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Characterization of Shewanella sp. Isolated from Cultured Loach Misgurnus anguillicaudatus

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Title: Characterization of Shewanella sp. Isolated from Cultured Loach Misgurnus anguillicaudatus
Authors: Xiucai Hu
Xue Li
Aijun Lü
Jingfeng Sun
Hongyue Shi
show 3 moreChengxun Chen
Li Li
Kong Xianghui

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Keywords: Misgurnus anguilli caudatus
16S rRNA
antimicrobial susceptibility
LC Subject Headings: Fish culture--Israel.
Fish culture.
Issue Date: 2016
Abstract: Shewanella infection of fish has become a significant problem in aquaculture. In September 2014, a disease was seen in cultured loach (Misgurnus anguillicaudatus) in Xuzhou, central China. A gram-negative bacillus was isolated from the diseased loaches and was tentatively named strain MS1, which was then identified as Shewanella sp. by physiological and biochemical characteristics analysis. The strain MS1 showed highest 16S rRNA sequence identities (98.93%, 98.87%) with the latest two species listed (Shewanella sp. MR7, Shewanella sp. MR4). The phylogenetic tree constructed on the basis of 16S rRNA gene sequences strongly indicated that the strain MS1 is most closely related to the new Shewanella strains MR7 and MR4. The isolate MS1 was confirmed as the pathogen of the infected loaches by experimental reinoculation. The strain was susceptible to most antimicrobial agents tested, but resistant to glycopeptides (vancomycin, teicoplanin) and lincosamide (lincomycin, clindamycin). This is the second report on Shewanella sp. isolated from the diseased loach.
Pages/Duration: 9 pages
ISSN: 0792-156X
Appears in Collections:Volume 68, 2016

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