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National and Regional Research Programs

Team 2: Reproduction and development of aquatic organisms: evolution, adaptation, regulations

K4AQUA

K4aqua- bacteria + K4
2012 to 2014

The objective of this project is to evaluate the potential of the antibacterial peptide K4 (FR 0709057) particularly active against marine Vibrio in aquaculture farms. Targeted investigations will test its safety on various marine organisms, its effectiveness in the context of controlled infection and its persistence in the environment.

Works were financed by the Regional Council of Basse Normandie.

PEPTISAN

2012 to 2014

The PEPTISAN project, labeled by the Pôle Mer Bretagne, aims to identify bioactive molecules for therapeutic uses from organs of the small spotted catshark. It is a joined project between the UMR BOREA, the Station Biologique de Roscoff, the Ecole Nationale Supérieure de Chimie de Rennes and the society KELIA of Saint-Malo. Its objectives are the characterization and preclinical development of molecules involved in the regulation of normal and pathological physiological functions based, in particular, on genomic data and the development of vector systems.

Team 5: Diversity and interactions in coastal ecosystems

TEST

2017 to 2018

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Team 6: Source and transfer of organic matter in aquatic ecosystems

PROCARDYA

Microcosms used during the degradation experiment for the PROCARDYA project
2013 to 2014

Planktonic prokaryotes are a key link in the transfer of organic matter (OM) in oceanic planktonic food webs and determine in part its transfer to the benthic realm. In return, the structure of prokaryotic communities appears to be directly related to the nature and bioavailability of OM, since it has been shown that certain phylotypes are specifically involved in the degradation of certain organic compounds, of different quality and origin. Coastal marine environments are characterized by a great diversity of primary producers.

CHLORINDIC

Sampling in French Caribbean rivers (Guadeloupe) during a field trip.
Photographic detail of a biofilm connoisseur: Sicydium punctatum Perugia, 1896.
2014

Significant contamination by pesticides in some freshwater resources has been highlighted at the beginning of the 2000’s in Guadeloupe and Martinique Islands (French West Indies). Though they were banned from usage in the 1990’s, toxic and persistent molecules are still present in soils, with concentrations reaching 10 mg.kg-1 for the chlordecone (Kepone®), the most worrying organochlorine residue. Driven by water cycle, this terrestrial pollution is progressively transferred into surrounding aquatic ecosystems, affecting both water and biota.

ISLAY

2014 to 2016

Kelps, like higher plants, live in association with microscopic fungi called endophytes. In higher plants, these microorganisms colonize the organs without causing any damage and their beneficial role has been largely demonstrated in recent years. One of the striking features of this association is that it gives to the host a tolerance to abiotic and biotic stresses, especially against pathogens and herbivorous species. This mutualism is finely controlled by the production of structurally different metabolic factors, which origin and mechanisms of action remain to be explored.

Team 7: Biodiversity & Macroecology

IRBAS

2013 to 2015

Une large proportion des réseaux hydrographiques est composée de rivières intermittentes (RIs). Les RIs se caractérisent par une alternance dynamique d’habitats terrestres et aquatiques dans le temps et l’espace. Cette dynamique d’habitats génère une biodiversité unique incluant des espèces aquatiques, amphibies et terrestres. Les RIs offrent aussi de nombreux services écosystémiques, tels que l’atténuation des crues.

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