Is tilapia mortality a latent concern for the aquaculture sector of Bangladesh? An epidemiology and health economic impact study
Tilapia are the 3rd most cultured aquaculture species in global aquaculture, produced in over 170 countries. Bangladesh is the world's fourth-largest tilapia producer and yet only few studies have been conducted to understand factors associated with tilapia mortality and economic losses. Using an on...
| Autores principales: | , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2022
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| Acceso en línea: | https://hdl.handle.net/10568/125721 |
| _version_ | 1855531441957371904 |
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| author | Debnath, Partho Pratim Jansen, Mona Delamare-Deboutteville, Jerome Chadag, Vishnumurthy Mohan Thanh, Dong Ha Rodkhum, Channarong |
| author_browse | Chadag, Vishnumurthy Mohan Debnath, Partho Pratim Delamare-Deboutteville, Jerome Jansen, Mona Rodkhum, Channarong Thanh, Dong Ha |
| author_facet | Debnath, Partho Pratim Jansen, Mona Delamare-Deboutteville, Jerome Chadag, Vishnumurthy Mohan Thanh, Dong Ha Rodkhum, Channarong |
| author_sort | Debnath, Partho Pratim |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Tilapia are the 3rd most cultured aquaculture species in global aquaculture, produced in over 170 countries. Bangladesh is the world's fourth-largest tilapia producer and yet only few studies have been conducted to understand factors associated with tilapia mortality and economic losses. Using an online tilapia epidemiology and health economics survey tool, we surveyed 565 tilapia farms in 15 of Bangladesh's most important tilapia-producing districts. The study examined a range of factors, including geographic locations, farm characteristics, water source, stocking, biosecurity measures, baseline and unusual mortality levels and characteristics. For the period January 2017 to February 2019 a total of 18.2% of farms (103 out of 565) reported having experienced unusual mortality, with an average mortality level of 23.2% (range 3 to 90). A number of factors were found to be significantly associated with reporting of unusual mortality occurrences, including farmer education level, farm size, farm biosecurity measures, baseline mortality level, farmer concern about baseline mortality, dead fish removal frequency and disposal method and antibiotic treatment. Farming region, water source, dead fish removal frequency, and antibiotic treatment were all found to be significantly associated with the level of unusual mortality, with water source and dead fish removal frequency remained significant in the multivariable model. Major clinical signs linked with these mortalities included skin erosions, hemorrhagic lesions, open wounds, skin discoloration, exophthalmos, abdominal distension, swelling, scale protrusion and eye opacification. Based on baseline and unusual mortality in tilapia, a total hidden loss of 875.7 million USD annually was estimated. To ensure the future sustainability of tilapia production, the authors recommend more investigations of unusual mortalities events with collection of metadata and clinical samples for disease diagnostics, coupled with nationwide farmer awareness campaigns. |
| format | Journal Article |
| id | CGSpace125721 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | CGSpace1257212025-12-08T09:54:28Z Is tilapia mortality a latent concern for the aquaculture sector of Bangladesh? An epidemiology and health economic impact study Debnath, Partho Pratim Jansen, Mona Delamare-Deboutteville, Jerome Chadag, Vishnumurthy Mohan Thanh, Dong Ha Rodkhum, Channarong economic impact epidemiology tilapia risk factors fish unusual mortality baseline mortality Tilapia are the 3rd most cultured aquaculture species in global aquaculture, produced in over 170 countries. Bangladesh is the world's fourth-largest tilapia producer and yet only few studies have been conducted to understand factors associated with tilapia mortality and economic losses. Using an online tilapia epidemiology and health economics survey tool, we surveyed 565 tilapia farms in 15 of Bangladesh's most important tilapia-producing districts. The study examined a range of factors, including geographic locations, farm characteristics, water source, stocking, biosecurity measures, baseline and unusual mortality levels and characteristics. For the period January 2017 to February 2019 a total of 18.2% of farms (103 out of 565) reported having experienced unusual mortality, with an average mortality level of 23.2% (range 3 to 90). A number of factors were found to be significantly associated with reporting of unusual mortality occurrences, including farmer education level, farm size, farm biosecurity measures, baseline mortality level, farmer concern about baseline mortality, dead fish removal frequency and disposal method and antibiotic treatment. Farming region, water source, dead fish removal frequency, and antibiotic treatment were all found to be significantly associated with the level of unusual mortality, with water source and dead fish removal frequency remained significant in the multivariable model. Major clinical signs linked with these mortalities included skin erosions, hemorrhagic lesions, open wounds, skin discoloration, exophthalmos, abdominal distension, swelling, scale protrusion and eye opacification. Based on baseline and unusual mortality in tilapia, a total hidden loss of 875.7 million USD annually was estimated. To ensure the future sustainability of tilapia production, the authors recommend more investigations of unusual mortalities events with collection of metadata and clinical samples for disease diagnostics, coupled with nationwide farmer awareness campaigns. 2022-11 2022-11-30T05:12:38Z 2022-11-30T05:12:38Z Journal Article https://hdl.handle.net/10568/125721 en Limited Access application/pdf Elsevier Partho Pratim Debnath, Mona Dverdal Jansen, Jérôme Delamare-Deboutteville, Chadag Vishnumurthy Mohan, Ha Thanh Dong, Channarong Rodkhum, Is tilapia mortality a latent concern for the aquaculture sector of Bangladesh? An epidemiology and health economic impact study, Aquaculture, Volume 560, 2022, 738607, ISSN 0044-8486, https://doi.org/10.1016/j.aquaculture.2022.738607. |
| spellingShingle | economic impact epidemiology tilapia risk factors fish unusual mortality baseline mortality Debnath, Partho Pratim Jansen, Mona Delamare-Deboutteville, Jerome Chadag, Vishnumurthy Mohan Thanh, Dong Ha Rodkhum, Channarong Is tilapia mortality a latent concern for the aquaculture sector of Bangladesh? An epidemiology and health economic impact study |
| title | Is tilapia mortality a latent concern for the aquaculture sector of Bangladesh? An epidemiology and health economic impact study |
| title_full | Is tilapia mortality a latent concern for the aquaculture sector of Bangladesh? An epidemiology and health economic impact study |
| title_fullStr | Is tilapia mortality a latent concern for the aquaculture sector of Bangladesh? An epidemiology and health economic impact study |
| title_full_unstemmed | Is tilapia mortality a latent concern for the aquaculture sector of Bangladesh? An epidemiology and health economic impact study |
| title_short | Is tilapia mortality a latent concern for the aquaculture sector of Bangladesh? An epidemiology and health economic impact study |
| title_sort | is tilapia mortality a latent concern for the aquaculture sector of bangladesh an epidemiology and health economic impact study |
| topic | economic impact epidemiology tilapia risk factors fish unusual mortality baseline mortality |
| url | https://hdl.handle.net/10568/125721 |
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