摘要
研究了盐度波动幅度(盐度恒定组S0为对照,盐度波动幅度设3、6、9、12和15五个水平,分别用S3、S6、S9、S12和S15表示)对缢蛏生长和生化组成的影响,实验周期90d。结果表明:随盐度波动幅度的升高,缢蛏存活率、分别以末壳长度和末体质量表示的特定生长率(SGRFL和SGRFQ)呈上升趋势,当到达临界值后,其存活率、SGRFL和SGRFQ随盐度波动幅度的升高而下降;而缢蛏水分和粗蛋白含量呈下降趋势,当到达临界值后,其水分和粗蛋白含量随盐度波动幅度的升高而上升。Turkey’s多重比较发现,S3、S6和S9盐度波动处理组缢蛏的存活率、SGRFL和粗脂肪含量与对照组相比组间差异不显著(P>0.05),而S6和S9盐度波动处理组缢蛏的SGRFQ显著高于对照和其它处理组(P<0.05)。缢蛏存活率、末壳长度、末体质量、SGRFL、SGRFQ、水分含量、粗蛋白含量、粗脂肪含量和灰分含量达到最适值的盐度波动幅度分别为3.24、5.16、5.47、5.00、5.41、6.20、5.32、5.20和6.94。
The study was conducted to determine the effect of salinity fluctuation（S0,the control group exposed to the constant salinities,S3,S6,S9,S12 and S15 as the representative of salinity fluctuations of 3‰,6‰,9‰,12‰ and 15‰,respectively） on the growth and biochemical composition of Sinvnovacula constricta.The experiment lasted for 90 days.The results showed that the survival and specific growth rate（the finial shell length SGRFL and final quality SGRFQ） of S.constricta exhibited increased trends,reaching the maximum value,and thereafter declined,whereas the content of moisture and crude protein exhibited decrease trends,reaching the minimum value,and thereafter rise.Tukey＇s test indicated that the survival,SGRFL and the crude lipid content of S.constricta at S3,S6 and S9 were not significantly different as compared with that of the control（P〉0.05）,whereas SGRFQ at S6 and S9 were significantly higher than that of the control and other treatments（P〈0.05）.Regression analysis indicated that the optimum salinity fluctuation of the survival,finial shell length,final quality,SGRFL,SGRFQ,moisture content,crude protein content,crude lipid content and ash content were 3.24,5.16,5.47,5.00,5.41,6.20,5.32,5.20 and 6.94,respectively.
出处
《海洋通报》
CAS
CSCD
北大核心
2010年第5期567-571,共5页
Marine Science Bulletin
基金
江苏省自然科学基金项目(BK2006548)
关键词
缢蛏
盐度波动幅度
生长
生化组成
Sinvnovacula constricta
salinity fluctuation
growth
biochemical composition
