论文部分内容阅读
用浓度为 ５００ ｍｇ／ｋｇ灭幼脲（ＤＦＢ）处理的构树枝条喂养桑天牛成虫，测定桑天牛每天取食量、虫粪量，不同时间对桑天半成虫每天虫粪、血淋巴及所产的卵中天幼脲含量进行ＨＰＬＣ检测。结果表明，桑天牛成虫每天摄入的天幼脲中，大部分排出体外且结构不变，雌、雄成虫排出量占摄入量分别为80．７４％及７６．４８％；灭幼脲在桑天牛成虫体内还有累积作用，连续饲喂以ＤＦＢ处理的枝条，10ｄ后桑天牛成虫血淋巴中ＤＦＢ含量高达雌虫１９．５４９×10－6ｇ／头，雄虫 １７． ８２３ × １０－6 ｇ／头；而雌成虫每天摄入ＤＦＢ量的 １． ３９％转移到卵中。
The adults of Morus alba were fed on birch branches treated with diflubenzuron (DFB) at a concentration of 500 mg / kg. The daily feed intake and worm feces of Morus alba were measured, and the daily fecal, hemolymph And the produced ovum urea content by HPLC. The results showed that the majority of primulin in adult Morus alba was excreted in vitro and its structure was unchanged, while the intake of male and female adults accounted for 80.74% and 76.48% respectively. There was also a cumulative effect in adult Morus alba adults. The DFB-treated branches were fed consecutively. After 10 days, the DFB content in the hemolymph of adult Morus alba was as high as 19.549 × 10-6 g / head for females and 17 for males. 823 × 10-6 g / head; while adult female adults ingested 1 daily dose of DFB. 39% transferred to the egg.