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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Published in:PLoS ONE
Main Authors: Stanley, Ryan, Snelgrove, Paul, de Young, Brad, Gregory, Robert S.
Format: Article in Journal/Newspaper
Language:English
Published: Public Library of Science 2012
Subjects:
Online Access:https://research.library.mun.ca/607/
https://research.library.mun.ca/607/1/dispersal_patterns_active_behaviour.pdf
https://research.library.mun.ca/607/3/dispersal_patterns_active_behaviour.pdf
https://doi.org/10.1371/journal.pone.0046266
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spelling ftmemorialuniv:oai:research.library.mun.ca:607 2024-09-15T18:20:12+00:00 Dispersal Patterns, Active Behaviour, and Flow Environment during Early Life History of Coastal Cold Water Fishes Stanley, Ryan Snelgrove, Paul de Young, Brad Gregory, Robert S. 2012-09-28 application/pdf https://research.library.mun.ca/607/ https://research.library.mun.ca/607/1/dispersal_patterns_active_behaviour.pdf https://research.library.mun.ca/607/3/dispersal_patterns_active_behaviour.pdf https://doi.org/10.1371/journal.pone.0046266 en eng Public Library of Science https://research.library.mun.ca/607/1/dispersal_patterns_active_behaviour.pdf https://research.library.mun.ca/607/3/dispersal_patterns_active_behaviour.pdf Stanley, Ryan <https://research.library.mun.ca/view/creator_az/Stanley=3ARyan=3A=3A.html> and Snelgrove, Paul <https://research.library.mun.ca/view/creator_az/Snelgrove=3APaul=3A=3A.html> and de Young, Brad <https://research.library.mun.ca/view/creator_az/de_Young=3ABrad=3A=3A.html> and Gregory, Robert S. <https://research.library.mun.ca/view/creator_az/Gregory=3ARobert_S=2E_=3A=3A.html> (2012) Dispersal Patterns, Active Behaviour, and Flow Environment during Early Life History of Coastal Cold Water Fishes. PLoS ONE, 7 (9). pp. 1-11. ISSN 1932-6203 cc_by Q Science (General) Article PeerReviewed 2012 ftmemorialuniv https://doi.org/10.1371/journal.pone.0046266 2024-07-10T03:16:00Z 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. Article in Journal/Newspaper Newfoundland Memorial University of Newfoundland: Research Repository PLoS ONE 7 9 e46266
institution Open Polar
collection Memorial University of Newfoundland: Research Repository
op_collection_id ftmemorialuniv
language English
topic Q Science (General)
spellingShingle Q Science (General)
Stanley, Ryan
Snelgrove, Paul
de Young, Brad
Gregory, Robert S.
Dispersal Patterns, Active Behaviour, and Flow Environment during Early Life History of Coastal Cold Water Fishes
topic_facet Q Science (General)
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 Article in Journal/Newspaper
author Stanley, Ryan
Snelgrove, Paul
de Young, Brad
Gregory, Robert S.
author_facet Stanley, Ryan
Snelgrove, Paul
de Young, 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 https://research.library.mun.ca/607/
https://research.library.mun.ca/607/1/dispersal_patterns_active_behaviour.pdf
https://research.library.mun.ca/607/3/dispersal_patterns_active_behaviour.pdf
https://doi.org/10.1371/journal.pone.0046266
genre Newfoundland
genre_facet Newfoundland
op_relation https://research.library.mun.ca/607/1/dispersal_patterns_active_behaviour.pdf
https://research.library.mun.ca/607/3/dispersal_patterns_active_behaviour.pdf
Stanley, Ryan <https://research.library.mun.ca/view/creator_az/Stanley=3ARyan=3A=3A.html> and Snelgrove, Paul <https://research.library.mun.ca/view/creator_az/Snelgrove=3APaul=3A=3A.html> and de Young, Brad <https://research.library.mun.ca/view/creator_az/de_Young=3ABrad=3A=3A.html> and Gregory, Robert S. <https://research.library.mun.ca/view/creator_az/Gregory=3ARobert_S=2E_=3A=3A.html> (2012) Dispersal Patterns, Active Behaviour, and Flow Environment during Early Life History of Coastal Cold Water Fishes. PLoS ONE, 7 (9). pp. 1-11. ISSN 1932-6203
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