| Rainbow trout consume less oxygen in turbulence: the energetics of swimming behaviors at different speeds. | |
| | |
MedLine Citation:
|
PMID: 21490251 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Measuring the rate of consumption of oxygen ( ) during swimming reveals the energetics of fish locomotion. We show that rainbow trout have substantially different oxygen requirements for station holding depending on which hydrodynamic microhabitats they choose to occupy around a cylinder. We used intermittent flow respirometry to show that an energetics hierarchy, whereby certain behaviors are more energetically costly than others, exists both across behaviors at a fixed flow velocity and across speeds for a single behavior. At 3.5 L s(-1) (L is total body length) entraining has the lowest , followed by Kármán gaiting, bow waking and then free stream swimming. As flow speed increases the costs associated with a particular behavior around the cylinder changes in unexpected ways compared with free stream swimming. At times, actually decreases as flow velocity increases. Entraining demands the least oxygen at 1.8 L s(-1) and 3.5 L s(-1), whereas bow waking requires the least oxygen at 5.0 L s(-1). Consequently, a behavior at one speed may have a similar cost to another behavior at another speed. We directly confirm that fish Kármán gaiting in a vortex street gain an energetic advantage from vortices beyond the benefit of swimming in a velocity deficit. We propose that the ability to exploit velocity gradients as well as stabilization costs shape the complex patterns of oxygen consumption for behaviors around cylinders. Measuring for station holding in turbulent flows advances our attempts to develop ecologically relevant approaches to evaluating fish swimming performance. |
| | |
Authors:
|
Masashige Taguchi; James C Liao |
Publication Detail:
|
Type: Journal Article; Research Support, N.I.H., Extramural |
Journal Detail:
|
Title: The Journal of experimental biology Volume: 214 ISSN: 1477-9145 ISO Abbreviation: J. Exp. Biol. Publication Date: 2011 May |
Date Detail:
|
Created Date: 2011-04-14 Completed Date: 2011-08-26 Revised Date: 2012-05-01 |
Medline Journal Info:
|
Nlm Unique ID: 0243705 Medline TA: J Exp Biol Country: England |
Other Details:
|
Languages: eng Pagination: 1428-36 Citation Subset: IM |
Affiliation:
|
The Whitney Laboratory for Marine Bioscience, Department of Biology, University of Florida, 9505 Ocean Shore Boulevard, St Augustine, FL 32080, USA. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Analysis of Variance Animals Behavior, Animal / physiology* Energy Metabolism / physiology* Models, Biological Oncorhynchus mykiss / metabolism* Oxygen Consumption / physiology* Swimming / physiology* Water Movements* |
| Grant Support | |
ID/Acronym/Agency:
|
1R01DC010809-01/DC/NIDCD NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: The effect of developmental stage on the sensitivity of cell and body size to hypoxia in Drosophila ...
Next Document: Physiology of invasion: cane toads are constrained by thermal effects on physiological mechanisms th...