Project description:Characterizing a common cellular stress response (CSR) to high water temperature across species and populations is necessary for identifying the capacity of Pacific salmon (Oncorhynchus spp.) to persist in current and future climate warming scenarios, especially for populations at the southern periphery of their species' distributions. In this study, populations of wild adult pink (O. gorbuscha) and sockeye (O. nerka) salmon from the Fraser River, British Columbia, Canada, were experimentally treated to an ecologically relevant 'cool' or 'warm' water temperature to uncover common transcriptomic responses to elevated water temperature.
Project description:Characterizing a common cellular stress response (CSR) to high water temperature across species and populations is necessary for identifying the capacity of Pacific salmon (Oncorhynchus spp.) to persist in current and future climate warming scenarios, especially for populations at the southern periphery of their species' distributions. In this study, populations of wild adult pink (O. gorbuscha) and sockeye (O. nerka) salmon from the Fraser River, British Columbia, Canada, were experimentally treated to an ecologically relevant 'cool' or 'warm' water temperature to uncover common transcriptomic responses to elevated water temperature.
Project description:Characterizing a common cellular stress response (CSR) to high water temperature across species and populations is necessary for identifying the capacity of Pacific salmon (Oncorhynchus spp.) to persist in current and future climate warming scenarios, especially for populations at the southern periphery of their species' distributions. In this study, populations of wild adult pink (O. gorbuscha) and sockeye (O. nerka) salmon from the Fraser River, British Columbia, Canada, were experimentally treated to an ecologically relevant 'cool' or 'warm' water temperature to uncover common transcriptomic responses to elevated water temperature.
2013-11-01 | GSE42555 | GEO
Project description:Endangered wild salmon infected by newly discovered viruses
Project description:We collected sockeye salmon from the Fraser River, British Columbia, and held them at ecologically relevant temperatures (14C and 19C) determine the effect of elevated water temperature on cellular processes in non-lethally sampled gill tissue and blood plasma over a period of seven days that represents a significant portion of their upstream migration. Time-matched fish that died prematurely over the course of the holding study were also sampled for gill tissue and the transcriptomic responses in moribund fish were compared with surviving fish. This is the first study to experimentally examine transcriptomic responses to high water temperature and premature mortality in wild-caught Pacific salmon and the results will help in understanding some of the cellular mechanisms involved in large-scale migration mortality in Pacific salmon during warm water periods and for predicting or understanding causes of mortality in naturally senescing adult Pacific salmon.
Project description:In this study we used metaproteomics to discern the metabolism and physiology of the microorganisms occurring in the phototrophic mats of four soda lakes in the interior of British Columbia, Canada. Binned and assembled metagenomes were used as the database for protein identification.
Project description:Characterizing a common cellular stress response (CSR) to high water temperature across species and populations is necessary for identifying the capacity of Pacific salmon (Oncorhynchus spp.) to persist in current and future climate warming scenarios, especially for populations at the southern periphery of their species' distributions. In this study, populations of wild adult pink (O. gorbuscha) and sockeye (O. nerka) salmon from the Fraser River, British Columbia, Canada, were experimentally treated to an ecologically relevant 'cool' or 'warm' water temperature to uncover common transcriptomic responses to elevated water temperature. Ninety-eight samples from three separate temperature exposure studies were analyzed on ninety-eight microarrays, using a common reference design, with multiple biological replicates for each temperature condition for each year of the experiment.
Project description:Characterizing a common cellular stress response (CSR) to high water temperature across species and populations is necessary for identifying the capacity of Pacific salmon (Oncorhynchus spp.) to persist in current and future climate warming scenarios, especially for populations at the southern periphery of their species' distributions. In this study, populations of wild adult pink (O. gorbuscha) and sockeye (O. nerka) salmon from the Fraser River, British Columbia, Canada, were experimentally treated to an ecologically relevant 'cool' or 'warm' water temperature to uncover common transcriptomic responses to elevated water temperature. Ninety-eight samples from three separate temperature exposure studies were analyzed on ninety-eight microarrays, using a common reference design, with multiple biological replicates for each temperature condition for each year of the experiment.
Project description:IPNV is a viral pathogen causing losses in commercial aquaculture of Atlantic salmon. This study was performed to examine transcriptomic responses to IPNV and to compare them with changes caused with other viruses.
Project description:Emerging viruses are usually endemic to tropical and sub-tropical regions of the world, but increased global travelling, climate changes and changes in lifestyle are believed to contribute to the spread of these viruses into new regions. For many of them, the disease symptoms are similar to each other, as well as to other more common diseases, making them difficult to diagnose. A rapid identification will help to decide about specific treatment and appropriate case management. Real-time PCR is commonly used for specific virus detection in clinical samples. A diagnostic microarray containing probes for all human viruses, could replace hundreds of specific PCR-reactions and identify all viruses by one assay and thereby remove the need for a clear clinical hypothesis. We show that the Microbial Detection Array successfully identifies emerging viruses present in both non-clinical and clinical samples. Fifteen clinical samples and 27 non-clinical samples (cell culture supernantants or purified viral DNA or RNA) were analyzed for presence of emerging viruses using the MDA microarray.