摘要
分析了中国9个内陆盐湖卤虫的生物学测定值、孵化特性、蛋白质含量和脂肪酸组成，不同品系的卤虫在卵径、无节幼体体长、脱壳卵和无节幼体干重等生物学测定值方面存在着极其显著的差异（P＜0．01）。不同品系卤虫在孵化过程中的失重率为11．7％－27．7％．不同品系卤虫的蛋白质含量为45％－57％．尕海、小柴旦、巴里坤等卤虫品系含有较高水平的EPA（20：5ω3），而内蒙古的几个卤虫品系的EPA含量却很低；所有的卤虫品系都缺乏DHA（22：6ω3）。
The Artemia cysts used in the experiment are sampled from the following 9 inland salt lakes of the People's Republic of China: Aibi Lake (AB), Balikun Lake (BLK). Dabancheng Lake (DBC) (Xinjiang Province). Gahai Lake (GH), Xiaocaidan Lake (XCD) (Qijnghai Province ).Huhetaolegainor Lake (HHT). Ejinor Lake(EJN ) (Inner Mongolia), Xiechi Lake(YC) (Shanxi Province). The following characteristics of different Aremia strains are analyzed : (1)Biometrics: diameter of hydrolic cysts and decapsulated cysts. chorion , length of nauplii. dry weight of decapsulated cysts and nauplii. weight loss during hatching . (2)Hatching characteristics: hatching percentage, hatching efficiency, hatching rate. (3)Nutrition analyse: protein content ,fatty acid composition.Significant differences (P<0.01) on the measurement of biometrics was found among different strains. All pathenogenetic Atemia strains have larger diameter of cysts and decapsulated cysts, nauplii length. dry weight of decapsulated cysts and nauplii compared to bisexual strains. The strong relations between different biometric characteristics except chorion are present in dif ferent strains. The chorion range is 4. 2 ~ 12. 2 μm , while the weight loss during hatching is 11.7% - 27. 7% .The hatching characteristics fluctuate widely from strain to strain. The hatching percentage of different strains was 13. 5% - 83. 6% under the hatching condition (28℃,3‰, salinity, pH8. 5. continued aeration and illumination). The T90 of all the strains. except BLK and HHT.is less than 24h.The protein and total lipid content of all the strains are within 45% - 57% and 125. 68 -177. 94 mg/g. respectively. The strains of GH, XCD and BLK have higher EPA (20: 5ω3) content. while the strains from Inner Mogolia have the lowest EPA content. No DHA was present in all strains.
出处
《湖泊科学》
EI
CAS
CSCD
1998年第3期19-24,共6页
Journal of Lake Sciences
关键词
卤虫
生物学测定
孵化特性
脂肪酸组成
盐湖
Artemia, biometrics, fatty acid composition, hatching characteristics,salt lakes
