Two-year surveillance of tilapia lake virus (TiLV) reveals its wide circulation in tilapia farms and hatcheries from multiple districts of Bangladesh
© 2020 John Wiley & Sons Ltd Tilapia lake virus (TiLV) is an emerging pathogen in aquaculture, reportedly affecting farmed tilapia in 16 countries across multiple continents. Following an early warning in 2017 that TiLV might be widespread, we executed a surveillance programme on tilapia grow-...
Saved in:
Main Authors: | , , , , , , , , , |
---|---|
Other Authors: | |
Format: | Article |
Published: |
2020
|
Subjects: | |
Online Access: | https://repository.li.mahidol.ac.th/handle/123456789/58927 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Institution: | Mahidol University |
id |
th-mahidol.58927 |
---|---|
record_format |
dspace |
spelling |
th-mahidol.589272020-10-05T10:51:54Z Two-year surveillance of tilapia lake virus (TiLV) reveals its wide circulation in tilapia farms and hatcheries from multiple districts of Bangladesh Partho Pratim Debnath Jerome Delamare-Deboutteville Mona Dverdal Jansen Kornsunee Phiwsaiya Afsana Dalia Md Abir Hasan Saengchan Senapin Chadag Vishnumurthy Mohan Ha Thanh Dong Channarong Rodkhum Suan Sunandha Rajabhat University Chulalongkorn University WorldFish Veterinærinstituttet Mahidol University Thailand National Center for Genetic Engineering and Biotechnology Agricultural and Biological Sciences © 2020 John Wiley & Sons Ltd Tilapia lake virus (TiLV) is an emerging pathogen in aquaculture, reportedly affecting farmed tilapia in 16 countries across multiple continents. Following an early warning in 2017 that TiLV might be widespread, we executed a surveillance programme on tilapia grow-out farms and hatcheries from 10 districts of Bangladesh in 2017 and 2019. Among farms experiencing unusual mortality, eight out of 11 farms tested positive for TiLV in 2017, and two out of seven tested positive in 2019. Investigation of asymptomatic broodstock collected from 16 tilapia hatcheries revealed that six hatcheries tested positive for TiLV. Representative samples subjected to histopathology confirmed pathognomonic lesions of syncytial hepatitis. We recovered three complete genomes of TiLV from infected fish, one from 2017 and two from 2019. Phylogenetic analyses based on both the concatenated coding sequences of 10 segments and only segment 1 consistently revealed that Bangladeshi TiLV isolates formed a unique cluster within Thai clade, suggesting a close genetic relation. In summary, this study revealed the circulation of TiLV in 10 farms and six hatcheries located in eight districts of Bangladesh. We recommend continuing TiLV-targeted surveillance efforts to identify contaminated sources to minimize the countrywide spread and severity of TiLV infection. 2020-10-05T03:51:54Z 2020-10-05T03:51:54Z 2020-01-01 Article Journal of Fish Diseases. (2020) 10.1111/jfd.13235 13652761 01407775 2-s2.0-85089859429 https://repository.li.mahidol.ac.th/handle/123456789/58927 Mahidol University SCOPUS https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85089859429&origin=inward |
institution |
Mahidol University |
building |
Mahidol University Library |
continent |
Asia |
country |
Thailand Thailand |
content_provider |
Mahidol University Library |
collection |
Mahidol University Institutional Repository |
topic |
Agricultural and Biological Sciences |
spellingShingle |
Agricultural and Biological Sciences Partho Pratim Debnath Jerome Delamare-Deboutteville Mona Dverdal Jansen Kornsunee Phiwsaiya Afsana Dalia Md Abir Hasan Saengchan Senapin Chadag Vishnumurthy Mohan Ha Thanh Dong Channarong Rodkhum Two-year surveillance of tilapia lake virus (TiLV) reveals its wide circulation in tilapia farms and hatcheries from multiple districts of Bangladesh |
description |
© 2020 John Wiley & Sons Ltd Tilapia lake virus (TiLV) is an emerging pathogen in aquaculture, reportedly affecting farmed tilapia in 16 countries across multiple continents. Following an early warning in 2017 that TiLV might be widespread, we executed a surveillance programme on tilapia grow-out farms and hatcheries from 10 districts of Bangladesh in 2017 and 2019. Among farms experiencing unusual mortality, eight out of 11 farms tested positive for TiLV in 2017, and two out of seven tested positive in 2019. Investigation of asymptomatic broodstock collected from 16 tilapia hatcheries revealed that six hatcheries tested positive for TiLV. Representative samples subjected to histopathology confirmed pathognomonic lesions of syncytial hepatitis. We recovered three complete genomes of TiLV from infected fish, one from 2017 and two from 2019. Phylogenetic analyses based on both the concatenated coding sequences of 10 segments and only segment 1 consistently revealed that Bangladeshi TiLV isolates formed a unique cluster within Thai clade, suggesting a close genetic relation. In summary, this study revealed the circulation of TiLV in 10 farms and six hatcheries located in eight districts of Bangladesh. We recommend continuing TiLV-targeted surveillance efforts to identify contaminated sources to minimize the countrywide spread and severity of TiLV infection. |
author2 |
Suan Sunandha Rajabhat University |
author_facet |
Suan Sunandha Rajabhat University Partho Pratim Debnath Jerome Delamare-Deboutteville Mona Dverdal Jansen Kornsunee Phiwsaiya Afsana Dalia Md Abir Hasan Saengchan Senapin Chadag Vishnumurthy Mohan Ha Thanh Dong Channarong Rodkhum |
format |
Article |
author |
Partho Pratim Debnath Jerome Delamare-Deboutteville Mona Dverdal Jansen Kornsunee Phiwsaiya Afsana Dalia Md Abir Hasan Saengchan Senapin Chadag Vishnumurthy Mohan Ha Thanh Dong Channarong Rodkhum |
author_sort |
Partho Pratim Debnath |
title |
Two-year surveillance of tilapia lake virus (TiLV) reveals its wide circulation in tilapia farms and hatcheries from multiple districts of Bangladesh |
title_short |
Two-year surveillance of tilapia lake virus (TiLV) reveals its wide circulation in tilapia farms and hatcheries from multiple districts of Bangladesh |
title_full |
Two-year surveillance of tilapia lake virus (TiLV) reveals its wide circulation in tilapia farms and hatcheries from multiple districts of Bangladesh |
title_fullStr |
Two-year surveillance of tilapia lake virus (TiLV) reveals its wide circulation in tilapia farms and hatcheries from multiple districts of Bangladesh |
title_full_unstemmed |
Two-year surveillance of tilapia lake virus (TiLV) reveals its wide circulation in tilapia farms and hatcheries from multiple districts of Bangladesh |
title_sort |
two-year surveillance of tilapia lake virus (tilv) reveals its wide circulation in tilapia farms and hatcheries from multiple districts of bangladesh |
publishDate |
2020 |
url |
https://repository.li.mahidol.ac.th/handle/123456789/58927 |
_version_ |
1763498161027940352 |