Toxicity of Derosal (active ingredient carbendazim) to aquatic invertebrates

Short- and long-term laboratory single species toxicity tests were performed with eleven invertebrate species and the fungicide Derosal(R) (a.i. carbendazim). Toxicity values differed widely between the tested invertebrates. The most sensitive species we found was the flatworm Dugesia lugubris (96hr-EC50: 25 g/L, 21d-NOEC(reproduction): 11 g/L). Besides within flatworms, other sensitive taxa were representatives of oligochaetes, amphipods and cladocerans. On the longer-term, offspring production of some gastropod species was found to be a relatively sensitive life history characteristic for this latter group