摘要
从刺参Stichopus japonicus前后消化管、体腔液和表皮上所分离到的359株细菌分别属于弧菌属、假单胞菌属、奈瑟氏球菌属、不动杆菌属、柄杆菌属、黄杆菌属、节杆菌属、微球菌属、黄单胞菌属、棒杆菌属、产碱菌属这十一个主要菌属;57株酵母菌分别属于球拟酵母属、红酵母属、隐球酵母属和德巴利氏酵母属四个属。刺参样品分别于1986年10月至1988年5月采自灵山岛、威海和青岛。 研究表明,刺参肠道微生物的特异性主要体现在后肠,并在其中分离到罕见的Caulobacter属菌株。肠道微生物的组成和生理生化特性,反映出刺参选择性摄取藻类营养的特点。刺参栖居地泥中常见的芽孢杆菌在肠道内很少发现;前肠数量较高的弧菌和假单胞菌在后肠大为消弱。刺参体液对某些细菌有抑制作用,对体内微生物组成与数量有一定调节控制作用。
Three hundred and fifty-nine strains of bacterium and fifty-seven strains of yeast isolated from foregut, hindgut, coelomic liquid and body surface of Stichopus japonicus were studied for biochemical activities. Bacteria mainly belong to eleven genera: Vibrio, Pseudomonas, Neisseria, Acinetobacter, Flavobacterium, Arthrobacter, Micrococcus, Xanthomonas, coryneba-cterium, Caulobacter and Alcaligenes. Yeasts are attributed to Torulopsis, Rhodotorula, Cryp-tococcus, and Dcbaryomyces.Bacterial isolates from hindgut of hungry S. japonicus are characterized by abundance in members of Caulobacter which are rarely isolated from marine sedimentary environment. The studies on microbial composition and physiological property show that the debris of algae cOuld be selectively taken in by S. japonicus. Bacillus strains are the common members in the habitat sedimentary mud, but few of them could be found from S. japonicus. Vibrio and Pseudomonas are depressed in the hindgut though they are dominant in foregut. The concentrate of coelomic liquid from living S. japonicus was prepared by lyophilization and showed certain inhibitory action for some bacteria. This kind of inhibitory substance may play a special role for regulating and controlling the microbial community of S. japonicus.
出处
《海洋与湖沼》
CAS
CSCD
北大核心
1989年第4期300-307,共8页
Oceanologia Et Limnologia Sinica
基金
国家自然科学基金
