The Effects of Temperature on Gut Blood Flow and Gut Motility in Fish
In order for a fish to grow and thrive, the gut must function efficiently. This is achieved through a range of processes, including controlled patterns of gut motility and modifications in gut blood flow. How these processes are affected by long and short-term changes in ambient temperature was the...
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ftunivgoeteborg:oai:gupea.ub.gu.se:2077/28573 2023-10-29T02:34:41+01:00 The Effects of Temperature on Gut Blood Flow and Gut Motility in Fish Gräns, Albin 2012-03-09 application/pdf http://hdl.handle.net/2077/28573 eng eng I. Gräns A, Albertsson F, Axelsson M, Olsson C (2009) Postprandial changes in enteric electrical activity and gut blood flow in rainbow trout (Oncorhynchus mykiss) acclimated to different temperatures. Journal of Experimental Biology, 212, 2550-2557::doi::10.1242/jeb.030593 II. Gräns A, Seth H, Axelsson M, Sandblom E, Albertsson F, Wiklander K, Olsson C (2012) Effects of acute temperature changes on gut physiology in two species of sculpin from the west coast of Greenland (manuscript) III. Gräns A, Axelsson M, Olsson C, Höjesjö J, Pitsillides K, Kaufman R, Cech J (2009) A fully implantable multi-channel biotelemetry system for measurement of blood flow and temperature: a first evaluation in the green sturgeon. Hydrobiologia, 619, 11-25::doi::10.1007/s10750-008-9578-7 IV. Gräns A, Olsson C, Pitsillides K, Nelson H, Cech J, Axelsson M (2010) Effects of feeding on thermoregulatory behaviours and gut blood flow in white sturgeon (Acipenser transmontanus) using biotelemetry in combination with standard techniques. Journal of Experimental Biology, 213, 3198-3206::doi::10.1242/jeb.043570 ISBN 978-91-628-8446-8 http://hdl.handle.net/2077/28573 zoofysiologi Text Doctoral thesis Doctor of Philosophy 2012 ftunivgoeteborg 2023-10-04T21:21:05Z In order for a fish to grow and thrive, the gut must function efficiently. This is achieved through a range of processes, including controlled patterns of gut motility and modifications in gut blood flow. How these processes are affected by long and short-term changes in ambient temperature was the main focus of this thesis. After acclimation to a higher temperature, the interdigestive motility of rainbow trout was higher. This indicates an increased demand for movements involved in the housekeeping functions of the gut. Temperature acclimation did not affect the postprandial response, in neither gut blood flow nor gut motility. These results indicate that thermal compensation processes work to neutralize acute thermal effects, so that these two functions are maintained at a certain rate. Also, in vitro preparations of isolated intestine showed signs of thermal compensation processes, as the acute temperature effects on the response to the cholinergic agonist carbachol were abolished after a temperature acclimation period. Fish species studied responded very differently to an acute change in temperature. A relatively linear correlation with temperature was seen in, both gut blood flow and gut motility, in two species of sculpins (shorthorn and Arctic sculpin). The gut blood flow, in both green and white sturgeon, was unaffected by moderate fluctuations in water temperature during the interdigestive state. White sturgeon were also studied after feeding and a correlation between gut blood flow and temperature was observed, in a similar fashion as for the unfed sculpins. Thermoregulatory behaviours observed in white sturgeon, show that moving between different temperatures, after a meal, will have a great influence on the volume of blood distributed to the gut. An increase in gut blood flow is probably an important factor explaining why it can be beneficial to migrate into warmer waters after feeding. However, if combining the presented data with data from previous studies, it shows that perfusion of the gut can ... Doctoral or Postdoctoral Thesis Arctic University of Gothenburg: GUPEA (Gothenburg University Publications Electronic Archive) |
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Open Polar |
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University of Gothenburg: GUPEA (Gothenburg University Publications Electronic Archive) |
