Anoxia hormesis in cactus moth

As part of Sterile Insect Technique (SIT) programs, irradiation can effectively induce sterility in insects by damaging germline genomic DNA. However, irradiation also induces other off-target side effects that reduce the quality and performance of sterilized males, including the formation of damaging free radicals that can reduce sterile male performance. Thus, treatments that reduce off-target effects of irradiation on male performance while maintaining sterility can improve the feasibility and economy of SIT programs. We previously found that inducing a form of rapid, beneficial plasticity with a one-hour anoxic conditioning period (physiological conditioning hormesis) prior to and during irradiation improves male field performance in the laboratory while maintaining sterility in males of the cactus moth, Cactoblastis cactorum. Here we extend this work by testing the extent to which this beneficial plasticity may improve male field performance in the field. Based on capture rates aft...

作为昆虫不育技术（Sterile Insect Technique, SIT）项目的组成部分，辐照可通过破坏昆虫生殖系基因组DNA，有效诱导昆虫不育。但辐照同时会引发多种脱靶副作用，降低不育雄虫的品质与田间表现能力，其中包括生成具有损伤性的自由基，进而削弱不育雄虫的竞争力。因此，若能在维持雄虫不育效果的前提下，减轻辐照对其表现的脱靶影响，便可提升SIT项目的可行性与经济效益。我们此前的研究发现，在辐照前及辐照过程中，通过1小时的缺氧处理诱导快速有益的可塑性反应（条件性生理兴奋效应，physiological conditioning hormesis），可在维持仙人掌螟（Cactoblastis cactorum）雄虫不育性的同时，提升其实验室环境下的田间表现能力。本研究在此基础上，进一步测试该有益可塑性反应对雄虫实际田间表现的提升程度。基于捕获率aft...