scholarly journals Testing the relationship between domestication and developmental instability in rainbow trout,Oncorhynchus mykiss(Teleostei, Salmonidae)

2015 ◽  
Vol 114 (3) ◽  
pp. 608-628 ◽  
Author(s):  
Domitilla Pulcini ◽  
Stefano Cataudella ◽  
Clara Boglione ◽  
Tommaso Russo ◽  
Paul A. Wheeler ◽  
...  
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Developmental Instability ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
The Relationship

Elemental signatures in otoliths of hatchery rainbow trout (Oncorhynchus mykiss): distinctiveness and utility for detecting origins and movement

2009 ◽  
Vol 66 (4) ◽  
pp. 513-524 ◽  
Author(s):  
Daniel K. Gibson-Reinemer ◽  
Brett M. Johnson ◽  
Patrick J. Martinez ◽  
Dana L. Winkelman ◽  
Alan E. Koenig ◽  
...  
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Water Chemistry ◽  
Fisheries Management ◽  
Valuable Insight ◽  
Otolith Chemistry ◽  
Considerable Potential ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
The Relationship ◽  
Ambient Levels

Otolith chemistry in freshwater has considerable potential to reveal patterns of origin and movement, which would benefit traditional fisheries management and provide a valuable tool to curb the spread of invasive and illicitly stocked species. We evaluated the relationship between otolith and water chemistry for five markers (Ba/Ca, Mn/Ca, Sr/Ca, Zn/Ca, and 87Sr/86Sr) in rainbow trout ( Oncorhynchus mykiss ) using the existing hatchery system in Colorado and Wyoming, USA, to provide controlled, seminatural conditions. Otolith Ba/Ca, Sr/Ca, and 87Sr/86Sr reflected ambient levels, whereas Mn/Ca and Zn/Ca did not. Using only the markers correlated with water chemistry, we classified fish to their hatchery of origin with up to 96% accuracy when element and isotope data were used together. Large changes in 87Sr/86Sr were evident in otolith transects, although subtler changes in Sr/Ca were also detectable. Our results suggest the relatively few otolith markers that reflect ambient chemistry can discriminate among locations and track movements well enough to provide valuable insight in a variety of applied contexts.

Inter-tissue differences in mitochondrial enzyme activity, RNA and DNA in rainbow trout (Oncorhynchus mykiss)

1998 ◽  
Vol 201 (24) ◽  
pp. 3377-3384 ◽  
Author(s):  
S. C. Leary ◽  
B. J. Battersby ◽  
C. D. Moyes
Keyword(s):  
Enzyme Activity ◽  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Citrate Synthase ◽  
Mitochondrial Protein ◽  
Molecular Organization ◽  
Mitochondrial Rna ◽  
Mitochondrial Enzyme ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
The Relationship

We examined whether the relationships between mitochondrial enzyme activity, mitochondrial DNA (mtDNA) and mitochondrial RNA (mtRNA) were conserved in rainbow trout (Oncorhynchus mykiss) tissues that differ widely in their metabolic and molecular organization. The activity of citrate synthase (CS), expressed either per gram of tissue or per milligram of total DNA, indicated that these tissues (blood, brain, kidney, liver,cardiac, red and white muscles) varied more than 100-fold in mitochondrial content. Several-fold differences in the levels of CS mRNA per milligram of DNA and CS activity per CS mRNA were also observed, suggesting that fundamental differences exist in the regulation of CS levels across tissues. Although tissues varied 14-fold in RNA g-1, poly(A+) RNA (mRNA)was approximately 2 % of total RNA in all tissues. DNA g-1 also varied 14-fold across tissues, but RNA:DNA ratios varied only 2.5-fold. The relationship between two mitochondrial mRNA species (COX I, ATPase VI) and one mitochondrial rRNA (16S) species was constant across tissues. The ratio of mtRNA to mtDNA was also preserved across most tissues; red and white muscle had 10- to 20-fold lower levels of mtDNA g-1 but 7- to 10-fold higher mtRNA:mtDNA ratios, respectively. Collectively, these data suggest that the relationship between mitochondrial parameters is highly conserved across most tissues, but that skeletal muscles differ in a number of important aspects of respiratory gene expression ('respiratory genes'include genes located on mtDNA and genes located in the nucleus that encode mitochondrial protein) and mtDNA transcriptional regulation.

The relationship between emergence from spawning gravel and growth in farmed rainbow trout Oncorhynchus mykiss

2013 ◽  
Vol 83 (1) ◽  
pp. 214-219 ◽  
Author(s):  
M. Å. Andersson ◽  
D. C. Laursen ◽  
P. I. M. Silva ◽  
E. Höglund
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
The Relationship

The relationship between responsiveness and elusiveness of heat-shocked goldfish (Carassius auratus) to attacks by rainbow trout (Oncorhynchus mykiss)

1994 ◽  
Vol 72 (3) ◽  
pp. 423-426 ◽  
Author(s):  
Paul W. Webb ◽  
Hongbao Zhang
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Carassius Auratus ◽  
Prey Capture ◽  
Acclimation Temperature ◽  
Escape Velocity ◽  
Reaction Distance ◽  
Goldfish Carassius Auratus ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
The Relationship

We measured reaction distance, escape velocity, and the apparent looming threshold (ALT) of heat-shocked goldfish (Carassius auratus) attacked by trout (Oncorhynchus mykiss). We tested fish at the acclimation temperature of 15 °C after heat-shocking prey for 2 min at temperatures ranging from 34 to 39 °C. Escape speeds were unaffected by heat shock. Reaction distance decreased from about 21 cm for fish shocked at 35 °C to about 6 cm for those shocked at 39 °C. ALT increased from 0.2 rad∙s−1 for controls to 0.4 rad∙s−1 for goldfish heat-shocked at 39 °C. The elusiveness of prey, E, was measured as the number of attacks required per prey capture. E was related to ALT as: E = 1.29 (±0.47)∙ALT−0.82(±0.25) (mean (±2 SE)). Factors that decrease responsiveness of prey have large effects on the ability of prey to avoid predators.

scholarly journals Relationships among growth and different NOR phenotypes in a specific stock of rainbow trout (Oncorhynchus mykiss)

2007 ◽  
Vol 67 (2) ◽  
pp. 355-361 ◽  
Author(s):  
F. Porto-Foresti ◽  
C. Oliveira ◽  
YA. Tabata ◽  
MG. Rigolino ◽  
F. Foresti
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Genetic Parameters ◽  
Genetic Variance ◽  
Additive Genetic Variance ◽  
Statistical Test ◽  
Allometric Growth ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Cultured Fish ◽  
The Relationship

Growth is one of the most important aspects in the genetic improvement of cultured fish species. Consequently, genetic parameters related to this feature and their response to selection have been the focus of most research in this area. Such research indicates that, in general, there is enough additive genetic variance related to growth, justifying the use of selection. Based on the usefulness of cytogenetic and molecular markers in the fish culture, the aim of the present work was to analyze the possible relationships among cytogenetic characteristics, specifically the NOR phenotypes, and the increase in length and weight in specimens of the rainbow trout (Oncorhynchus mykiss), resultant from directed mating between homozygous females and heterozygous males according to their NOR phenotypic patterns. The equations of the relationship between length and weight of the analyzed specimens followed the model Wt = a Lt b, showing b values higher than 3, determinant of a positive allometric growth. The results showed that the different NOR phenotypes were not related with the growth values for length and weight in any statistical test.

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