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http://dx.doi.org/10.7847/jfp.2021.34.1.031

Characteristics Comparisons of Edwardsiella tarda Isolated from Cultured Olive Flounder and Eel  

Kim, Eunheui (Department of Aqualife Medicine, Chonnam National University)
Publication Information
Journal of fish pathology / v.34, no.1, 2021 , pp. 31-38 More about this Journal
Abstract
The objective of this study was to determine comparative biochemical characteristics and RAPD (random amplified polymorphic DNA) profiles of 18 strains of Edwardsiella tarda isolated from cultured olive flounder (Paralichthys olivaceus) and eel (Anguilla spp) that showed diseases between 1996 and 2010 in Korea. In terms of biochemical properties, they showed four patterns with differences in citrate degradation and production of H2S and indole. All strains were identified as E. tarda. Characteristics of isolates were not classified according to their host. As a result of PCR with E. tarda-specific primer, EDtT, the same band of about 270 bp was detected in all 18 isolates. However, no specific band was detected in type strains of E. tarda or Edwardsiella ictaluri. As a result of RAPD PCR performed with primer No. 5 and No. 6 of a Ready-To-Go-RAPD kit, the band profile showed clear differences among isolates of olive flounder, isolates of eel, and E. tarda and E. ictaluri type strains. It was possible to organize their characteristics according to the origin of host with possibility to develop tools for pathogen monitoring.
Keywords
RAPD analysis; Edwardsiella tarda; Biochemical Characteristics; 1996~2010;
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