期刊
HYDROBIOLOGIA
卷 446, 期 -, 页码 375-381出版社
KLUWER ACADEMIC PUBL
DOI: 10.1023/A:1017531712808
关键词
aquatic toxicology; ecotoxicology; metal toxicity; sediment toxicity; rotifers
Three rotifer species, Lecane hamata L. luna, and L. quadridentata, were submitted to acute toxicity tests to compare their susceptibility to 11 toxicants. In acute tests with 48-h exposure of neonates of less than 24 h old, copper was most toxic with LC50 values in the range of 0.06-0.33 mg l(-1), while acetone was the least toxic with LC50 values in the range of 5000-7000 mg l(-1). Differences in LC50 value of up to 22-fold were found in the susceptibility to lead between the three species. These data indicate large differences in toxicity among members of the same genus, and point out that it is necessary to submit several species to toxicity tests in order to assess the potential effects of toxicants to rotifers. The commonly used Brachionus calyciflorus cannot be considered representative of all freshwater rotifers in this respect.
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