Isolation of Flavobacterium psychrophilum in Farmed Rainbow Trout (Oncorhynchus mykiss)

Kubilay, Ayşegül; Altun, Soner; Didinen, Behire Işıl; Ekici, Seçil; Diler, Öznur

doi:10.9775/kvfd.2009.093-a

Cited by 13 publications

(15 citation statements)

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“…In recent years, RTFS is considered to be one of the most serious bacterial fish diseases, and it has reported mortality rates in the range of 10% to 30% and a cumulative mortality rate of up to 70% in rainbow trout fries in Turkey (6,7). In Turkey, previously, oxytetracycline (OXT) and chlortetracycline were the only antimicrobial agents licensed for use in aquaculture.…”

Section: Introductionmentioning

confidence: 99%

Comparison of in vitro and in vivo antibacterial efficacy for the control of Flavobacterium psychrophilum in rainbow trout (Oncorhynchus mykiss)fry: the first genotypical evidence in West Aegean region of Turkey

Boyacıoğlu¹,

Kum²,

Kırkan³

et al. 2015

Turk J Vet Anim Sci

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The aim of this study was to investigate the presence of Flavobacterium psychrophilum and to examine the in vitro and in vivo efficacy of enrofloxacin (ENR), doxycycline (DOX), and florfenicol (FFC) treatment in rainbow trout fry (Oncorhynchus mykiss Walbaum) against F. psychrophilum. A total of 220 naturally infected rainbow trout fry were examined and 26 bacterial isolates were phenotypically and genotypically identified. Minimum inhibitory concentrations (MICs) of ENR, DOX, and FFC were determined. ENR was the most active, with an MIC for 90% of the isolates (MIC 90 ) of 4 µg/mL. DOX was less active, with an MIC 90 of 32 µg/mL for isolates. Approximately 25,000 naturally infected fry were divided as the control, ENR, DOX, and FFC group. ENR and FFC groups were given 10 mg kg -1 day -1 for 10 days, and DOX was given at 30 mg kg -1 day -1 on specified days. Among the isolates, 12% were resistant to ENR, 38% were resistant to DOX, and 19% were resistant to FFC. Despite these in vitro results, ENR and DOX were not effective in rainbow trout fry syndrome treatment. FFC reduced the mortality when compared with the other groups (P < 0.001). This study indicated that in vivo and in vitro results are different from each other.

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Section: Introductionmentioning

confidence: 99%

Comparison of in vitro and in vivo antibacterial efficacy for the control of Flavobacterium psychrophilum in rainbow trout (Oncorhynchus mykiss)fry: the first genotypical evidence in West Aegean region of Turkey

Boyacıoğlu¹,

Kum²,

Kırkan³

et al. 2015

Turk J Vet Anim Sci

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“…7= oedema. Columnaris disease commonly causes serious cutaneous and gill lestions [12,13,14]. Flavobacterium columnare natural infection (in the muscles, tail fins, and gills of Nile tilapia) was confirmed by its isolation on selective medium (cytophaga agar), giving the typical rhizoid shape.…”

Section: Discussionmentioning

confidence: 99%

“…Common names for Columnaris disease are fin rot, saddleback disease, cottonwool disease, and cotton mouth disease. The disease commonly causes serious cutaneous and gill lestions [12,13,14].…”

Section: Introductionmentioning

confidence: 99%

Can Fucoidan Decrease the Mortalities Caused by Columnaris Disease in Nile Tilapia?

Mahgoub¹

2017

WJAR

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Columnaris disease is a serious disease in warm water fish. It is caused by Flavobacterium columnare, a Gram-negative bacterium. In this work, fucoidan was tested for its efficacy in decreasing the mortalities caused by Columnaris disease in Nile tilapia. Consequently, naturally-infected Nile tilapia with Flavobacterium columnare, showing eroded fins, rigid body figure, and ulcerated body surface, was treated with fucoidan (8 gm/kg ration) for 17 days. Flavobacterium columnare infection was confirmed by isolation on selective medium (cytophaga agar), from the skeletal muscle, tails fins, and gills, giving the typical rhizoid shape. It was also confirmed by Flavobacterium columnare specific PCR using selective primers for Flavobacterium columnare 16S ribosomal DNA. Fucoidan caused decreased the mortalities to nil and cured the eroded fins, the ulcerated body surface, and the rigid body figure. Fucoidan also decreased the tissue damage score to reach the normal histological score.

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“…In Turkey, F. psychrophilum has first been isolated from rainbow trout in 1997 (3). Later, the agent has shown wide distribution among various geographical regions of Turkey (6,10,11,17,18,19,20).…”

Section: Discussionmentioning

confidence: 99%

“…The causative agent of the disease has been isolated from most areas of the world such as Australia, Belgium, Canada, Chile, Denmark, Finland, France, Italy, Japan, Korea, Spain, Sweden and United Kingdom (8,12,26) and its economical importance in aquaculture of freshwater salmonid is emphasized all over the world (24,26). In Turkey, F. psychrophilum was isolated from rainbow trout farms in Aegean, Marmara, Mediterranean, Center Anatolia and Eastern Anatolia (11,14,18,19). The first F. psychrophilum isolation from fish with rainbow trout fry has been performed by Balta (3) in Aegean region.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the presence and antibiotic susceptibilities of Flavobacterium psychrophilum in rainbow trout farms (Oncorhynchus mykiss Walbaum, 1792) in The Middle and Eastern Black Sea Regions of

;ONUK¹

2012

Ankara Üniversitesi Veteriner Fakültesi Dergisi

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Isolation of Flavobacterium psychrophilum in Farmed Rainbow Trout (Oncorhynchus mykiss)

Cited by 13 publications

References 0 publications

Comparison of in vitro and in vivo antibacterial efficacy for the control of Flavobacterium psychrophilum in rainbow trout (Oncorhynchus mykiss)fry: the first genotypical evidence in West Aegean region of Turkey

Comparison of in vitro and in vivo antibacterial efficacy for the control of Flavobacterium psychrophilum in rainbow trout (Oncorhynchus mykiss)fry: the first genotypical evidence in West Aegean region of Turkey

Can Fucoidan Decrease the Mortalities Caused by Columnaris Disease in Nile Tilapia?

Investigation of the presence and antibiotic susceptibilities of Flavobacterium psychrophilum in rainbow trout farms (Oncorhynchus mykiss Walbaum, 1792) in The Middle and Eastern Black Sea Regions of

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