Aeromonas veronii biovar veronii Infection in Cultured European Seabass (Dicentrarchus labrax) in Türkiye

Süheyla Karataş Steınum; Emre Turgay; Remziye Eda Yardımcı; Terje Marken Steınum

doi:10.18016/ksutarimdoga.vi.1208007

EN TR

Aeromonas veronii biovar veronii Infection in Cultured European Seabass (Dicentrarchus labrax) in Türkiye

Abstract

Fish in aquaculture systems are susceptible to infectious agents as they are kept in a densely populated and often physically restricted environment. Genus Aeromonas include well-known pathogens, and the member Aeromonas veronii has been reported to cause diseases in both humans and animals, either as primary infection or as mixed infection with other pathogens. This study describes a low mortality epizootic caused by Aeromonas veronii biovar veronii in European seabass (Dicentrarchus labrax) farmed in the Aegean Sea. The gills, kidneys and livers of moribund fish were pale. Erythema, haemorrhage and superficial ulcerative lesions were detected on the skin. In addition, petechial haemorrhage was observed on the tongue, maxilla, and operculum. The spleen was enlarged and multiple granulomas were detected in both the kidney and the spleen. Some fish had skin depigmentation, ecchymosis in the liver, and a bloody exudate in the abdominal cavity. The intestinal walls were lined with a clear yellowish fluid. Twenty-nine motile, Gram-negative bacterial isolates were obtained from the internal organs of diseased fish. According to morphology, biochemical properties and 16S rRNA gene sequencing results, all isolates were identified as Aeromonas veronii bv. veronii. All isolates were resistant to amoxicillin and ampicillin, and sensitive to oxytetracycline, enrofloxacin, ciprofloxacin, florfenicol, and flumequine.

Keywords

Türkiye'de Yetiştiriciliği Yapılan Levrek Balıklarında (Dicentrarchus labrax) Aeromonas veronii biovar veronii Enfeksiyonu

Öz

Yetiştiricilik sistemlerindeki balıklar, stok yoğunluğu yüksek ve genellikle fiziksel olarak kısıtlı bir ortamda tutuldukları için enfeksiyöz ajanlara karşı hassastırlar. Aeromonas cinsinin içinde pek çok patojen tür içerdiği bilinmektedir ve bu cins üyelerinden Aeromonas veronii bakterisinin hem insanlarda hem de hayvanlarda birincil enfeksiyon şeklinde veya diğer patojenlerle karışık enfeksiyon olarak hastalıklara neden olduğu bildirilmiştir. Bu çalışma, Ege Denizi'nde yetiştirilen levrek balıklarında (Dicentrarchus labrax) Aeromonas veronii biovar veronii bakterisinin neden olduğu düşük ölüm oranına sahip bir epizootiği tanımlamaktadır. Hasta balıklarda solungaç, böbrek ve karaciğerin solgun olduğu tespit edilmiştir. Deride eritem, hemoraji ve yüzeyel ülseratif lezyonlar görülmüştür. Ayrıca dil, maksilla ve operkulumda peteşiyal hemoraji gözlenmiştir. Dalağın büyüdüğü ve hem böbrek hem de dalakta çoklu granülomalar tespit edilmiştir. Dalak ve böbrekte granülomlar gözlenmiştir. Bazı balıklarda deri depigmentasyonu, karaciğerde ekimoz ve karın boşluğunda kanlı eksüda görülmüştür. Bağırsak duvarları berrak ve sarımsı bir sıvıyla kaplı olarak bulunmuştur. Hasta balıkların iç organlarından 29 adet Gram negatif hareketli bakteri izolatı elde edilmiştir. Morfoloji, biyokimyasal özellikler ve 16S rRNA gen dizileme sonuçlarına göre tüm izolatlar Aeromonas veronii bv. veronii olarak tanımlanmıştır. Elde edilen izolatların amoksisilin ve ampisiline dirençli ve oksitetrasiklin, enrofloksasin, siprofloksasin, florfenikol ve flumekine duyarlı olduğu tespit edilmiştir.

Anahtar Kelimeler

Destekleyen Kurum

The Scientific Research Projects Coordination Unit of Istanbul University

Proje Numarası

FYL-2018-30132

Kaynakça

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Ayrıntılar

Birincil Dil

İngilizce

Konular

Balık Biyolojisi

Bölüm

Araştırma Makalesi

Yazarlar

Süheyla Karataş Steınum ^*
0000-0003-2006-7854
Türkiye

Emre Turgay
0000-0001-9964-3919
Türkiye

Remziye Eda Yardımcı
0000-0001-7737-8739
Türkiye

Terje Marken Steınum
0000-0001-5377-9765
Türkiye

Erken Görünüm Tarihi

14 Haziran 2023

Yayımlanma Tarihi

31 Aralık 2023

Gönderilme Tarihi

23 Kasım 2022

Kabul Tarihi

13 Nisan 2023

Yayımlandığı Sayı

Yıl 2023 Cilt: 26 Sayı: 6

DOI

https://doi.org/10.18016/ksutarimdoga.vi.1208007

IZ

https://izlik.org/JA64RR76TS

Kaynak Göster

RIS / Bibtex

APA

Karataş Steınum, S., Turgay, E., Yardımcı, R. E., & Steınum, T. M. (2023). Aeromonas veronii biovar veronii Infection in Cultured European Seabass (Dicentrarchus labrax) in Türkiye. Kahramanmaraş Sütçü İmam Üniversitesi Tarım ve Doğa Dergisi, 26(6), 1397-1404. https://doi.org/10.18016/ksutarimdoga.vi.1208007