Connectivities with shellfish farms and channel rivers are associated with mortality risk in oysters
| Autor: | Gangnery, A, Normand, J, Duval, C, Cugier, P, Grangeré, K, Petton, B, Petton, S, Orvain, F, Pernet, F |
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| Přispěvatelé: | Laboratoire Environnement Ressources de Normandie (LERN), LITTORAL (LITTORAL), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Laboratoire d'Ecologie Benthique Côtière (LEBCO), Dynamiques des Écosystèmes Côtiers (DYNECO), Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA), Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR), Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM), Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), ANR-12-AGRO-0001,GIGASSAT,Adaptation des écosystèmes ostréicoles au changement global(2012), Dynamiques de l'Environnement Côtier (DYNECO), Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU), Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Institut Français de Recherche pour l'Exploitation de la Mer - Brest (IFREMER Centre de Bretagne) |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
lcsh:SH1-691
animal structures ACL [SDV]Life Sciences [q-bio] fungi Bivalve food and beverages Aquaculture equipment and supplies lcsh:Aquaculture. Fisheries. Angling lcsh:QH540-549.5 bacteria Disease lcsh:Ecology [SDE.BE]Environmental Sciences/Biodiversity and Ecology Epidemiology and health Hydrodynamic connectivity Ecological modelling |
| Zdroj: | Aquaculture Environment Interactions (1869-215X) (Inter-Research Science Center), 2019, Vol. 11, P. 493-506 Aquaculture Environment Interactions Aquaculture Environment Interactions, 2019, 11, pp.493-506. ⟨10.3354/aei00327⟩ Aquaculture Environment Interactions, Inter-reseach science publisher, 2019, 11, pp.493-506. ⟨10.3354/aei00327⟩ Aquaculture Environment Interactions, Vol 11, Pp 493-506 (2019) |
| ISSN: | 1869-215X |
| DOI: | 10.3354/aei00327⟩ |
| Popis: | International audience; Oyster diseases have major consequences on fisheries and aquaculture. In France,young Pacific oysters Crassostrea gigasare severely hit by the ostreid herpesvirus, whereas adultssuffer mortalities presumably caused by pathogenic bacteria. Here we investigated the origin andspread of mortalities that affect both young and adult oysters, and we identified and comparedtheir risk factors. Mortality was monitored in 2 age classes of oysters deployed in early spring at39 sites spread over a 37 km2surface area inside and outside of shellfish farms. Environmentaldata obtained from numerical modelling were used to investigate risk factors. Mortality of youngoysters associated with ostreid herpesvirus occurred in the oyster farming area. Hydrodynamicconnectivity with oyster farms was associated with higher mortality risk, whereas chlorophyll aconcentration was associated with a lower risk. Adult oysters experienced 2 mortality events thatwere associated with different risk factors. The first event, which occurred after deployment andwas probably caused by endogenous pathogens, was mainly associated with connectivity to chan-nel rivers and salinity. The second mortality event observed at the end of the summer was mainlyassociated with connectivity to oyster farms, suggesting pathogen transmission. The risk factorsinvolved in young and adult oyster mortalities were partly different, reflecting distinct origins.Connectivity with oyster farms is a mortality risk factor for both young and adult oysters; thus, dis-ease management strategies that focus on oyster farming areas will impact overall disease risk. |
| Databáze: | OpenAIRE |
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