Surfing the tide: homeward migration of sea trout (Salmo trutta) in a Patagonian river

Autores
Giese, Adriana Carolina; García Asorey, Martín Ignacio; Casalinuovo, Miguel Ángel; Amaya Santi, María Marcela; Kennedy, Brian Patrick; Pascual, Miguel Alberto
Año de publicación
2022
Idioma
inglés
Tipo de recurso
artículo
Estado
versión enviada
Descripción
This study evaluates the influence of marine and freshwater conditions on the timing of river entry and upstream migration of sea trout (Salmo trutta) in the Grande River of Tierra del Fuego, Patagonia. We analysed the in-river catch-and-release records from a group of fishing lodges that dominate the Grande River fishery during January–April 2008 (n = 5029 fish) as a function of environmental variables: tidal amplitude, stage in the lunar cycle, river discharge, and river water temperature along the homeward migration season. We discuss the value of the daily catch rate as an abundance index in the Grande river, then analyse the temporal structure of the tidal cycle in the Grande River estuary, a macro-tidal environment with a mean tidal amplitude of 5.7 m, and analyse the fit of a generalized additive model to trout catches on a daily basis in four sections along the river to identify the environmental variables that may affect trout abundance throughout the homeward migration. Fish catches in each section of the river were differentially affected by specific environmental variables: tidal amplitude had a positive and significant effect on catches in the lower river sections, whereas water temperature and river discharge significantly affected catches in upper sections (positive effect of temperature; negative effect of discharge). Catches in the lower section clearly reflect the river entry stage of the homeward migration, with a bi-modal shape significantly correlated with the tidal cycle. The first peak was composed mainly of larger multi-sea-winter trout that move upstream, whereas the second one had a wider range of fish lengths, including a large proportion of small and maybe nonreproductive trout that overwinter in the lower river. Based on our results, we conclude that the large tides in the Grande River estuary strongly affect the river entry timing of sea trout. The underlying mechanisms of this effect may be a combination of increased olfactory recognition and increased tidal transport modulated by the seasonal tidal cycle, which operates on trout during coastal migration to produce the pulses observed in the Grande River sea trout run. In the middle and upper sections of the river, where the tidal effect at river entry was dissipated as upstream migration progressed, trout catches increased with water temperature and decreased with river discharge, which may operate through their influence on in-river migration rate and abundance, but also through changes in catchability.
Fil: Giese, Adriana Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Patagónico para el Estudio de los Ecosistemas Continentales; Argentina.
Fil: García Asorey, Martín Ignacio. Universidad Tecnológica Nacional. Facultad Regional Chubut. Grupo de investigación y Desarrollo Tecnológico en Acuicultura y Pesca; Argentina.
Fil: Casalinuovo, Miguel Ángel. Dirección de Manejo de Recursos Ícticos Continentales; Argentina.
Fil: Amaya Santi, María Marcela. Universidad Nacional de la Patagonia Austral. Unidad Académica Río Gallegos; Argentina.
Fil: Kennedy, Brian Patrick. University of Idaho. College of Natural Resources. Department of Fish and Wildlife Sciences; USA.
Fil: Pascual, Miguel Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Patagónico para el Estudio de los Ecosistemas Continentales; Argentina.
