RESPONSES OF HYALELLA AZTECA TO THE EFFECT OF LANTHANUM IN THE CONDITIONS OF A CHRONIC TRIAL

The responses of the laboratory culture Hyalella azteca to the effect of lanthanum sulfate solutions in the concentration range of 0.16–160 μmol/l under conditions of a chronic trial were studied. It was shown that the mortality of H. azteca increased with an enhance in the concentration of La3+ in the solution. A consistent increase in the concentration of La3+ led to a natural raise in food consumption. The most informative test function in assessing the toxicity of La3+ is the length and weight of H. azteca, while the length and number of antennal segments are not informative.