Dispersal Patterns, Active Behaviour, and Flow Environment during Early Life History of Coastal Cold Water Fishes
During the pelagic larval phase, fish dispersal may be influenced passively by surface currents or actively determined by swimming behaviour. In situ observations of larval swimming are few given the constraints of field sampling. Active behaviour is therefore often inferred from spatial patterns in...
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ftpubmed:oai:pubmedcentral.nih.gov:3460877 2023-05-15T17:22:31+02:00 Dispersal Patterns, Active Behaviour, and Flow Environment during Early Life History of Coastal Cold Water Fishes Stanley, Ryan Snelgrove, Paul V. R. deYoung, Brad Gregory, Robert S. 2012-09-28 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3460877 http://www.ncbi.nlm.nih.gov/pubmed/23029455 https://doi.org/10.1371/journal.pone.0046266 en eng Public Library of Science http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3460877 http://www.ncbi.nlm.nih.gov/pubmed/23029455 http://dx.doi.org/10.1371/journal.pone.0046266 This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. CC-BY Research Article Text 2012 ftpubmed https://doi.org/10.1371/journal.pone.0046266 2013-09-04T13:55:34Z During the pelagic larval phase, fish dispersal may be influenced passively by surface currents or actively determined by swimming behaviour. In situ observations of larval swimming are few given the constraints of field sampling. Active behaviour is therefore often inferred from spatial patterns in the field, laboratory studies, or hydrodynamic theory, but rarely are these approaches considered in concert. Ichthyoplankton survey data collected during 2004 and 2006 from coastal Newfoundland show that changes in spatial heterogeneity for multiple species do not conform to predictions based on passive transport. We evaluated the interaction of individual larvae with their environment by calculating Reynolds number as a function of ontogeny. Typically, larvae hatch into a viscous environment in which swimming is inefficient, and later grow into more efficient intermediate and inertial swimming environments. Swimming is therefore closely related to length, not only because of swimming capacity but also in how larvae experience viscosity. Six of eight species sampled demonstrated consistent changes in spatial patchiness and concomitant increases in spatial heterogeneity as they transitioned into more favourable hydrodynamic swimming environments, suggesting an active behavioural element to dispersal. We propose the tandem assessment of spatial heterogeneity and hydrodynamic environment as a potential approach to understand and predict the onset of ecologically significant swimming behaviour of larval fishes in the field. Text Newfoundland PubMed Central (PMC) PLoS ONE 7 9 e46266 |
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Research Article |
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Research Article Stanley, Ryan Snelgrove, Paul V. R. deYoung, Brad Gregory, Robert S. Dispersal Patterns, Active Behaviour, and Flow Environment during Early Life History of Coastal Cold Water Fishes |
topic_facet |
Research Article |
description |
During the pelagic larval phase, fish dispersal may be influenced passively by surface currents or actively determined by swimming behaviour. In situ observations of larval swimming are few given the constraints of field sampling. Active behaviour is therefore often inferred from spatial patterns in the field, laboratory studies, or hydrodynamic theory, but rarely are these approaches considered in concert. Ichthyoplankton survey data collected during 2004 and 2006 from coastal Newfoundland show that changes in spatial heterogeneity for multiple species do not conform to predictions based on passive transport. We evaluated the interaction of individual larvae with their environment by calculating Reynolds number as a function of ontogeny. Typically, larvae hatch into a viscous environment in which swimming is inefficient, and later grow into more efficient intermediate and inertial swimming environments. Swimming is therefore closely related to length, not only because of swimming capacity but also in how larvae experience viscosity. Six of eight species sampled demonstrated consistent changes in spatial patchiness and concomitant increases in spatial heterogeneity as they transitioned into more favourable hydrodynamic swimming environments, suggesting an active behavioural element to dispersal. We propose the tandem assessment of spatial heterogeneity and hydrodynamic environment as a potential approach to understand and predict the onset of ecologically significant swimming behaviour of larval fishes in the field. |
format |
Text |
author |
Stanley, Ryan Snelgrove, Paul V. R. deYoung, Brad Gregory, Robert S. |
author_facet |
Stanley, Ryan Snelgrove, Paul V. R. deYoung, Brad Gregory, Robert S. |
author_sort |
Stanley, Ryan |
title |
Dispersal Patterns, Active Behaviour, and Flow Environment during Early Life History of Coastal Cold Water Fishes |
title_short |
Dispersal Patterns, Active Behaviour, and Flow Environment during Early Life History of Coastal Cold Water Fishes |
title_full |
Dispersal Patterns, Active Behaviour, and Flow Environment during Early Life History of Coastal Cold Water Fishes |
title_fullStr |
Dispersal Patterns, Active Behaviour, and Flow Environment during Early Life History of Coastal Cold Water Fishes |
title_full_unstemmed |
Dispersal Patterns, Active Behaviour, and Flow Environment during Early Life History of Coastal Cold Water Fishes |
title_sort |
dispersal patterns, active behaviour, and flow environment during early life history of coastal cold water fishes |
publisher |
Public Library of Science |
publishDate |
2012 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3460877 http://www.ncbi.nlm.nih.gov/pubmed/23029455 https://doi.org/10.1371/journal.pone.0046266 |
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Newfoundland |
genre_facet |
Newfoundland |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3460877 http://www.ncbi.nlm.nih.gov/pubmed/23029455 http://dx.doi.org/10.1371/journal.pone.0046266 |
op_rights |
This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1371/journal.pone.0046266 |
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PLoS ONE |
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7 |
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9 |
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e46266 |
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