| Cu2+对大型蚤生长和繁殖的影响 |
| Effects of Cu2+ on the Growth and Reproduction of Daphnia magna |
| 投稿时间：2007-12-10 |
| DOI： |
| 中文关键词:Ｃｕ２＋ 大型蚤 生长 繁殖 |
| 英文关键词:Cu^2＋ Daphnia magna growth reproduction |
| 基金项目: |
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| 中文摘要: |
| 研究了不同浓度Ｃｕ２＋对大型蚤生长和繁殖的毒性影响。试验观察了大型蚤的繁殖指标（产第１胎时间、每只蚤所产总幼蚤数、每只蚤所产总胎数和内禀增长率），同时还观察了存活和生长（体长）２个指标。试验结果显示，随着Ｃｕ２＋浓度的增加，内禀增长率显著下降，但是生长和存活仅在９．６μｇ／ＬＣｕ２＋浓度下显著下降。产第１胎时间随Ｃｕ２＋浓度增加而延长；表明Ｃｕ２＋低浓度下对水生生物的长期慢性影响不容忽视。大型蚤繁殖指标可作为水环境Ｃｕ２＋污染预警生物标志。
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| 英文摘要: |
| The effects of Cu^2＋ on the growth and reproduction of Daphnia magna （ D. magna） was studied in this experiment. The parameters used to evaluate Cu^2＋ effects on reproduction were as followed： days to first brood, mean number of young per adult, mean broods size per adult and intrinsic rate of natural increase. Survival and growth （body length） were also determined. The parameters （mean number of young per adult, mean broods＇size per adult and intrinsic rate of natural increase） decreased with increasing concentration of Cu^2＋ However, growth and survival of the exposed organisms only decreased when D. magna was exposed to 9.6μg/L. Days to first brood increased with increasing Cu^2＋ concentrations. These results indicated that the effects of Cu^2＋ on aquatic organism at low concentration should not be ignored. The reproduction parameter of D. magna may be a valuable marker to monitor the contamination of water environment. |
| 张榜军,刘坤.2009.Cu2+对大型蚤生长和繁殖的影响[J].水生态学杂志,30(1):128-130. |
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