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Chinese Journal of Applied Ecology ›› 2005, Vol. 16 ›› Issue (10): 1962-1966.

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Effects of heavy metal ions on SOD activity of Litopenaeus vannamei hepatopancreas,gill and blood

WU Zhongwang, PAN Luqing, ZHANG Hongxia   

  1. Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China
  • Received:2004-11-30 Revised:2005-04-07 Online:2005-10-15 Published:2005-10-15

Abstract: This paper studied the effects of Cu2+,Zn2+and Cd2+on the superoxide dismutase (SOD) activity of Litopenaeus vannamei hepatopancreas,gill and blood.The results showed that the SOD activity changed significantly with prolonged exposure of these ions (P<0.05).The SOD activity of all test objectives changed with a single peak under the exposure of 0.1~1 mg Cu2+·L-1,that of hepatopancreas and of hepatopancreas and gills was inhibited obviously under 10 mg Zn2+·L-1 and 0.5 mg Cd2+·L-1,respectively,while 0.25 mg Cd2+·L-1 had no significant effect on that of gill.The SOD activity of hepatopancreas,gill and blood all increased first and then decreased under the prolonged exposure of <10 mg Zn2+·L-1and <0.25 mg Cd2+·L-1.There was an obvious dose-time response relationship between test metal ions and SOD activity.The SOD activity was decreased in order of hepatopancreas>gill>blood,while the toxicity of test metal ions was in order of Cd2+>Cu2+>Zn2+.

Key words: Heavy metal ions, Itopenaeus vannamei, Hepatopancreas, Gill, Blood, SOD

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