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ftunivgoeteborg |
language |
English |
topic |
zoofysiologi |
spellingShingle |
zoofysiologi Gräns, Albin The Effects of Temperature on Gut Blood Flow and Gut Motility in Fish |
topic_facet |
zoofysiologi |
description |
In order for a fish to grow and thrive, the gut must function efficiently. This is achieved through a range of processes, including controlled patterns of gut motility and modifications in gut blood flow. How these processes are affected by long and short-term changes in ambient temperature was the main focus of this thesis. After acclimation to a higher temperature, the interdigestive motility of rainbow trout was higher. This indicates an increased demand for movements involved in the housekeeping functions of the gut. Temperature acclimation did not affect the postprandial response, in neither gut blood flow nor gut motility. These results indicate that thermal compensation processes work to neutralize acute thermal effects, so that these two functions are maintained at a certain rate. Also, in vitro preparations of isolated intestine showed signs of thermal compensation processes, as the acute temperature effects on the response to the cholinergic agonist carbachol were abolished after a temperature acclimation period. Fish species studied responded very differently to an acute change in temperature. A relatively linear correlation with temperature was seen in, both gut blood flow and gut motility, in two species of sculpins (shorthorn and Arctic sculpin). The gut blood flow, in both green and white sturgeon, was unaffected by moderate fluctuations in water temperature during the interdigestive state. White sturgeon were also studied after feeding and a correlation between gut blood flow and temperature was observed, in a similar fashion as for the unfed sculpins. Thermoregulatory behaviours observed in white sturgeon, show that moving between different temperatures, after a meal, will have a great influence on the volume of blood distributed to the gut. An increase in gut blood flow is probably an important factor explaining why it can be beneficial to migrate into warmer waters after feeding. However, if combining the presented data with data from previous studies, it shows that perfusion of the gut can ... |
format |
Doctoral or Postdoctoral Thesis |
author |
Gräns, Albin |
author_facet |
Gräns, Albin |
author_sort |
Gräns, Albin |
title |
The Effects of Temperature on Gut Blood Flow and Gut Motility in Fish |
title_short |
The Effects of Temperature on Gut Blood Flow and Gut Motility in Fish |
title_full |
The Effects of Temperature on Gut Blood Flow and Gut Motility in Fish |
title_fullStr |
The Effects of Temperature on Gut Blood Flow and Gut Motility in Fish |
title_full_unstemmed |
The Effects of Temperature on Gut Blood Flow and Gut Motility in Fish |
title_sort |
effects of temperature on gut blood flow and gut motility in fish |
publishDate |
2012 |
url |
http://hdl.handle.net/2077/28573 |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
I. Gräns A, Albertsson F, Axelsson M, Olsson C (2009) Postprandial changes in enteric electrical activity and gut blood flow in rainbow trout (Oncorhynchus mykiss) acclimated to different temperatures. Journal of Experimental Biology, 212, 2550-2557::doi::10.1242/jeb.030593 II. Gräns A, Seth H, Axelsson M, Sandblom E, Albertsson F, Wiklander K, Olsson C (2012) Effects of acute temperature changes on gut physiology in two species of sculpin from the west coast of Greenland (manuscript) III. Gräns A, Axelsson M, Olsson C, Höjesjö J, Pitsillides K, Kaufman R, Cech J (2009) A fully implantable multi-channel biotelemetry system for measurement of blood flow and temperature: a first evaluation in the green sturgeon. Hydrobiologia, 619, 11-25::doi::10.1007/s10750-008-9578-7 IV. Gräns A, Olsson C, Pitsillides K, Nelson H, Cech J, Axelsson M (2010) Effects of feeding on thermoregulatory behaviours and gut blood flow in white sturgeon (Acipenser transmontanus) using biotelemetry in combination with standard techniques. Journal of Experimental Biology, 213, 3198-3206::doi::10.1242/jeb.043570 ISBN 978-91-628-8446-8 http://hdl.handle.net/2077/28573 |
_version_ |
1781057375021563904 |