Halteria grandinella, Euplotes aediculatus, together with Spirostomum teres, are excellent and convenient bioindicators for evaluating the toxicity of waters and wastewaters polluted by heavy metals.
Halteria grandinella, Euplotes aediculatus, together withSpirostomum teres, are excellent and convenient bioindicatorsfor evaluating the toxicity of waters and wastewaterspolluted by heavy metals.