学术
绿色微囊藻等不同食物对大型溞生长和脂类成分的影响
王丽娟 成永旭 吴旭干 窦亚卿 陈石林 吕耀平
上海水产大学生命科学与技术学院农业部水产种质资源和养殖生态重点开放实验室,上海200090
摘 要:
富营养化在中国是一个突出的环境问题，湖泊富营养化问题的核心则是浮游植物的过量生长，目前控制浮游植物过量生长，可通过“生物操纵”的方法进行控制。有许多研究报道：浮游动物是生物操纵的关键因子之一，浮游动物是水域生态系统中主要的次级生产者，在能量传递及物质转换中起重要作用，枝角类是浮游动物的重要组成类群，理论上应该对控制浮游植物的过量生长和控制水华发生方面具有重要作用。[第一段]
文章出处:
《水产学报》-2006年30卷6期 -843-847页
分 类 号:
文献标识码:
A
文章编号:
1000-0615（2006）06-0843-05
Effects of Microcystis viridis and other different feeding conditions on growth and lipid composition of Daphnia magna
WANG Li-juan, CHENG Yong-xu, WU Xu-gan, DOU Ya-qing, CHEN Shi-lin, Lü Yao-ping （ Key Laboratory of Aquatic Genetic Resources and Aquacultural Ecosystem Certificated by the Ministry of Agriculture, College of Aqua-life Science and Technology, Shanghai Fisheries University, Shanghai 200090, China）
Abstract:
The growth and reproduction of Daphnia magna fed with Microcystis viridis and Chlorella spp respectively and 20% fish oil ＋ 80% yeast and yeast were studied. The intrinsic rate of natural increase of Daphnia magna （rm） was 0.243 fed with Microcystis viridis, 0.301 with Chlorella spp., 0.244 with 20% fish oil ＋ 80% yeast and 0. 193 with yeast. The result showed that： Daphnia magna fed with Microcystis viridis had lower growth rates than that fed with Chlorella spp. and 20% fish oil ＋ 80% yeast which both had full fatty acids. And the Daphnia magna fed with yeast was the lowest. So the fatty acids composition of diet may affect the growth of Daphnia magna. This paper further examined total lipids and main HUFA （EPA and DHA） compositions of the continuous three generations of Daphnia magna （in order to get rid of the effects of former diet） fed with different of above diets （ except the yeast）. The result showed that：the three generations of the D. magna fed with Microcystis viridishad the lowest total lipids and the percentages of the HUFA （EPA, and no DHA） have a significant decrease and get the lowest EPA in the final experiment because of the very low HUFA especially EPA and DHA in Microcystis vividis. So the results indicate that Microcystis viridis with low HUFA made the lower growth rate, spawning rate and hatching rate of Daphnia magna.[著者文摘]
Key words:
Daphnia magna ; Microcystis viridis ;total lipid;fatty acid
基金资助:
国家自然科学基金（39900112）,上海市曙光计划项目（02G40）,上海市重点学科建设项目（Y1101）
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