Peer Reviewed
Fuente
Journal of Fish Biology 101(4), 925-936. (2022)
Materia
Anadromy
GAM
Migration timing
Patagonia
Salmo trutta
Spring-neap tidal cycle
Nivel de accesibilidad
acceso abierto
Condiciones de uso
2023-07-14T17:06:24Z
Repositorio
Repositorio Institucional Abierto (UTN)
Institución
Universidad Tecnológica Nacional
OAI Identificador
oai:ria.utn.edu.ar:20.500.12272/8270
Acceder
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network_acronym_str RIAUTN
repository_id_str a
network_name_str Repositorio Institucional Abierto (UTN)
spelling Surfing the tide: homeward migration of sea trout (Salmo trutta) in a Patagonian riverGiese, Adriana CarolinaGarcía Asorey, Martín IgnacioCasalinuovo, Miguel ÁngelAmaya Santi, María MarcelaKennedy, Brian PatrickPascual, Miguel AlbertoAnadromyGAMMigration timingPatagoniaSalmo truttaSpring-neap tidal cycleThis study evaluates the influence of marine and freshwater conditions on the timing of river entry and upstream migration of sea trout (Salmo trutta) in the Grande River of Tierra del Fuego, Patagonia. We analysed the in-river catch-and-release records from a group of fishing lodges that dominate the Grande River fishery during January–April 2008 (n = 5029 fish) as a function of environmental variables: tidal amplitude, stage in the lunar cycle, river discharge, and river water temperature along the homeward migration season. We discuss the value of the daily catch rate as an abundance index in the Grande river, then analyse the temporal structure of the tidal cycle in the Grande River estuary, a macro-tidal environment with a mean tidal amplitude of 5.7 m, and analyse the fit of a generalized additive model to trout catches on a daily basis in four sections along the river to identify the environmental variables that may affect trout abundance throughout the homeward migration. Fish catches in each section of the river were differentially affected by specific environmental variables: tidal amplitude had a positive and significant effect on catches in the lower river sections, whereas water temperature and river discharge significantly affected catches in upper sections (positive effect of temperature; negative effect of discharge). Catches in the lower section clearly reflect the river entry stage of the homeward migration, with a bi-modal shape significantly correlated with the tidal cycle. The first peak was composed mainly of larger multi-sea-winter trout that move upstream, whereas the second one had a wider range of fish lengths, including a large proportion of small and maybe nonreproductive trout that overwinter in the lower river. Based on our results, we conclude that the large tides in the Grande River estuary strongly affect the river entry timing of sea trout. The underlying mechanisms of this effect may be a combination of increased olfactory recognition and increased tidal transport modulated by the seasonal tidal cycle, which operates on trout during coastal migration to produce the pulses observed in the Grande River sea trout run. In the middle and upper sections of the river, where the tidal effect at river entry was dissipated as upstream migration progressed, trout catches increased with water temperature and decreased with river discharge, which may operate through their influence on in-river migration rate and abundance, but also through changes in catchability.Fil: Giese, Adriana Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Patagónico para el Estudio de los Ecosistemas Continentales; Argentina.Fil: García Asorey, Martín Ignacio. Universidad Tecnológica Nacional. Facultad Regional Chubut. Grupo de investigación y Desarrollo Tecnológico en Acuicultura y Pesca; Argentina.Fil: Casalinuovo, Miguel Ángel. Dirección de Manejo de Recursos Ícticos Continentales; Argentina.Fil: Amaya Santi, María Marcela. Universidad Nacional de la Patagonia Austral. Unidad Académica Río Gallegos; Argentina.Fil: Kennedy, Brian Patrick. University of Idaho. College of Natural Resources. Department of Fish and Wildlife Sciences; USA.Fil: Pascual, Miguel Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Patagónico para el Estudio de los Ecosistemas Continentales; Argentina.Peer ReviewedThe Fisheries Society of the British Isles2023-07-14T17:06:24Z2023-07-14T17:06:24Z2022-06-23info:eu-repo/semantics/articleinfo:eu-repo/semantics/submittedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloplainapplication/pdfhttp://hdl.handle.net/20.500.12272/8270https://doi.org/10.1111/jfb.15151Journal of Fish Biology 101(4), 925-936. (2022)reponame:Repositorio Institucional Abierto (UTN)instname:Universidad Tecnológica Nacionalengenginfo:eu-repo/semantics/openAccess2023-07-14T17:06:24Zhttp://creativecommons.org/licenses/by-nc-nd/4.0/Attribution-NonCommercial-NoDerivatives 4.0 Internacional2026-09-24T12:48:23Zoai:ria.utn.edu.ar:20.500.12272/8270instacron:UTNInstitucionalhttp://ria.utn.edu.ar/Universidad públicaNo correspondehttp://ria.utn.edu.ar/oaigestionria@rec.utn.edu.ar; fsuarez@rec.utn.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:a2026-09-24 12:48:24.713Repositorio Institucional Abierto (UTN) - Universidad Tecnológica Nacionalfalse
