Microbial balance, and triggering of recent mussel mortality events in France: Is there a link?

Type Poster
Date 2017-09
Language English
Other localization http://ammr2017.mbb.univ-montp2.fr/
Author(s) Guesdon Stephane1, Travers Marie-AgnesORCID2, Hervio Heath Dominique3, Derrien Annick4, Genauzeau Sylvie4, Schmitt Anne4, Quintric Laure5, Leroi Laura5, Pepin Jean-Francois1
Affiliation(s) 1 : Ifremer, PDG-ODE-LITTORAL-LERPC, Station de La Tremblade, Avenue de Mus de loup, F-17390 La Tremblade, France
2 : Ifremer, PDG-RBE-SG2M-LGPMM, Station de La Tremblade, Avenue de Mus de loup, F-17390 La Tremblade, France
3 : Ifremer, PDG-RBE-SG2M-LSEM, Centre de Bretagne, ZI de la Pointe du Diable, CS 10070, F-29280 Plouzané, France
4 : Ifremer, PDG-ODE-LITTORAL-LERPC, Station de La Rochelle, Place Gaby Coll, BP 7, F-17137 L'Houmeau, France
5 : Ifremer, PDG-IMN-IDM-RIC, Centre de Bretagne, ZI de la Pointe du Diable, CS 10070, F-29280 Plouzané, France
Meeting AMMR 2017 - 2nd International Symposium on the Advances in Marine Mussel Research. 7th to the 8th of September 2017, Sète, France.
Abstract

Since the spring of 2014, the mussel farming of Charente-Maritime and Vendée (French Atlantic coast) has experienced an unprecedented crisis. Mass mortality events of blue mussel (M. edulis) have affected livestock areas, decimating up to 100% of production in some farming areas. Investigation for infectious agents in moribund mussels revealed presence of bacteria capable of inducing mortalities. In this context, the MORBLEU research project (DPMA-Ifremer agreement) was initiated to explore potentially aggravating factors, associated or correlated with mortality of mussels. The aim of the present study is to support the hypothesis that these mortality episodes can be linked to an evolution of microbial communities. Based on historical data from Ifremer networks and specific monitoring (NGS metabarcoding) we put in prospect mortality events and evolution of phytoplankton and bacterial diversity. The holistic approach carried out in the MORBLEU project will contribute to describe potential links between dynamic equilibrium of the planktonic microbial communities and “health" of mussel livestocks.

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Guesdon Stephane, Travers Marie-Agnes, Hervio Heath Dominique, Derrien Annick, Genauzeau Sylvie, Schmitt Anne, Quintric Laure, Leroi Laura, Pepin Jean-Francois (2017). Microbial balance, and triggering of recent mussel mortality events in France: Is there a link? AMMR 2017 - 2nd International Symposium on the Advances in Marine Mussel Research. 7th to the 8th of September 2017, Sète, France. https://archimer.ifremer.fr/doc/00415/52696/