| 镉对中间球海胆精子发生的影响 |
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| 引用本文： | 李霞,王秋实,李鸥.镉对中间球海胆精子发生的影响[J].大连水产学院学报,2007,22(5):319-324. |
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| 作者姓名： | 李霞 王秋实 李鸥 |
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| 作者单位： | 大连水产学院,农业部海水增养殖学与生物技术重点开放实验室,辽宁,大连,116023 |
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| 基金项目： | 大连市科技项目(2003B1NS283) |
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| 摘 要： | 研究了不同浓度镉离子(0.005、0.1、0.5、1.0 mg/L)对中间球海胆Strongylocentrotus interm edius精子发生的影响。结果显示:在光镜下观察,染毒第6、18 d后,各浓度组中间球海胆滤泡结构完好,生殖细胞发育情况同对照组基本一样;染毒第42 d后,0.5、1.0 mg/L Cd2 浓度组生精细胞排列混乱,滤泡膜破损;染毒第54 d后,各浓度组海胆性腺均出现滤泡解体现象。对染Cd2 54 d的0.5、1.0 mg/L组海胆精巢进行超薄切片观察,可见各级生精细胞亚显微结构变化明显,主要表现为核染色质异常凝集,核膜结构损伤,线粒体空泡化,精子形态畸形等。说明镉能影响中间球海胆的精子发生,导致精子质量下降。
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| 关 键 词： | 镉 中间球海胆 精子发生 |
| 文章编号： | 1000-9957（2007）05-0319-06 |
| 修稿时间： | 2006-12-25 |
The effects of cadmium on spermatogenesis in sea urchin Strongylocentrotus intermedius |
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| LI Xia,WANG Qiu-shi,LI Ou.The effects of cadmium on spermatogenesis in sea urchin Strongylocentrotus intermedius[J].Journal of Dalian Fisheries University,2007,22(5):319-324. |
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| Authors: | LI Xia WANG Qiu-shi LI Ou |
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| Abstract: | The effects of cadmium(0.005,0.1,0.5,and 1.0 mg/L)on spermatogenesis in sea urchin Strongylocentrotus intermedius were studied.There was no significant alteration in the gonadal acini after 6 and 18 d of Cd2 exposure.The spermatogenic cells were the same as those in the control.After 42 d Cd2 exposure,disorder arrangement of spermatogenic cells and damaged membranes of gonadal acini were observed in the Cd2 0.5 mg/L and 1.0 mg/L groups.Disorganization occurred at the end of the experiment.Spermatogenic cells had ultrastructural changes after 54 d cadmium exposure in the Cd2 0.5 mg/L and 1.0 mg/L groups including the nucleus condensed abnormally,disintegrated membrane structure,and vacuolated mitochondria.The alterations led to the malformation of sperm,indicating that cadmium ions affect the spermatogenesis and sperm quality in the sea urchin. |
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| Keywords: | cadmium Strongylocentrotus intermedius spermatogenesis |
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