dc.title.none.fl_str_mv Surfing the tide: homeward migration of sea trout (Salmo trutta) in a Patagonian river
title Surfing the tide: homeward migration of sea trout (Salmo trutta) in a Patagonian river
spellingShingle Surfing the tide: homeward migration of sea trout (Salmo trutta) in a Patagonian river
Giese, Adriana Carolina
Anadromy
GAM
Migration timing
Patagonia
Salmo trutta
Spring-neap tidal cycle
title_short Surfing the tide: homeward migration of sea trout (Salmo trutta) in a Patagonian river
title_full Surfing the tide: homeward migration of sea trout (Salmo trutta) in a Patagonian river
title_fullStr Surfing the tide: homeward migration of sea trout (Salmo trutta) in a Patagonian river
title_full_unstemmed Surfing the tide: homeward migration of sea trout (Salmo trutta) in a Patagonian river
title_sort Surfing the tide: homeward migration of sea trout (Salmo trutta) in a Patagonian river
dc.creator.none.fl_str_mv Giese, Adriana Carolina
García Asorey, Martín Ignacio
Casalinuovo, Miguel Ángel
Amaya Santi, María Marcela
Kennedy, Brian Patrick
Pascual, Miguel Alberto
author Giese, Adriana Carolina
author_facet Giese, Adriana Carolina
García Asorey, Martín Ignacio
Casalinuovo, Miguel Ángel
Amaya Santi, María Marcela
Kennedy, Brian Patrick
Pascual, Miguel Alberto
author_role author
author2 García Asorey, Martín Ignacio
Casalinuovo, Miguel Ángel
Amaya Santi, María Marcela
Kennedy, Brian Patrick
Pascual, Miguel Alberto
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Anadromy
GAM
Migration timing
Patagonia
Salmo trutta
Spring-neap tidal cycle
topic Anadromy
GAM
Migration timing
Patagonia
Salmo trutta
Spring-neap tidal cycle
dc.description.none.fl_txt_mv This study evaluates the influence of marine and freshwater conditions on the timing of river entry and upstream migration of sea trout (Salmo trutta) in the Grande River of Tierra del Fuego, Patagonia. We analysed the in-river catch-and-release records from a group of fishing lodges that dominate the Grande River fishery during January–April 2008 (n = 5029 fish) as a function of environmental variables: tidal amplitude, stage in the lunar cycle, river discharge, and river water temperature along the homeward migration season. We discuss the value of the daily catch rate as an abundance index in the Grande river, then analyse the temporal structure of the tidal cycle in the Grande River estuary, a macro-tidal environment with a mean tidal amplitude of 5.7 m, and analyse the fit of a generalized additive model to trout catches on a daily basis in four sections along the river to identify the environmental variables that may affect trout abundance throughout the homeward migration. Fish catches in each section of the river were differentially affected by specific environmental variables: tidal amplitude had a positive and significant effect on catches in the lower river sections, whereas water temperature and river discharge significantly affected catches in upper sections (positive effect of temperature; negative effect of discharge). Catches in the lower section clearly reflect the river entry stage of the homeward migration, with a bi-modal shape significantly correlated with the tidal cycle. The first peak was composed mainly of larger multi-sea-winter trout that move upstream, whereas the second one had a wider range of fish lengths, including a large proportion of small and maybe nonreproductive trout that overwinter in the lower river. Based on our results, we conclude that the large tides in the Grande River estuary strongly affect the river entry timing of sea trout. The underlying mechanisms of this effect may be a combination of increased olfactory recognition and increased tidal transport modulated by the seasonal tidal cycle, which operates on trout during coastal migration to produce the pulses observed in the Grande River sea trout run. In the middle and upper sections of the river, where the tidal effect at river entry was dissipated as upstream migration progressed, trout catches increased with water temperature and decreased with river discharge, which may operate through their influence on in-river migration rate and abundance, but also through changes in catchability.
Fil: Giese, Adriana Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Patagónico para el Estudio de los Ecosistemas Continentales; Argentina.
Fil: García Asorey, Martín Ignacio. Universidad Tecnológica Nacional. Facultad Regional Chubut. Grupo de investigación y Desarrollo Tecnológico en Acuicultura y Pesca; Argentina.
