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《Journal of Anhui Agricultural Sciences》 2008-10
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Study on the Toxicity of Trace Heavy Metals on the Feeding Behavior of Hydra peseudoligactis

QIAO Bo et al (College of Life Sciences,Shenzhen University,Shenzhen,Guangdong 518060)  
[Objective] The aim of the research was to provide the technical support for the toxicological study on Hydra peseudoligactis.[Method] The lowest observed effect concentration(LOEC) of 3 kinds of trace heavy metal ions(Cu2+,Cr6+and Zn2+) for inhibiting the feeding and the feeding response of H.peseudoligactis. [Result] LOEC of Cu2+,Zn2+ and Cr6+ for inhibiting the feeding of H.peseudoligactis were 0.014,0.51,6×10-5 mg/L resp.and their LOEC for inhibiting the feeding response of H.peseudoligactis were 0.03,0.55,8×10-5 mg/L resp.The non-observed effect concentration(NOEC) for inhibiting the feeding response of H.peseudoligactis were 0.01,0.5,6×10-5 mg/L resp.Cu2+,Zn2+ and Cr6+ all had obvious inhibitory effects on the feeding behavior of H.peseudoligactis and their toxicity in turn was Cr6+ Cu2+ Zn2+.[Conclusion] It was feasible to determine the micro toxicity of water body by using different feeding characteristics of H.peseudoligactis.This technology had higher detection efficiency and it was better than that of conventional animal soaking method.
【Fund】: 国家高技术研究发展计划项目(2005AA60101005);; 深圳大学大学生创新性实验计划项目
【CateGory Index】: X174
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