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Pathogenicity of Edwardsiella tarda to Anguilla marmorata | Syafitrianto | AgriSains

Pathogenicity of Edwardsiella tarda to Anguilla marmorata

Irmawan Syafitrianto, Rusaini Rusaini

Abstract


The pathogenicity of warm-water fish bacteria, Edwardsiella tarda in eel (Anguilla marmorata) was investigated.  This study was designed using a completely randomized design (CRD) with three treatments of E. tarda concentration (2.52 × 107, 105, 103 cfu/mL) and three replicates.   Regression analysis showed that the lethal concentration fifty (LC50) of E. tarda in eel was 2.56 × 104 cfu/mL. The mortality of eel in all treatments occurred 24 hours after injection. Clinical signs of disease in infected eel were melanization, inflammation, necrosis, pale liver, exopthalmus, ascites, and petechial haemorrhage.

Keyword: Anguilla marmorata, Edwarsiella tarda, pathogenicity, lethal concentration.


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