Influence of temporal variations in water chemistry on the Pb isotopic composition of rainbow trout (Oncorhynchus mykiss)

2005 ◽  
Vol 350 (1-3) ◽  
pp. 204-224 ◽  
Author(s):  
Jerry R. Miller ◽  
Jamie B. Anderson ◽  
Paul J. Lechler ◽  
Shannon L. Kondrad ◽  
Peter F. Galbreath ◽  
...  
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Isotopic Composition ◽  
Water Chemistry ◽  
Temporal Variations ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Pb Isotopic Composition

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.

Influence of water chemistry and migratory distance on ability to distinguish progeny of sympatric resident and anadromous rainbow trout (Oncorhynchus mykiss)

2008 ◽  
Vol 65 (6) ◽  
pp. 1060-1075 ◽  
Author(s):  
Christopher J. Donohoe ◽  
Peter B. Adams ◽  
Chantell F. Royer
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Water Chemistry ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Otolith Sr:Ca Ratios ◽  
Alternative Method ◽  
Confounding Variables ◽  
Influence Of Water ◽  
Sr:Ca Ratios ◽  
Progeny Analysis

Otolith Sr:Ca ratios near primordia (Sr:CaCore) have been used to distinguish progeny of resident and anadromous Oncorhynchus mykiss and to estimate rates of exchange between the two forms; however, the influences of confounding variables on Sr:CaCore have not been quantified. We analyzed Sr:CaCore in juvenile O. mykiss produced at 13 California hatcheries that spawn primarily resident or anadromous broodstock. Mean Sr:CaCore of progeny of resident females increased with increasing Sr:Ca ratio of the stream (Sr:CaWater) in which the mother spawned (r2 = 0.71). Mean Sr:CaCore of progeny of anadromous females averaged 1.0 × 10–3 higher, also increased with Sr:CaWater, and decreased with increasing migratory difficulty (distance × elevation) of the mother (r2 = 0.96). Model results predict that discrimination of sympatric progeny is equally good among streams where Sr:CaWater is less than 5 mmol·mol–1, but limited at higher Sr:CaWater or when anadromous females return to freshwater 6 months or more before spawning (e.g., summer steelhead). The models also provide an alternative method of interpreting Sr:CaCore data that can improve discrimination between sympatric progeny. Analysis of adults from one stream and eight hatchery sites suggested that resident females made little or no contribution to populations of anadromous adults, but anadromous females contributed to populations of resident adults.

Effects of water chemistry and temperature on radiocesium dynamics in rainbow trout, Oncorhynchus mykiss

1995 ◽  
Vol 52 (3) ◽  
pp. 607-613 ◽  
Author(s):  
L. A. Cocchio ◽  
F. W. H. Beamish ◽  
D. W. Rodgers
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Water Chemistry ◽  
Rate Constant ◽  
Elimination Rate ◽  
Whole Body ◽  
Average Value ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Gamma Counting ◽  
Effects Of Temperature

We determined the effects of temperature (8 and 16 °C) and water concentrations of potassium (0.01–3.4 mmol/L), sodium (0.4–3.0 mmol/L), and calcium (0.3–2.9 mmol/L) on the dynamics of 137Cs in rainbow trout (Oncorhynchus mykiss). Trout were fed food labelled with 137Cs, and 137Cs retention was monitored by whole body gamma counting (70 d). Assimilation of 137Cs did not vary significantly over the range of concentrations of K+, Na+, and Ca2+ employed, with an average value of 65 ± 3% (mean ± SE). The elimination of 137Cs was significantly affected by K+, with the elimination rate constant of trout held at the highest K+ concentration (0.021 ± 0.001 d−1 at K+ of 3.4 mmol/L) roughly double that observed in trout at lower K+ (0.011 ± 0.001 d−1 at K+ ≤ 0.3 mmol/L). Elimination of 137Cs was also significantly affected by temperature, with the increase in elimination rate over the range of 8 and 16 °C corresponding to a Q10 of ≈1.7. Although the effect of K+ on accumulation of 137Cs in trout was statistically significant, this effect, by itself, can explain only a small fraction of the broad range of 137Cs concentration ratios reported for wild fish.

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
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