The influence of flume length and group size on swimming performance in shortnose sturgeon Acipenser brevirostrum.
Identifieur interne : 000337 ( PubMed/Corpus ); précédent : 000336; suivant : 000338The influence of flume length and group size on swimming performance in shortnose sturgeon Acipenser brevirostrum.
Auteurs : D. Deslauriers ; J D KiefferSource :
- Journal of fish biology [ 1095-8649 ] ; 2011.
English descriptors
- KwdEn :
- MESH :
- instrumentation : Fisheries.
- physiology : Fishes, Physical Endurance, Swimming.
- Animals, Population Density, Time Factors.
Abstract
The main objectives of this study were to determine optimal methodologies to assess the general swimming performance of juvenile shortnose sturgeon Acipenser brevirostrum. Swimming densities (group v. individual swimming) and flume length (2 v. 1 m) were altered to verify if any of those variables affected performance (i.e. time to fatigue) during critical swimming (U(crit)) and endurance tests. Results for both U(crit) and endurance swimming were not significantly different between fish swum in groups of five or fish swum individually. The U(crit) values, however, were c. 22% higher for fish swum in a longer flume. Although swimming fish in groups did not improve swimming performance, group swimming lowered the variance of the data. Results also reveal that juvenile A. brevirostrum may not possess an ability to swim at high speeds (i.e. burst phase) for long periods.
DOI: 10.1111/j.1095-8649.2011.03094.x
PubMed: 22026598
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pubmed:22026598Le document en format XML
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<front><div type="abstract" xml:lang="en">The main objectives of this study were to determine optimal methodologies to assess the general swimming performance of juvenile shortnose sturgeon Acipenser brevirostrum. Swimming densities (group v. individual swimming) and flume length (2 v. 1 m) were altered to verify if any of those variables affected performance (i.e. time to fatigue) during critical swimming (U(crit)) and endurance tests. Results for both U(crit) and endurance swimming were not significantly different between fish swum in groups of five or fish swum individually. The U(crit) values, however, were c. 22% higher for fish swum in a longer flume. Although swimming fish in groups did not improve swimming performance, group swimming lowered the variance of the data. Results also reveal that juvenile A. brevirostrum may not possess an ability to swim at high speeds (i.e. burst phase) for long periods.</div>
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<Abstract><AbstractText>The main objectives of this study were to determine optimal methodologies to assess the general swimming performance of juvenile shortnose sturgeon Acipenser brevirostrum. Swimming densities (group v. individual swimming) and flume length (2 v. 1 m) were altered to verify if any of those variables affected performance (i.e. time to fatigue) during critical swimming (U(crit)) and endurance tests. Results for both U(crit) and endurance swimming were not significantly different between fish swum in groups of five or fish swum individually. The U(crit) values, however, were c. 22% higher for fish swum in a longer flume. Although swimming fish in groups did not improve swimming performance, group swimming lowered the variance of the data. Results also reveal that juvenile A. brevirostrum may not possess an ability to swim at high speeds (i.e. burst phase) for long periods.</AbstractText>
<CopyrightInformation>© 2011 The Authors. Journal of Fish Biology © 2011 The Fisheries Society of the British Isles.</CopyrightInformation>
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