Pathogenicity of Edwardsiella tarda in Oreochromis mossambicus and treatment by Tamarindus indica seed extract
2021
Seth, Mrinal | Chandrasekaran, Natrajan | Mukherjee, Amitava | Thomas, John
The occurrence of fish diseases contributes to massive economic loss to the aquaculture industry. Edwardsiella tarda, a known pathogenic organism in Oreochromis mossambicus, infects several freshwater fishes. The present study attempts to find an effective treatment against E. tarda infection using natural plant-based bioproducts. Tamarindus indica seed extract was used to study its antibacterial activity against E. tarda. The study revealed that the petroleum ether extract and ethanolic extracts were effective in controlling the infection. It was found to be effective in both in vitro and in vivo. A maximum zone of inhibition, i.e., 9 and 24 mm, was recorded when 40μL of the petroleum ether extract and 40 μL of the ethanolic extract were loaded separately in the well against the test organism. Results showed that the petroleum ether and ethanol extract of T. indica seed were effective in treating the E. tarda infection.
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