几种重金属离子对光倒刺鲃胚胎发育的毒性
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广东省教育厅资助项目(No.Z02079)


Toxic Effects of Several Heavy Metals on the Embryos Development of Spinibarbus hollandi
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    摘要:

    在水温24~26℃条件下,采用半静止式生物毒性实验法,分析了不同浓度的Cu2+、Zn2+、Cd2+对光倒刺鲃(Spinibarbushollandi)胚胎发育的毒性效应,以及Cu2+-Cd2+、Pb2+-Zn2+对光倒刺鲃胚胎发育的联合毒性效应。结果表明,在各种不同浓度的重金属离子溶液实验组中胚胎的孵化率均较低,与对照组差异极显著(P<0.01);各种重金属在胚胎发育过程中引起各种畸形;除了Cu2+≥0.10mg/L、Cu2+-Cd2+≥0.50mg/L、Pb2+-Zn2+≥2.00mg/L实验组会促进胚胎发育速率外,其余各种离子溶液的各实验组均在不同程度上减慢胚胎的发育速率。3种重金属对光倒刺鲃胚胎发育的毒性效应表现为Cu2+>Cd2+>Zn2+。Cu2+、Cd2+、Zn2+、Cu2+-Cd2+混合、Pb2+-Zn2+混合离子对光倒刺鲃胚胎发育的安全浓度分别为0.009mg/L、0.065mg/L、0.023mg/L、0.011mg/L、0.523mg/L。Cu2+与Cd2+对光倒刺鲃胚胎的联合毒性为拮抗作用。

    Abstract:

    The present paper deals with the toxic effects of Cu2+,Zn2+,Cd2+ in different ion concentration and the joint toxicity of Cu2+-Cd2+ and Pb2+-Zn2+ on the embryos development of Spinibarbus hollandi by using the semi-static test method,under the condition of water temperature between 24-26℃.The result suggests that the hatching rate of embryos incubated at the heavy metal solutions of different concentration is lower than the control,and the differences is extreme significant(P<0.01).Malformation of embryos was caused by the heavy metal element during the embryos development stage.The development speed of embryo was advanced in the experimental groups(Cu2+≥0.10 mg/L,Cu2+-Cd2+≥0.50 mg/L,Pb2+-Zn2+≥2.00 mg/L),but reduced in the rest of experimental groups of various concentration of metal solutions.The toxic effects of the heavy metals on the embryos development of S.hollandi are Cu2+>Cd2+>Zn2+.The safe concentration of Cu2+,Cd2+,Zn2+,Cu2+-Cd2+,Pb2+-Zn2+ are 0.009 mg/L,0.065 mg/L,0.023 mg/L,0.011 mg/L,0.523 mg/L respectively.The joint toxicity of Cu2+ and Cd2+ to the S.hollandi is antagonistic.

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邹佩贞,张淑玲,易捷仪.2008.几种重金属离子对光倒刺鲃胚胎发育的毒性.动物学杂志,43(4):7-12.

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  • 收稿日期:2008-02-04
  • 最后修改日期:2008-04-29