Article
Ecology
Gary F. Kett, Marcel A. K. Jansen, Sarah C. Culloty, Sharon A. Lynch
Summary: UV-B radiation is an important regulator in aquatic ecosystems, with both positive and negative effects on organisms. This study demonstrates that UV-B exposure increases mortality in Pacific oysters while reducing the prevalence and intensity of Vibrio aestuarianus infection. These findings have significant implications for the husbandry management of Pacific oysters.
JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY
(2022)
Article
Environmental Sciences
Van Manh Do, Thi Thom Dang, Xuan Thanh Thao Le, Duy Thanh Nguyen, Thi Vi Phung, Dinh Ngo Vu, Hung Viet Pham
Summary: This study examined the quantity, shape, size, and polymer types of microplastics in Pacific oysters cultured in Danang Bay, Vietnam. The findings provide reliable evidence for further studies on the potential health risks associated with microplastics.
MARINE POLLUTION BULLETIN
(2022)
Article
Microbiology
Marion Soree, Francois Delavat, Christophe Lambert, Solen Lozach, Mathias Papin, Bruno Petton, Delphine Passerini, Lionel Degremont, Dominique Hervio Heath
Summary: The study revealed that oysters grown in controlled environments accumulated more Vibrio parahaemolyticus than those grown in intertidal environments, possibly due to immune priming in the latter. However, both types of oysters showed similar depuration rates for V. parahaemolyticus.
ENVIRONMENTAL MICROBIOLOGY
(2022)
Article
Cell Biology
Jiejie Sun, Xiaoqian Lv, Jinyuan Leng, Lingling Wang, Linsheng Song
Summary: In this study, researchers identified a complete mitophagy pathway in the Pacific oyster by screening the components of the pathway and comparing them to those found in humans. This discovery contributes to the understanding of mitochondrial autophagy in mollusks.
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2022)
Article
Fisheries
Davide Nordio, Natalie Khtikian, Sean Andrews, Daniela Bertotto, Karen Leask, Timothy Green
Summary: The study found that bivalves need to adapt to the stressors of ocean acidification and Vibrio infection associated with anthropogenic climate change simultaneously. Phenotypic differences between families were observed, with larger larvae tending to perform better in corrosive seawater.
ICES JOURNAL OF MARINE SCIENCE
(2021)
Article
Fisheries
Marion Soree, Anna Le Meleder, Elise Maurouard, Solen Lozach, Mathias Papin, Christophe Stavrakakis, Corinne Audemard, Dominique Hervio Heath, Lionel Degremont
Summary: In this study, we evaluated the impact of ploidy in Crassostrea gigas oysters on contamination with indigenous Vibrio parahaemolyticus (Vp) and on the accumulation and depuration of Vp in laboratory experiments. The results showed that ploidy did not significantly influence contamination by indigenous Vp, although triploid oysters had a lower contamination trend in November. The pathogenic profiles of indigenous Vp varied between seasons, and depuration was higher during the summer months.
Article
Fisheries
Shangyu Zhai, Ben Yang, Fuqiang Zhang, Qi Li, Shikai Liu
Summary: The Pacific oyster showed high phenotypic variation in resistance to Vibrio alginolyticus infection, with low to moderate heritability estimates for resistance. High correlation coefficients among family estimated breeding values suggest consistent predictive ability of different models for family EBVs. The low genetic and phenotypic correlation with growth traits indicate the feasibility of simultaneous genetic improvement in both growth and resistance traits.
Article
Zoology
Lionel Degremont, Benjamin Morga, Elise Maurouard, Marie-Agnes Travers
Summary: This study optimized breeding programs for dual resistance to OsHV-1 and V. aestuarianus, determining the earliest life stage for oysters to develop disease resistance. Results showed that resistance to OsHV-1 could be evaluated at the larval stage and resistance to V. aestuarianus could be evaluated at the juvenile stage.
