Regional monitoring network of the Blue mussel (Mytilus edulis) rearing performances in the Pertuis Charentais sounds (Bay of Biscay). REMOULA network 2000 - 2012

Date 2017-05
Temporal extent 2000 -2012
Author(s) Robert Stephane1, Grizon James2, Soletchnik Patrick1, Le Moine Olivier1, Seugnet Jean-Luc1, Geairon Philippe1, Razet Daniel1, Guilpain Patrice1, Garen Pierre2, Goulletquer PhilippeORCID3
Affiliation(s) 1 : IFREMER, ODE-LITTORAL-LERPC, Station de La Tremblade - Ronce Les Bains F-17390 La Tremblade, France
2 : IFREMER, ODE-LITTORAL-LERPC, Station de La Rochelle – Place Gaby Coll, F-17137 L’Houmeau, France
3 : IFREMER, PDG-DS, Centre Atlantique - Rue de l'Ile d'Yeu, F-44311 Nantes, France
DOI 10.17882/49663
Publisher SEANOE
Keyword(s) time-series, blue mussel, Mytilus edulis, growth, mortality, gametogenesis, biochemistry, network

On a yearly basis, mussel farming produces around 13 000 metric tons of mussel in the Pertuis Charentais sounds (Pertuis Breton et Pertuis d’Antioche). This represents 23% of the Blue mussel (Mytilus edulis) production along the French Atlantic coastline. Production is characterized in this area by to types of growout systems: the ‘bouchot’ type culture using wooden poles(p) and off-shore longlines(l). Environmental conditions are mainly estuarine. Taking into account those cultural practices, the REMOULA monitoring network has been deployed since 2000 to provide baseline information to better understand the Blue mussel (Aiguillon(p) and Filières Pertuis Breton(l)) or trimester (Roulières(p), Marsilly(p), Yves(p), Boyard-bouchot(p) – completed by the stations Saumonards Filières(l) and Filières Chatellaillon 2(l)  (2008 to 2012). 

Between 2000 and 2005 the mussel batches monitoring lasted 12 months whereas it lasted 15 months from 2006 to 2012. The initial batch of mussel is originating from the spat settlement the previous year and calibrated. On the 8 monitoring stations, calibrated mussel batches were deployed into bags (120 mussels/bag). Biometric data are measured during each monthly survey (30 individuals) and a mortality rate estimated. Additional information is obtained through biochemical analysis (proteins, lipids, carbohydrates) on 3 mussel pools of 10 individuals in 2000, 2001, 2002, 2003 and 2004. Moreover gametogenic data are collected on 15 mussels (2003 and 2004).

The data storage is organized using the Quadrige2 system and characterized by individual field campaign. Coastal monitoring data 

Available parameters :

Individual measurement :  length, shell weight, dry meat weight. Width and height at the beginning and the campaign end.

Average measurement : individual weight (3x10 individuals),

Calculated data: Lawrence & Scott indicator, Walne and Mann indicator, meat indicator, mortality rate %

Observations : Pinnotheres and Polydora infestations, parasites.

Gametic status : identification of 8 maturation stages (0, 1, 2, 3A1, 3A2, 3B, 3C, 3D) according to Lubet (1959) and Suarez (2005)

Biochemical data : analytical protocols - Proteins : Lowry et al (1951) modified Razet et al (1976). Lipids : Marsh and Weinstein (1966). Carbohydrates and Glycogen Dubois et al (1956). The shellfish biochemical proximate composition reviewed by Faury, Geairon, Moal, Pouvreau, Razet, Ropert and Soletchnik (2003).

Licence CC-BY
Acknowledgements This project was financially supported by the Section Régionale Conchylicole de Poitou-Charentes, the Poitou-Charentes regional council and the European Regional Development Fund to « Développement Durable de la Pêche et de la Conchyliculture » project from 2008 to 2012.
File Size Format Processing Access
Sampling strategy : monthly (blue) quarterly (orange) on REMOULA network stations. 9 KB IMAGE Open access
Data 1 MB CSV Quality controlled data Open access
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How to cite 

Robert Stephane, Grizon James, Soletchnik Patrick, Le Moine Olivier, Seugnet Jean-Luc, Geairon Philippe, Razet Daniel, Guilpain Patrice, Garen Pierre, Goulletquer Philippe (2017). Regional monitoring network of the Blue mussel (Mytilus edulis) rearing performances in the Pertuis Charentais sounds (Bay of Biscay). REMOULA network 2000 - 2012. SEANOE.