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| 3种微生态制剂对大型溞存活、生殖和种群增长的影响 | |
| 引用本文： | 魏杰,赵文,李文通,张黎,殷旭旺.3种微生态制剂对大型溞存活、生殖和种群增长的影响[J].生物学杂志,2012,29(2):18-21,46. |
| 作者姓名： | 魏杰 赵文 李文通 张黎 殷旭旺 |
| 作者单位： | 1. 大连海洋大学,辽宁省水生生物学重点实验室,大连116023 2. 大连海洋大学,辽宁省水生生物学重点实验室,大连116023;北京市水产科学研究所,北京100068 3. 北京市水产技术推广站,北京,100021 |
| 基金项目： | 北京市科委项目，国家海洋公益项目 |
| 摘 要： | 研究了3种微生态制剂(复合微生态制剂Ⅰ、复合微生态制剂Ⅱ和芽孢杆菌)对大型溞的急、慢性毒性影响,分析比较了3种微生态制剂的安全使用剂量以及对大型溞生殖和种群增长的影响.试验结果表明,3种微生态制剂对大型溞死亡率影响均显著(P < 0.05),从安全浓度来看,对大型溞的毒性作用依次为:复合微生态制剂Ⅱ>复合微生态制剂Ⅰ>芽孢杆菌;在安全浓度范围内,3种微生态制剂对大型溞亲代(P)的生殖和种群增长均有明显的促进作用,表现在随微生态制剂浓度的升高,P代的净生殖率(R0)和内禀增长率(rm)均显著增加(P < 0.05),其中以复合微生态制剂Ⅰ的效果最好,R0最高值为对照组的7倍,rm最高值为对照组的1.7倍;3种微生态制剂对大型溞子一代(F1)和子二代(F2)的生殖和种群增长均没有促进作用. |
| 关 键 词： | 大型溞 微生态制剂 存活 生殖 内禀增长率 |
Effects of three probiotic agents on the survival, fecundity and population growth of Daphnia magna |
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| WEI Jie , ZHAO Wen , LI Wen-tong , ZHANG Li , YIN Xu-wang.Effects of three probiotic agents on the survival, fecundity and population growth of Daphnia magna[J].Journal of Biology,2012,29(2):18-21,46. | |
| Authors: | WEI Jie ZHAO Wen LI Wen-tong ZHANG Li YIN Xu-wang |
| Institution: | 1(1.Key Laboratory of Hydrobiology in Liaoning Province,Dalian Ocean University,Dalian 116023; 2.Beijing Aquatic Product Technology Promotion Department,Beijing 100021; 3.Beijing Fisheries Research lnstitute,Beijing 100068,China) |
| Abstract: | The acute effects of three probiotic agents(PA-Ⅰ,PA-Ⅱ and Bacillus sp.) on survival of the crustacean Daphnia magna were examined and their chronic effects on fecundity and population growth were evaluated.Results showed that D.magna significantly exhibited a decrease in survival under three probiotic agents(P<0.05).While based on a 24-h 50 percent lethal concentration(LC50),a 48-h LC50 and safe concentration,the toxicity of three probiotic agents in decreasing order was PA-Ⅱ>PA-Ⅰ>Bacillus sp..The parental D.magna(P) increased significantly in both net reproduction rate(R0) and intrinsic rate of increase(rm) under the safe concentration of three probiotic agents,especially PA-Ⅰ,in which the highest values of R0 and rm were respectively 7 and 1.7 times comparing with the control group.However,the offspring observation revealed no significant effects of D.magna on fecundity and population growth. |
| Keywords: | Daphnia magna probiotic agents survival fecundity intrinsic rate of increase |
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