JUVENILE FRESH-WATER MUSSEL (BIVALVIA, UNIONIDAE) RESPONSES TO ACUTE TOXICITY TESTING WITH COPPER

被引:32
作者
JACOBSON, PJ
FARRIS, JL
CHERRY, DS
NEVES, RJ
机构
[1] ARKANSAS STATE UNIV, DEPT BIOL SCI, STATE UNIV, AR 72467 USA
[2] VIRGINIA POLYTECH INST & STATE UNIV, US FISH & WILDLIFE SERV, BLACKSBURG, VA 24061 USA
关键词
FRESH-WATER MUSSELS; JUVENILES; COPPER; ACUTE TOXICITY;
D O I
10.1002/etc.5620120512
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The sensitivities of newly metamorphosed juveniles of Villosa iris and Anodonta grandis to copper were determined using 24-h static bioassays. Two methods of assessing postexposure response were compared: direct visual examination and the use of vital staining with neutral red. Both species responded to copper exposures, exhibiting valve closure at concentrations as low as 24 mug Cu per liter for Villosa iris and 17 mug Cu per liter for Anodonta grandis. EC50 values of 27 mug Cu per liter (Villosa iris) and 33 mug Cu per liter (Anodonta grandis) were calculated on the basis of the valve closure response. Use of vital staining with neutral red provided an EC50 of 29 mug Cu per liter for Villosa iris. The amber coloration of Anodonta grandis valves prevented determination of an EC50 using the vital staining. LC50 values of 83 mug Cu per liter (Villosa iris) and 44 mug Cu per liter (Anodonta grandis) were calculated from the results of vital staining. Neutral red was found to be effective in assessing postexposure mortality and sublethal responses after acute exposures to copper.
引用
收藏
页码:879 / 883
页数:5
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