Comparison of population dynamics of atlantic salmon (Salmo salar) and brown trout (Salmo trutta) in a small tributary of the River Scorff (Brittany, France)
International audience The population dynamics of Atlantic salmon (Salmo salar L.) and brown trout (Salmo trutta L.) were compared in a small tributary of the River Scorff (Brittany, France) from spawning time to the beginning of the third growing season. The spawning and fry emergence of the two sp...
Published in: | Ecology of Freshwater Fish |
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Format: | Article in Journal/Newspaper |
Language: | English |
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1994
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Online Access: | https://hal.inrae.fr/hal-02708658 https://hal.inrae.fr/hal-02708658/document https://hal.inrae.fr/hal-02708658/file/Bagl1994EFF_1.pdf https://doi.org/10.1111/j.1600-0633.1994.tb00104.x |
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ftinstagro:oai:HAL:hal-02708658v1 2024-06-23T07:51:15+00:00 Comparison of population dynamics of atlantic salmon (Salmo salar) and brown trout (Salmo trutta) in a small tributary of the River Scorff (Brittany, France) Baglinière, Jean-Luc Prévost, Etienne Maisse, Gérard Ecobiologie et qualité des hydrosystèmes continentaux (EQHC) Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Supérieure Agronomique de Rennes Station de physiologie des poissons Institut National de la Recherche Agronomique (INRA) 1994 https://hal.inrae.fr/hal-02708658 https://hal.inrae.fr/hal-02708658/document https://hal.inrae.fr/hal-02708658/file/Bagl1994EFF_1.pdf https://doi.org/10.1111/j.1600-0633.1994.tb00104.x en eng HAL CCSD Consejo Superior de Investigaciones Científicas info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1600-0633.1994.tb00104.x hal-02708658 https://hal.inrae.fr/hal-02708658 https://hal.inrae.fr/hal-02708658/document https://hal.inrae.fr/hal-02708658/file/Bagl1994EFF_1.pdf doi:10.1111/j.1600-0633.1994.tb00104.x PRODINRA: 110803 info:eu-repo/semantics/OpenAccess ISSN: 0906-6691 EISSN: 1600-0633 Ecology of Freshwater Fish https://hal.inrae.fr/hal-02708658 Ecology of Freshwater Fish, 1994, 3, pp.25-34. ⟨10.1111/j.1600-0633.1994.tb00104.x⟩ fish atlantic salmon brown trout tributary brittany france population dynamics [SDV]Life Sciences [q-bio] info:eu-repo/semantics/article Journal articles 1994 ftinstagro https://doi.org/10.1111/j.1600-0633.1994.tb00104.x 2024-05-29T23:48:21Z International audience The population dynamics of Atlantic salmon (Salmo salar L.) and brown trout (Salmo trutta L.) were compared in a small tributary of the River Scorff (Brittany, France) from spawning time to the beginning of the third growing season. The spawning and fry emergence of the two species took place at approximately the same time. In the first autumn, the densityof 0+ juveniles and settling rate from the egg stage were much higher in trout than in salmon. The emigration rate from 0+ population was much higher in trout than in salmon. The size of resident and migrating fish was always smaller in salmon than in trout, whatever the age. The low level of salmon production in the brook, compared with trout, was the result of low survival from egg to 0+ stage in autumn, combined with the small proportion of juveniles migrating after the first growing season. This was not compensated by a high number of migrants the next year. The role of physical habitat, inter-and intraspecific competition, predation and migration dependence on size and early sexual maturity is discussed. Indications are that small tributaries of the type studied are of great value for recruitment in trout but not very productive for juvenile salmon. Article in Journal/Newspaper Atlantic salmon Salmo salar Portail HAL Institut Agro Ecology of Freshwater Fish 3 1 25 34 |
institution |
Open Polar |
collection |
Portail HAL Institut Agro |
op_collection_id |
ftinstagro |
language |
English |
topic |
fish atlantic salmon brown trout tributary brittany france population dynamics [SDV]Life Sciences [q-bio] |
spellingShingle |
