Journal ArticleDOI
Fluorescent banding patterns of the chromosomes of the genus Salmo
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TLDR
The fluorescent banding patterns of the chromosomes of Salmo gairdneri (rainbow trout), Salmo trutta (brown trout), and Salmo salar from North America and Great Britain are described.Abstract:
The fluorescent banding patterns of the chromosomes of Salmo gairdneri (rainbow trout), Salmo trutta (brown trout), and Salmo salar (Atlantic salmon) from North America and Great Britain are described. Quinacrine stained a subset of C bands in S. gairdneri and S. salar from North America. No bright quinacrine (Q) bands were found on the chromosomes of S. salar from Great Britain or the chromosomes from any of the three stocks of S. trutta that were examined. Q bands were found at the centromeres of three to seven different chromosome pairs in S. gairdneri, including the pair that has been identified as the sex chromosome pair in some populations. In S. salar from North America the Q bands were found at the teleomeres of three to four chromosome pairs and at interstitial locations in the 10–13 large acrocentric chromosome pairs. Chromomycin A3 stained either the nucleolar organizer region or the adjacent heterochromatin or both in all three species. In S. trutta the entire short arm of the acrocentric chro...read more
Citations
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Journal ArticleDOI
Improved methods for working with fish chromosomes with a review of metaphase chromosome banding
TL;DR: Improved methods for obtaining, preparing, and staining fish chromosomes are described and procedures for resolving serial or G-type bands are presented.
Journal ArticleDOI
Chromosome evolution in the Salmonidae (Pisces): an update.
Ruth B. Phillips,Petr Ráb +1 more
TL;DR: Two modes of chromosome evolution are found in the salmonids: in the Coregoninae and the Salmoninae the chromosomes have evolved by centric fusions of the Robertsonian type decreasing chromosome numbers (2n) while retaining chromosome arm numbers (NF) close to that finding in the hypothetical tetraploid ancestor so that most extant taxa have either type A or type B karyotypes.
Journal ArticleDOI
Rapid parallel evolutionary changes of gene transcription profiles in farmed Atlantic salmon
TL;DR: Comparing the transcription profiles of 3557 genes in the progeny of farmed and wild Atlantic salmon from Norway and Canada grown in controlled conditions shows that five to seven generations of artificial selection led to heritable changes in gene transcription profiles, and suggests how gene flow from farmed escapees may affect the genetic integrity of wild populations.
Journal ArticleDOI
Multi-chromosomal location of ribosomal RNA genes and heterochromatin association in brown trout
TL;DR: The ribosomal rRNA genes have been mapped by fluorescentin situ hybridization (FISH) to brown trout chromosomes and both major and minor NORs were closely related to polymorphic heterochromatin, as revealed by FISH and C-banding.
Journal ArticleDOI
Assignment of Rainbow Trout Linkage Groups to Specific Chromosomes
Ruth B. Phillips,Ruth B. Phillips,Krista M. Nichols,Jenefer DeKoning,Matthew R. Morasch,Kimberly A. Keatley,Caird E. Rexroad,Scott A. Gahr,Roy G. Danzmann,Robert E. Drew,Gary H. Thorgaard +10 more
TL;DR: The rainbow trout genetic linkage groups have been assigned to specific chromosomes in the OSU strain using fluorescence in situ hybridization (FISH) with BAC probes containing genes mapped to each linkage group, suggesting that diploidization resulted in substantial divergence of intergenic regions.
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