Predicting how environmental conditions and smolt body length when entering the marine environment impact individual Atlantic salmon Salmo salar adult return rates
International audience Populations of Atlantic salmon Salmo salar have experienced precipitous declines in abundance since the 1970s. This decline has been associated with reduced numbers of adult salmon returning to fresh water from their marine migration, i.e., their marine return rates (MRR). Thu...
Published in: | Journal of Fish Biology |
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Online Access: | https://hal.inrae.fr/hal-03760745 https://doi.org/10.1111/jfb.14946 |
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ftagrocampouest:oai:HAL:hal-03760745v1 2024-05-19T07:37:42+00:00 Predicting how environmental conditions and smolt body length when entering the marine environment impact individual Atlantic salmon Salmo salar adult return rates Simmons, Olivia Meredith Britton, J. Robert Gillingham, Phillipa Nevoux, Marie Riley, William Rivot, Etienne Gregory, Stephen Bournemouth University Poole (BU) The Game and Wildlife Conservation Trust Dynamique et durabilité des écosystèmes : de la source à l’océan (DECOD) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut Agro Rennes Angers Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro) Pôle OFB-INRAE-Institut Agro-UPPA pour la gestion des migrateurs amphihalins dans leur environnement (MIAME) Université de Pau et des Pays de l'Adour (UPPA)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Office français de la biodiversité (OFB)-Institut Agro Rennes Angers Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro) Centre for Environment, Fisheries and Aquaculture Science Lowestoft (CEFAS) 2022-08 https://hal.inrae.fr/hal-03760745 https://doi.org/10.1111/jfb.14946 en eng HAL CCSD Wiley info:eu-repo/semantics/altIdentifier/doi/10.1111/jfb.14946 hal-03760745 https://hal.inrae.fr/hal-03760745 doi:10.1111/jfb.14946 WOS: 000723011700001 ISSN: 0022-1112 EISSN: 1095-8649 Journal of Fish Biology https://hal.inrae.fr/hal-03760745 Journal of Fish Biology, 2022, 101 (2), pp.378-388. ⟨10.1111/jfb.14946⟩ anadromous salmonid body size sea bass state-space model survival temperature [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2022 ftagrocampouest https://doi.org/10.1111/jfb.14946 2024-05-01T23:51:04Z International audience Populations of Atlantic salmon Salmo salar have experienced precipitous declines in abundance since the 1970s. This decline has been associated with reduced numbers of adult salmon returning to fresh water from their marine migration, i.e., their marine return rates (MRR). Thus, understanding the factors that affect MRR is of crucial conservation importance. The authors used a state-space model with a 13-year time series of individually tagged salmon mark-recapture histories on the River Frome, southern England, to test the effect of smolt body length on their MRR. In addition to smolt length, the model tested for the influence of environmental covariates that were representative of the conditions experienced by the smolts in the early stages of their seaward migration, i.e., from the lower river to the estuary exit. The model indicated that, even when accounting for environmental covariates, smolt body length was an important predictor of MRR. Although larger smolts have a higher probability of returning to their natal river as adults than smaller smolts, and one-sea-winter salmon have a survival rate twice as high as multi-sea-winter salmon, the actual biological mechanisms underpinning this phenomenon remain uncertain. These results have important applications for salmon conservation, as efforts to bolster salmon populations in the freshwater environment should consider methods to improve smolt quality (i.e., body size) as well as smolt quantity. Article in Journal/Newspaper Atlantic salmon Salmo salar Agrocampus Ouest: HAL Journal of Fish Biology 101 2 378 388 |
institution |
Open Polar |
collection |
Agrocampus Ouest: HAL |
op_collection_id |
ftagrocampouest |
language |
English |
topic |
anadromous salmonid body size sea bass state-space model survival temperature [SDE]Environmental Sciences |
spellingShingle |
anadromous salmonid body size sea bass state-space model survival temperature [SDE]Environmental Sciences Simmons, Olivia Meredith Britton, J. Robert Gillingham, Phillipa Nevoux, Marie Riley, William Rivot, Etienne Gregory, Stephen Predicting how environmental conditions and smolt body length when entering the marine environment impact individual Atlantic salmon Salmo salar adult return rates |
