Response of growth and development of Artemia saline to four kinds of heavy metals stress

摘要

Effects of Cr6+, Hg2+, Pb2+ and Zn2+ on the condition of Artemia saline growth and development were studied. The results showed that effects of four kinds of heavy metals stress on the condition of A. saline growth and development were remarkable or high-remarkable. Growth NOECs of Cr6+ at 24h, 48h, 72h and 96h were >0.28mg/L, 0.2mg/L, <0.04mg/L and 0.24mg / L, development NOECs of Cr6+ at 24h, 48h, 72h and 96h were >0.28mg/L, 0.12mg/L, >0.28mg/L and 0.12mg/L; Growth NOECs of Hg2+ at 48h, 72h and 96h were 1.0mg/L and was <0.5mg/L at 24h, development NOECs of Hg2+ at 24h, 72h and 96h were >2.5mg/L and was <0.5mg/L at 48h; Growth NOEC of Pb2+ at 24 h, 48h, 72h and 96h was 6mg/L, 3mg/L, <3mg/L and <3mg/L, development NOEC of Pb2+ at 24h and 72h was 6mg/L and 15mg/L and were <3mg/L at 48h and 96h; Growth NOEC of Zn2+ at 24h and 72h was <0.04mg/L and 0.04mg/L and were >0.28mg/L at 48h and 96h, development NOEC of Zn2+ at 24h and 96h were <0.04mg/L and were >0.28mg/L at 48h and 72h. All four kinds of ions obviously promoted the condition of A. saline growth and development in set concentrations except that 0.04mg/L Cr6+ group offered inhibition of A. saline growth at seventy-second hour and 9mg/L Pb2+ group offered inhibition of A. saline development at twenty-fourth hour. The condition of A. saline growth and development could be used to test toxicity of low concentration heavy metal ions.