黄粉虫幼虫对硒的生物积累
The selenium bioaccumulation of Tenebrio molitor larva
高红莉；周文宗**；张 硌；李洪涛
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DOI：
作者单位：河南省科学院地理研究所 郑州 450052
中文关键词：黄粉虫幼虫, 生物积累, 硒元素, 生物积累系数
英文关键词：Tenebrio molitor larva, bioaccumulation, selenium element, bioaccumulation coefficient
中文摘要：在饲料中添加含硒化合物喂养黄粉虫Tenebrio molitor L. 幼虫, 测定幼虫硒含量、粪便硒含量和体重的变化, 计算黄粉虫幼虫特定生长率及幼虫对硒生物积累系数, 分析黄粉虫有效积累硒的条件。结果表明, 饲料硒含量在15~ 20 mgPkg 时, 幼虫硒含量明显提高, 对硒的生物积累系数高于其它试验组水平, 饲料硒含量过高, 幼虫硒含量降低, 正常生长受到抑制。黄粉虫幼虫特定生长率、取食量、排粪量、干物质含量随着饲料硒含量的增加而降低, 死亡率、粪便硒含量随着饲料硒含量的增加而增大。饲料硒含量为15~ 20 mgPkg 时黄粉虫幼虫对硒的生物积累效果最好。
英文摘要：After larvae of Tenebrio molitor L. were fed on the diet with selenium compound, their weights, the concentration of selenium in larva and in their faeces were measured, and the special growth rate and the bioaccumulation factor ( BAF) of selenium of the larvae were calculated to analyze the conditions of selenium accumulating effectively in larvae. The results showed that when the selenium concentration in diet was 15~ 20 mgP kg , the concentration of selenium in larvae and the BAF of selenium of larvae were obviously higher than those in the other groups. When the concentration of selenium in diet was higher than this level, the concentration of selenium in larvae decreased, and the normal larval growth was restrained. With the selenium concentration increased in diet, the special growth rate, the food consumption, the faeces amount, and the dry material content of larvae decreased, and the mortality of the larvae, the selenium concentration in faeces increased. . The selenium bioaccumulation in larvae was best when the selenium concentration in diet was 15~ 20 mgPkg.