Article
Environmental Sciences
Thet Aung, Inayat Batish, Reza Ovissipour
Summary: This study aimed to determine the prevalence of microplastics in eastern oysters in the Chesapeake Bay and optimize digestion methods. The results showed that H2O2 and KOH treatments had the highest digestion recovery, while enzymatic and HCl 5% treatments had the lowest recovery rate. Fragments were the most abundant microplastics found in all three sites, with the highest number in the James River.
Article
Zoology
Joanna S. Griffiths, Kevin M. Johnson, Morgan W. Kelly
Summary: This study identified genetic variation in the performance of eastern oyster larvae under low salinity conditions through a single-generation selection experiment. Pool-sequencing was used to test allele frequency differences at salinity-associated genes, revealing the genetic selection effects on low salinity performance during the larval stage.
INTEGRATIVE AND COMPARATIVE BIOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Lise Vanderkelen, Joris M. Van Herreweghe, Chris W. Michiels
Summary: This study developed a novel tool for detecting and differentiating lysozymes in animal fluids using affinity chromatography with inhibitors. Validation on blue mussels revealed the important role of g-type lysozyme in innate immunity, while the i-type lysozyme showed no contribution.
Article
Biology
Tejashree H. Modak, Robert Literman, Jonathan B. Puritz, Kevin M. Johnson, Erin M. Roberts, Dina Proestou, Ximing Guo, Marta Gomez-Chiarri, Rachel S. Schwartz
Summary: Genomic structural variations are widely observed in the eastern oyster, showing high interindividual variability and potential impacts on gene function; these variations may play a significant role in genetic diversity and evolutionary success.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2021)
Article
Environmental Sciences
Casey A. Craig, David W. Fox, Lei Zhai, Linda J. Walters
Summary: This study quantifies the ability of Eastern oysters to excrete microplastics in their biodeposits, finding that oysters of all sizes can excrete environmental microplastics, with smaller oysters being more efficient. These findings are important for resource managers and contribute to our understanding of microplastic accumulation in wild oyster populations, as well as their implications for oyster consumers.
MARINE POLLUTION BULLETIN
(2022)
Article
Environmental Sciences
David Cannon, Kelly Kibler, Linda Walters, Lisa Chambers
Summary: This study focuses on the short-term and long-term effects of oyster reef restoration on ecosystem services, showing that restored reefs exhibited similar biological and hydrodynamic characteristics as intact reefs within one year, mainly attributed to oyster recruitment and canopy growth.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Biochemistry & Molecular Biology
Kyle A. Sirovy, Kevin M. Johnson, Sandra M. Casas, Jerome F. La Peyre, Morgan W. Kelly
Summary: By conducting a common garden experiment, the study investigates the plastic and evolved responses of Crassostrea virginica to environmental changes and Perkinsus marinus infection. Results show that C. virginica exhibits a highly plastic response to environment across genotypes, but the lack of genetic variation suggests limited capacity for evolved responses.
Article
Fisheries
Ann Arfken, Bongkeun Song, Standish K. Allen, Ryan B. Carnegie
Summary: The study investigated the effects of environmental conditions and oyster phenotypes on the composition and diversity of oyster larval microbiomes. It found significant differences between larval and water microbiomes, with hatchery and spawning having the most impact on microbiome composition. Despite no significant effect on microbiomes, larval developmental stages showed a decrease in species richness and a shift towards a more selective microbiome.
