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Genetic sex marker in roach

ABSTRACT: Identification of a genetic sex marker in the roach (Rutilus rutilus) using RAD sequencing.

PROVIDER: PRJEB26657 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	ERR2571260.fastq.gz	Fastqsanger.gz
	ERR2571260_1.fastq.gz	Fastqsanger.gz
	ERR2571260_2.fastq.gz	Fastqsanger.gz
	ERR2571261.fastq.gz	Fastqsanger.gz
	ERR2571261_1.fastq.gz	Fastqsanger.gz

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Project description:Hybrid generations usually face either a heterosis advantage or a breakdown that can be expressed by the level of parasite infection in hybrid hosts. Hybrids are less infected by parasites than parental species (especially F1 generations) or more infected than parental species (especially post-F1 generations). We performed the experiment with blood-feeding gill parasite Paradiplozoon homoion (Monogenea) infecting leuciscid species, Abramis brama and Rutilus rutilus, their F1 generation, and two backcross generations. Backcross generations tended to be more parasitized than parental lines and the F1 generation. The number of differentially expressed genes (DEGs) was lower in F1 hybrids and higher in backcross hybrids when compared to each of the parental lines. The main groups of DEGs were shared among lines, however, Abramis brama and Rutilus rutilus differed in some of the top gene ontology (GO) terms. DEG analyses revealed the role of heme binding and erythrocyte differentiation after infection by blood-feeding P. homoion. Two backcross generations shared some of the top GO terms representing mostly downregulated genes associated with P. homoion infection. KEGG analysis revealed the importance of disease-associated pathways. The majority of them were shared by two backcross generations. Our study revealed the most pronounced DEGs associated with monogenean infection in backcross hybrids, potentially explained by hybrid breakdown. The gene expression of F1 hybrids was little affected by P. homoion, suggesting the hybrid advantage.

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