Archive Institutionnelle de l'Ifremer

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Innes James, Thebaud Olivier, Norman-Lopez Ana, Little L. Richard
In fisheries managed using individual transferable quotas (ITQs) it is generally assumed that quota markets are well-functioning, allowing quota to flow on either a temporary or permanent basis to those able to make best use of it. However, despite an increasing number of fisheries being managed under ITQs, empirical assessments of the quota markets that have actually evolved in these fisheries remain scarce. The Queensland Coral Reef Fin-Fish Fishery (CRFFF) on the Great Barrier Reef has been [...]
2014.   Ecology And Society
Depuis 2008 l’ostréiculture française subit des mortalités massives d'huîtres creuses, Crassostrea gigas, qui menacent les approvisionnements en naissains et, par voie de conséquence, fragilise la filière ostréicole. C’est dans ce contexte qu'a été mis en place à partir de 2010 une opération désignée sous le terme plan de sauvegarde. Cette opération sous forme contractuelle fait intervenir l'Ifremer, des écloseries privées, le Ministère en charge de l'Agriculture et le CNC. Le premier plan de [...]
2014-02.   Rapport de contrat
Wong Annie, Keeley Robert, Carval Thierry, Argo Data Management Team
This document is the Argo quality control manual. Changes from the previous version of the manual are highlighted in yellow. The Argo data system has three levels of quality control. - The first level is the real-time system that performs a set of agreed automatic checks on all float measurements. Real-time data with assigned quality flags are available to users within the 24-48 hrs timeframe. - The second level of quality control is the delayed-mode system. - The third level of quality control [...]
2014.   Rapport
Chatel Amelie, Faucet-Marquis Virginie, Gourlay-France Catherine, Pfohl-Leszkowicz Annie, Vincent-Hubert Francoise
The aim of the present study was to confirm the relevance of studying DNA adduct formation in a field study. In that context, freshwater mussels Dreissena polymorpha, collected in a reference station, were transplanted in different sites with a pollution gradient. After one and two months, mussels were collected and DNA adduct formation was analyzed using the 32P post labelling technique on both gills and digestive glands. In addition, the expression of genes involved in the detoxification [...]
IN PRESS.   Ecotoxicology and Environmental Safety
Suite aux surmortalités observées au sein des élevages de moules touchant à la fois les animaux adultes et les juvéniles au mois de mars, dans les Pertuis Charentais, la Direction Générale de l’Alimentation (DGAl) a adressé une saisine à Ifremer le 04 avril 2014. Celle-ci fait état d’une demande d’appui scientifique et technique d’Ifremer pour tenter d’apporter des éléments de réponse par rapport à cette mortalité subite et importante. L’Ifremer a proposé un projet d’action permettant [...]
2014-09.   Rapport de contrat
Marty Lise, Dieckmann Ulf, Ernande Bruno
Fishing may induce neutral and adaptive evolution affecting life-history traits, and molecular evidence has shown that neutral genetic diversity has declined in some exploited populations. Here we theoretically study the interplay between neutral and adaptive evolution caused by fishing. An individual-based eco-genetic model is devised that includes neutral and functional loci in a realistic ecological setting. In line with theoretical expectations, we find that fishing induces evolution towards [...]
IN PRESS.   Evolutionary Applications
Brosset Pablo, Fromentin Jean-Marc, Ménard Frederic, Pernet Fabrice, Bourdeix Jean-Herve, Bigot Jean-Louis, Van Beveren Elisabeth, Pérez Roda Maria A., Choy Sandrine, Saraux Claire
As condition is a key variable in population dynamics (especially for survival, growth and reproduction), the use of well-defined and accurate fish condition indices is capital. In particular, condition indices (morphometric, bioenergetic and biochemical) have never been compared and validated for the European anchovy Engraulis encrasicolus, the European pilchard Sardina pilchardus and the European sprat Sprattus sprattus. The accuracy of two indirect methods, the morphometric relative condition [...]
2015-01.   Journal of Experimental Marine Biology and Ecology
The family Kareniaceae is mostly known in France for recurrent blooms of Karenia mikimotoi in the Atlantic, English Channel, and Mediterranean Sea and for the unusual green discoloration in the saltwater lagoon of Diana (Corsica) caused by Karlodinium corsicum in April 1994. In terms of diversity, this taxonomic group was long overlooked owing to the difficult identification of these small unarmored dinoflagellates. In this study, thanks to the molecular characterization performed on single [...]
2014-12.   Harmful Algae
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