the initial soil provoked a considerable toxicity towards E.fetida, recording an EC50 of 42 percent in the mortality test
During the development of this assay, the individuals tries to avoid direct contact with the higher concentrations of polluted soil, going up the walls of container or organising themselves in a "cluster"
the chronic exposure to polluted soil also produced a negative effect on E.fertida reproduction, significantly reducing juveniles'production
In the behaviour response test, a 60 percent of avoidance at 30 percent of soil was observed, i.e. less 20 percent of individuals were found in the test soil above this proportion of polluted soil, so the habitat function of this soil is clearly limited