Influence of yeast quality on performance of gnotobiotically grown Artemia

被引:67
作者
Marques, A
François, JM
Dhont, J
Bossier, P
Sorgeloos, P
机构
[1] Univ Ghent, Lab Aquaculture, B-9000 Ghent, Belgium
[2] Univ Ghent, Artemia Reference Ctr, B-9000 Ghent, Belgium
[3] Inst Natl Sci Appl, Ctr Bioingn Gilbert Durand, F-31077 Toulouse 04, France
关键词
Artemia; gnotobiotic culture; Saccharomyces cerevisiae;
D O I
10.1016/j.jembe.2004.04.009
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
Using axenically grown Artemia, a model system was developed to evaluate the effect of bacteria on the survival and development of this crustacean. Two strains of baker's yeast (Saccharomyces cerevisiae) were used in all experiments as feed for Artemia: a wild-type strain and its mnn9 mutant, defective in the synthesis of mannoproteins in the outer cell wall. The genetic background, yeast growth phase and growth medium appeared to be important parameters determining the quality of yeast cells as feed for Artemia. A strong positive correlation between Artemia performance and the yeast cell wall chitin and glucan content was obtained, while the mannoprotein content was negatively correlated. Mnn9 yeast cells grown till exponential phase in minimal medium proved to be excellent feed for Artemia, yielding an average 95% survival and 4-mm growth after 6 days at 28 degreesC, which is comparable to the best results obtained with algal feed. The standard growth test yields highly reproducible results and can become an excellent tool to study the mode of action of bacteria. Furthermore, yeast cell viability and the method used to kill/sterilize the cells are important parameters influencing nauplii performance. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:247 / 264
页数:18
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