Individual differences in dominance-related traits drive dispersal and settlement in hatchery-reared juvenile brown trout

Effective management of exploited populations is based on an understanding of population dynamics and evolutionary processes. In spatially structured populations, dispersal is a central process that ultimately can affect population growth and viability. It can be influenced by environmental conditio...

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Detalles Bibliográficos
Autores: Sánchez-González, Jorge R., Nicieza, Alfredo G.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:10459.1/71053
Acceso en línea:https://doi.org/10.1038/s41598-021-86613-4
http://hdl.handle.net/10459.1/71053
Access Level:acceso abierto
Palabra clave:Behavioural ecology
Ecology
Ecophysiology
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spelling Individual differences in dominance-related traits drive dispersal and settlement in hatchery-reared juvenile brown troutSánchez-González, Jorge R.Nicieza, Alfredo G.Behavioural ecologyEcologyEcophysiologyEffective management of exploited populations is based on an understanding of population dynamics and evolutionary processes. In spatially structured populations, dispersal is a central process that ultimately can affect population growth and viability. It can be influenced by environmental conditions, individual phenotypes, and stochastic factors. However, we have a limited knowledge of the relative contribution of these components and its interactions, and which traits can be used as reliable predictors of the dispersal ability. Here, we conducted a longitudinal field experiment aimed to identify traits which can be used as proxy for dispersal in juvenile brown trout (Salmo trutta L.). We measured body size and standard metabolic rates, and estimated body shapes for 212 hatchery-reared juvenile fish that were marked with individual codes and released in a small coastal stream in northwest Spain. We registered fish positions and distances to the releasing point after 19, 41, 60 and 158 days in the stream. We detected a high autocorrelation of dispersal distances, demonstrating that most individuals settle down relatively soon and then hold stable positions over the study period. Body size and fish shape were reliable predictors of dispersal, with bigger and more robust-set individuals being more likely to settle closer to the release site than smaller and more elongated fish. In addition, the analysis of spacing and spatial patterns indicated that the dispersal of introduced fish could affect the distribution of resident conspecifics. All together, these results suggest that stocking programs aimed to the enhancement of overexploited populations at fine spatial scales can be optimized by adjusting the size and shape of the introduced fish to specific management targets and environmental conditions.This study was supported by grants CN-07-164 (Principality of Asturias), MEC-CGL2004-03239/BOS and MMA/86-2003-1 to A.G. Nicieza, and a FICYT PhD fellowship (BP04-147) to J.R. Sánchez-González.Springer Nature2021info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttps://doi.org/10.1038/s41598-021-86613-4http://hdl.handle.net/10459.1/71053reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.1038/s41598-021-86613-4Scientific Reports, 2021, vol. 11, article number 7277cc-by (c) Sánchez-González et al., 2021info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/oai:recercat.cat:10459.1/710532026-05-29T05:05:01Z
dc.title.none.fl_str_mv Individual differences in dominance-related traits drive dispersal and settlement in hatchery-reared juvenile brown trout
title Individual differences in dominance-related traits drive dispersal and settlement in hatchery-reared juvenile brown trout
spellingShingle Individual differences in dominance-related traits drive dispersal and settlement in hatchery-reared juvenile brown trout
Sánchez-González, Jorge R.
Behavioural ecology
Ecology
Ecophysiology
title_short Individual differences in dominance-related traits drive dispersal and settlement in hatchery-reared juvenile brown trout
title_full Individual differences in dominance-related traits drive dispersal and settlement in hatchery-reared juvenile brown trout
title_fullStr Individual differences in dominance-related traits drive dispersal and settlement in hatchery-reared juvenile brown trout
title_full_unstemmed Individual differences in dominance-related traits drive dispersal and settlement in hatchery-reared juvenile brown trout
title_sort Individual differences in dominance-related traits drive dispersal and settlement in hatchery-reared juvenile brown trout
dc.creator.none.fl_str_mv Sánchez-González, Jorge R.
Nicieza, Alfredo G.
author Sánchez-González, Jorge R.
author_facet Sánchez-González, Jorge R.
Nicieza, Alfredo G.
author_role author
author2 Nicieza, Alfredo G.
author2_role author
dc.subject.none.fl_str_mv Behavioural ecology
Ecology
Ecophysiology
topic Behavioural ecology
Ecology
Ecophysiology
description Effective management of exploited populations is based on an understanding of population dynamics and evolutionary processes. In spatially structured populations, dispersal is a central process that ultimately can affect population growth and viability. It can be influenced by environmental conditions, individual phenotypes, and stochastic factors. However, we have a limited knowledge of the relative contribution of these components and its interactions, and which traits can be used as reliable predictors of the dispersal ability. Here, we conducted a longitudinal field experiment aimed to identify traits which can be used as proxy for dispersal in juvenile brown trout (Salmo trutta L.). We measured body size and standard metabolic rates, and estimated body shapes for 212 hatchery-reared juvenile fish that were marked with individual codes and released in a small coastal stream in northwest Spain. We registered fish positions and distances to the releasing point after 19, 41, 60 and 158 days in the stream. We detected a high autocorrelation of dispersal distances, demonstrating that most individuals settle down relatively soon and then hold stable positions over the study period. Body size and fish shape were reliable predictors of dispersal, with bigger and more robust-set individuals being more likely to settle closer to the release site than smaller and more elongated fish. In addition, the analysis of spacing and spatial patterns indicated that the dispersal of introduced fish could affect the distribution of resident conspecifics. All together, these results suggest that stocking programs aimed to the enhancement of overexploited populations at fine spatial scales can be optimized by adjusting the size and shape of the introduced fish to specific management targets and environmental conditions.
publishDate 2021
dc.date.none.fl_str_mv 2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://doi.org/10.1038/s41598-021-86613-4
http://hdl.handle.net/10459.1/71053
url https://doi.org/10.1038/s41598-021-86613-4
http://hdl.handle.net/10459.1/71053
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1038/s41598-021-86613-4
Scientific Reports, 2021, vol. 11, article number 7277
dc.rights.none.fl_str_mv cc-by (c) Sánchez-González et al., 2021
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
rights_invalid_str_mv cc-by (c) Sánchez-González et al., 2021
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Springer Nature
publisher.none.fl_str_mv Springer Nature
dc.source.none.fl_str_mv reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
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