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Morphologically differentiated sex chromosomes are found in only few salmonid species. Some populations of rainbow trout, Oncorhynchus mykiss, exhibit chromosomal polymorphism related to sex. We found sex-related chromosomal polymorphism in fish from the synthetic Rutki strain, Poland, in approximately 85% (n=22) of examined males (XY-like) whereas the remaining males (n=4) possessed chromosomes similar...
Epistasis among quantitative trait loci (QTL) for survival (upper thermal tolerance, UTT) and morphological (fork length, FL and condition factor, K) traits was detected in purestrain and interstrain rainbow trout (Oncorhynchus mykiss) families. One sex-linked (OmyFGT19TUF) and three autosomal (Omy325UoG, Ssa14DU and Ssa20.19NUIG; linkage groups B, D and S, respectively) microsatellite loci linked...
With the aim of characterizing the sex chromosomes of rainbow trout (Oncorhynchus mykiss) and to identify the sex chromosomes of coho salmon (O. kisutch), we used molecular markers OmyP9, 5S rDNA, and a growth hormone gene fragment (GH2), as FISH probes. Metaphase chromosomes were obtained from lymphocyte cultures from farm specimens of rainbow trout and coho salmon. Rainbow trout sex marker OmyP9...
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