fish atlantic salmon brown trout tributary brittany france population dynamics [SDV]Life Sciences [q-bio] Baglinière, Jean-Luc Prévost, Etienne Maisse, Gérard Comparison of population dynamics of atlantic salmon (Salmo salar) and brown trout (Salmo trutta) in a small tributary of the River Scorff (Brittany, France) |
topic_facet |
fish atlantic salmon brown trout tributary brittany france population dynamics [SDV]Life Sciences [q-bio] |
description |
International audience The population dynamics of Atlantic salmon (Salmo salar L.) and brown trout (Salmo trutta L.) were compared in a small tributary of the River Scorff (Brittany, France) from spawning time to the beginning of the third growing season. The spawning and fry emergence of the two species took place at approximately the same time. In the first autumn, the densityof 0+ juveniles and settling rate from the egg stage were much higher in trout than in salmon. The emigration rate from 0+ population was much higher in trout than in salmon. The size of resident and migrating fish was always smaller in salmon than in trout, whatever the age. The low level of salmon production in the brook, compared with trout, was the result of low survival from egg to 0+ stage in autumn, combined with the small proportion of juveniles migrating after the first growing season. This was not compensated by a high number of migrants the next year. The role of physical habitat, inter-and intraspecific competition, predation and migration dependence on size and early sexual maturity is discussed. Indications are that small tributaries of the type studied are of great value for recruitment in trout but not very productive for juvenile salmon. |
author2 |
Ecobiologie et qualité des hydrosystèmes continentaux (EQHC) Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Supérieure Agronomique de Rennes Station de physiologie des poissons Institut National de la Recherche Agronomique (INRA) |
format |
Article in Journal/Newspaper |
author |
Baglinière, Jean-Luc Prévost, Etienne Maisse, Gérard |
author_facet |
Baglinière, Jean-Luc Prévost, Etienne Maisse, Gérard |
author_sort |
Baglinière, Jean-Luc |
title |
Comparison of population dynamics of atlantic salmon (Salmo salar) and brown trout (Salmo trutta) in a small tributary of the River Scorff (Brittany, France) |
title_short |
Comparison of population dynamics of atlantic salmon (Salmo salar) and brown trout (Salmo trutta) in a small tributary of the River Scorff (Brittany, France) |
title_full |
Comparison of population dynamics of atlantic salmon (Salmo salar) and brown trout (Salmo trutta) in a small tributary of the River Scorff (Brittany, France) |
title_fullStr |
Comparison of population dynamics of atlantic salmon (Salmo salar) and brown trout (Salmo trutta) in a small tributary of the River Scorff (Brittany, France) |
title_full_unstemmed |
Comparison of population dynamics of atlantic salmon (Salmo salar) and brown trout (Salmo trutta) in a small tributary of the River Scorff (Brittany, France) |
title_sort |
comparison of population dynamics of atlantic salmon (salmo salar) and brown trout (salmo trutta) in a small tributary of the river scorff (brittany, france) |
publisher |
HAL CCSD |
publishDate |
1994 |
url |
https://hal.inrae.fr/hal-02708658 https://hal.inrae.fr/hal-02708658/document https://hal.inrae.fr/hal-02708658/file/Bagl1994EFF_1.pdf https://doi.org/10.1111/j.1600-0633.1994.tb00104.x |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
ISSN: 0906-6691 EISSN: 1600-0633 Ecology of Freshwater Fish https://hal.inrae.fr/hal-02708658 Ecology of Freshwater Fish, 1994, 3, pp.25-34. ⟨10.1111/j.1600-0633.1994.tb00104.x⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1600-0633.1994.tb00104.x hal-02708658 https://hal.inrae.fr/hal-02708658 https://hal.inrae.fr/hal-02708658/document https://hal.inrae.fr/hal-02708658/file/Bagl1994EFF_1.pdf doi:10.1111/j.1600-0633.1994.tb00104.x PRODINRA: 110803 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1111/j.1600-0633.1994.tb00104.x |
container_title |
Ecology of Freshwater Fish |
container_volume |
3 |
container_issue |
1 |
container_start_page |
25 |
op_container_end_page |
34 |
_version_ |
1802642285900333056 |