Sex chromosome linkage of 5S rDNA in rainbow trout (Oncorhynchus mykiss)

1996 ◽  
Vol 75 (2-3) ◽  
pp. 145-150 ◽  
Author(s):  
P. Moran ◽  
J.L. Martinez ◽  
E. Garcia-Vazquezm ◽  
A.M. Pendas
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Sex Chromosome ◽  
5S Rdna ◽  
Rainbow Trout Oncorhynchus Mykiss

Karyotype variation in the albino rainbow trout (Oncorhynchus mykiss (Walbaum))

Genome ◽  
2009 ◽  
Vol 52 (4) ◽  
pp. 347-352 ◽  
Author(s):  
K. Ocalewicz ◽  
S. Dobosz
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
X Chromosome ◽  
5S Rdna ◽  
Mitotic Chromosomes ◽  
Dapi Staining ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Rdna Sequences ◽  
Cytogenetic Location

A Robertsonian polymorphism resulting in diploid chromosome number ranging from 59 to 61 and constant chromosome arm number (fundamental number = 104) was observed in the albino rainbow trout ( Oncorhynchus mykiss (Walbaum)) from the yellow color strain. In one individual, 90 mitotic chromosomes and 156 chromosome arms were counted, indicating the fish as a triploid. Morphology of the chromosomes, DAPI staining, and the cytogenetic location of 5S rDNA sequences showed sex-related chromosomal heteromorphism in the specimens. Additionally, length polymorphism of the X chromosome was detected in the studied individuals and two morphs of the X chromosome were described, XL and XS, according to the size of its short arm (p). The XS was observed in the female as well as male albino rainbow trout; however, among females, no XSXS genotype was found. After primed in situ labeling with 5S rDNA primers, the p-arms of both types of the X chromosome showed similar hybridization signals. On the other hand, fluorescence in situ hybridization with telomeric PNA (peptide nucleic acid) probe exhibited weak hybridization spots on the p-arm of the XS chromosome compared with the distinct hybridization spots observed on the XL p-arm. This could reflect a different telomere length on the p-arm of the XS and XL chromosomes. Partial translocation and deletion of the X chromosome p-arm are considered to be responsible for the p-arm length difference between the two morphological variants of X chromosome.

The essential oils of some medicinal plants on the immune system of rainbow trout (Oncorhynchus mykiss)

Planta Medica ◽  
2012 ◽  
Vol 78 (11) ◽  
Author(s):  
A Ghasemi Pirbalouti ◽  
E Pirali ◽  
G Pishkar ◽  
S Mohammadali Jalali ◽  
M Reyesi ◽  
...  
Keyword(s):  
Immune System ◽  
Rainbow Trout ◽  
Medicinal Plants ◽  
Oncorhynchus Mykiss ◽  
Essential Oils ◽  
Rainbow Trout Oncorhynchus Mykiss

Nuclear distribution of genotoxic damage in rainbow trout (Oncorhynchus mykiss) sperm after cryopreservation

2014 ◽  
Author(s):  
Silvia Gonzalez-Rojo ◽  
Cristina Fernandez-Diez ◽  
Marta Lombo ◽  
Vanesa Robles Rodriguez ◽  
Herraez Maria Paz
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Genotoxic Damage ◽  
Nuclear Distribution ◽  
Rainbow Trout Oncorhynchus Mykiss
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