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Thermal tolerance and metabolic physiology among redband trout populations in south‐eastern Oregon
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| Zeitschriftentitel: | Journal of Fish Biology |
|---|---|
| Personen und Körperschaften: | , , , , , |
| In: | Journal of Fish Biology, 64, 2004, 2, S. 310-335 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
Wiley
|
| Schlagwörter: |
| author_facet |
Rodnick, K. J. Gamperl, A. K. Lizars, K. R. Bennett, M. T. Rausch, R. N. Keeley, E. R. Rodnick, K. J. Gamperl, A. K. Lizars, K. R. Bennett, M. T. Rausch, R. N. Keeley, E. R. |
|---|---|
| author |
Rodnick, K. J. Gamperl, A. K. Lizars, K. R. Bennett, M. T. Rausch, R. N. Keeley, E. R. |
| spellingShingle |
Rodnick, K. J. Gamperl, A. K. Lizars, K. R. Bennett, M. T. Rausch, R. N. Keeley, E. R. Journal of Fish Biology Thermal tolerance and metabolic physiology among redband trout populations in south‐eastern Oregon Aquatic Science Ecology, Evolution, Behavior and Systematics |
| author_sort |
rodnick, k. j. |
| spelling |
Rodnick, K. J. Gamperl, A. K. Lizars, K. R. Bennett, M. T. Rausch, R. N. Keeley, E. R. 0022-1112 1095-8649 Wiley Aquatic Science Ecology, Evolution, Behavior and Systematics http://dx.doi.org/10.1111/j.0022-1112.2004.00292.x <jats:p>Streamside measurements of critical thermal maxima (<jats:italic>T</jats:italic><jats:sub>crit</jats:sub>), swimming performance (<jats:italic>U</jats:italic><jats:sub>crit</jats:sub>), and routine (<jats:italic>R</jats:italic><jats:sub>r</jats:sub>) and maximum (<jats:italic>R</jats:italic><jats:sub>max</jats:sub>) metabolic rates were performed on three populations of genetically distinct redband trout <jats:italic>Oncorhynchus mykiss</jats:italic> in the high‐desert region of south‐eastern Oregon. The <jats:italic>T</jats:italic><jats:sub>crit</jats:sub> values (29·4 ± 0·1° C) for small (40–140 g) redband trout from the three streams, and large (400–1400 g) redband trout at Bridge Creek were not different, and were comparable to published values for other salmonids. At high water temperatures (24–28° C), large fish incurred higher metabolic costs and were more thermally sensitive than small fish. <jats:italic>U</jats:italic><jats:sub>crit</jats:sub>(3·6 ± 0·1 <jats:italic>L</jats:italic><jats:sub>F</jats:sub> s<jats:sup>−1</jats:sup>), <jats:italic>R</jats:italic><jats:sub><jats:italic>r</jats:italic></jats:sub>(200 ± 13 mg O<jats:sub>2</jats:sub> kg<jats:sup>−0·830</jats:sup> h<jats:sup>−1</jats:sup>) and metabolic power (533 ± 22 mg O<jats:sub>2</jats:sub> kg<jats:sup>−0·882</jats:sup> h<jats:sup>−1</jats:sup>) were not significantly different between populations of small redband trout at 24° C. <jats:italic>R</jats:italic><jats:sub>max</jats:sub> and metabolic power, however, were higher than previous measurements for rainbow trout at these temperatures. Fish from Bridge Creek had a 30% lower minimum total cost of transport (<jats:italic>C</jats:italic><jats:sub>min</jats:sub>), exhibited a lower refusal rate, and had smaller hearts than fish at 12‐mile or Rock Creeks. In contrast, no differences in <jats:italic>U</jats:italic><jats:sub>crit</jats:sub> or metabolism were observed between the two size classes of redband trout, although <jats:italic>C</jats:italic><jats:sub>min</jats:sub> was significantly lower for large fish at all swimming speeds. Biochemical analyses revealed that fish from 12‐mile Creek, which had the highest refusal rate (36%), were moderately hyperkalemic and had substantially lower circulating levels of free fatty acids, triglycerides and albumin. Aerobic and anaerobic enzyme activities in axial white muscle, however, were not different between populations, and morphological features were similar. Results of this study: 1) suggest that the physiological mechanisms that determine <jats:italic>T</jats:italic><jats:sub>crit</jats:sub> in salmonids are highly conserved; 2) show that adult (large) redband trout are more susceptible to the negative affects of elevated temperatures than small redband trout; 3) demonstrate that swimming efficiency can vary considerably between redband trout populations; 4) suggest that metabolic energy stores correlate positively with swimming behaviour of redband trout at high water temperatures; 5) question the use of <jats:italic>T</jats:italic><jats:sub>crit</jats:sub> for assessing physiological function and defining thermal habitat requirements of stream‐dwelling salmonids like the redband trout.</jats:p> Thermal tolerance and metabolic physiology among redband trout populations in south‐eastern Oregon Journal of Fish Biology |