topic_facet |
anadromous salmonid body size sea bass state-space model survival temperature [SDE]Environmental Sciences |
description |
International audience Populations of Atlantic salmon Salmo salar have experienced precipitous declines in abundance since the 1970s. This decline has been associated with reduced numbers of adult salmon returning to fresh water from their marine migration, i.e., their marine return rates (MRR). Thus, understanding the factors that affect MRR is of crucial conservation importance. The authors used a state-space model with a 13-year time series of individually tagged salmon mark-recapture histories on the River Frome, southern England, to test the effect of smolt body length on their MRR. In addition to smolt length, the model tested for the influence of environmental covariates that were representative of the conditions experienced by the smolts in the early stages of their seaward migration, i.e., from the lower river to the estuary exit. The model indicated that, even when accounting for environmental covariates, smolt body length was an important predictor of MRR. Although larger smolts have a higher probability of returning to their natal river as adults than smaller smolts, and one-sea-winter salmon have a survival rate twice as high as multi-sea-winter salmon, the actual biological mechanisms underpinning this phenomenon remain uncertain. These results have important applications for salmon conservation, as efforts to bolster salmon populations in the freshwater environment should consider methods to improve smolt quality (i.e., body size) as well as smolt quantity. |
author2 |
Bournemouth University Poole (BU) The Game and Wildlife Conservation Trust Dynamique et durabilité des écosystèmes : de la source à l’océan (DECOD) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut Agro Rennes Angers Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro) Pôle OFB-INRAE-Institut Agro-UPPA pour la gestion des migrateurs amphihalins dans leur environnement (MIAME) Université de Pau et des Pays de l'Adour (UPPA)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Office français de la biodiversité (OFB)-Institut Agro Rennes Angers Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro) Centre for Environment, Fisheries and Aquaculture Science Lowestoft (CEFAS) |
format |
Article in Journal/Newspaper |
author |
Simmons, Olivia Meredith Britton, J. Robert Gillingham, Phillipa Nevoux, Marie Riley, William Rivot, Etienne Gregory, Stephen |
author_facet |
Simmons, Olivia Meredith Britton, J. Robert Gillingham, Phillipa Nevoux, Marie Riley, William Rivot, Etienne Gregory, Stephen |
author_sort |
Simmons, Olivia Meredith |
title |
Predicting how environmental conditions and smolt body length when entering the marine environment impact individual Atlantic salmon Salmo salar adult return rates |
title_short |
Predicting how environmental conditions and smolt body length when entering the marine environment impact individual Atlantic salmon Salmo salar adult return rates |
title_full |
Predicting how environmental conditions and smolt body length when entering the marine environment impact individual Atlantic salmon Salmo salar adult return rates |
title_fullStr |
Predicting how environmental conditions and smolt body length when entering the marine environment impact individual Atlantic salmon Salmo salar adult return rates |
title_full_unstemmed |
Predicting how environmental conditions and smolt body length when entering the marine environment impact individual Atlantic salmon Salmo salar adult return rates |
title_sort |
predicting how environmental conditions and smolt body length when entering the marine environment impact individual atlantic salmon salmo salar adult return rates |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.inrae.fr/hal-03760745 https://doi.org/10.1111/jfb.14946 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
ISSN: 0022-1112 EISSN: 1095-8649 Journal of Fish Biology https://hal.inrae.fr/hal-03760745 Journal of Fish Biology, 2022, 101 (2), pp.378-388. ⟨10.1111/jfb.14946⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/jfb.14946 hal-03760745 https://hal.inrae.fr/hal-03760745 doi:10.1111/jfb.14946 WOS: 000723011700001 |
op_doi |
https://doi.org/10.1111/jfb.14946 |
container_title |
Journal of Fish Biology |
container_volume |
101 |
container_issue |
2 |
container_start_page |
378 |
op_container_end_page |
388 |
_version_ |
1799477039752806400 |