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102
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102 results for “Crassostrea”
Transgenerational plasticity and the capacity to adapt to low salinity in the eastern oyster, Crassostrea virginica
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Data from: Genetic evidence for the uncoupling of local aquaculture activities and a population of an invasive species – a case study of Pacific oysters (Crassostrea gigas)
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Data from: Detailed insights into pan-European population structure and inbreeding in wild and hatchery Pacific oyster (Crassostrea gigas) populations revealed by genome-wide SNP data
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Data from: Fine-scale temporal analysis of genotype-dependent mortality at settlement in the Pacific oyster Crassostrea gigas
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Data from: Reef-specific patterns of gene expression plasticity in eastern oysters (Crassostrea virginica)
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Data from: Seascape genomics of eastern oyster (Crassostrea virginica) along the Atlantic coast of Canada.
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High temperature induces transcriptomic changes in Crassostrea gigas that hinder progress of ostreid herpes virus (OsHV-1) and promote survival
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Data from: The density and spatial arrangement of the invasive oyster Crassostrea gigas determines its impact on settlement of native oyster larvae
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Data from: Gene expression correlated with delay in shell formation in larval Pacific oysters (Crassostrea gigas) exposed to experimental ocean acidification provides insights into shell formation mechanisms
Despite recent work to characterize gene expression changes associated with larval development in oysters, the mechanism by which the larval shell is first formed is still largely unknown. In Crassostrea gigas, this shell forms within the first 24 hours post fertilization, and it has been demonstrated that changes in water chemistry can cause delays in shell formation, shell deformations and higher mortality rates. In this study, we use the delay in shell formation associated with exposure to pCO2-acidified seawater to identify genes correlated with initial shell deposition. By fitting linear models to gene expression data in ambient and low aragonite saturation treatments, we are able to isolate 37 annotated genes correlated with initial larval shell formation, which can be categorized into 1) ion transporters, 2) shell matrix proteins and 3) protease inhibitors. Clustering of the gene expression data into co-expression networks further supports the result of the linear models, and also implies an important role of dynein motor proteins as transporters of cellular components during the initial shell formation process. This work provides a foundation for further studies on how genetic variation in these identified genes could affect fitness of oyster populations subjected to future environmental changes, such as ocean acidification.
Data from: Calcium transfer across the outer mantle epithelium in the Pacific oyster, Crassostrea gigas
Calcium transport is essential for bivalves to be able to build and maintain their shells. Ionized calcium (Ca2+) is taken up from the environment and eventually transported through the outer mantle epithelium (OME) to the shell growth area. However, the mechanisms behind this process are poorly understood. The objective of the present study was to characterize the Ca2+ transfer performed by the OME of the Pacific oyster, Crassostrea gigas, as well as to develop an Ussing chamber technique for the functional assessment of transport activities in epithelia of marine bivalves. Kinetic studies revealed that the Ca2+ transfer across the OME consists of one saturable and one linear component, of which the saturable component fits best to Michaelis–Menten kinetics and is characterized by a Km of 6.2 mM and a Vmax of 3.3 nM min−1. The transcellular transfer of Ca2+ accounts for approximately 60% of the total Ca2+ transfer across the OME of C. gigas at environmental Ca2+ concentrations. The use of the pharmacological inhibitors: verapamil, ouabain and caloxin 1a1 revealed that voltage-gated Ca2+-channels, plasma-membrane Ca2+-ATPase and Na+/Ca2+-exchanger all participate in the transcellular Ca2+ transfer across the OME and a model for this Ca2+ transfer is presented and discussed.
Fig. 11 in A historical and integrative taxonomic account of mangrove oyster species native to the Atlantic American coast: A re-evaluation of Brazilian Crassostrea species
Fig. 11. The χ2 test of independence of Species, IC and IMC, based on the permutation distribution.
Fig. 8 in A historical and integrative taxonomic account of mangrove oyster species native to the Atlantic American coast: A re-evaluation of Brazilian Crassostrea species
Fig. 8. The χ2 test of independence of Species, RVC and LVC, based on the permutation distribution.
Рис. 8. Характер фрагментации и сохранности створок устрицы (Crassostrea gigas) иЗ раскопа 2 (фракция крупных фагментов). Fig. 8. Fragmentation and preservation patterns of valves of the giant oyster (Crassostrea gigas) from excavation 2 (fraction of large fragments). in Mollusks from the shell-midden of the Telyakovskogo 2 site in southern Primorye (Yankovskaya culture), their paleoecology and role in paleoeconomy
Рис. 8. Характер фрагментации и сохранности створок устрицы (Crassostrea gigas) иЗ раскопа 2 (фракция крупных фагментов). Fig. 8. Fragmentation and preservation patterns of valves of the giant oyster (Crassostrea gigas) from excavation 2 (fraction of large fragments).
Data from: Population genomics shed light on the demographic and adaptive histories of European invasion in the Pacific oyster, Crassostrea gigas
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Data from: Environmental stress increases selection against and dominance of deleterious mutations in inbred families of the Pacific oyster Crassostrea gigas
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Data from: The neuroendocrine immunomodulatory axis-like pathway mediated by circulating haemocytes in pacific oyster Crassostrea gigas
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Data from: Gene expression correlated with delay in shell formation in larval Pacific oysters (Crassostrea gigas) exposed to experimental ocean acidification provides insights into shell formation mechanisms
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Data from: Calcium transfer across the outer mantle epithelium in the Pacific oyster, Crassostrea gigas
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Additive transcriptomic variation associated with reproductive traits suggest local adaptation in a recently settled population of the Pacific oyster, Crassostrea gigas
GEO Series GSE66103. Magallana gigas. 177 samples. Type: Expression profiling by array.
Transcriptome response to salinity stress in the Pacific oyster Crassostrea gigas
GEO Series GSE38022. Magallana gigas. 2 samples. Type: Expression profiling by high throughput sequencing.
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