Associations between farming practices and disease mortality of Pacific oyster Crassostrea gigas in a Mediterranean lagoon

We present the first large-scale, high-resolution spatial and temporal pattern of disease mortality caused by Ostreid herpesvirus 1 (OsHV-1) that has affected Pacific oyster Crassostrea gigas in France every year since 2008, in relation to local farm use. Mortality was monitored in healthy oyster sp...

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Autores principales:	F Pernet, F Lagarde, P Le Gall, E Roque D'Orbcastel
Formato:	article
Lenguaje:	EN
Publicado:	Inter-Research 2014
Materias:	Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/78a47b5b7d0f49aeb600436a49ddaa04
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spelling	oai:doaj.org-article:78a47b5b7d0f49aeb600436a49ddaa042021-11-17T10:09:53ZAssociations between farming practices and disease mortality of Pacific oyster Crassostrea gigas in a Mediterranean lagoon1869-215X1869-753410.3354/aei00096https://doaj.org/article/78a47b5b7d0f49aeb600436a49ddaa042014-05-01T00:00:00Zhttps://www.int-res.com/abstracts/aei/v5/n2/p99-106/https://doaj.org/toc/1869-215Xhttps://doaj.org/toc/1869-7534We present the first large-scale, high-resolution spatial and temporal pattern of disease mortality caused by Ostreid herpesvirus 1 (OsHV-1) that has affected Pacific oyster Crassostrea gigas in France every year since 2008, in relation to local farm use. Mortality was monitored in healthy oyster spat deployed at 106 locations in the Thau Mediterranean lagoon during the epizootic that occurred in spring 2011. We conducted a field survey of farming practices in the areas where the sentinel oysters were placed before the epizootic. We found that the risk of disease mortality in sentinel oysters was higher within the bivalve farming area than outside it, suggesting that the infection pressure is much higher in areas with intensive farming activity. The risk of mortality was higher in farms rearing spat, a developmental stage particularly susceptible to OsHV-1, than in farms rearing adult oysters, which are generally more resistant. Additionally, the mortality risk in farms rearing adult animals was similar to that in empty farms, which suggests that, during the study period, adult oysters did not vector the disease. Interestingly, the mortality risk for sentinel oysters deployed in mussel Mytilus galloprovincialis farms was lower than for those held in oyster farms or empty farms, suggesting that mussels reduced the infection pressure on susceptible oysters.F PernetF LagardeP Le GallE Roque D'OrbcastelInter-ResearcharticleAquaculture. Fisheries. AnglingSH1-691EcologyQH540-549.5ENAquaculture Environment Interactions, Vol 5, Iss 2, Pp 99-106 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5
spellingShingle	Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5 F Pernet F Lagarde P Le Gall E Roque D'Orbcastel Associations between farming practices and disease mortality of Pacific oyster Crassostrea gigas in a Mediterranean lagoon
description	We present the first large-scale, high-resolution spatial and temporal pattern of disease mortality caused by Ostreid herpesvirus 1 (OsHV-1) that has affected Pacific oyster Crassostrea gigas in France every year since 2008, in relation to local farm use. Mortality was monitored in healthy oyster spat deployed at 106 locations in the Thau Mediterranean lagoon during the epizootic that occurred in spring 2011. We conducted a field survey of farming practices in the areas where the sentinel oysters were placed before the epizootic. We found that the risk of disease mortality in sentinel oysters was higher within the bivalve farming area than outside it, suggesting that the infection pressure is much higher in areas with intensive farming activity. The risk of mortality was higher in farms rearing spat, a developmental stage particularly susceptible to OsHV-1, than in farms rearing adult oysters, which are generally more resistant. Additionally, the mortality risk in farms rearing adult animals was similar to that in empty farms, which suggests that, during the study period, adult oysters did not vector the disease. Interestingly, the mortality risk for sentinel oysters deployed in mussel Mytilus galloprovincialis farms was lower than for those held in oyster farms or empty farms, suggesting that mussels reduced the infection pressure on susceptible oysters.
format	article
author	F Pernet F Lagarde P Le Gall E Roque D'Orbcastel
author_facet	F Pernet F Lagarde P Le Gall E Roque D'Orbcastel
author_sort	F Pernet
title	Associations between farming practices and disease mortality of Pacific oyster Crassostrea gigas in a Mediterranean lagoon
title_short	Associations between farming practices and disease mortality of Pacific oyster Crassostrea gigas in a Mediterranean lagoon
title_full	Associations between farming practices and disease mortality of Pacific oyster Crassostrea gigas in a Mediterranean lagoon
title_fullStr	Associations between farming practices and disease mortality of Pacific oyster Crassostrea gigas in a Mediterranean lagoon
title_full_unstemmed	Associations between farming practices and disease mortality of Pacific oyster Crassostrea gigas in a Mediterranean lagoon
title_sort	associations between farming practices and disease mortality of pacific oyster crassostrea gigas in a mediterranean lagoon
publisher	Inter-Research
publishDate	2014
url	https://doaj.org/article/78a47b5b7d0f49aeb600436a49ddaa04
work_keys_str_mv	AT fpernet associationsbetweenfarmingpracticesanddiseasemortalityofpacificoystercrassostreagigasinamediterraneanlagoon AT flagarde associationsbetweenfarmingpracticesanddiseasemortalityofpacificoystercrassostreagigasinamediterraneanlagoon AT plegall associationsbetweenfarmingpracticesanddiseasemortalityofpacificoystercrassostreagigasinamediterraneanlagoon AT eroquedorbcastel associationsbetweenfarmingpracticesanddiseasemortalityofpacificoystercrassostreagigasinamediterraneanlagoon
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Associations between farming practices and disease mortality of Pacific oyster Crassostrea gigas in a Mediterranean lagoon

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