Coculture with Eastern oysters is unlikely to reduce OsHV-1 impacts to farmed Pacific oysters: A modelling approach
In recent decades, the global expansion of Pacific oyster Magallana gigas aquaculture, driven by this species’ adaptability and rapid growth, has coincided with the emergence of novel and virulent microvariants (muvars) of Ostreid herpesvirus 1 (OsHV-1), causing significant industry losses. As a pot...
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Elsevier
2025-03-01
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| Series: | Aquaculture Reports |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352513424006550 |
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| author | Familusi Oluwatosin Adekunle Gorka Bidegain Tal Ben-Horin |
| author_facet | Familusi Oluwatosin Adekunle Gorka Bidegain Tal Ben-Horin |
| author_sort | Familusi Oluwatosin Adekunle |
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| description | In recent decades, the global expansion of Pacific oyster Magallana gigas aquaculture, driven by this species’ adaptability and rapid growth, has coincided with the emergence of novel and virulent microvariants (muvars) of Ostreid herpesvirus 1 (OsHV-1), causing significant industry losses. As a potential alternative, the eastern oyster (Crassostrea virginica) demonstrates lower susceptibility to OsHV-1. This study developed a transmission model for OsHV-1 in mixed oyster aquaculture systems, focusing on the impact of C. virginica introductions on transmission dynamics within established M. gigas systems. The model considers oyster growth, mortality, filtration, viral particle release, and environmental decay. In the absence of experimental data on OsHV-1 infection dynamics in co-culture systems, the model was evaluated using data from monoculture systems. Additionally, the co-culture model was validated for mathematical accuracy and behavior across varying species proportions of M. gigas/C. virginica (90/10, 60/40, 50/50, 40/60, 10/90). Simulation results indicated that introducing C. virginica did not impede OsHV-1 progression; even in the M. gigas/C. virginica 10/90 system, M. gigas mortality reached its maximum, albeit delayed by approximately 10 days. Coculture scenarios did not provide a significant advantage for M. gigas, likely due to OsHV-1 particle saturation in the water column. The model’s performance across diverse scenarios positions it as a valuable tool for understanding waterborne pathogen dynamics in mixed host-species systems, supporting investigations into aquaculture species introductions and their influence on disease dynamics. |
| format | Article |
| id | doaj-art-3b08e5b7d7884f4eabaf757f12adcebb |
| institution | Kabale University |
| issn | 2352-5134 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Aquaculture Reports |
| spelling | doaj-art-3b08e5b7d7884f4eabaf757f12adcebb2025-02-06T05:12:09ZengElsevierAquaculture Reports2352-51342025-03-0140102567Coculture with Eastern oysters is unlikely to reduce OsHV-1 impacts to farmed Pacific oysters: A modelling approachFamilusi Oluwatosin Adekunle0Gorka Bidegain1Tal Ben-Horin2Institut des Sciences de la Mer, L’Université du Québec á Rimouski, Allée des Ursulines, Rimouski, Qc 3300, Canada; Department of Applied Mathematics, University of the Basque Country (UPV/EHU), Plaza Europa 1, Donostia, Gipuzkoa 20018, Spain; Research Centre for Experimental Marine Biology and Biotechnology, Plentzia Marine Station, University of the Basque Country (PiE-UPV/EHU), Areatza Pasealekua, Plentzia, Bizkaia 48620, SpainDepartment of Applied Mathematics, University of the Basque Country (UPV/EHU), Plaza Europa 1, Donostia, Gipuzkoa 20018, Spain; Research Centre for Experimental Marine Biology and Biotechnology, Plentzia Marine Station, University of the Basque Country (PiE-UPV/EHU), Areatza Pasealekua, Plentzia, Bizkaia 48620, Spain; Corresponding author at: Department of Applied Mathematics, University of the Basque Country (UPV/EHU), Plaza Europa 1, Donostia, Gipuzkoa 20018, Spain.North Carolina State University, College of Veterinary Medicine, 303, College Circle, Morehead City, NC 28557, USAIn recent decades, the global expansion of Pacific oyster Magallana gigas aquaculture, driven by this species’ adaptability and rapid growth, has coincided with the emergence of novel and virulent microvariants (muvars) of Ostreid herpesvirus 1 (OsHV-1), causing significant industry losses. As a potential alternative, the eastern oyster (Crassostrea virginica) demonstrates lower susceptibility to OsHV-1. This study developed a transmission model for OsHV-1 in mixed oyster aquaculture systems, focusing on the impact of C. virginica introductions on transmission dynamics within established M. gigas systems. The model considers oyster growth, mortality, filtration, viral particle release, and environmental decay. In the absence of experimental data on OsHV-1 infection dynamics in co-culture systems, the model was evaluated using data from monoculture systems. Additionally, the co-culture model was validated for mathematical accuracy and behavior across varying species proportions of M. gigas/C. virginica (90/10, 60/40, 50/50, 40/60, 10/90). Simulation results indicated that introducing C. virginica did not impede OsHV-1 progression; even in the M. gigas/C. virginica 10/90 system, M. gigas mortality reached its maximum, albeit delayed by approximately 10 days. Coculture scenarios did not provide a significant advantage for M. gigas, likely due to OsHV-1 particle saturation in the water column. The model’s performance across diverse scenarios positions it as a valuable tool for understanding waterborne pathogen dynamics in mixed host-species systems, supporting investigations into aquaculture species introductions and their influence on disease dynamics.http://www.sciencedirect.com/science/article/pii/S2352513424006550ModellingOstreid Herpesvirus 1Co-cultureC. virginicaM. gigas |
| spellingShingle | Familusi Oluwatosin Adekunle Gorka Bidegain Tal Ben-Horin Coculture with Eastern oysters is unlikely to reduce OsHV-1 impacts to farmed Pacific oysters: A modelling approach Aquaculture Reports Modelling Ostreid Herpesvirus 1 Co-culture C. virginica M. gigas |
| title | Coculture with Eastern oysters is unlikely to reduce OsHV-1 impacts to farmed Pacific oysters: A modelling approach |
| title_full | Coculture with Eastern oysters is unlikely to reduce OsHV-1 impacts to farmed Pacific oysters: A modelling approach |
| title_fullStr | Coculture with Eastern oysters is unlikely to reduce OsHV-1 impacts to farmed Pacific oysters: A modelling approach |
| title_full_unstemmed | Coculture with Eastern oysters is unlikely to reduce OsHV-1 impacts to farmed Pacific oysters: A modelling approach |
| title_short | Coculture with Eastern oysters is unlikely to reduce OsHV-1 impacts to farmed Pacific oysters: A modelling approach |
| title_sort | coculture with eastern oysters is unlikely to reduce oshv 1 impacts to farmed pacific oysters a modelling approach |
| topic | Modelling Ostreid Herpesvirus 1 Co-culture C. virginica M. gigas |
| url | http://www.sciencedirect.com/science/article/pii/S2352513424006550 |
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