C/N对牟氏角毛藻生长速率和总脂含量的影响  

The effect of C/N on the growth and total lipid content of Chaetoceros muelleri

作　　者：王蒙[1,2] 李纯厚[1] 戴明[1] 吕国敏[1] 韦芳三[1,2] 梁福全[1] 周岩岩[1,2] 杨慧英[1,2] 胡维安[1,2] 杨进[1,2] 李琦[1,2] 

机构地区：[1]中国水产科学研究院南海水产研究所,农业部海水养殖生态与质量控制重点开放实验室,广东广州510300 [2]上海海洋大学水产与生命学院,上海201306

出　　处：《水产学报》2010年第10期1518-1524,共7页Journal of Fisheries of China

基　　金：广东省海洋渔业科技推广专项(A200899I04)

摘　　要：以牟氏角毛藻为实验材料,研究了1∶1、2∶1、3∶1、4∶1和5∶1等5种不同C/N比值培养液对牟氏角毛藻生长及总脂含量的影响。结果表明,在C/N比值为2∶1时,牟氏角毛藻的相对生长率最高,达到每天1.98,C/N比值为3∶1时,相对生长率最低,为每天1.69;C/N比值为5∶1时,总脂含量百分比达到最高,为31.26%,C/N比值为2∶1时,总脂含量百分比最低,仅为28.39%;C/N比值为2∶1时,总脂日增量最高,达到0.84,C/N比值为3∶1时,总脂日增量最低,仅为0.64;5种C/N比值对牟氏角毛藻不饱和脂肪酸的积累有不同程度的促进作用,C/N比值为5,总不饱和脂肪酸的比例达最高。综合比较表明,C/N比值为2∶1时,最适合牟氏角毛藻的生长及总脂肪积累。The effect of the medium of C/N ratio（1∶1,2∶1,3∶1,4∶1 and 5∶1,respectively）on the growth and total lipid content of Chaetoceros muelleri was evaluated in this study.The results showed that this algae had the highest growth rate of 1.98%/d at the C/N ratio of 2∶1 and lowest growth rate of 1.69%/d at ratio of 3∶1.The total lipid content of this algae was the highest（31.26%）at the C/N ratio of 5∶1,but lowest（28.39%）at 2∶1,and the daily lipid had the highest increment,which was 0.84 ag.The daily increment of lipid content was 0.64 ag at the C/N ratio of 3∶1.The unsaturated fatty acids were also different in accumulation during the cultivation with 5 different C/N ratio mediums in this finding.The total unsaturated fatty acids content was the highest when the C/N ratio was 5∶1.In conclusion,the growth rate and total lipid accumulation of C.muelleri was best at the C/N ratio of 2∶1 in this study.

关 键 词：牟氏角毛藻 碳氮比 相对生长率 总脂含量 总脂日增量 

分 类 号：Q949.27[生物学—植物学] S917.3[农业科学—水产科学]