Co-infections of Tilapia Lake Virus, Aeromonas hydrophila and Streptococcus agalactiae in farmed red hybrid tilapia
A high death rate among red hybrid tilapias was observed in a farm in Selangor, Malaysia, in January 2020. The affected fish appeared lethargic, isolated from schooling group, showed loss of appetite, red and haemorrhagic skin, exophthalmia and enlarged gall bladders. Histopathological assessment re...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Multidisciplinary Digital Publishing Institute
2020
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| Online Access: | http://psasir.upm.edu.my/id/eprint/88185/ http://psasir.upm.edu.my/id/eprint/88185/1/ABSTRACT.pdf |
| _version_ | 1848860572859236352 |
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| author | Basri, Lukman Md Nor, Roslindawani Salleh, Annas Md Yasin, Ina Salwany Saad, Mohd Zamri Abd Rahaman, Nor Yasmin Barkham, Timothy Azmai, Mohammad Noor Amal |
| author_facet | Basri, Lukman Md Nor, Roslindawani Salleh, Annas Md Yasin, Ina Salwany Saad, Mohd Zamri Abd Rahaman, Nor Yasmin Barkham, Timothy Azmai, Mohammad Noor Amal |
| author_sort | Basri, Lukman |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | A high death rate among red hybrid tilapias was observed in a farm in Selangor, Malaysia, in January 2020. The affected fish appeared lethargic, isolated from schooling group, showed loss of appetite, red and haemorrhagic skin, exophthalmia and enlarged gall bladders. Histopathological assessment revealed deformation of kidney tubules, and severe congestion with infiltrations of inflammatory cells in the brains and kidneys. Syncytial cells and intracytoplasmic inclusion bodies were occasionally observed in the liver and brain sections. Tilapia Lake Virus (TiLV), Aeromonas hydrophila and Streptococcus agalactiae were identified in the affected fish, either through isolation or through PCR and sequencing analysis. The phylogenetic tree analysis revealed that the TiLV strain in this study was closely related to the previously reported Malaysian strain that was isolated in 2019. On the other hand, A. hydrophila and S. agalactiae were closer to Algerian and Brazilian strains, respectively. The multiple antibiotic resistance index for A. hydrophila and S. agalactiae was 0.50 and 0.25, respectively. Co-infections of virus and bacteria in cultured tilapia is a new threat for the tilapia industry. |
| first_indexed | 2025-11-15T12:47:22Z |
| format | Article |
| id | upm-88185 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T12:47:22Z |
| publishDate | 2020 |
| publisher | Multidisciplinary Digital Publishing Institute |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-881852022-03-10T07:44:40Z http://psasir.upm.edu.my/id/eprint/88185/ Co-infections of Tilapia Lake Virus, Aeromonas hydrophila and Streptococcus agalactiae in farmed red hybrid tilapia Basri, Lukman Md Nor, Roslindawani Salleh, Annas Md Yasin, Ina Salwany Saad, Mohd Zamri Abd Rahaman, Nor Yasmin Barkham, Timothy Azmai, Mohammad Noor Amal A high death rate among red hybrid tilapias was observed in a farm in Selangor, Malaysia, in January 2020. The affected fish appeared lethargic, isolated from schooling group, showed loss of appetite, red and haemorrhagic skin, exophthalmia and enlarged gall bladders. Histopathological assessment revealed deformation of kidney tubules, and severe congestion with infiltrations of inflammatory cells in the brains and kidneys. Syncytial cells and intracytoplasmic inclusion bodies were occasionally observed in the liver and brain sections. Tilapia Lake Virus (TiLV), Aeromonas hydrophila and Streptococcus agalactiae were identified in the affected fish, either through isolation or through PCR and sequencing analysis. The phylogenetic tree analysis revealed that the TiLV strain in this study was closely related to the previously reported Malaysian strain that was isolated in 2019. On the other hand, A. hydrophila and S. agalactiae were closer to Algerian and Brazilian strains, respectively. The multiple antibiotic resistance index for A. hydrophila and S. agalactiae was 0.50 and 0.25, respectively. Co-infections of virus and bacteria in cultured tilapia is a new threat for the tilapia industry. Multidisciplinary Digital Publishing Institute 2020 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/88185/1/ABSTRACT.pdf Basri, Lukman and Md Nor, Roslindawani and Salleh, Annas and Md Yasin, Ina Salwany and Saad, Mohd Zamri and Abd Rahaman, Nor Yasmin and Barkham, Timothy and Azmai, Mohammad Noor Amal (2020) Co-infections of Tilapia Lake Virus, Aeromonas hydrophila and Streptococcus agalactiae in farmed red hybrid tilapia. Animals, 10 (11). pp. 1-12. ISSN 2076-2615 https://www.mdpi.com/2076-2615/10/11/2141 10.3390/ani10112141 |
| spellingShingle | Basri, Lukman Md Nor, Roslindawani Salleh, Annas Md Yasin, Ina Salwany Saad, Mohd Zamri Abd Rahaman, Nor Yasmin Barkham, Timothy Azmai, Mohammad Noor Amal Co-infections of Tilapia Lake Virus, Aeromonas hydrophila and Streptococcus agalactiae in farmed red hybrid tilapia |
| title | Co-infections of Tilapia Lake Virus, Aeromonas hydrophila and Streptococcus agalactiae in farmed red hybrid tilapia |
| title_full | Co-infections of Tilapia Lake Virus, Aeromonas hydrophila and Streptococcus agalactiae in farmed red hybrid tilapia |
| title_fullStr | Co-infections of Tilapia Lake Virus, Aeromonas hydrophila and Streptococcus agalactiae in farmed red hybrid tilapia |
| title_full_unstemmed | Co-infections of Tilapia Lake Virus, Aeromonas hydrophila and Streptococcus agalactiae in farmed red hybrid tilapia |
| title_short | Co-infections of Tilapia Lake Virus, Aeromonas hydrophila and Streptococcus agalactiae in farmed red hybrid tilapia |
| title_sort | co-infections of tilapia lake virus, aeromonas hydrophila and streptococcus agalactiae in farmed red hybrid tilapia |
| url | http://psasir.upm.edu.my/id/eprint/88185/ http://psasir.upm.edu.my/id/eprint/88185/ http://psasir.upm.edu.my/id/eprint/88185/ http://psasir.upm.edu.my/id/eprint/88185/1/ABSTRACT.pdf |