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采用9MeV X-射线辐照处理云杉小墨天牛45、龄幼虫和雌虫,结果表明,辐照能明显影响其发育和繁殖能力,导致幼虫期延长,幼虫不能化蛹或羽化1,00%阻止幼虫化蛹和羽化的最低吸收剂量分别为45～60Gy、35～40Gy;阻止田间雌虫繁殖F1代幼虫的不育剂量为140Gy,雌雄两性成虫同时辐照的不育剂量小于60Gy。为此,可分别采用60Gy和140Gy处理原木及木质包装中云杉小墨天牛幼虫和成虫,以防止其扩散和传播。
The 45-instar larvae and females of P. sphaeroides were treated with 9 MeV X-ray radiation. The results showed that irradiation could significantly affect their ability of development and reproduction, prolonged the larval period, and the larvae could not pupate or emerge 1,00 The minimum absorbed dose to prevent pupation and emergence of larvae was 45 ~ 60Gy and 35 ~ 40Gy, respectively. The infertility dose that prevented field females from breeding F1 generation larvae was 140Gy, and that of male and female adults was less than 60Gy. To this end, larvae and adults of P. sphaeroides can be treated with 60Gy and 140Gy, respectively, in logs and wood packaging to prevent their spread and spread.