codling moth Cydia pomonella is a major pest of global significance impacting pome fruits and walnuts. It threatens the apple industry in the Loess Plateau and Bohai Bay in China. Sterile insect technique (SIT) could overcome the limitations set by environmentally compatible area-wide integrated pest management (AW-IPM) approaches such as mating disruption and attract-kill that are difficult to suppress in a high-density pest population, as well as the development of insecticide resistance. In this study, we investigated the effects of X-ray irradiation (183, 366, 549 Gy) on the fecundity and fertility of a laboratory strain of C. pomonella, using a newly developed irradiator, to evaluate the possibility of X-rays as a replacement for Cobalt(60) (Co-60-gamma) and the expanded future role of this approach in codling moth control. Results show that the 8(th)-day is the optimal age for irradiation of male pupae. The fecundity decreased significantly as the dosage of radiation increased. The mating ratio and mating number were not influenced. However, treated females were sub-sterile at a radiation dose of 183 Gy (20.93%), and were almost 100% sterile at a radiation dose of 366 Gy or higher. Although exposure to a radiation dose of 366 Gy resulted in a significant reduction in the mating competitiveness of male moths, our radiation biology results suggest that this new generation of X-ray irradiator has potential applications in SIT programs for future codling moth control.
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