Fil: Casalinuovo, Miguel Ángel. Dirección de Manejo de Recursos Ícticos Continentales; Argentina.
Fil: Amaya Santi, María Marcela. Universidad Nacional de la Patagonia Austral. Unidad Académica Río Gallegos; Argentina.
Fil: Kennedy, Brian Patrick. University of Idaho. College of Natural Resources. Department of Fish and Wildlife Sciences; USA.
Fil: Pascual, Miguel Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Patagónico para el Estudio de los Ecosistemas Continentales; Argentina.
Peer Reviewed
description This study evaluates the influence of marine and freshwater conditions on the timing of river entry and upstream migration of sea trout (Salmo trutta) in the Grande River of Tierra del Fuego, Patagonia. We analysed the in-river catch-and-release records from a group of fishing lodges that dominate the Grande River fishery during January–April 2008 (n = 5029 fish) as a function of environmental variables: tidal amplitude, stage in the lunar cycle, river discharge, and river water temperature along the homeward migration season. We discuss the value of the daily catch rate as an abundance index in the Grande river, then analyse the temporal structure of the tidal cycle in the Grande River estuary, a macro-tidal environment with a mean tidal amplitude of 5.7 m, and analyse the fit of a generalized additive model to trout catches on a daily basis in four sections along the river to identify the environmental variables that may affect trout abundance throughout the homeward migration. Fish catches in each section of the river were differentially affected by specific environmental variables: tidal amplitude had a positive and significant effect on catches in the lower river sections, whereas water temperature and river discharge significantly affected catches in upper sections (positive effect of temperature; negative effect of discharge). Catches in the lower section clearly reflect the river entry stage of the homeward migration, with a bi-modal shape significantly correlated with the tidal cycle. The first peak was composed mainly of larger multi-sea-winter trout that move upstream, whereas the second one had a wider range of fish lengths, including a large proportion of small and maybe nonreproductive trout that overwinter in the lower river. Based on our results, we conclude that the large tides in the Grande River estuary strongly affect the river entry timing of sea trout. The underlying mechanisms of this effect may be a combination of increased olfactory recognition and increased tidal transport modulated by the seasonal tidal cycle, which operates on trout during coastal migration to produce the pulses observed in the Grande River sea trout run. In the middle and upper sections of the river, where the tidal effect at river entry was dissipated as upstream migration progressed, trout catches increased with water temperature and decreased with river discharge, which may operate through their influence on in-river migration rate and abundance, but also through changes in catchability.
publishDate 2022
dc.date.none.fl_str_mv 2022-06-23
2023-07-14T17:06:24Z
2023-07-14T17:06:24Z
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/submittedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str submittedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.12272/8270
https://doi.org/10.1111/jfb.15151
url http://hdl.handle.net/20.500.12272/8270
https://doi.org/10.1111/jfb.15151
dc.language.none.fl_str_mv eng
eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
2023-07-14T17:06:24Z
http://creativecommons.org/licenses/by-nc-nd/4.0/
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
eu_rights_str_mv openAccess
rights_invalid_str_mv 2023-07-14T17:06:24Z
http://creativecommons.org/licenses/by-nc-nd/4.0/
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
dc.format.none.fl_str_mv plain
application/pdf
dc.publisher.none.fl_str_mv The Fisheries Society of the British Isles
publisher.none.fl_str_mv The Fisheries Society of the British Isles
dc.source.none.fl_str_mv Journal of Fish Biology 101(4), 925-936. (2022)
reponame:Repositorio Institucional Abierto (UTN)
instname:Universidad Tecnológica Nacional
reponame_str Repositorio Institucional Abierto (UTN)
collection Repositorio Institucional Abierto (UTN)
instname_str Universidad Tecnológica Nacional
repository.name.fl_str_mv Repositorio Institucional Abierto (UTN) - Universidad Tecnológica Nacional
repository.mail.fl_str_mv gestionria@rec.utn.edu.ar; fsuarez@rec.utn.edu.ar
_version_ 1877230963767902208
score 13.265058

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