Spatial epidemiological modelling of infection by Vibrio aestuarianus shows that connectivity and temperature control oyster mortality
Vibrio aestuarianus infection in oyster populations causes massive mortality, resulting in losses for oyster farmers. Such dynamics result from host-pathogen interactions and contagion through water-borne transmission. To assess the spatiotemporal spread of V. aestuarianus infection and associated o...
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ftarchimer:oai:archimer.ifremer.fr:77459 2023-05-15T15:58:50+02:00 Spatial epidemiological modelling of infection by Vibrio aestuarianus shows that connectivity and temperature control oyster mortality Lupo, Coralie Dutta, Bhagat Lal Petton, Sebastien Ezanno, P Tourbiez, Delphine Travers, Marie-agnes Pernet, Fabrice Bacher, Cedric 2020 application/pdf https://archimer.ifremer.fr/doc/00662/77459/79114.pdf https://archimer.ifremer.fr/doc/00662/77459/79115.pdf https://doi.org/10.3354/aei00379 https://archimer.ifremer.fr/doc/00662/77459/ eng eng Inter-Research Science Center https://archimer.ifremer.fr/doc/00662/77459/79114.pdf https://archimer.ifremer.fr/doc/00662/77459/79115.pdf doi:10.3354/aei00379 https://archimer.ifremer.fr/doc/00662/77459/ info:eu-repo/semantics/openAccess restricted use Aquaculture Environment Interactions (1869-215X) (Inter-Research Science Center), 2020 , Vol. 12 , P. 511-527 Basic reproduction number Crassostrea gigas Hydrodynamics Oyster disease Sensitivity analysis Vibrio aestuarianus text Publication info:eu-repo/semantics/article 2020 ftarchimer https://doi.org/10.3354/aei00379 2021-09-23T20:36:34Z Vibrio aestuarianus infection in oyster populations causes massive mortality, resulting in losses for oyster farmers. Such dynamics result from host-pathogen interactions and contagion through water-borne transmission. To assess the spatiotemporal spread of V. aestuarianus infection and associated oyster mortality at a bay scale, we built a mathematical model informed by experimental infection data at 2 temperatures and spatially dependent marine connectivity of oyster farms. We applied the model to a real system and tested the importance of each factor using a number of modelling scenarios. Results suggest that introducing V. aestuarianus in a fully susceptible adult oyster population in the bay would lead to the mortality of all farmed oysters over 6 to 12 mo, depending on the location in which infection was initiated. The effect of temperature was captured by the basic reproduction number (R0), which was >1 at high seawater temperatures, as opposed to values <1 at low temperatures. At the ecosystem scale, simulations showed the existence of long-distance dispersal of free-living bacteria. The western part of the bay could be reached by bacteria originating from the eastern side, though the spread time was greatly increased. Further developments of the model, including the consideration of the anthropogenic movements of oysters and oyster-specific sensitivity factors, would allow the development of accurate maps of epidemiological risks and help define aquaculture zoning. Article in Journal/Newspaper Crassostrea gigas Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Aquaculture Environment Interactions 12 511 527 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
Basic reproduction number Crassostrea gigas Hydrodynamics Oyster disease Sensitivity analysis Vibrio aestuarianus |
spellingShingle |
Basic reproduction number Crassostrea gigas Hydrodynamics Oyster disease Sensitivity analysis Vibrio aestuarianus Lupo, Coralie Dutta, Bhagat Lal Petton, Sebastien Ezanno, P Tourbiez, Delphine Travers, Marie-agnes Pernet, Fabrice Bacher, Cedric Spatial epidemiological modelling of infection by Vibrio aestuarianus shows that connectivity and temperature control oyster mortality |
topic_facet |
Basic reproduction number Crassostrea gigas Hydrodynamics Oyster disease Sensitivity analysis Vibrio aestuarianus |
description |
Vibrio aestuarianus infection in oyster populations causes massive mortality, resulting in losses for oyster farmers. Such dynamics result from host-pathogen interactions and contagion through water-borne transmission. To assess the spatiotemporal spread of V. aestuarianus infection and associated oyster mortality at a bay scale, we built a mathematical model informed by experimental infection data at 2 temperatures and spatially dependent marine connectivity of oyster farms. We applied the model to a real system and tested the importance of each factor using a number of modelling scenarios. Results suggest that introducing V. aestuarianus in a fully susceptible adult oyster population in the bay would lead to the mortality of all farmed oysters over 6 to 12 mo, depending on the location in which infection was initiated. The effect of temperature was captured by the basic reproduction number (R0), which was >1 at high seawater temperatures, as opposed to values <1 at low temperatures. At the ecosystem scale, simulations showed the existence of long-distance dispersal of free-living bacteria. The western part of the bay could be reached by bacteria originating from the eastern side, though the spread time was greatly increased. Further developments of the model, including the consideration of the anthropogenic movements of oysters and oyster-specific sensitivity factors, would allow the development of accurate maps of epidemiological risks and help define aquaculture zoning. |
format |
Article in Journal/Newspaper |
author |
Lupo, Coralie Dutta, Bhagat Lal Petton, Sebastien Ezanno, P Tourbiez, Delphine Travers, Marie-agnes Pernet, Fabrice Bacher, Cedric |
author_facet |
Lupo, Coralie Dutta, Bhagat Lal Petton, Sebastien Ezanno, P Tourbiez, Delphine Travers, Marie-agnes Pernet, Fabrice Bacher, Cedric |
author_sort |
Lupo, Coralie |
title |
Spatial epidemiological modelling of infection by Vibrio aestuarianus shows that connectivity and temperature control oyster mortality |
title_short |
Spatial epidemiological modelling of infection by Vibrio aestuarianus shows that connectivity and temperature control oyster mortality |
title_full |
Spatial epidemiological modelling of infection by Vibrio aestuarianus shows that connectivity and temperature control oyster mortality |
title_fullStr |
Spatial epidemiological modelling of infection by Vibrio aestuarianus shows that connectivity and temperature control oyster mortality |
title_full_unstemmed |
Spatial epidemiological modelling of infection by Vibrio aestuarianus shows that connectivity and temperature control oyster mortality |
title_sort |
spatial epidemiological modelling of infection by vibrio aestuarianus shows that connectivity and temperature control oyster mortality |
publisher |
Inter-Research Science Center |
publishDate |
2020 |
url |
https://archimer.ifremer.fr/doc/00662/77459/79114.pdf https://archimer.ifremer.fr/doc/00662/77459/79115.pdf https://doi.org/10.3354/aei00379 https://archimer.ifremer.fr/doc/00662/77459/ |
genre |
Crassostrea gigas |
genre_facet |
Crassostrea gigas |
op_source |
Aquaculture Environment Interactions (1869-215X) (Inter-Research Science Center), 2020 , Vol. 12 , P. 511-527 |
op_relation |
https://archimer.ifremer.fr/doc/00662/77459/79114.pdf https://archimer.ifremer.fr/doc/00662/77459/79115.pdf doi:10.3354/aei00379 https://archimer.ifremer.fr/doc/00662/77459/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.3354/aei00379 |
container_title |
Aquaculture Environment Interactions |
container_volume |
12 |
container_start_page |
511 |
op_container_end_page |
527 |
_version_ |
1766394598546997248 |