bactérias com potencial patogênico nos rins e lesões externas de jundiás (rhamdia quelen) cultivados em sistema semi-intensivo pathogenic bacterials in kidney and external lesions of jundiá (rhamdia quelen) in semi-intensive fish culture

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2000
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Abstract
Os objetivos do presente trabalho foram o de realizar o levantamento e a identificação dos gêneros bacterianos presentes nos rins e lesões externas de jundiás (Rhamdia quelen) criados em tanques, e investigar a existência de correlação entre comprimento, peso e sexo dos peixes e temperatura da água, em relação às bactérias isoladas. Para tanto, foram necropsiados 100 jundiás colhidos durante o período de dezembro de 1995 a outubro de 1996. Para exame bacteriológico, foram utilizadas amostras dos rins de todos os peixes e amostras de lesões externas, quando presentes. Em 35 dos 100 peixes necropsiados, foram isolados e identificados 11 diferentes gêneros bacterianos descritos como patogênicos para peixes: Plesiomonas shigelloides(15%), Aeromonas sp. (6%), Flavobacterium sp. (5%), Acinetobacter sp. (4%), Vibrio sp. (4%), Pseudomonas sp. (4%), Micrococcus sp. (3%), Staphylococcus sp. (3%), Edwardsiella tarda (3%), Yersinia ruckeri (2%) e Pasteurella sp. (1%). Não foi evidenciada correlação entre as características dos animais amostrados e temperatura da água em relação ao índice de isolados bacterianos. A bactéria Yersinia ruckeri é pela primeira vez encontrada em peixes no Brasil.
The main purpose of this study was to identify the pathogenic bacterial wich could be found in jundiá (native fish) raised in ponds. This work also verified the relationship between the length of fishes, weigth, sex and water temperature related the number of bacterias isolated. One hundred fish were caught between December of 1995 and October of 1996. The bacterial examination was made from the kidney and also from the external lesion when present. From the one hundred necropsied fish, 35 showed bacterial growth. Eleven different bacterial were identified: Plesiomonas shigelloides(15%), Aeromonas sp. (6%), Flavobacterium sp. (5%), Acinetobacter sp. (4%), Vibrio sp. (4%), Pseudomonas sp. (4%), Micrococcus sp. (3%), Staphylococcus sp. (3%), Edwardsiella tarda (3%), Yersinia ruckeri (2%) e Pasteurella sp. (1%). No correlation was found between fish lenght, weight, sex and water temperature related to the number of isolated bacterias. For the first time Yersinia ruckeri was found in a brazilian fish.
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Authors Sabha Shama, Deodoro Atlante Brandão, Agueda Castagna de Vargas, Mateus Matiuzzi da Costa, Andreia Foletto Pedrozo
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Journal Trials
Year 2000
DOI
10.1590/S0103-84782000000200016
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782000000200016
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