EFFECTS OF SALINITY 0N THE GROWTH AND FATTY ACID COMPOSITION OF SIXS TRAINS OF MARINE DIATOMS
- 出版年：2000
- 作者：LIANG Ying；MAI Kangsen；SUN Shichun；HUANG Guoxiao；HU Haiyan
- 单位1：Aquaculture Research Lab, Ocean University of Qingdao
- 语种：英文
- 作者关键词：salinity；relative growth rate；dry weight；fatty acid
- 起始页：53
- 总页数：10
- 刊名：海洋湖沼通报
- 主编：王彬华
- 期：4
摘要
The effect of salinity (18‰, 28‰ and 38‰) on the growth and fatty acidcomposition of six strains of marine diatoms Chaetoceros gracilis (B13), Cylindrothecafusiformis (B211), Phaeodctylum tricornutum (Bl14, B118 and B221) and Nitzschiaclosterium (B222) was investigated. The relative growth rate showed an increase in B13and a decrease in B 114 and B222 with the increase of salinity. The dry weight of B13increased with the increase of salinity and reached its highest value (0.21) at the highestsalinity (38％o). The dry weight of B114, B118, B221 and B222 both reached their highestvalues (0.26, 0.32, 0.40 and 0.30, respectively) at salinity 28‰. No significant differencewas observed in B211 (0.35～0.36). The major fatty acids of the 6 strains were 16:0,16:1 (n-7) and 20:5(n-3). B211 also had a high percentage of 20:4n-6 (5.6-7.4%). B13also had a high percentage of 14:0 (20.0- 30.9%). Saturated fatty acids decreased withthe increase of salinity in B211, B22l and B222,and reached their highest values in 18‰in B211 (41.7％), B221 (37.6％) and B222 (31.7％),and in 28‰ in B13 (48.1%), B114(33.0%) and B118 (31.0％). Monounnsaturated fatty acids increased in B114,Bl18, B221and B222 while decreased in B13 and B211 with the increase of salinity. PolyunsatLlratedfatty acids had their highest values in 18‰in B13(31.3%), B114(19.6%), B118(23.4%)and B222(18.6％), and in 28‰ in B2ll (25.1％) and B221 (16.3％).