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International Journal of Fisheries and Aquatic Studies
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(ICV-Poland) Impact Value: 76.37, Impact Factor: RJIF 5.69
E-ISSN: 2347-5129, P-ISSN: 2394-0506

International Journal of Fisheries and Aquatic Studies

2016, Vol. 4, Issue 4, Part A

Isolation, identification, and characterization of Aeromonas hydrophila from juvenile farmed pangasius (Pangasianodon hypophthalmus)


Author(s): Shamsun Nahar, Mohammad Mizanur Rahman, Gias Uddin Ahmed and Md. Ali Reza Faruk

Abstract: Bacterial samples had been isolated from clinically detected diseased juvenile Pangasius, collected from Mymensingh, Bangladesh. Primarily, the isolates were found as Gram-negative, motile, oxidase-positive, fermentative, and O/129 resistant Aeromonas bacteria. The species was exposed as Aeromonas hydrophila from esculin hydrolysis test. Ten isolates of A. hydrophila were identified from eye lesions, kidney, and liver of the infected fishes. Further characterization of A. hydrophila was accomplished using API-20E and antibiotic sensitivity test. Isolates were highly resistant to amoxyclav among ten different antibiotics. All isolates were found as immensely pathogenic to healthy fishes while intraperitoneal injection. Histopathologically, necrotic hematopoietic tissues with pyknotic nuclei, mild hemorrhage, and wide vacuolation in kidney, liver, and muscle were principally noticed due to Aeromonad infection. So far, this is the first full note on characterizing A. hydrophila from diseased farmed Pangasius in Bangladesh. The present findings will provide further direction to develop theranostic strategies of A. hydrophila infection.

Pages: 52-60  |  853 Views  84 Downloads

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How to cite this article:
Shamsun Nahar, Mohammad Mizanur Rahman, Gias Uddin Ahmed and Md. Ali Reza Faruk. Isolation, identification, and characterization of Aeromonas hydrophila from juvenile farmed pangasius (Pangasianodon hypophthalmus). International Journal of Fisheries and Aquatic Studies. 2016; 4(4): 52-60.
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