Journal of Marine Sciences ›› 2016, Vol. 34 ›› Issue (1): 61-66.DOI: 10.3969/j.issn.1001-909X.2016.01.008

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Study on toxic effect of cadmium on Portunus trituberculatus

SONG Guo-lin, MU Chang-kao*, LI Rong-hua, WANG Chun-lin   

  1. School of Marine Sciences, Ningbo University, Ningbo 315211, China
  • Received:2015-04-22 Revised:2015-10-11 Online:2016-03-15 Published:2022-11-24

Abstract: In this study, acute and sub-acute experiments were conducted to elucidate the toxic effect of cadmium on Portunus trituberculatus. The results show that the median lethal dose of cadmium are 6.55, 4.33 and 3.12 mg/L for 48 h,72 h and 96 h respectively, and the safe concentration of this metal is 0.31 mg/L. As the extension of exposure time, the expressions of HSP70 in hepatopancreas and gill are increased at the beginning, and then decreased significantly under the safe concentration and fishery water quality standard. Compared with control group, the expression of HSP70 in gill is more obvious than that in hepatopancreas. Under the safe concentration, the survival rate of Portunus trituberculatus is not changed obviously, but the excessive expression of HSP70 reflects that the crab is stressed by Cd2+ exposure, so HSP70 indicators can be reflected more sensitive than the median lethal concentration at low concentration of Cd2+ pollution.

Key words: Portunus trituberculatus, Cd2+, acute toxicity test, HSP70

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