肠球菌在家蚕消化道中的分布  

Distribution of the Enterococci Isolated From the Intestine of the Silkworm, Bombyx mori

作　　者：鲁兴萌[1] 金伟[1] 钱永华[1] 贡成良 

机构地区：[1]浙江大学蚕学系,杭州310029

出　　处：《蚕业科学》1999年第3期158-162,共5页ACTA SERICOLOGICA SINICA

摘　　要：用ＡＰＩ２０ ＳＴＲＥＰ（Ｖ５０） 系统对从健康家蚕消化道来源的８９ 株肠球菌菌株进行数值分类学研究的结果表明：在分离菌株中分布着Ｅｎｔ．ｃａｓｓｅｌｉｆｌａｖｕｓ、Ｅｎｔ．ｆａｅｃａｌｉｓ、Ｅｎｔ．ａｖｉｕｍ 、Ｅｎｔ．ｄｕｒａｎｓ 和Ｅｎｔ．ｇａｌｌｉｎａｒｕｍ 等菌种，其分布频率分别为３２６ ％ 、２５９％ 、１５７ ％ 、３４ ％ 和２２ ％ 。其余１８ 个菌株未能被该系统所分类。Ｅｎｔ．ｃａｓｓｅｌｉｆｌａｖｕｓ 和Ｅｎｔ．ｆａｅｃａｌｉｓ 是家蚕消化道内的主要肠球菌菌丛。Ｅｎｔ．ｃａｓｓｅｌｉｆｌａｖｕｓ 在５ 龄初和末的分布频率较高，Ｅｎｔ．ｆａｅｃａｌｉｓ 在５ 龄第４ 和第５ 天的分布频率较高。Eighty nine Enterococcus isolates were obtained from the intestine of the healthy silkworm larvae and moths.These isolates were classfied by using API 20 STREP(V.5.0) system based on numerical taxonomy.The results indicated Ent.casseliflavus,Ent.faecalis,Ent.avium,Ent.durans and Ent.gallinarum were distributed in these isolates with the distribution frequency of 32.6%,25.9%,15.7%,3.4% and 2.2%,respectively.The remaining 18 isolates could not be classfied by this system. Ent.casseliflavus and Ent.faecalis were major species of enterococcal flora at the intestine of the silkworm. Ent.casseliflavus was present at a high frequency in early and later period of 5th instar. Ent.faecalis distributed in assemblage at 4th and 5th day of 5th instar.

关 键 词：家蚕 肠球菌 数值分类 消化道 细菌性肠道病 

分 类 号：S884.43[农业科学—特种经济动物饲养]