菲律宾蛤仔在高浓度锌铅水体中的金属积累

双壳类软体的菲律宾蛤仔在高浓度Ｚｎ、ＰＢ（１－９ｍｇ／ｄｍ＾２）实验水体中短期（９６ｈ）暂养。测定了菲律宾蛤仔锶和软体部（除鳃以外的软体部，下同）的Ｚｎ、Ｐｂ含量。单项金属积累实验结果表明，菲律宾蛤仔鳃和软体部Ｚｎ、Ｐｂ含量随实验水体中Ｚｎ、Ｐｂ离子浓度的增加而增加，但鳃对Ｚｎ、Ｐｂ的积累量总是软体部高。这与两各器官的生理特性相一致。鳃是呼吸器官，与水体接触最为频繁，血液流经量大；软体部含内脏和肌

Metal-accumulation of Ruditapes philippinarum in high zinc and lead experimental waters

Ruditapes philippinarum (Bivalvia) was exposured at high zinc and lead level (1~9mg/dm3). The contents of Zn and Pb at gill and soft parts were determined. One metal experimental results showed that the higher level zinc and lead at experimental waters, themore zinc and lead were accumulated by R. philippinarum. Gill was always higher accumulation than soft parts. This phenomenon is accord with their physiological characteristics. Gillis a respiratory organ and always expoces and more blood passes gill than soft parts. Experiment for two metals showed gill and soft parts of R. philtheinarum would limit the accumulation when zinc and lead level approaches its 96h LD50 values,showing that gill and soft partsof R. philippinarum have functions to accumulate and exclude zinc and lead actively. Zinc andlead show limiting interactions when they are at high levels.