This study describes columnaris disease from cultured rainbow trout (Oncorhynchus mykiss) fry in Turkey in July, 2004. The infection appeared in rainbow trout fry between 5 and 10 g weight in reared raceways where mortality level reached approximately 30% in a day. The appearance of sick fish, besides characteristic skin discolouration and yellow necrotic areas was seen at the tip of the gills. Gram negative long, thin rods were isolated from the anterior kidney, liver and gills of sick fish. Flavobacterium columnare was identified by morphology, physiology and biochemical testing using conventional methods and the API 20 E test system.
___
Alvarado, V., Stanislwski, D., Boehm, K.H. and Schlotfeldt, H.J. 1989. First isolation of Flexibacter columnaris in eel (Anguilla anguilla) in Northwest Germany (Lowersaxony), Bulletin of the European Association of Fish Pathologists, 4: 96-97.
Austin, B. and Austin, D.A. 1989. Methods for the Microbiological Examination of Fish and Shellfish. Chichester, Ellis Horwood. Chichester, 317 pp.
Austin, B. and Austin, D.A. 1999. Bacterial Fish Pathogens of Farmed and Wild Fish Third (Revised) Edition. Praxis Publishing, Chichester, U.K., 457 pp.
Balta, F. and Cagırgan, H. 1998. Kültürü Yapılan Alabalıklarda (Oncorhynchus mykiss) Görülen Flexibacter columnaris enfeksiyonu. Doğu Anadolu Bölgesi III. Su Ürünleri Sempozyumu. Erzurum: 163- 169.
Bernoth, E.M. and Körting, W. 1989. First report on Flexibacter columnaris in tench (Tinca tinca L.,) in Germany. Bulletin of the European Association of Fish Pathologists, 9(5): 125-126.
Bootsma, R. and Clarx, J.P.M. 1976. Columnaris disease of cultured carp Cyprinus carpio L. characterization of the causative agent. Aquaculture, 7: 371-384.
Clayton, R.D., Stevenson, T.L. and Summerfeld, R.C. 1998. Fin erosion in intensively cultured walleyes and hybrid walleyes. Progressive Fish Culturist., 60(2): 114-118.
Decostere, A., Haesebrouck, F. and Devriese, L.A. 1997. Shieh Medium Supplemented with Tobramycin for Selective Isolation of Flavobacterium columnare (Flexibacter columnaris) from Diseased Fish. Journal of Clinical Microbiology, 35: 322-324.
Decostere, A., Haesebrouck, F., Turnbull, J.F. and Charlier, G. 1999. Influence of water quality and temperature on adhesion of high and low virulence Flavobacterium columnare strains to isolated gill arches. Journal Fish Diseases, 22: 1-9.
Durborow, R.M., Thune, R.L., Hawke, J.P. and Camus, A.C. 1998. Columnaris Disease. A bacterial infection caused by Flavobacterium columnare Southern Reginal. Aquaculture Center Publication No. 479. Stoneville, Mississippi, 4 pp.
Farmer, B. 2004. Improved Methods for the Isolation and Characterization of Flavobacterium Columnare. MSc. thesis, Louisiana: Northwestern State University.
Figueiredo, H.C.P., Klesius, P.H., Arias, C.R., Evans, J., Shoemaker, C.A., Pereira, Jr, D.J., and Peixoto, M.T.D. 2005. Isolation and characterization of strains of Flavobacterium columnare from Brazil. Journal Fish Diseases, 28, 199-204.
Frerichs, G.N. and Roberts, R.J. 1989. The Bacteriology of Teleosts. In: R.J. Roberts (Ed.), Fish Pathology. Bailliere Tindall. London: 289-291.
Holt, J.G., Krieg, N.R., Sneath, P.H.A., Staley, J.T. and Williams, S.T. 1994. Bergey’s Manual of Determinative Bacteriology. Williams&Wilkins, Baltimore, 787 pp.
NCCLS (National Committee for Clinical Laboratory Standard of Antimicrobial Susceptibility) 2001. Testing; Eleventh Information Supplement. NCCLS document M100-S11 NCCLS, Pennsylvania, USA.
Noga, E.J. 2000. Fish Disease Diagnosis and Treatment. Iowa State University Press, South State Aveneu, Ames, Iowa, 367 pp.
Plumb, J. 1999. Health Maintanance and Principal Microbial Diseases of Cultured Fishes. Iowa State University, Iowa, 328 pp.
Rintamaki-Kinnunen, P., Bernardet, J.F. and Bloigu, A. 1997. Yellow pigmented filamentous bacteria connected with farmed salmonid mortality. Aquaculture, 149: 1-14.
Sanders, J.E. and Fryer, J.L. 1988. Bacteria of fish. In: B. Austin (Ed.), Methods in Aquatic Bacteriology. John and Willey Sons. Chichester, London: 240-291
Thomas-Jinu, S. and Goodwin, A.E. 2004a. Morphological and genetic characteristics of Flavobacterium columnare isolates: correlations with virulence in fish. Journal of Fish Disease, 27: 29-35.
Thomas-Jinu, S. and Goodwin, A.E. 2004b. Acute columnaris infection in channel catfish, Ictalurus punctatus (Rafinesque): efficacy of practical treatments for warm water aquaculture ponds. Journal of Fish Diseases, 27: 23-28.
Thune, R. 1993. Bacterial Diseases of Catfish. In: M.W.B. Stoskopf (Ed.), Fish Medicine. Sounders Company London: 524-526.