| 节肢动物体内的总汞和甲基汞含量研究 |
| 摘要点击 1884 全文点击 1242 投稿时间：2006-12-25 修订日期：2007-03-17 |
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| 中文关键词 节肢动物 汞 甲基汞 食物链 葫芦岛 |
| 英文关键词 arthropod mercury methyl mercury (Me-Hg) food chain Huludao |
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| 中文摘要 |
| 分析了汞污染区河流沿岸草本植物及节肢动物样品中的汞含量.结果表明，节肢动物飞蝗、中华蚱蜢总汞含量分别为0 .032～0 .402 mg·kg-1、0 .023～0 .362 mg·kg-1，高于非污染区1个数量级.飞蝗、中华蚱蜢甲基汞含量分别为0 .003～0 .031mg·kg-1、0 .004～0 .015 mg·kg-1，占总汞比例分别为3 .5%～49 .7%和2 .0%～44 .4%.飞蝗、中华蚱蜢体内（一级消费者）汞含量低于其食物草本植物，与未受污染地区不同；螳螂体内（二级消费者）汞明显累积.飞蝗体内总汞含量随着个体长度增长呈下降的趋势，在中华蚱蜢体内则先增长后下降，甲基汞随着个体长度增长呈上升趋势；节肢动物个体不同部位中汞含量明显不同，腹>胸>头.节肢动物体内汞和甲基汞可能导致野生鸟类、家禽、两栖类生态风险. |
| 英文摘要 |
| We researched mercury contents in plants and arthropods collected from the river banks in mercury polluted areas. The results show that total mercury (T-Hg) and methyl mercury (Me-Hg) in Locusta migratoria manilensis and Acrida chinensis are 0 .032～0 .402 mg·kg-1，0 .023～0 .362 mg·kg-1 and 0 .003～0 .031 mg·kg-1，0 .004～0 .015 mg·kg-1 while the proportion of Me-Hg to T-Hg are 3 .5%～49 .7% and 2 .0%～44 .4% . T-Hg in arthropods is higher than that a magnitude in non-polluted areas. As primary consumers, mercury contents in Locusta migratoria manilensis and Acrida chinensis are lower than plants they eat. That is not consistent with the non-polluted areas. Paraten-odera sinensis is the second consumer and there is an obvious mercury accumulation in it. For Locusta migratoria manilensis, T-Hg decreased with the body length while for Acrida chinensis that increased following a decreasing. But Me-Hg in both increased with body length. Mercury contents in tissues of arthropods are significantly different. The order is abdomen>thorax>head. Mercury and methyl mercury contents in arthropods would lead wild birds, fowls and amphibians in the ecologic risk condition. |