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2004 |
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Wiley |
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ai |
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ai |
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Journal of Fish Biology |
| source_id |
49 |
| title |
Thermal tolerance and metabolic physiology among redband trout populations in south‐eastern Oregon |
| title_unstemmed |
Thermal tolerance and metabolic physiology among redband trout populations in south‐eastern Oregon |
| title_full |
Thermal tolerance and metabolic physiology among redband trout populations in south‐eastern Oregon |
| title_fullStr |
Thermal tolerance and metabolic physiology among redband trout populations in south‐eastern Oregon |
| title_full_unstemmed |
Thermal tolerance and metabolic physiology among redband trout populations in south‐eastern Oregon |
| title_short |
Thermal tolerance and metabolic physiology among redband trout populations in south‐eastern Oregon |
| title_sort |
thermal tolerance and metabolic physiology among redband trout populations in south‐eastern oregon |
| topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
| url |
http://dx.doi.org/10.1111/j.0022-1112.2004.00292.x |
| publishDate |
2004 |
| physical |
310-335 |
| description |
<jats:p>Streamside measurements of critical thermal maxima (<jats:italic>T</jats:italic><jats:sub>crit</jats:sub>), swimming performance (<jats:italic>U</jats:italic><jats:sub>crit</jats:sub>), and routine (<jats:italic>R</jats:italic><jats:sub>r</jats:sub>) and maximum (<jats:italic>R</jats:italic><jats:sub>max</jats:sub>) metabolic rates were performed on three populations of genetically distinct redband trout <jats:italic>Oncorhynchus mykiss</jats:italic> in the high‐desert region of south‐eastern Oregon. The <jats:italic>T</jats:italic><jats:sub>crit</jats:sub> values (29·4 ± 0·1° C) for small (40–140 g) redband trout from the three streams, and large (400–1400 g) redband trout at Bridge Creek were not different, and were comparable to published values for other salmonids. At high water temperatures (24–28° C), large fish incurred higher metabolic costs and were more thermally sensitive than small fish. <jats:italic>U</jats:italic><jats:sub>crit</jats:sub>(3·6 ± 0·1 <jats:italic>L</jats:italic><jats:sub>F</jats:sub> s<jats:sup>−1</jats:sup>), <jats:italic>R</jats:italic><jats:sub><jats:italic>r</jats:italic></jats:sub>(200 ± 13 mg O<jats:sub>2</jats:sub> kg<jats:sup>−0·830</jats:sup> h<jats:sup>−1</jats:sup>) and metabolic power (533 ± 22 mg O<jats:sub>2</jats:sub> kg<jats:sup>−0·882</jats:sup> h<jats:sup>−1</jats:sup>) were not significantly different between populations of small redband trout at 24° C. <jats:italic>R</jats:italic><jats:sub>max</jats:sub> and metabolic power, however, were higher than previous measurements for rainbow trout at these temperatures. Fish from Bridge Creek had a 30% lower minimum total cost of transport (<jats:italic>C</jats:italic><jats:sub>min</jats:sub>), exhibited a lower refusal rate, and had smaller hearts than fish at 12‐mile or Rock Creeks. In contrast, no differences in <jats:italic>U</jats:italic><jats:sub>crit</jats:sub> or metabolism were observed between the two size classes of redband trout, although <jats:italic>C</jats:italic><jats:sub>min</jats:sub> was significantly lower for large fish at all swimming speeds. Biochemical analyses revealed that fish from 12‐mile Creek, which had the highest refusal rate (36%), were moderately hyperkalemic and had substantially lower circulating levels of free fatty acids, triglycerides and albumin. Aerobic and anaerobic enzyme activities in axial white muscle, however, were not different between populations, and morphological features were similar. Results of this study: 1) suggest that the physiological mechanisms that determine <jats:italic>T</jats:italic><jats:sub>crit</jats:sub> in salmonids are highly conserved; 2) show that adult (large) redband trout are more susceptible to the negative affects of elevated temperatures than small redband trout; 3) demonstrate that swimming efficiency can vary considerably between redband trout populations; 4) suggest that metabolic energy stores correlate positively with swimming behaviour of redband trout at high water temperatures; 5) question the use of <jats:italic>T</jats:italic><jats:sub>crit</jats:sub> for assessing physiological function and defining thermal habitat requirements of stream‐dwelling salmonids like the redband trout.</jats:p> |
