Jennifer LaurentUniversité de Bretagne Occidentale | UBO · Institut Universitaire Européen de la Mer (IUEM)
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
Citations since 2016
3 Research Items
Ecology of stress - European flounder - Multidisciplinary approaches to assess the ecological quality of estuaries : Geography of catchments, hydrobiology, chemistry of pollutants, and biology.
February 2019 - September 2020
- Research Assistant
- Assistant as part of the researches projects HQ Fish and POPEST HQ Fish: Impact of the estuarine habitat quality of the Seine on the functioning of a fish population (from the recruitment of juveniles to the reproduction process) POPEST: Vulnerability markers of estuarine flock populations identified by proteogenomics: new tools to estimate the ecological status of estuarine systems
July 2018 - July 2018
- Evaluation of the toxicity of crude oil water-soluble fraction on polar cod embryos and larvae via the study of the protein CYP1A by immunohistochemistry.
September 2016 - June 2018
Institut Universitaire Européen de la Mer
Field of study
- Marine Sciences - Speciality Biology and Marine Ecosystems
The main objective of this study was to improve our knowledge on the responses of fish populations to multistress (diffuse pollution and warming waters) in estuaries. Adult flounders were caught in two estuaries in the Eastern English Channel: the heavily polluted Seine estuary vs the moderately contaminated Canche estuary. Fish samplings were cond...
Climate change, along with environmental pollution, can act synergistically on an organism to amplify adverse effects of exposure. The Arctic is undergoing profound climatic change and an increase in human activity, resulting in a heightened risk of accidental oil spills. Embryos and larvae of polar cod (Boreogadus saida), a key Arctic forage fish...
In the framework of the POPEST project, we are now exploring the potential of new "-omics" methodologies to search for new candidate genes and proteins related to the responses of flounder to estuarine stress. These new technologies are implemented in our team at the level of proteogenomics (i.e. a coupling between high-throughput Transcriptomics and Proteomics approaches); these innovative methods allow to identify thousands of candidate genes-proteins in a single analysis per individual. Molecules differentially expressed according to the nature of environmental stresses, and in relation to the fitness of individuals, could be retained as functional indicators of the estuarine population. This approach could make a major contribution to monitoring the ecological quality of: (1) large estuaries often impacted by complex mixtures of micropollutants of multiple origin, (2) small estuaries with more specific stresses (less complex pollutant cocktails, watersheds often predominantly agricultural characterized by diffuse pesticide contamination and contrasting nitrate loads).
Using a multi-biomarker approach and a combination of active (fish caging at sites of interest) and passive (fish captures in natural environments) monitoring, the SA6-HQFISH project evaluates the impact of the quality of the Seine estuary on the maintenance of fish populations, from the recruitment of juveniles in the estuary to the reproductive phase of the adults. Note that the biological model for this study is the flounder, a flatfish whose life cycle is mainly spent in the estuary.
Elucidate the sensitivity of ELS of polar cod to environmentally relevant concentrations of crude oil ware soluble fraction under two thermal conditions. The project will examine several sub themes such as the biotransformation capacity of polar cod early life stages, cardiotoxicity, bioenergetics, epigenetics and behavioral effects.