摘要
双壳类软体动物菲律宾蛤仔（Ruditapesphilippinarum）在高浓度Zn、Ph（1～9mg／dm3）实验水体中短期（96h）暂养。测定了菲律宾蛤仔鳃和软体部（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离于浓度的增加而增加。但鳃对Zn、Pb的积累量总是较软体部高。这与两种器官的生理特性相一致。组是呼吸器官，与水体接触最为频繁，血液流经量大；软体部会内脏和肌肉等，血液流经量大于鳃。两种金属混合实验表明，水作中Zn、Pb迭加浓度接近菲律宾蛤仔的半致死浓度时，菲律宾蛤仔鳃和软体部会抑制对Zn、Pb的积累，甚至排出Zn、Pb。这表明菲律宾蛤仔鳃和软体部有主动积累和排出Zn、Pb的功能；另一方面，Zn、Pb也存在着相互抑制的作用。
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.
出处
《台湾海峡》
CAS
CSCD
1998年第4期456-461,共6页
Journal of Oceanography In Taiwan Strait
基金
国家自然科学基金!49356001
关键词
菲律宾蛤仔
锌
铅
鳃
水体
金属积累
Ruditapes philippinarum, Pb, Zn, gill, soft part, accumulation
