|
|
|
|
| |
|
|
| Faillettaz, Robin; Roger, Christophe; Mathieu, Michel; Robin, Jean-paul; Costil, Katherine. |
| The presence of shells of the Atlantic rangia, Rangia cuneata, a brackish-water species native from the Gulf of Mexico also known as gulf wedge clam, was reported in 2017 on the French coasts of the English Channel, in the waterway that connects Caen to the sea. However, no information was available on whether a population of this alien species had successfully established in the region. Here, only empty shells—except for one live individual—were sampled in that waterway, and the sampling was shifted to the nearby marina of Ouistreham, where water is mesohaline (6.89 ± SD 0.06 PSU). In spring 2017, the mean density in the marina reached 110.45 ± 86.08 ind m-2, largely dominating the benthos community. The population was mostly composed of fairly large... |
| Tipo: Text |
Palavras-chave: The Atlantic rangia; Alien species; Normandy (F); Brackish waters; Density; Growth; Reproduction. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00634/74623/74515.pdf |
| |
|
|
| Revel, Messika; Châtel, Amélie; Perrein-ettajani, Hanane; Bruneau, Mélanie; Akcha, Farida; Sussarellu, Rossana; Rouxel, Julien; Costil, Katherine; Decottignies, Priscilla; Cognie, Bruno; Lagarde, Fabienne; Mouneyrac, Catherine. |
| The aim of the present study was to evaluate the presence and potential toxic effects of plastic fragments (<400 μm) of polyethylene and polypropylene on the Pacific oyster Crassostrea gigas. Oysters were exposed to environmentally relevant concentrations (0, 0.008, 10, 100 μg of particles/L) during 10 days, followed by a depuration period of 10 days in clean seawater. Effects of microplastics were evaluated on the clearance rate of organisms, tissue alteration, antioxidant defense, immune alteration and DNA damage. Detection and quantification of microplastics in oyster's tissues (digestive gland, gills and other tissues) and biodeposits using infrared microscopy were also conducted. Microplastics were detected in oyster's biodeposits following... |
| Tipo: Text |
Palavras-chave: Microplastics; Crassostrea gigas; Biodeposits; Biomarkers; Bivalves. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00588/70055/68018.pdf |
| |
|
|
| Soletchnik, Patrick; Lambert, Christian; Costil, Katherine. |
| The purpose of this study is to investigate summer mortality of the cupped oyster, Crassostrea gigas, in relation to culture practices in the traditional oyster production region of Marennes-Oleron (France). Four oyster rearing conditions, varying culture location ("on-" or "off-bottom"), and site depth (65% to 80% daily immersion termed "deep" or 45% to 65%, termed "shallow") were studied to compare biologic performance and maturation status of oysters, in relation to sediment and water column parameters. The most severe mortality occurred in June to July in "on-bottom" reared oysters (25%), as compared with 10% mortality in "off-bottom" cultured oysters. Oysters (shell and meat) grew significantly better when reared "off-bottom" than "on-bottom."... |
| Tipo: Text |
Palavras-chave: Summer mortality; Hydrology; Sediment; Marine ecosystem; Marennes Oleron Bay; Crassostrea gigas. |
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/2005/publication-3171.pdf |
| |
|
|
| Revel, Messika; Lagarde, Fabienne; Perrein-ettajani, Hanane; Bruneau, Mélanie; Akcha, Farida; Sussarellu, Rossana; Rouxel, Julien; Costil, Katherine; Decottignies, Priscilla; Cognie, Bruno; Châtel, Amélie; Mouneyrac, Catherine. |
| The impact of a microplastic (MP) mixture composed of polyethylene (PE) and polypropylene (PP) plastic particles, prepared from commercially available products, was evaluated in blue mussels Mytilus spp. exposed to three environmentally relevant concentrations: 0.008 μg L−1 (low), 10 μg L−1 (medium), and 100 μg L−1 (high). Organisms were exposed for 10 days followed by 10 days of depuration in clean seawater under controlled laboratory conditions. The evaluation of MP effects on mussel clearance rate, tissue structure, antioxidant defenses, immune and digestive parameters, and DNA integrity were investigated while the identification of plastic particles in mussel tissues (gills, digestive gland, and remaining tissues), and biodeposits (feces and... |
| Tipo: Text |
Palavras-chave: Microplastics; Polyethylene; Polypropylene; Mytilus; Oxidative stress; Biomarkers. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00489/60089/63427.pdf |
| |
|
|
| Di Poi, Carole; Costil, Katherine; Bouchart, Valerie; Halm-lemeille, Marie-pierre. |
| Despite a growing scientific attention on ecological impact of emerging pollutants (EPs) such as pharmaceuticals, personal care products, and pesticides, knowledge gaps remain regarding mixture toxicity and effects on aquatic organisms. Several EPs were screened in seawater (Normandy, France), and the ecotoxicity of five compounds, chosen on their occurrence in ecosystems and use worldwide, was assessed and were the biocides methylparaben (MP) and triclosan (TCS), a pesticide degradation product (AMPA), and the pharmaceuticals venlafaxine (VEN) and carbamazepine (CBZ). The acute or sub-chronic toxicity, alone or in binary/ternary mixtures of three of them (CBZ, AMPA, and MP), was assessed on one marine and two freshwater organisms: Crassostrea gigas,... |
| Tipo: Text |
Palavras-chave: Pharmaceuticals; Personal care products; Pesticides; Mixture and single-compound toxicity; Freshwater species; Marine bivalve. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00389/50004/52260.pdf |
| |
|
|
|
