Toxicity of cuso4 and Znso4 on Eudrilus eugeniae Patil D. S., More B.C.1 Dept. of Zoology, NTVS's G. T. Patil Arts, Science and Commerce College, Nandurbar 1Dept. of Zoology, K.A.M.P. Arts, Commerce and N.K.P. Science College, Pimpalner Online published on 20 July, 2020. Abstract Present research work deals with toxicity of CuSO4 and ZnSO4 on earthworm, Eudrilus eugeniae, evaluated as per the OECD (1984) guidelines. CuSO4 at the concentration of 126.07 ± 4.36 and 117.65 ± 0.95 mg/kg for 7 and 14 days of exposure respectively, whereas ZnSO4 at the concentration of 1248.75 ± 72.48 mg/kg and 1187.75 ± 38.54 mg/kg for 7 and 14 days respectively were found to be responsible for 50% mortality. During this study, most of the worms in artificial soil showed morphological and behavioral changes i.e. curling of body, sluggish movement, excessive mucus secretion, slight swelling of clitellar region due to the treatment with CuSO4 while ZnSO4 treatment showed sluggish movement and excessive mucus secretion. The results obtained during present investigation indicated that CuSO4 and ZnSO4 had toxic effect on Eudrilus eugeniae, wherein CuSO4 was found to be more toxic than ZnSO4. Top Keywords Toxicity, Eudrilus eugeniae, CuSO4 and ZnSO4 Heavy metal, Artificial soil. Top |