作　　者： ; ; (赵小奎）;

机构地区： 中山大学生命科学学院

出　　处： 《中国核科技报告》 1998年第1期108-116,共9页

摘　　要： 翡翠贻贝(Perna viridis)的个体大小对放射性核素^(125)Ⅰ在其体内的积累与分布影响显著。实验结果表明,小个体对^(125)Ⅰ的浓集能力比大个体强。在贝体各部分中,足丝对^(125)Ⅰ的浓缩因子(约0.5×10~3～1.5×10~3)比其他部分高得多,为软体组织的30～200倍,为足的200～600倍,为贝壳的600～1000倍。足丝的湿重虽不及整体湿重的1％,但积累的^(125)Ⅰ占贝体总量的一半以上,甚至可高达75％。足丝对^(125)Ⅰ的浓缩因子与贻贝整体湿重(或壳长)呈负的幂指数关系。 Effect of body size on accumulation and distribution of 125I in the green mussel (Perna viridis), has been studied. The results showed that concentration capacity of every part in smaller mussels was higher than that in larger ones. Concentration factors of 125I in byssus (about 0. 5 X 103-1. 5 X 103), the highest in all parts of the mussels, were 30-200 times as that in soft tissues, 200~600 times as that in feet, 600 -1000 times as that in shells. Although wet weight of byssus was no more than 1 % of whole body’s wet weight, the content of 125I accumulated in it accounted for as high as 75% of total 125I content. The relationship between concentration factor of 125I in byssus and whole body’s wet weight (or shell length) can be dis-cribed as a negative power function.

关 键 词： 积累与分布 翡翠贻贝 个体大小 整体湿重 英文 生命科学学院 浓缩因子 实验室 放射性核素

领　　域： [核科学技术]