JOURNAL OF INVERTEBRATE PATHOLOGY
(2021)
Article
Fisheries
Graham C. Fletcher, Cristina D. Cruz, Duncan I. Hedderley
Summary: The frequency of gastroenteritis outbreaks caused by Vibrio parahaemolyticus has been increasing worldwide, including in New Zealand. Inadequate post-harvest refrigeration may allow the organism to grow to hazardous concentrations. Experimental and modeling studies show that the growth rates of V. parahaemolyticus are best described by log-linear and square root models, suggesting a slower growth rate in New Zealand oysters but the ability to grow at lower temperatures. The recommended minimum storage temperature of 7 degrees Celsius is adequate according to both models.
Article
Fisheries
David Madison, Gary P. Richards, Alexander Sulakvelidze, Chris Langdon
Summary: This study found that specific bacteriophages can reduce the concentration of the bacterial pathogen Vibrio coralliilyticus in seawater, consequently improving the survival and metamorphosis of Pacific oyster larvae.
Article
Environmental Sciences
Lapo Doni, Giovanni Tassistro, Caterina Oliveri, Teresa Balbi, Manon Auguste, Alberto Pallavicini, Laura Canesi, Carla Pruzzo, Luigi Vezzulli
Summary: This study evaluated the role of different planktonic substrates in mediating V. aestuarianus infection of oysters. The results showed that phytoplankton cells and marine aggregates significantly promoted the intake of the bacterium, while chitin particles did not play a significant role in infection.
ENVIRONMENTAL MICROBIOLOGY REPORTS
(2023)
Article
Food Science & Technology
Jiaqi Ma, Lingyun Meng, Sai Wang, Jiao Li, Xiangzhao Mao
Summary: In this study, nonthermal ultrasonic technology was used to inactivate Vibrio parahaemolyticus on raw oysters, and the effects on microbial growth and quality loss of oysters during storage were investigated. The results showed that ultrasonic treatment reduced the number of Vibrio parahaemolyticus in oysters and delayed the growth trend of microorganisms. It also prolonged the shelf life of oysters and maintained their freshness and flavor better during storage.
FOOD RESEARCH INTERNATIONAL
(2023)
Article
Biochemistry & Molecular Biology
Honglin Chen, Xiaohui Cai, Hangna Qiu, Jing Fang, Xinzhong Wu
Summary: This study identified a novel structural CTL (CgLec-4E) in Crassostrea gigas, which has antimicrobial and immune protective functions, and may be involved in food particle recognition. The results enrich understanding of the structures and functions of CTLs in invertebrates.
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
(2021)
Article
Fisheries
Monserrat Lopez-Sanmartin, Rocio Rengel, Manuel Lopez-Lopez, Jose A. Lebron, Ana Molina-Marquez, Ignacio de la Rosa, Pilar Lopez-Cornejo, Alberto Cuesta, Javier Vigara, Rosa Leon
Summary: In this study, the 3D structure and stability of a synthetic all-D-amino acid peptide (D-Caerin) were analyzed and compared with its natural L-enantiomer peptide (Caerin 1.1). The results showed that D-Caerin had higher stability and antimicrobial activity against Vibrio species, which are the causative agents of vibriosis.
Article
Zoology
Daniel Oyanedel, Rodrigo Rojas, Katherina Brokordt, Paulina Schmitt
Summary: Farming intensification and climate change contribute to the emergence of pathogens in aquaculture, particularly in Pacific Oyster Crassostrea gigas. Vibrios, a group of bacteria, are an infectious disease associated with the oyster. The virulence factors of these pathogenic vibrios can be spread through gene transfer. Therefore, it is important to assess risk factors associated with pathogen emergence to prevent mass mortalities in oyster rearing areas. Through the study of vibrios associated with cultured oysters in a non-intensive area, it was found that the Splendidus clade, specifically Vibrio lentus, was the most abundant species. Different vibrio species had varying rates of affecting oyster survival, and the production of enzymes associated with pathogenicity was detected. Monitoring potentially pathogenic groups like vibrios is crucial for managing oyster disease emergence.
