摘要：In order to clarify the relationships between the test methods for ecotoxicity, the tests by the various organisms were carried out. We used 6 animals (activated sludge, Daphnia, carinata, Oryzias latipes, Eisenia foetida, Tetrahymena pyriformis and Dugesia japonica) and 3 water plants (Porphyra yezoensis, Lemnaceae and Chlorella vulgaris). The high correlations were observed between the test results of the various determining manners by the use of the same animals (D. carinata, O. latipes or D. japonica). The reproduction test of 14 d by D. carinata gave the most sensitive results in average among the 9 tests examined. The tests by activated sludge, E. foetida and water plants were not sensitive. The tests by O. latipes, D. japonica and T. pyriformis showed moderate sensitivity. The correlations between the water plants and the animals were generally low, and this showed a peculiality of water plants in assessing ecotoxicity.
