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  • 1
    Publication Date: 2021-05-19
    Description: Las especies Yersinia ruckeri y Edwardsiella sp. son patógenos de importancia económica por la alta morbiletalidad que provocan en la acuicultura. En este trabajo se analiza la frecuencia de aparición y el comportamiento epizootiológico de ambos patógenos en los peces de cultivo en Cuba, en diferentes regiones del país y en sistemas de cultivo extensivo en embalses e intensivo en estanques y jaulas flotantes, del 2006 al 2008. Del total de brotes analizados, estas especies se encontraron en 18 eventos epizoóticos, cuatro en el 2006, 12 en el 2007 y dos en el 2008. Edwardsiella sp. se aisló en 16 de ellos, mientras que Yersinia ruckeri se encontró en nueve. Las especies afectadas fueron Oreochromis sp., Clarias sp. y Micropterus salmoides floridanus. Estos resultados indican que ambos patógenos provocan enfermedadades con importantes pérdidas económicas en Cuba y afectan con más frecuencia a las especies en cultivo intensivo.
    Description: Within Enterobactereaceae family only Yersinia and Edwardsiella genus are considered as fishes pathogens. Yersinia ruckeri and Edwardsiella sp. are the most important pathogens for aquaculture because their high morbility. In this study the frequency of apparition and the epizotiologic behavior of these bacterias in different regions of Cuba and in extensive and intensive culture system during the years 2006-2008 were analized. From the total of the epizootiologic events, these pathogens were found in 18: four in 2006, 12 in 2007 and two in 2008. Edwardsiella species were isolated in 16 and Yersinia ruckeri in nine. The affected species were Oreochromis sp., Clarias sp. and Micropterus salmoides floridanus. These results indicate that both pathogens cause illness with important economic looses in Cuba and that they affect species in intensive culture more frequently.
    Description: Published
    Description: enterobacterias
    Description: Yersinia
    Description: Edwardsiella sp.
    Description: tilapia
    Description: clarias
    Keywords: Aquaculture economics ; Intensive aquaculture ; Fishes ; Morbidity
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed , Article
    Location Call Number Limitation Availability
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  • 2
    Publication Date: 2021-05-19
    Description: El objetivo del estudio fue revisar la identificación de dos posibles cepas de Yersinia ruckeri aisladas de diferentes epizootias, diagnosticadas como septicemia bacteriana en 2009 en tilapia cultivada en jaulas, para esclarecer su papel en el cuadro clínico, ya que en los animales afectados no se observaron los signos característicos de la yersiniosis. Se realizó una amplia batería de pruebas bioquímicas mediante técnicas convencionales. La incubación de la motilidad, del Citrato de Simons y del Voges Proskauer, se hizo por duplicado, una réplica se incubó a 25 ºC y la otra, a 37 ºC, lo que permitió identificar a las cepas como Hafnia alvei, que no es un patógeno reconocido de los organismos acuáticos. Se propone un esquema para diferenciar las cepas de Yersinia ruckeri de las de Hafnia alvei.
    Description: The aim of this study was to check out the identification of two possible Yersinia ruckeri strains isolated from two different epizootics occurred during 2009 in tilapia developed in cages and diagnosed like bacterial septicemia, in orderto explain his role in the illness, since the typical clinical signs of Yersiniosis were not present in the affected animals. A great range of biochemical test battery was made. Motility, Simons´s Citrate and Voges Proskauer tests was made by duplicate and incubated at 25 °C and 37 °C. These result allowed strains identification as Hafnia alvei, that it´s not a recognized aquatic organisms pathogen. A simple biochemical strategy to differentiate Yersinia ruckeri strains from Hafnia alvei is proposed.
    Description: Published
    Description: Yersinia ruckeri
    Description: Tilapia
    Description: Oreochromis sp.
    Description: yersiniosis
    Keywords: Bacterial diseases
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed , Article
    Location Call Number Limitation Availability
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  • 3
    Publication Date: 2021-05-19
    Description: El objetivo del estudio fue revisar la identificación de dos posibles cepas de Yersinia ruckeri aisladas de diferentes epizootias, diagnosticadas como septicemia bacteriana en 2009 en tilapia cultivada en jaulas, para esclarecer su papel en el cuadro clínico, ya que en los animales afectados no se observaron los signos característicos de la yersiniosis. Se realizó una amplia batería de pruebas bioquímicas mediante técnicas convencionales. La incubación de la motilidad, del Citrato de Simons y del Voges Proskauer, se hizo por duplicado, una réplica se incubó a 25 ºC y la otra, a 37 ºC, lo que permitió identificar a las cepas como Hafnia alvei, que no es un patógeno reconocido de los organismos acuáticos. Se propone un esquema para diferenciar las cepas de Yersinia ruckeri de las de Hafnia alvei.
    Description: The aim of this study was to check out the identification of two possible Yersinia ruckeri strains isolated from two different epizootics occurred during 2009 in tilapia developed in cages and diagnosed like bacterial septicemia, in orderto explain his role in the illness, since the typical clinical signs of Yersiniosis were not present in the affected animals. A great range of biochemical test battery was made. Motility, Simons´s Citrate and Voges Proskauer tests was made by duplicate and incubated at 25 °C and 37 °C. These result allowed strains identification as Hafnia alvei, that it´s not a recognized aquatic organisms pathogen. A simple biochemical strategy to differentiate Yersinia ruckeri strains from Hafnia alvei is proposed.
    Description: Published
    Description: Yersinia ruckeri, Tilapia, Oreochromis sp., yersiniosis
    Keywords: Strains ; Biochemical analysis
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed , Article
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
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