Mortality of marine mussels Mytilus edulis and M. galloprovincialis: systematic literature review of risk factors and recommendations for future research

Type Article
Date 2021-01
Language English
Author(s) Lupo CoralieORCID1, 2, Bougeard Stéphanie1, Le Bihan Véronique3, Blin Jean Louis4, Allain Gwenhael5, Azéma Patrick6, Benoit Fabienne7, Béchemin Christian2, Bernard Ismaël8, Blachier Philippe9, Brieau Léa10, Danion Morgane1, Garcia Aurélie10, Gervasoni Erika11, Glize Philippe12, Lainé Audrey13, Lapègue SylvieORCID2, 14, Mablouké Cécile11, Poirier Laurence15, Raymond Jean Christophe16, Treilles Michael7, Chauvin Claire1, Le Bouquin Sophie1
Contributor(s) Le Gall Morgane
Affiliation(s) 1 : Anses Laboratoire de Ploufragan‐Plouzané‐Niort Ploufragan, France
2 : Laboratoire de Génétique et Pathologie des Mollusques Marins (SG2M‐LGPMM) IFREMER La Tremblade ,France
3 : Laboratoire d’Economie et de Management de Nantes Atlantique (IAE Economie et Management) Université de Nantes Nantes ,France
4 : Synergie Mer et Littoral Blainville‐sur‐mer ,France
5 : Armeria Lorient, France
6 : Direction Générale de l’Alimentation, Bureau de la Santé Animale Paris,France
7 : Association Française des Directeurs et Cadres de Laboratoires Vétérinaires Publics d’Analyses Paris ,France
8 : Eurêka Modélisation Morlai, France
9 : Centre Régional d’Expérimentation et d’Application Aquacole Le Château d’Oléron ,France
10 : Groupe d’étude des milieux estuariens et littoraux‐Normandie Luc‐sur‐mer ,France
11 : Centre d’étude pour la promotion des activités lagunaires et maritimes Sète, France
12 : Syndicat Mixte pour le Développement de l’Aquaculture et de la Pêche en Pays de la Loire Nantes ,France
13 : Comité National de la Conchyliculture Paris,France
14 : MARBEC IFREMER CNRS IRD Univ Montpellier Montpellier, France
15 : Laboratoire Mer, Molécules, Santé (MMS) Université de Nantes Nantes, France
16 : Comité National des Pêches Maritimes et des Elevages Marins Paris ,France
Source Reviews In Aquaculture (1753-5123) (Wiley), 2021-01 , Vol. 13 , N. 1 , P. 504-536
DOI 10.1111/raq.12484
WOS© Times Cited 15
Keyword(s) eco-epidemiology, environment, husbandry practices, mussel health, pathogens

The aim of this study was to summarise the literature reporting the risk factors for mortality in the mussel species Mytilus edulis and Mytilus galloprovincialis in order to identify potential science‐based solutions to prevent or mitigate mussel mortality outbreaks. We followed the PRISMA methodology: Preferred Reporting Items for Systematic Reviews and Meta‐Analyses. The studied corpus of 91 publications (114 studies) was highly heterogeneous with respect to the methodological approaches used to define or estimate mussel mortality and the related putative risk factors. Results showed that the mortality risk of both mussel species M. edulis and M. galloprovincialis varied across the seasons, increased with an elevated seawater temperature above a thermal threshold of 20 and 24°C, respectively, decreased by protecting mussels from predation, and was associated with the presence of pathogens in M. edulis. For M. galloprovincialis, using mussel spat from the same area where the farming is carried out and farming them together with another mussel species appears to reduce the mortality risk. However, for M. edulis, this could be achieved by using pure crosses and in particular mussel spat having a selected genotype. For wild bed conservation, sand accumulation and anthropogenic sedimentation should be minimised. Our analysis showed that current approaches to this research topic are limited and are unlikely to yield actionable evidence to identify mussel mortality prevention or mitigation strategies. Therefore, recommendations are offered to increase the ability of future eco‐epidemiological research to identify multiple exposures associated with mussel mortality, underpinned by standardised efforts and cooperative initiatives.

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Lupo Coralie, Bougeard Stéphanie, Le Bihan Véronique, Blin Jean Louis, Allain Gwenhael, Azéma Patrick, Benoit Fabienne, Béchemin Christian, Bernard Ismaël, Blachier Philippe, Brieau Léa, Danion Morgane, Garcia Aurélie, Gervasoni Erika, Glize Philippe, Lainé Audrey, Lapègue Sylvie, Mablouké Cécile, Poirier Laurence, Raymond Jean Christophe, Treilles Michael, Chauvin Claire, Le Bouquin Sophie (2021). Mortality of marine mussels Mytilus edulis and M. galloprovincialis: systematic literature review of risk factors and recommendations for future research. Reviews In Aquaculture, 13(1), 504-536. Publisher's official version : , Open Access version :