Bacteriological and histopathological study of farmed rainbow trout, <i>Oncorhynchus mykiss</i>, in Peru

Mateo, Enrique; Castro, Teresa; Sierralta, Verónica; Mateo, Dante R.

doi:10.1111/jfd.12555

Cited by 8 publications

(2 citation statements)

References 12 publications

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“…Finally, it is important to highlight that fish suffering from high mortalities due to F. psychrophilum infection exhibited bacterial aggregates in several organs (Mateo et al, 2017). Nevertheless, we did not observe the presence of bacteria in any of the histological sections from F. psychrophilum ‐infected sturgeon organs, suggesting the presence of an infection of subacute course.…”

Section: Discussionmentioning

confidence: 99%

First detection of Flavobacterium psychrophilum in juvenile Siberian sturgeons (Acipenser baerii) and description of the pathological findings

Chinchilla,

Vázquez‐Fernández,

Rebollada‐Merino

et al. 2023

Journal of Fish Diseases

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Flavobacterium psychrophilum affects many cultured fish species and is considered one of the most important bacterial pathogens causing substantial economic losses in salmonid aquaculture worldwide. Here, F. psychrophilum was identified by matrix‐assisted laser desorption ionization time‐of‐flight mass spectrometry (MALDI‐TOF MS) and nested PCR as the aetiological agent causing mortality in diseased juvenile Siberian sturgeons (Acipenser baerii) reared on a freshwater fish farm. Diseased sturgeons were lethargic and displayed dark skin pigmentation, increased mucus production and the presence of skin ulcerations and haemorrhages specially on the ventral side and the base of fins. The histological examination of fish revealed proliferative branchitis, ulcerative and necrotizing dermatitis and myositis, lymphoid tissue atrophy, liver and kidney degeneration and thrombosis. To the best of our knowledge, this is the first report describing the infection of Siberian sturgeons by F. psychrophilum. The detection of F. psychrophilum in diseased Siberian sturgeons and the description of the pathological findings observed during the outbreak may contribute to a better understanding of the bacterium pathogenicity and the range of fish species susceptible to infection.

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Section: Discussionmentioning

confidence: 99%

First detection of Flavobacterium psychrophilum in juvenile Siberian sturgeons (Acipenser baerii) and description of the pathological findings

Chinchilla,

Vázquez‐Fernández,

Rebollada‐Merino

et al. 2023

Journal of Fish Diseases

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“…Sin embargo, dada las prácticas sanitarias inadecuadas, la proliferación de patógenos es una constante entre los acuicultores. Según Mateo et al (2016), para el caso de Perú, Yersinia ruckeri, Aeromonas salmonicida y Flavobacterium psychrophilum son los principales agentes infecciosos que amenazan la truchicultura nacional.…”

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Identificación molecular de Flavobacterium psychrophilum y caracterización de las alteraciones cutáneas en la trucha arcoíris (Oncorhynchus mikyss) procedente de Puno, Perú

Sánchez

Sanchez

Sanmiguel

et al. 2020

Rev. investig. vet. Perú

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El presente estudio tuvo por objetivo comparar las lesiones histológicas de truchas arcoíris (Oncorhynchus mikyss) afectadas por la Enfermedad Bacteriana del Agua Fría (BCDW) con muestras de piel de truchas asintomáticas procedentes de centros piscícolas en el Lago Titicaca (Puno, Perú) e identificar la presencia de Flavobacterium psychrophilum mediante PCR convencional. Se trabajó con 13 truchas con lesiones de piel y siete sin lesiones, con tallas superiores a los 25 cm y peso promedio de 350 g. En el PCR para la identificación de F. psychrophilum se utilizaron iniciadores dirigidos a la región 16S ARNr. Molecularmente, ambos grupos de animales resultaron positivos para la presencia de F. psycrophilum. Se puede concluir que este patógeno está presente en la zona sur del país.

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Comparative rapid identification of Salmo salar, Oncorhynchus mykiss, and Oncorhynchus keta components based on loop-mediated isothermal amplification and quantitative polymerase chain reaction

Kong

Xie

et al. 2022

Aquaculture

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Bacteriological and histopathological study of farmed rainbow trout, Oncorhynchus mykiss, in Peru

Cited by 8 publications

References 12 publications

First detection of Flavobacterium psychrophilum in juvenile Siberian sturgeons (Acipenser baerii) and description of the pathological findings

First detection of Flavobacterium psychrophilum in juvenile Siberian sturgeons (Acipenser baerii) and description of the pathological findings

Identificación molecular de Flavobacterium psychrophilum y caracterización de las alteraciones cutáneas en la trucha arcoíris (Oncorhynchus mikyss) procedente de Puno, Perú

Comparative rapid identification of Salmo salar, Oncorhynchus mykiss, and Oncorhynchus keta components based on loop-mediated isothermal amplification and quantitative polymerase chain reaction

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