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387 results for “Oysters”
Data from: Geohistorical records indicate no impact of the Deepwater Horizon oil spill on oyster body size
Documentation of the near- and long-term effects of the Deepwater Horizon (DWH) oil spill, one of the largest environmental disasters in US history, is still ongoing. We used a novel before-after-control-impact analysis to test the hypothesis that average body size of intertidal populations of the eastern oyster (Crassostrea virginica) inhabiting impacted areas in Louisiana decreased due to increased stress/mortality related to the oil spill. Time-averaged death assemblages of oysters were used to establish a pre-spill baseline of body-size structure for four impacted and four control locations along a 350 km stretch of Louisiana's coastline. Post-spill body sizes were then measured from live oysters at each site in order to evaluate the differences in body size between oiled (i.e. impact) and unoiled (i.e. control) locations before and after the spill. Our results indicate that average body size of oysters remained relatively unchanged after the oil spill. There were also no temporal patterns in temperature, salinity or disease prevalence that could have explained our results. Together, these findings suggest that oysters either recovered rapidly following the immediate impact of the DWH oil spill, or that its impact was not severe enough to influence short-term population dynamics of the oyster beds.
Temporally-balanced selection during development of larval Pacific oysters (Crassostrea gigas) inherently preserves genetic diversity within offspring
<p>Balancing selection is one of the mechanisms which has been proposed to explain the maintenance of genetic diversity in species across generations. For species with large populations and complex life histories, however, heterogeneous selection pressures may create a scenario in which the net effects of selection are balanced across developmental stages. With replicated cultures and a pooled sequencing approach, we show that genotype-dependent mortality in larvae of the Pacific oyster (Crassostrea gigas) is largely temporally dynamic and inconsistently in favor of a single genotype or allelic variant at each locus. Overall, the patterns of genetic change we observe to be taking place are more complex than what would be expected under classical examples of additive or dominant genetic interactions. They are also not easily explained by our current understanding of the effects of genetic load. Collectively, temporally heterogeneous selection pressures across different larval developmental stages may act to maintain genetic diversity in oysters, while also inherently sheltering genetic load within populations.</p>
Data from: Larval development in the Pacific oyster and the impacts of ocean acidification: differential genetic effects in wild and domesticated stocks
<p>The adaptive capacity of marine calcifiers to ocean acidification (OA) is a topic of great interest to evolutionary biologists and ecologists. Previous studies have provided evidence to suggest that larval resilience to high <i>p</i>CO<sub>2</sub> seawater for these species is a trait with a genetic basis and variability in natural populations. To date, however, it remains unclear how the selective effects of OA occur within the context of complex genetic interactions underpinning larval development in many of the most vulnerable taxa. Here we evaluated phenotypic and genetic changes during larval development of Pacific oysters (<i>Crassostrea gigas</i>) reared in ambient (~ 400 µatm) and high (~ 1600 µatm) <i>p</i>CO<sub>2</sub> conditions, both in domesticated and naturalized 'wild' oysters from the Pacific Northwest, USA. Using pooled DNA samples, we determined changes in allele frequencies across larval development, from early "D-stage" larvae to metamorphosed juveniles (spat), in both groups and environments. Domesticated larvae had ~ 26% fewer loci with changing allele frequencies across developmental stages and < 50% as many loci affected by acidified culture conditions, compared to larvae from wild brood stock. Functional enrichment analyses of genetic markers with significant changes in allele frequency revealed that the structure and function of cellular membranes were disproportionately affected by high <i>p</i>CO<sub>2</sub> conditions in both groups. These results indicate the potential for a rapid adaptive response of oyster populations to OA conditions; however, underlying genetic changes associated with larval development differ between these wild and domesticated oyster stocks and influence their adaptive responses to OA conditions.</p>
Data for Apalachicola Bay oyster demographic analysis
<p>Processed data describing the number and lengths of oysters sampled from long-term fisheries independent sampling in Apalachicola Bay, Florida. Original (raw) data collected by Florida Fish and Wildlife Conservation Commission and Florida Department of Agriculture and Consumer Services.</p>
Data for: Integrated multi-trophic aquaculture with sugar kelp and oysters in a shallow coastal salt pond and open estuary site
<p>The data set includes environmental data as well as kelp and oyster data from an integrated multi-trophic aquaculture study where sugar kelp was planted on four established oyster farms in Rhode Island, USA over 2 growing seasons (Year 1 = 2017-2018; Year 2 = 2018-2019). At each site, we planted to 60 m kelp lines (denoted as Line 1 and Line 2) approximately three weeks apart to determine optimal planting time. Kelp blade length and width was recorded at periodic intervals, and tissues were collected for carbon, nitrogen, δ15N, and δ13C analyses. Oyster growth data was collected from the same sites across the same timespans. Environmental data includes data collected on monthly farm visits with a YSI Sonde, as well as dissolved nutrients in the seawater. In addition, temperatures were logged on kelp lines every 15 minutes during each growing season.</p>
