Kevin Tallec

Kevin Tallec
Centre de documentation, de recherche et d'expérimentations sur les pollutions accidentelles des eaux | Cedre

PhD in Marine Biology

About

17
Publications
17,116
Reads
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511
Citations
Additional affiliations
October 2016 - September 2019
Institut Français de Recherche pour l'Exploitation de la Mer
Position
  • PhD Position

Publications

Publications (17)
Article
Tires can release a large number of chemical compounds that are potentially hazardous for aquatic organisms. An ecophysiological system was used to do high-frequency monitoring of individual clearance, respiration rates, and absorption efficiency of juvenile oysters (8 months old) gradually exposed to four concentrations of tire leachates (equivale...
Article
Plastic pollution in marine ecosystems constitutes an important threat to marine life. For vertebrates, macro/microplastics can obstruct and/or transit into the airways and digestive tract whereas nanoplastics (NPs; < 1000 nm) have been observed in non-digestive tissues such as the liver and brain. Whether NPs cross the intestinal epithelium to gai...
Article
Rubber products and debris with specific chemical signatures can release their constitutive compounds into the surrounding environment. We investigated the chemical toxicity of different types of new and used rubber products (tires, crumb rubber granulates, aquaculture rubber bands) on early life stages of a model marine organism, Pacific oyster Cr...
Article
Early life stages (ELS) of numerous marine invertebrates mustcope with man-made contaminants, including plastic debris, during their pelagic phase. Among the diversity of plastic particles, nano-sized debris, known as nanoplastics, can induce effects with severe outcomes in ELS of various biological models, including the Pacific oyster Crassostrea...
Article
Oysters are keystone species that use external fertilization as a sexual mode. The gametes are planktonic and face a wide range of stressors, including plastic litter. Nanoplastics are of increasing concern because their size allows pronounced interactions with biological membranes, making them a potential hazard to marine life. In the present stud...
Article
The dinoflagellate genus Alexandrium comprises species that produce highly potent neurotoxins known as paralytic shellfish toxins (PST), and bioactive extracellular compounds (BEC) of unknown structure and ecological significance. The toxic bloom-forming species, Alexandrium minutum, is distributed worldwide and adversely affects many bivalves incl...
Thesis
Depuis 70 ans, les débris plastiques dont la fin de vie a été négligée par les sociétés humaines s’accumulent dans les océans. L’évaluation des effets engendrés par cette contamination ubiquitaire est une préoccupation majeure, notamment au regard des micro- et potentiels nanoplastiques (MNP ; < 5 mm) du fait de leur biodisponibilité pour la plupar...
Article
Allelochemical interactions are likely to be a contributing factor explaining the success of large blooms of the harmful marine dinoflagellate Alexandrium, however, the physiological mechanisms of allelochemical interactions remain poorly described. Here we investigated the sub-lethal effects (on an hourly scale) of a filtrate containing allelochem...
Article
In the marine environment, most bivalve species base their reproduction on external fertilization. Hence, gametes and young stages face many threats, including exposure to plastic wastes which represent more than 80% of the debris in the oceans. Recently, evidence has been produced on the presence of nanoplastics in oceans, thus motivating new stud...
Article
Full-text available
Marine plastic pollution is a major environmental issue. Given their ubiquitous nature and small dimensions, ingestion of microplastic (MP) and nanoplastic (NP) particles and their subsequent impact on marine life are a growing concern worldwide. Transfers along the trophic chain, including possible translocation, for which the hazards are less und...
Article
Abstract Harmful microalgal blooms are a threat to aquatic organisms, ecosystems and human health. Toxic dinoflagellates of the genus Alexandrium are known to produce paralytic shellfish toxins and to release bioactive extracellular compounds (BECs) with potent cytotoxic, hemolytic, ichtyotoxic and allelopathic activity. Negative allelochemical int...
Article
While the detection and quantification of nano-sized plastic in the environment remains a challenge, the growing number of polymer applications mean that we can expect an increase in the release of nanoplastics into the environment by indirect outputs. Today, very little is known about the impact of nano-sized plastics on marine organisms. Thus, th...
Presentation
Full-text available
International Conference on Microplastic Pollution in the Mediterranean Sea (μMED)
Presentation
Full-text available
Dinoflagellates from the genus Alexandrium have the potential to produce paralytic shellfish toxin (PST) and to release unknown extra-cellular compounds (ECC) with cytotoxic, hemolytic, ichtyotoxic and allelopathic activities. Impacts on organisms are widely reported, although the nature of these ECC remains unidentified. It is not even clear if on...
Presentation
Full-text available
Dinoflagellates from the genus Alexandrium have the potential to produce paralytic shellfish toxin (PST) and extra-cellular compounds (ECC) with cytotoxic, hemolytic, ichtyotoxic and allelopathic activity. The nature of these ECC remains unknown and it is not clear if one or more compounds are involved. ECC impact various organisms and cell types w...

Questions

Question (1)
Question
Hi everyone,
For my PhD, I want to analyze behaviour of nanoparticles in different media (biological semen, environmental media). I used already DLS but with this rich media it's not applicable. So I want to use transmission electronic microscopy to see if nanoparticles present new aggregation state in the different media. Can I put directly a drop of my solution on grid or there are a protocole more complex to analyse this ? 
Thanks

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