JOURNAL OF INVERTEBRATE PATHOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Matthieu Garnier, Gael Bougaran, Marija Pavlovic, Jean-Baptiste Berard, Gregory Carrier, Aurelie Charrier, Fabienne Le Grand, Ewa Lukomska, Catherine Rouxel, Nathalie Schreiber, Jean-Paul Cadoret, Helene Rogniaux, Bruno Saint-Jean
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2016)
Article
Chemistry, Medicinal
Faten Ben Amor, Fatma Elleuch, Hajer Ben Hlima, Matthieu Garnier, Bruno Saint-Jean, Mohamed Barkallah, Chantal Pichon, Slim Abdelkafi, Imen Fendri
Article
Multidisciplinary Sciences
Charlotte Nef, Sebastien Jung, Francis Mairet, Raymond Kaas, Dominique Grizeau, Matthieu Garnier
SCIENTIFIC REPORTS
(2019)
Article
Environmental Sciences
Francis Gohin, Dimitry Van der Zande, Gavin Tilstone, Marieke A. Eleveld, Main Lefebvre, Francoise Andrieux-Loyer, Anouk N. Blauw, Philippe Bryere, David Devreker, Philippe Gamesson, Tania Hernandez Farinas, Yoann Lamaury, Luis Lampert, Heloise Lavigne, Florence Menet-Nedelec, Silvia Pardo, Bertrand Saulquin
REMOTE SENSING OF ENVIRONMENT
(2019)
Article
Oceanography
Fatima Ezzahra Ait Ballagh, Christophe Rabouille, Francoise Andrieux-Loyer, Karline Soetaert, Khalid Elkalay, Karima Khalil
CONTINENTAL SHELF RESEARCH
(2020)
Article
Environmental Sciences
Charlotte Nef, Celine Henry, Elodie Nicolau, Jean-Baptiste Berard, Fabienne Herve, Amandine M. N. Caruana, Raymond Kaas, Francis Mairet, Matthieu Garnier
FRONTIERS IN MARINE SCIENCE
(2020)
Article
Environmental Sciences
Fatima Ezzahra Ait Ballagh, Christophe Rabouille, Francoise Andrieux-Loyer, Karline Soetaert, Bruno Lansard, Bruno Bombled, Gael Monvoisin, Khalid Elkalay, Karima Khalil
Summary: The study highlights the sensitivity of the Mediterranean Sea's productivity to phosphorus inputs from rivers, with a key role of estuarine/deltaic filters in sediment storage and recycling. Intense organic phosphorus mineralization near river mouths, along with the transfer of phosphorus through iron-bound P, were key processes. Deltaic sediments served as an important source of DIP and a sink for solid P burial, showcasing the complex dynamics of phosphorus cycling in coastal seas.
ESTUARIES AND COASTS
(2021)
Article
Environmental Sciences
Hugues Lemonnier, Florence Royer, Florian Caradec, Etienne Lopez, Clarisse Hubert, Emilie Rabiller, Terence Desclaux, Jean-Michel Fernandez, Francoise Andrieux-Loyer
Summary: The study investigates the deposition of toxic metals in crustaceans in tropical aquaculture ponds and finds that spatial variability in physico-chemical conditions can affect the distribution of dissolved metals, leading to the formation of metal precipitates.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Oceanography
Widya Ratmaya, Anniet M. Laverman, Christophe Rabouille, Zahra Akbarzadeh, Francoise Andrieux-Loyer, Laurent Barille, Anne-Laure Barille, Yoann Le Merrer, Philippe Souchu
Summary: This study investigated temporal and spatial variations in benthic nitrogen cycling using field observations, laboratory measurements, and a reactive transport model in Vilaine Bay, France. The results showed that diatom blooms were the main source of organic matter in the sediments, and their rapid decomposition released large amounts of ammonium and dissolved organic nitrogen to the water column, rapidly consuming oxygen at the sediment surface. Summer diatom blooms can lead to bottom water hypoxia.