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| description | <jats:p>Streamside measurements of critical thermal maxima (<jats:italic>T</jats:italic><jats:sub>crit</jats:sub>), swimming performance (<jats:italic>U</jats:italic><jats:sub>crit</jats:sub>), and routine (<jats:italic>R</jats:italic><jats:sub>r</jats:sub>) and maximum (<jats:italic>R</jats:italic><jats:sub>max</jats:sub>) metabolic rates were performed on three populations of genetically distinct redband trout <jats:italic>Oncorhynchus mykiss</jats:italic> in the high‐desert region of south‐eastern Oregon. The <jats:italic>T</jats:italic><jats:sub>crit</jats:sub> values (29·4 ± 0·1° C) for small (40–140 g) redband trout from the three streams, and large (400–1400 g) redband trout at Bridge Creek were not different, and were comparable to published values for other salmonids. At high water temperatures (24–28° C), large fish incurred higher metabolic costs and were more thermally sensitive than small fish. <jats:italic>U</jats:italic><jats:sub>crit</jats:sub>(3·6 ± 0·1 <jats:italic>L</jats:italic><jats:sub>F</jats:sub> s<jats:sup>−1</jats:sup>), <jats:italic>R</jats:italic><jats:sub><jats:italic>r</jats:italic></jats:sub>(200 ± 13 mg O<jats:sub>2</jats:sub> kg<jats:sup>−0·830</jats:sup> h<jats:sup>−1</jats:sup>) and metabolic power (533 ± 22 mg O<jats:sub>2</jats:sub> kg<jats:sup>−0·882</jats:sup> h<jats:sup>−1</jats:sup>) were not significantly different between populations of small redband trout at 24° C. <jats:italic>R</jats:italic><jats:sub>max</jats:sub> and metabolic power, however, were higher than previous measurements for rainbow trout at these temperatures. Fish from Bridge Creek had a 30% lower minimum total cost of transport (<jats:italic>C</jats:italic><jats:sub>min</jats:sub>), exhibited a lower refusal rate, and had smaller hearts than fish at 12‐mile or Rock Creeks. In contrast, no differences in <jats:italic>U</jats:italic><jats:sub>crit</jats:sub> or metabolism were observed between the two size classes of redband trout, although <jats:italic>C</jats:italic><jats:sub>min</jats:sub> was significantly lower for large fish at all swimming speeds. Biochemical analyses revealed that fish from 12‐mile Creek, which had the highest refusal rate (36%), were moderately hyperkalemic and had substantially lower circulating levels of free fatty acids, triglycerides and albumin. Aerobic and anaerobic enzyme activities in axial white muscle, however, were not different between populations, and morphological features were similar. Results of this study: 1) suggest that the physiological mechanisms that determine <jats:italic>T</jats:italic><jats:sub>crit</jats:sub> in salmonids are highly conserved; 2) show that adult (large) redband trout are more susceptible to the negative affects of elevated temperatures than small redband trout; 3) demonstrate that swimming efficiency can vary considerably between redband trout populations; 4) suggest that metabolic energy stores correlate positively with swimming behaviour of redband trout at high water temperatures; 5) question the use of <jats:italic>T</jats:italic><jats:sub>crit</jats:sub> for assessing physiological function and defining thermal habitat requirements of stream‐dwelling salmonids like the redband trout.</jats:p> |
