绿色微囊藻等不同食物对大型溞生长和脂类成分的影响  

Effects of Microcystis viridis and other different feeding conditions on growth and lipid composition of Daphnia magna

作　　者：王丽娟[1] 成永旭[1] 吴旭干[1] 窦亚卿[1] 陈石林[1] 吕耀平[1] 

机构地区：[1]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

出　　处：《水产学报》2006年第6期843-847,共5页Journal of Fisheries of China

基　　金：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)

摘　　要：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 viridis.So the results indicate that Microcystis viridis with low HUFA made the lower growth rate,spawning rate and hatching rate of Daphnia magna.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.

关 键 词：大型溞 绿色微囊藻 食物条件 总脂 脂肪酸 

分 类 号：S963.213[农业科学—水产养殖]