| Cu2+对日本沼虾幼虾的急性致毒研究 |
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| 引用本文： | 邓道贵,张桂凤,耿雪侠.Cu2+对日本沼虾幼虾的急性致毒研究[J].淮北煤炭师范学院学报(自然科学版),2002,23(3):36-38. |
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| 作者姓名： | 邓道贵 张桂凤 耿雪侠 |
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| 作者单位： | 淮北煤炭师范学院生物系,安徽,淮北,235000 |
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| 基金项目： | 安徽省教育厅自然科学基金资助项目(2000JL196)和淮北煤炭师范学院自然科学基金资助项目 |
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| 摘 要： | Cu2+浓度为0.000 5 mg/L、0.005 mg/L、0.05 mg/L时,日本沼虾幼体在54 h内均能够正常存活;Cu2+浓度为0.1 mg/L时,只有部分沼虾幼体中毒致死.而当Cu2+浓度超过0.25 mg/L时,日本沼虾幼虾在48 h内致死,并出现鳃变兰、肝脏变黑的现象.随着Cu2+浓度增大,日本沼虾幼虾存活的时间变短,肝脏和鳃的中毒颜色变深.日本沼虾幼虾48 h的半致死浓度为0.268 mg/L,其安全浓度为0.026 8 mg/L.
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| 关 键 词： | 日本沼虾 Cu2+浓度 毒性 |
| 文章编号： | 1000-2227(2002)03-0036-03 |
| 修稿时间： | 2001年9月3日 |
Acute Toxicity of Cu2+ to the Juvenile of Macrobrachium Nipponense |
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| DENG Dao gui,ZHANG Gui feng,GENG Xue xia.Acute Toxicity of Cu2+ to the Juvenile of Macrobrachium Nipponense[J].Journal of Huaibei Coal Industry Teachers College(Natural Science edition),2002,23(3):36-38. |
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| Authors: | DENG Dao gui ZHANG Gui feng GENG Xue xia |
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| Abstract: | The Cu2+ concentration is less or equal to 0.1 mg/L,the juvenile can still survive during experiment period.The Cu2+ concentration is 0.1 mg/L,there are only part of the juvenile to die poisoned.When the Cu2+ concentration surpasses 0.25 mg/L, the juvenile of M.nipponense will die within 48 h,and its gill turns blue,and its liver becomes dark.With the increase of Cu2+ concentration,the survival time of the juvenile will become shorter, and the colour of gill and liver will become darker.The LC50 is 0.268 mg/L at 48 h.Safety concentration is 0.026 8 mg/L. |
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| Keywords: | macrobrachium nipponense Cu2+ toxicity |
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