Article
Environmental Sciences
Edgar A. Lopez-Landavery, Clara E. Galindo-Sanchez, Laura L. Lopez-Galindo, Nancy Ramirez-alvarez, Anaid Saavedra-Flores, Gerardo Amador-Cano, Claudia Ventura-Lopez, Pablo San Martin-Del Angel, Rosa I. Hernandez-Herrera
Summary: The Gulf of Mexico is a vital crude oil reserve, with the oyster Crassostrea virginica being an ideal species to study the effects of oil spills on marine invertebrates. This study measured the concentrations of polycyclic aromatic hydrocarbons (PAHs) and aliphatic hydrocarbons (AHs) in sediment, water, and tissues of C. virginica in eight oyster productive areas in the Gulf of Mexico. Significant differences in gene expression related to xenobiotic detoxification were observed between lagoons, with Las Enramadas showing the highest expression levels. This study validates the use of molecular markers to assess the impact of hydrocarbons on oysters in the Southern Gulf of Mexico.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Environmental Sciences
Micheline S. Labrie, Miles A. Sundermeyer, Brian L. Howes
Summary: An analytical/numerical model was developed to predict the spatial distribution of biodeposits in suspended aquaculture systems. The model was validated in shallow estuaries and can be used by oyster growers and environmental managers to assess the effect of organic matter deposition.
ESTUARIES AND COASTS
(2022)
Article
Marine & Freshwater Biology
Dandara Silva Cabral, Laila Carine Campos Medeiros, Bianca Vieira Barbosa Alves, Larissa Souza Passos, Tatiana Miura Pereira, Julia Mercon, Vinicius Davel Castheloge, Adriana Regina Chippari-Gomes
Summary: This study evaluated the toxicity of metals (Fe and Mn) in oysters through various biomarkers. The results showed that high concentrations of Fe and Mn caused physiological and biochemical changes, as well as genetic damage in oysters. This research provides important knowledge and scientific evidence for decision-makers to develop monitoring measures for the exposure of aquatic ecosystems to Fe and Mn.
ESTUARINE COASTAL AND SHELF SCIENCE
(2022)
Article
Environmental Sciences
Tamara Ledoux, Jeff C. Clements, Luc A. Comeau, Gauthier Cervello, Rejean Tremblay, Frederic Olivier, Laurent Chauvaud, Renee Y. Bernier, Simon G. Lamarre
Summary: This study found that the sound produced by human activities has an impact on the behavior and physiology of Eastern oysters. The oysters immediately reduced their valve gape in response to simulated pile driving sound, but not drilling or boating sound. The pile-driving sound also resulted in a reduction of glycogen in the adductor muscle, but not triglyceride.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Biology
Georges Hraoui, Sophie Breton, Gilles Miron, Luc H. Boudreau, Florence Hunter-Manseau, Nicolas Pichaud
Summary: This study investigated the impact of intermittent heat stress on the mitochondrial functions of the eastern oyster, revealing that oysters acclimated to 22.5 degrees C struggled more with heat shocks. However, both acclimated populations showed signs of potential recovery after the second heat shock.
JOURNAL OF EXPERIMENTAL BIOLOGY
(2021)
Article
Food Science & Technology
Dongyang Zhu, Zhen Yuan, Di Wu, Chao Wu, Hesham R. El-Seedi, Ming Du
Summary: Oyster proteins obtained from fresh oysters showed increased anti-diabetic and antioxidant effects after simulated gastrointestinal digestion. The α-glucosidase inhibitory activity, α-amylase inhibitory activity, DPPH radical scavenging activity, and ABTS radical scavenging activity of the oyster protein gastrointestinal digest were significantly increased. Additionally, the degree of hydrolysis, beta-turn structure, fluorescence intensity, free amino acid, and low molecular weight peptide content also increased during simulated gastrointestinal digestion.
FOOD SCIENCE AND HUMAN WELLNESS
(2023)
Article
Green & Sustainable Science & Technology
Melanie Fuoco, Scott Borsum, Zohreh Mazaheri Kouhanestani, Gulnihal Ozbay
Summary: This study examined the impact of oyster aquaculture on the benthic community of Delaware Inland Bays and found no significant effects on polychaetes abundance and richness. Little Assawoman Bay had significantly higher polychaetes numbers and species richness compared to other bays. A bloom of Ulva lactuca in 2016 may have negatively impacted the polychaetes community.