Matriarchal population structure of introduced rainbow trout (Oncorhynchus mykiss) in the Lake Ontario watershed

1996 ◽  
Vol 53 (9) ◽  
pp. 2100-2114 ◽  
Author(s):  
L A Dueck ◽  
R G Danzmann
Keyword(s):  
Population Structure ◽  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Lake Ontario ◽  
Rainbow Trout Oncorhynchus Mykiss

Population structure of sympatric anadromous and nonanadromous Oncorhynchus mykiss: evidence from spawning surveys and otolith microchemistry

2000 ◽  
Vol 57 (10) ◽  
pp. 2152-2162 ◽  
Author(s):  
Christian E Zimmerman ◽  
Gordon H Reeves
Keyword(s):  
Population Structure ◽  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Electron Microprobe ◽  
Otolith Microchemistry ◽  
Maternal Origin ◽  
Isolated Populations ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Deschutes River ◽  
Spawning Sites

Reproductive isolation between steelhead and resident rainbow trout (Oncorhynchus mykiss) was examined in the Deschutes River, Oregon, through surveys of spawning timing and location. Otolith microchemistry was used to determine the occurrence of steelhead and resident rainbow trout progeny in the adult populations of steelhead and resident rainbow trout in the Deschutes River and in the Babine River, British Columbia. In the 3 years studied, steelhead spawning occurred from mid March through May and resident rainbow trout spawning occurred from mid March through August. The timing of 50% spawning was 9-10 weeks earlier for steelhead than for resident rainbow trout. Spawning sites selected by steelhead were in deeper water and had larger substrate than those selected by resident rainbow trout. Maternal origin was identified by comparing Sr/Ca ratios in the primordia and freshwater growth regions of the otolith with a wavelength-dispersive electron microprobe. In the Deschutes River, only steelhead of steelhead maternal origin and resident rainbow trout of resident rainbow trout origin were observed. In the Babine River, steelhead of resident rainbow trout origin and resident rainbow trout of steelhead maternal origin were also observed. Based on these findings, we suggest that steelhead and resident rainbow trout in the Deschutes River may constitute reproductively isolated populations.

Differentiation of rainbow trout (Oncorhynchus mykiss) populations in Lake Ontario and the evaluation of the stepwise mutation and infinite allele mutation models using microsatellite variability

1997 ◽  
Vol 54 (6) ◽  
pp. 1391-1399 ◽  
Author(s):  
Michael O'Connell ◽  
Roy G Danzmann ◽  
Jean-Marie Cornuet ◽  
Jonathan M Wright ◽  
Moira M Ferguson
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Microsatellite Loci ◽  
Genomic Library ◽  
Lake Ontario ◽  
Effective Population ◽  
Infinite Allele Model ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Stepwise Mutation ◽  
Dna Primers

Microsatellites, comprising (GT)\dn6 n tandemly repeated arrays, were isolated from a size-selected genomic library of rainbow trout (Oncorhynchus mykiss) DNA. Primers were designed for five microsatellite loci, four of which were variable. Primers for two of these loci were used in conjunction with primers for three microsatellite loci from a related species, Salmo salar, to investigate patterns of differentiation in freshwater migratory populations of rainbow trout in Lake Ontario. The five loci used revealed high levels of polymorphism with heterozygosity estimates ranging from 0.740 to 0.956. Significant differences in allele frequencies among populations were observed for all loci. Heterozygosity and allele number values, at each locus for each population, were used to test two alternative mutation models, the infinite allele model (IAM) and the stepwise mutation model (SMM). The predictions of the IAM proved to be more accurate for the majority of the data and this model was used to calculate estimates of effective population size.

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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