GEO DataSets

(Submitter supplied) Plastics are persistent synthetic polymers that accumulate in the marine environment as waste. Microplastic (MP) particles are derived from the breakdown of larger debris or can enter the environment as microscopic fragments. Filter-feeder organisms ingest MP while feeding and are likely to be impacted by MP pollution. To assess the impact of polystyrene microspheres (PS) on the physiology of the Pacific oyster, adult oysters were experimentally exposed to virgin micro-PS (2 and 6 µm in diameter; 32 µg L-1) for two months during a reproductive cycle. more...

Organism:

Magallana gigas

Type:

Expression profiling by array

Platform:

GPL11353

59 Samples

Download data: TXT

(Submitter supplied) Background Triploidy can occur in all species but is often lethal in birds and mammals. In amphibian, invertebrates and numerous species of fishes, triploid animals are viable and undistinguishable from diploid individuals. Gametogenesis is often affected and most animals are sterile for at least one sex, and gametes for the other sex are often unfertile. Although the majority of triploid oysters are sterile (beta individuals, 3nb), a low but persistent proportion of male and female animals produce gametes (alpha individuals, 3na). more...

Organism:

Magallana gigas

Type:

Expression profiling by array

Platform:

GPL11353

35 Samples

Download data: TXT

(Submitter supplied) Originating from Northeast Asia, the Pacific oyster Crassostrea gigas has been introduced into a large number of countries for aquaculture purpose. Following introduction, the Pacific oyster has turned into an invasive species in an increasing number of coastal areas, notably in Northern Europe. To explore adaptation on reproductive traits of population considered as invasive, we set up a common garden experiment based on the comparison of progenies from two populations of Pacific oyster sampled in France and Denmark. more...

Organism:

Magallana gigas

Type:

Expression profiling by array

Platform:

GPL11353

177 Samples

Download data: TXT

(Submitter supplied) Massive mortalities have been observed in France since 2008 on spat and juvenile Pacific oysters, Crassostrea gigas. A herpes virus called OsHV-1, easily detectable by PCR, has been implicated in the mortalities as demonstrated by the results of numerous field studies linking mortality with OsHV-1 prevalence. Moreover, experimental infections using viral particles have documented the pathogenicity of OsHV-1. more...

Organism:

Magallana gigas

Type:

Expression profiling by array

Platform:

GPL11353

16 Samples

Download data: TXT

(Submitter supplied) Background The Pacific oyster Crassostrea gigas (Mollusca, Lophotrochozoa) is an alternative and irregular protandrous hermaphrodite. Little is known about the genetic and phenotypic bases of sex determinism in oysters, and little more about the molecular pathways regulating reproduction. We have recently developed and validated a microarray containing 31,918 oligomers (Dheilly et al., 2011) representing the oyster transcriptome. more...

Organism:

Magallana gigas

Type:

Expression profiling by array

Platform:

GPL11353

45 Samples

Download data: TXT

(Submitter supplied) Research using the oyster Crassostrea gigas as a model has experienced a rapid growth in recent years thanks to the development of high throughput molecular technologies. As many as 56,268 EST sequences have so far been sequenced, representing a genome-wide resource that can be used for microarray investigations. We have developed an oyster microarray containing cDNAs representing 31,918 unique transcribed sequences. more...

Organism:

Magallana gigas

Type:

Expression profiling by array

Platform:

GPL11353

33 Samples

Download data: TXT