| Bioassays with two marine nematode species were used to determine the toxicity of four heavy metal compounds and three carcinogens. The test using the marine species <i>Diplolaimelloides bruciei</i> is more sensitive than the existing nematode test using the freshwater nematode <i>Panagrellus redivivus</i> for mercury chloride and 2-acetamidofluorene, but less sensitive for methylmercury chloride, phenacetin, and 4-aminobiphenyl. The <i>Monhystera microphthalma</i> test is less sensitive than the nematode test with <i>P. revivus</i> for mercury chloride, selenium oxide, and cesium chloride. The range between the concentrations at which no toxic effects are observed and the concentrations at which 100%... |