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| spelling | Rodnick, K. J. Gamperl, A. K. Lizars, K. R. Bennett, M. T. Rausch, R. N. Keeley, E. R. 0022-1112 1095-8649 Wiley Aquatic Science Ecology, Evolution, Behavior and Systematics http://dx.doi.org/10.1111/j.0022-1112.2004.00292.x <jats:p>Streamside measurements of critical thermal maxima (<jats:italic>T</jats:italic><jats:sub>crit</jats:sub>), swimming performance (<jats:italic>U</jats:italic><jats:sub>crit</jats:sub>), and routine (<jats:italic>R</jats:italic><jats:sub>r</jats:sub>) and maximum (<jats:italic>R</jats:italic><jats:sub>max</jats:sub>) metabolic rates were performed on three populations of genetically distinct redband trout <jats:italic>Oncorhynchus mykiss</jats:italic> in the high‐desert region of south‐eastern Oregon. The <jats:italic>T</jats:italic><jats:sub>crit</jats:sub> values (29·4 ± 0·1° C) for small (40–140 g) redband trout from the three streams, and large (400–1400 g) redband trout at Bridge Creek were not different, and were comparable to published values for other salmonids. At high water temperatures (24–28° C), large fish incurred higher metabolic costs and were more thermally sensitive than small fish. <jats:italic>U</jats:italic><jats:sub>crit</jats:sub>(3·6 ± 0·1 <jats:italic>L</jats:italic><jats:sub>F</jats:sub> s<jats:sup>−1</jats:sup>), <jats:italic>R</jats:italic><jats:sub><jats:italic>r</jats:italic></jats:sub>(200 ± 13 mg O<jats:sub>2</jats:sub> kg<jats:sup>−0·830</jats:sup> h<jats:sup>−1</jats:sup>) and metabolic power (533 ± 22 mg O<jats:sub>2</jats:sub> kg<jats:sup>−0·882</jats:sup> h<jats:sup>−1</jats:sup>) were not significantly different between populations of small redband trout at 24° C. <jats:italic>R</jats:italic><jats:sub>max</jats:sub> and metabolic power, however, were higher than previous measurements for rainbow trout at these temperatures. Fish from Bridge Creek had a 30% lower minimum total cost of transport (<jats:italic>C</jats:italic><jats:sub>min</jats:sub>), exhibited a lower refusal rate, and had smaller hearts than fish at 12‐mile or Rock Creeks. In contrast, no differences in <jats:italic>U</jats:italic><jats:sub>crit</jats:sub> or metabolism were observed between the two size classes of redband trout, although <jats:italic>C</jats:italic><jats:sub>min</jats:sub> was significantly lower for large fish at all swimming speeds. Biochemical analyses revealed that fish from 12‐mile Creek, which had the highest refusal rate (36%), were moderately hyperkalemic and had substantially lower circulating levels of free fatty acids, triglycerides and albumin. Aerobic and anaerobic enzyme activities in axial white muscle, however, were not different between populations, and morphological features were similar. Results of this study: 1) suggest that the physiological mechanisms that determine <jats:italic>T</jats:italic><jats:sub>crit</jats:sub> in salmonids are highly conserved; 2) show that adult (large) redband trout are more susceptible to the negative affects of elevated temperatures than small redband trout; 3) demonstrate that swimming efficiency can vary considerably between redband trout populations; 4) suggest that metabolic energy stores correlate positively with swimming behaviour of redband trout at high water temperatures; 5) question the use of <jats:italic>T</jats:italic><jats:sub>crit</jats:sub> for assessing physiological function and defining thermal habitat requirements of stream‐dwelling salmonids like the redband trout.</jats:p> Thermal tolerance and metabolic physiology among redband trout populations in south‐eastern Oregon Journal of Fish Biology |
| spellingShingle | Rodnick, K. J., Gamperl, A. K., Lizars, K. R., Bennett, M. T., Rausch, R. N., Keeley, E. R., Journal of Fish Biology, Thermal tolerance and metabolic physiology among redband trout populations in south‐eastern Oregon, Aquatic Science, Ecology, Evolution, Behavior and Systematics |
| title | Thermal tolerance and metabolic physiology among redband trout populations in south‐eastern Oregon |
| title_full | Thermal tolerance and metabolic physiology among redband trout populations in south‐eastern Oregon |
| title_fullStr | Thermal tolerance and metabolic physiology among redband trout populations in south‐eastern Oregon |
| title_full_unstemmed | Thermal tolerance and metabolic physiology among redband trout populations in south‐eastern Oregon |
| title_short | Thermal tolerance and metabolic physiology among redband trout populations in south‐eastern Oregon |
| title_sort | thermal tolerance and metabolic physiology among redband trout populations in south‐eastern oregon |
| title_unstemmed | Thermal tolerance and metabolic physiology among redband trout populations in south‐eastern Oregon |
| topic | Aquatic Science, Ecology, Evolution, Behavior and Systematics |
| url | http://dx.doi.org/10.1111/j.0022-1112.2004.00292.x |