Isolation of Flavobacterium columnare from cultured rainbow trout (Oncorhynchus mykiss) fry in Turkey

KUBİLAY A., ALTUN S., DİLER Ö., Ekici S.

Turkish Journal of Fisheries and Aquatic Sciences, vol.8, no.1, pp.165-169, 2008 (Scopus, TRDizin) identifier identifier

  • Publication Type: Article / Article
  • Volume: 8 Issue: 1
  • Publication Date: 2008
  • Journal Name: Turkish Journal of Fisheries and Aquatic Sciences
  • Journal Indexes: Scopus, TR DİZİN (ULAKBİM)
  • Page Numbers: pp.165-169
  • Keywords: Columnaris disease, Flavobacterium columnare, Isolation, Oncorhynchus mykiss, Phenotypic characteristics
  • Isparta University of Applied Sciences Affiliated: No

Abstract

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. © Central Fisheries Research Institute (CFRI) Trabzon, Turkey and Japan International Cooperation Agency (JICA).