不同环境条件下无菌和自然带菌波吉卵囊藻生长的比较  

Comparison of Growth of Axenic and Nonaxenic Oocystis borgei Under Different Environmental Conditions

作　　者：李静红[1,2] 黄翔鹄[1] 李色东 李活 

机构地区：[1]广东海洋大学水产学院,广东湛江524025 [2]湛江恒兴南方海洋科技有限公司,广东湛江524073 [3]茂名市金阳热带海珍养殖有限公司,茂名525000

出　　处：《广东海洋大学学报》2010年第1期88-92,共5页Journal of Guangdong Ocean University

基　　金：广东省自然科学基金(8152408801000003);广东省科技计划项目(2008A02010000);国家科技支撑项目(2008Badb9b01)

摘　　要：比较不同温度、光照及海水相对密度条件下无菌与自然带菌波吉卵囊藻(Oocystis borgei)生长的差异。结果表明:在20℃时,无菌藻的比增长率(μ)和叶绿素a(Chla)含量分别为0.398d-1和0.117mg/L,均显著高于带菌藻(P<0.05),在28和35℃时,无菌藻和带菌藻生长无显著性差异(P>0.05);在照度为16μmol·m-2·s-1时,无菌藻平均比增长率μ和Chla含量分别为0.345d-1和0.123mg/L,均显著高于带菌藻(P<0.05),在照度为39和88μmol·m-2·s-1条件下,无菌藻和带菌藻生长无显著性差异(P>0.05);在海水密度为1.007、1.020和1.030g/mL时,无菌藻和带菌藻的生长均无显著性差异(P>0.05),μ和Chla含量分别为0.325～0.374d-1和0.085～0.133mg/L。Difference of the growth between the axenic and nonaxenic Oocystis borgei were studied under such environmental conditions as temperature, illumination and sea-water density. The results showed that： When temperature was 20 ℃, mean specific growth rate fi and Chl a content of axenic O. borgei, was 0.398 d-1 and 0.117 rag/L, respectively, and were significantly higher than that of nonaxenic one. When temperature was 28 and 35℃, there were no significant difference between the two algae. When illuminance was 16 μmol·m^-2·s^-1, μ and Chl a content of axenic O. borgei was 0.345 d-1 and 0.123 mg/L respectively, and the two indexes of the axenic algae were significantly higher than nonaxenic one. When illuminance was 39 μmol·m^-2·s^-1, μ of axenic O. borgei was significantly lower than that of nonaxenic one, but there were no significant difference on Chl a content between the two algae. When illuminance was 39 and 88 μmol·m^-2·s^-1, there was no significant difference between the two algae. When sea water density was 1.007, 1.020 and 1.030 g/mL, there was all no significant difference between the two algae, and Chl a content was 0.325 - 0.374 d-1 and 0.085 - 0.133 mg/L, respectively.

关 键 词：波吉卵囊藻 无菌藻 带菌藻 生长 温度 光照 海水相对密度 

分 类 号：Q949.217[生物学—植物学]