Data from: Moderate recreational oyster harvest has variable impacts on biophysical properties of reefs and reef-associated fauna
<p>Data associated with the paper "Moderate recreational oyster harvest has variable impacts on biophysical properties of reefs and reef-associated fauna", published in Ecosphere, 2023.</p>
Monitoring data for oyster reefs and nearby controls, including high frequency environmental parameters, carbonate chemistry, oyster growth, and other data
<p>Data for Oyster reefs' control of carbonate chemistry - implications for oyster reef restoration in estuaries subject to coastal ocean acidification. </p>
Data from: Transcriptome and exosome proteome analyses provide insights into the mantle exosome involved in nacre color formation of pearl oyster Pinctada fucata martensii
<p>The pearl oyster <em>Pinctada fucata martensii</em> is an economically important species of marine pearl culture, and tissue of mantle plays an essential role in pearl formation. Here, the extracted exosomes from mantle of <em>P. f. martensii</em> were analyzed by quantitative protein TMT sequencing. We wanted to verify if exosomes are the important vehicle in the process of biomineralization (e.g., pearl and shell formation), especially the color formation in shellfish. Finally, we got some results which indicated the importance of exosomes in sides of proteins, and it can also contribute to other researches related to the exosomes or pearl oyster.</p>
Oyster Shell
Everyday life in Pontes, Roman Staines - an oyster shell. Visitors to Roman Britannia were not impressed by the cold wet climate and found the locals uncultured and at times somewhat hostile. What they did appreciate though were the fine, if ugly, hunting dogs and the excellent oysters. This is one of many oyster shells found amongst other Roman finds in Staines. 'Kent ware' pottery found in Staines was typically used for the transport of oysters, suggesting the Kent coast as the source for this oyster shell. Writing of the period describes a dressing of pepper, lovage, egg yolk, vinegar, fish sauce, olive oil and wine. Very tasty. Note: In the 'FeatureMatching' node of Meshroom it was critical to enable the 'Guided Matching' feature or Meshroom rejects 50% (one side) of the cameras. With this feature enabled there was 100% camera use. Meshlab was used to tidy-up any unwanted background and to decimate the structure. Source: Objaverse 1.0 / Sketchfab
Reproductive aging weakens offspring survival and constrains the telomerase response to herpesvirus in Pacific oysters
<p>These datasets and codes report the impacts of aging on oyster parents and their offspring. We compared proteomic profiles (“parent_proteomic_rawdata.tsv”) of reproductive oysters (12 males and 12 females) of three age classes (young, middle age and old) (“parent_proteomic_design.txt”). We crossbred these adult oysters as described in the paper (DOI: 10.1126/sciadv.adq2311) to examine the impacts of parental aging on their offspring phenotypes. We explored the effects of reproductive aging on offspring growth (“offspring_growth_dataset.csv”) and survival rate at larval life stage from 0 to 40 days old(“larval_survival.csv”). We also measured spat resistance to OsHV1 in laboratory (“spat_mortality_OsHV1.csv”) and in the field (“spat_mortality_OsHV1_field.csv”), and offspring survival once they attained adulthood (“adult_survival.csv”). In parallel, we assayed intra- and inter-familial telomere length dynamics (“Telomere_dataset.csv”) and telomerase (“Telomerase_dataset.csv”) as described in the manuscript.</p> <p>We also uploaded the R codes used to analyse proteomic data on parents (“ADupoue - Analyses code-Parent proteomic.R”) and the impacts of parental aging on their offspring traits (“ADupoue - Analyses code-Offspring.R”).</p> <p>Finally, we provided the output of Markov Chain Monte Carlo models used to estimate narrow sense heritability in offspring traits (“growth_larvae.rds”, “growth_spat.rds”, “survival_larvae.rds”, “survival_OsHV1_lab.rds”, “survival_adult.rds”, “Telomere_preInf.rds”, “Telomere_postInf.rds”, “Telomerase_preInf.rds”, “Telomerase_postInf.rds”). </p>
Data from: Population structure, genetic connectivity, and adaptation in the Olympia oyster (Ostrea lurida) along the west coast of North America
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Temporally-balanced selection during development of larval Pacific oysters (Crassostrea gigas) inherently preserves genetic diversity within offspring
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Simultaneous determination method of 10 organophosphate esters in oyster, an environmental indicator organism
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Monitoring data for oyster reefs and nearby controls, including high frequency environmental parameters, carbonate chemistry, oyster growth, and other data
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Fasting reduces viral susceptibility in oysters until energy depletion becomes detrimental
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Destabilizing effects on a classic tri-trophic oyster-reef cascade
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Effects of ocean acidification on the interaction between calcifying oysters (Ostrea chilensis) and bioeroding sponges (Cliona sp.)
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Data from: The dynamics of open populations: integration of top–down, bottom–up and supply‐side influences on intertidal oysters
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Data from: Oyster reefs as carbon sources and sinks
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Data from: Ocean acidification induces subtle shifts in gene expression and DNA methylation in mantle tissue of the Eastern oyster (Crassostrea virginica)
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