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Applied and Environmental Microbiology, February 2002, p. 470-475, Vol. 68, No. 2
0099-2240/02/$04.00+0     DOI: 10.1128/AEM.68.2.470-475.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.

Occurrence and Phenotypic Characterization of Yersinia ruckeri Strains with Biofilm-Forming Capacity in a Rainbow Trout Farm

L. Coquet,1,2 P. Cosette,1,2 L. Quillet,3 F. Petit,3 G.-A. Junter,1,2 and T. Jouenne1,2*

UMR 6522 CNRS,1 Laboratoire de Microbiologie du Froid, Faculté des Sciences de Rouen 76821 Mont-Saint-Aignan,3 Institut Fédératif de Recherches Multidisciplinaires sur les Peptides (IFRMP 23), Mont-Saint-Aignan, France2

Received 6 August 2001/ Accepted 5 November 2001

The presence of Yersinia ruckeri in a French fish farm was investigated. Y. ruckeri was isolated mainly from algae and sediment samples rather than from water. Twenty-two Y. ruckeri isolates were obtained, and three strains were distinguished by enterobacterial repetitive intergenic consensus PCR amplification. These strains were able to adhere to solid supports. This characteristic was correlated with flagellum-mediated motility. Killing experiments showed that sessile cells were more resistant to oxolinic acid than their planktonic counterparts. Our results demonstrate that surface colonization of fish farm tanks by Y. ruckeri biofilms is a potential source of recurrent infection for extended periods of time.


* Corresponding author. Mailing address: UMR 6522 CNRS, Faculté des Sciences de Rouen, 76821 Mont-Saint-Aignan, France. Phone: (33) 2 35 14 66 80. Fax: (33) 2 35 14 67 13. E-mail: thierry.jouenne{at}univ-rouen.fr.


Applied and Environmental Microbiology, February 2002, p. 470-475, Vol. 68, No. 2
0099-2240/02/$04.00+0     DOI: 10.1128/AEM.68.2.470-475.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.




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