OBJECTIVE Crassostrea gigas oyster extract has been reported to have antioxidant, antihypertensive and lipid-lowering properties that may be useful for treating cardiovascular diseases. This study aimed to evaluate the effect of C. gigas oyster extract on cardiovascular function in tissues from healthy rats. METHODS Single-cell microelectrode and isolated thoracic aortic organ bath studies we...

We report four highly informative multiplex PCRs developed from 12 previously described EST-SSRs in Crassostrea gigas. We evaluated and validated these multiplex PCRs in 12 full-sib families. The average allelic richness and the polymorphism information content (PIC) were 11.1 and 0.811 respectively. The combined power of exclusion was greater than 99.99% using all four multiplex assays. A hund...

Hydrocarbon contamination perturbs the metabolism of the marine bivalve Crassostrea gigas. To understand the response of this organism to hydrocarbon exposure, a suppression subtractive hybridisation method was employed to characterise up- and down-regulated genes during hydrocarbon exposure. The number of differentially expressed gene sequences obtained via this method was 258. The expression ...

Viral gametocytic hypertrophy (VGH) was detected during an investigation of mortalities in Pacific oysters Crassostrea gigas from 2 separate Irish production sites. The basophilic inclusions were observed in the gonad tissue of oysters sampled in August and October 2007. The oysters involved did not show any macroscopic disease signs. Transmission electron microscopy demonstrated the presence o...

The effect of ploidy on the mortality of Crassostrea gigas spat caused by the ostreid herpesvirus (OsHV-1) genotype μVar was investigated at five sites along the Atlantic coast in France in 2011. Sibling diploids and triploids were produced using either unselected or selected OsHV-1-resistant oysters. No significant interactions were found between the factors of environment, genotype and ploidy...

Many species of marine animals have larval stages whose rates of growth in the plankton are regulated by complex combinations of biological and environmental factors. In this study, we focus on the physiological bases that underlie endogenous variation in growth potential of larvae. Our approach was based on experimental crosses of gravid adults from pedigreed families of the Pacific oyster, Cr...

The effects of mercury (Hg) concentrations ranging from 0 (control) to 1024 pg 1-' upon embryogenesis, survival, growth and metamorphosis of Crassostrea gigas (Thunberg) oyster larvae were investigated. Embryogenesis was abnormal in 50 % of the individuals at 11 pg I ' The 48 h LDS" for D-shaped, urnbonate and pediveliger larvae were 33, 115 and 200 pg 1-' respectively. The increase in was part...

Survival of incipient non-indigenous populations is dramatically altered by early predation on new colonisers. These effects can be influenced by morphological traits, such as coloniser size and density. The Australian non-native Pacific Oyster Crassostrea gigas is generally more fecund and faster growing compared to the native Saccostrea glomerata found in the same habitat. It is therefore imp...

Oyster (Crassostrea gigas), the main ingredient of oyster sauce, has a strong umami taste. In this study, three potential peptides, FLNQDEEAR (FR-9), FNKEE (FE-5), and EEFLK (EK-5), were identified screened from alcoholic extracts gigas) using nano-HPLC-MS/MS analysis, iUmami-Scoring Card Method (iUmami-SCM) database molecular docking (MD). Sensory evaluation electronic tongue analys...