《中国畜牧兽医》 ›› 2017, Vol. 44 ›› Issue (10): 3057-3062.doi: 10.16431/j.cnki.1671-7236.2017.10.032

• 预防兽医 • 上一篇    下一篇

斑点叉尾鮰套肠病病原嗜水气单胞菌的分离与鉴定

吴璇1, 袁海文1, 谢晓东1, 李朱萱1, 苟昌勇1, 罗维1, 程振涛1,2, 李攀3   

  1. 1. 贵州大学动物科学学院, 贵阳 550025;
    2. 贵州省动物疫病与兽医公共卫生重点实验室, 贵阳 550025;
    3. 兴义市绿丰水产发展有限责任公司, 兴义 562400
  • 收稿日期:2017-02-20 出版日期:2017-10-20 发布日期:2017-10-20
  • 通讯作者: 程振涛 E-mail:chengzhentao@sohu.com
  • 作者简介:吴璇(1993-),女,贵州纳雍人,本科,研究方向:动物病原学,E-mail:442882610@qq.com
  • 基金资助:

    推进黔西南试验区建设科技合作专项资金项目(黔西南科合[2015-12号);贵州省农业攻关项目"畜禽源主要病原菌药物防控技术创新与示范"(黔科合NY[2014]3042号);贵州省科技创新人才团队项目(黔科合人才团队[2015]4016号)

Isolation and Identification of Aeromonas hydrophila from the Case of Channel Catfish Bowel Disease

WU Xuan1, YUAN Hai-wen1, XIE Xiao-dong1, LI Zhu-xuan1, GOU Chang-yong1, LUO Wei1, CHENG Zhen-tao1,2, LI Pan3   

  1. 1. College of Animal Science, Guizhou University, Guiyang 550025, China;
    2. Key Laboratory of Animal Diseases and Veterinary Public Health in Guizhou Province, Guiyang 550025, China;
    3. Limited Liability Company of Lv Feng for Aquaculture, Xingyi 562400, China
  • Received:2017-02-20 Online:2017-10-20 Published:2017-10-20

摘要:

为确定疑似细菌感染的斑点叉尾鮰病原,本试验对临床病例进行细菌分离培养、生物化学鉴定和分子生物学鉴定、动物回归试验和病原菌药敏试验。结果显示,分离菌为革兰氏阴性杆菌,菌落形态和生化特性与嗜水气单胞菌相符;16S rDNA检测与测序分析结果进一步证实分离菌确为嗜水气单胞菌;动物回归试验显示,分离菌能引起与临床自然病例相似的症状;药敏试验显示,分离菌对喹诺酮类药物敏感,对青霉素类、头孢类药物产生耐药性。结果表明,疑似细菌感染斑点叉尾鮰病例为嗜水气单胞菌感染,可选择喹诺酮类药物进行病例的预防治疗。

关键词: 斑点叉尾鮰; 嗜水气单胞菌; 分离与鉴定

Abstract:

To ensure the cause of suspected bacteria disease for channel catfish, the bacteria from clinical cases were isolated and cultured, then the biochemical and molecular biology assay, and animal regression test were used to identify the species of the isolated bacteria, bacteria medicine sensitive test was used to detect the bacterial drug resistance. The results showed that the bacteria were gram negative bacilli. The colony morphology and biochemical characteristics of the isolated bacteria were same as Aeromonas hydrophila. The sequencing test of the 16S rDNA also confirmed the isolated bacteria were Aeromonas hydrophila. The isolated bacteria could infect the healthy channel catfish and cause the same symptoms as the clinical case. The isolated bacteria were sensitive to floroquinolones and resistant to penicillin and cephalosporin drugs. The results showed that the pathogen of case catfish bowel disease was Aeromonas hydrophila, and the floroquinolones could use to prevent and treat the disease.

Key words: channel catfish; Aeromonas hydrophila; isolation and identification

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