Journal
AQUACULTURE
Volume 313, Issue 1-4, Pages 156-160Publisher
ELSEVIER
DOI: 10.1016/j.aquaculture.2011.01.018
Keywords
Citrobacter; Grass carp; 16S rDNA; fimC; Ctenopharyngodon idellus
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Funding
- National Natural Science Foundation of China [30800847]
- Natural Science Foundation for Colleges and Universities in Jiangsu Province [08KJD180003]
- Natural Science Foundation of Xuzhou Normal University [KY2007042]
- Qinglan Project of Jiangsu Province
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Citrobacter gastroenteritis became an increasingly significant health problem in intensive aquaculture in China. In this study, three bacterial strains were isolated from the intestinal tract of farmed grass carp (Ctenopharyngodon idellus), and were tentatively numbered C9414, C0520 and C0934, and then they were identified as Citrobacter freundii, C gillenii and C. werkmanii by the biochemical properties and molecular techniques. The strain C9414, namely C. freundii showed the pathogenicity to mice and zebrafish, respectively. Furthermore, the fingerprint patterns with distinct bands of three isolates were generated by single-strand conformation polymorphism (SSCP) analysis. To our knowledge, this is the first report on the bacteria Citrobacter spp. isolated from the intestine of fish in China. (C) 2011 Elsevier BM. All rights reserved.
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