CONTINENTAL SHELF RESEARCH
(2022)
Article
Chemistry, Medicinal
Marine Remize, Frederic Planchon, Matthieu Garnier, Ai Ning Loh, Fabienne Le Grand, Antoine Bideau, Christophe Lambert, Rudolph Corvaisier, Aswani Volety, Philippe Soudant
Summary: This study investigated the synthesis pathways of polyunsaturated fatty acids (PUFA) in Tisochrysis lutea by tracking the enrichment of a C-13 isotopic marker. The results suggest that T. lutea employs different pathways, including the PKS pathway, to produce PUFA. PKS synthesis appears to be particularly effective in producing long chain PUFA.
Review
Chemistry, Medicinal
Anne Pajot, Gia Hao Huynh, Laurent Picot, Luc Marchal, Elodie Nicolau
Summary: This review presents the biological functions, chemical structure, and functional activities of fucoxanthin in human health. The production methods and extraction technologies are discussed, along with an analysis of the market and future prospects.
Article
Marine & Freshwater Biology
Francoise Andrieux-Loyer, Alain Aminot
Summary: This article explores the adsorption-desorption processes of phosphate on sediments using the Langmuir theory. It describes the theoretical developments and applies them to experiments for determining exchangeable phosphate. The results show that partition coefficients and maximum adsorption capacity vary depending on sediment type and content, and can be used as indicators for examining the potential exchange of phosphate with surrounding water. However, the maximum phosphate adsorption capacity derived from the Langmuir equations has a large confidence interval and is not significantly higher than the exchangeable phosphate.
ESTUARINE COASTAL AND SHELF SCIENCE
(2023)
Article
Marine & Freshwater Biology
Francoise Andrieux-Loyer, Alain Aminot
Summary: This article investigates the kinetics of adsorption-desorption processes of phosphate on sediments using the Langmuir theory. The study has implications for environmental modeling and understanding the cycling of essential nutrients in estuarine and coastal systems.
ESTUARINE COASTAL AND SHELF SCIENCE
(2023)
Article
Geosciences, Multidisciplinary
Laurent Jeanneau, Emilie Jarde, Justine Louis, Alexandrine Pannard, Marine Liotaud, Francoise Andrieux-Loyer, Gerard Gruau, Florian Caradec, Emilie Rabiller, Nathalie Lebris, Anniet Laverman
Summary: The origin of sedimentary organic matter (SOM) is considered a driving factor for SOM reactivity. A study quantified the relationship between isotopic and lipid composition of SOM and benthic nutrient fluxes in 200 intertidal mudflats along the Brittany coast (France). The origin of SOM explained 24% and 31% of the variance in NH4+ and PO43- fluxes, respectively. NH4+ fluxes were driven by uptake of dissolved anthropogenic N by phytoplankton, while PO43- fluxes were driven by sedimentation of particulate P through agricultural soil erosion.
COMPTES RENDUS GEOSCIENCE
(2023)
Article
Geosciences, Multidisciplinary
Justine Louis, Laurent Jeanneau, Francoise Andrieux-Loyer, Gerard Gruau, Florian Caradec, Nathalie Lebris, Marion Chorin, Emilie Jarde, Emilie Rabiller, Christophe Petton, Guillaume Bouger, Patrice Petitjean, Anniet M. Laverman
Summary: The study conducted a broad sampling program on the Brittany coast in the spring of 2019 to assess how surface sediment characteristics affect the benthic effluxes of ammonium and phosphate, revealing the driving factors behind these nutrient fluxes. Results showed that different sediment characteristics lead to variations in ammonium and phosphate fluxes, which are influenced by chemical and biological processes in the sediment.
COMPTES RENDUS GEOSCIENCE
(2021)