Acta Scientific Veterinary Sciences (ISSN: 2582-3183)

Research Article Volume 4 Issue 3

Isolation and Characterization of Bacteriophages Against Aeromonas hydrophila Bacteria Causing Hemorrhagic Septicemia from Striped Catfish (Pangasianodon hypophthalmus)

Tran Thu Thuy1, Luu Huynh Anh2, Hua Thai Nhan3, Ly Thi Thu Lan4 and Nguyen Trong Ngu1*

1Department of Veterinary Medicine, College of Agriculture, Can Tho University, Vietnam
2Department of Animal Science, College of Agriculture, Can Tho University, Vietnam
3Department of Coastal Aquaculture, College of Aquaculture and Fisheries, Can Tho University, Vietnam
4School of Agriculture and Aquaculture, Tra Vinh University, Vietnam

*Corresponding Author: Nguyen Trong Ngu, Department of Veterinary Medicine, College of Agriculture, Can Tho University, Vietnam.

Received: November 11, 2021 Published: December 10, 2021


This study was conducted to isolate and characterize bacteriophages capable of lysing Aeromonas hydrophila causing hemorrhagic septicemia in striped catfish (Pangasianodon hypophthalmus) in ponds in Dong Thap province. A total of 64 bacteriophages (58.2%) were isolated from 110 samples, with the highest value being from sludge samples (100%). When phages were tested in different pH levels (2-10), the above 64 phages were well adjusted to the pH 5-8 after 24 hours at 28oC, representing a rate of more than 60%. In addition, in one hour, 50% of the phages could survive at different temperatures (4oC, 20oC, 60oC, 80oC, 100oC, and 120oC) with no effects on phages observed at 4oC and 20oC. From the pH and temperature tests, six phages (B.N26, B.N16, B.R18, B.B8, B.R22, and B.N1) were selected to evaluate the lysis capacity against A. hydrophila in tap and river water for 21 days in vitro. The results revealed that the bacteriophages could survive better in river water than in tap water. All six phages could be utilized to investigate the effectiveness of treating A. hydrophila-caused hemorrhagic disease in catfish in vivo.

Keywords: Aeromonas hydrophila; Bacteriophage; Isolation; pH; Striped Catfish; Temperature


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Citation: Nguyen Trong Ngu., et al. “Isolation and Characterization of Bacteriophages Against Aeromonas hydrophila Bacteria Causing Hemorrhagic Septicemia from Striped Catfish (Pangasianodon hypophthalmus)". Acta Scientific Veterinary Sciences 4.3 (2022): 56-65.


Copyright: © 2022 Nguyen Trong Ngu., et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


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