Dataset Information

Spatail gradient approach application in assessing changes in the rainbow darter (Etheostome caeruleum) liver transcriptome in the Grand River, Ontario

ABSTRACT: In this study, adult male rainbow darter (Etheostoma caeruleum) were collected from nine sites located at different distances from two wastewater treatment plants (WWTPs) in the Grand River, Ontario, Canada. The goal of this project was to see if the liver transcriptome of fish residing downstream of the two WWTPs differs from the non-exposed fish. Further, this research was also addressing the affects of differnent reference site selection on gene expression patterns, and their subsequent interpretation.The RNA from male rainbow darter was exctracted from liver tissue and used for further gene expression analysis.

ORGANISM(S): Etheostoma caeruleum

PROVIDER: GSE95082 | GEO | 2017/02/21

SECONDARY ACCESSION(S): PRJNA376010

REPOSITORIES: GEO

ACCESS DATA

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

Project description:Marker-assisted selective breeding of fish with higher levels of resistance towards specific pathogens has shown successful, but. However, the impact of host genotype on multiple pathogen infections are is still poorly investigated. This study examined the resistance in rainbow trout (Oncorhynchus mykis) towards infection with the eye fluke Diplostomum pseudospathaceum. We used genetically selected rainbow trout, carrying SNPs associated with resistance towards the parasitic ciliate Ichthyophthirius multifiliis, and exposed the fish to eye fluke cercariae. We showed that fish partly resistant to I. multifiliis were more susceptible to eye fluke invasion. Expression The expression of immune relevant genes (encoding innate and adaptive factors) was also affected as these genotypes responded less strongly to a secondary fluke infection. The complexity of genome architecture in disease resistance towards multiple pathogens is discussed. A total of 200 rainbow trout (body weight 14.3-17.7 g, body length 10.2-11.5 cm) were used for the study. Two groups of rainbow trout with high (QTL fish) and low (non-QTL fish) frequency of SNPs associated with I. multifiliis resistance, were hatched from eyed eggs at the disease free recirculated Bornholm Salmon Hatchery, Nexø, Denmark and subsequently reared to the fingerling stage. For this purpose, the first group (QTL-fish) was produced by using sperm from three male genotyped parents carrying SNPs AX-89947214 (Omy17) and AX-89960822 (Omy16), and the other group (non-QTL fish) was produced by using sperm from three other male parents negative for these SNPs. In both cases, sperm was used to fertilize a common pool of eggs stripped from a total of 30 outbred females. Processes of hatching and subsequent rearing of fry to the fingerling stage did not differ between groups of QTL fish and non-QTL fish. From each group (QTL and non-QTL fish) we randomly gathered 100 rainbow trout and transported them (3 h duration) from the hatchery to the infection facility at the University of Copenhagen. Fish were then accommodated and acclimatized 14 d in identical aerated glass tanks with internal biofilters (25 fish per 60 L water, total tank volume 80 L), which were placed in a temperature temperature-controlled room (water temperature constant at 12°C, pH 7.6). We used 30% water change per day to maintain ammonia levels below 0.25. Fish were fed by pelleted feed (1% of fish biomass per day). All fish were genotyped with respect to the two relevant QTLs, one on chomosome 16 and one on chromosome 17. Fish being double heterozugous were excluded from qPCR analysis.

Dataset Information

Spatail gradient approach application in assessing changes in the rainbow darter (Etheostome caeruleum) liver transcriptome in the Grand River, Ontario

Dataset's files

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets