COMPARATIVE RESEARCH ON LOCOMOTOR COMPONENTS OF RHEOTACTIC RESPONSE IN JUVENILE ATLANTIC SALMON (SALMO SALAR L.) AND BROWN TROUT (SALMO TRUTTA L.)
We experimentally studied the locomotor components of rheotactic response in three age cohorts (0+, 1+, 2+) of Altantic salmon and brown trout parr from, respectively, the Varzuga River main channel and tributary (Kola Peninsula, White Sea drainage basin). A specially designed hydrodynamic device pe...
Published in: | Proceedings of the Karelian Research Centre of the Russian Academy of Sciences |
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Karelian Research Centre of the Russian Academy of Sciences
2017
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Online Access: | https://doi.org/10.17076/eb679 https://doaj.org/article/c137a2c5ff3b4be88fd278b6006b8f6b |
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ftdoajarticles:oai:doaj.org/article:c137a2c5ff3b4be88fd278b6006b8f6b 2023-05-15T15:31:44+02:00 COMPARATIVE RESEARCH ON LOCOMOTOR COMPONENTS OF RHEOTACTIC RESPONSE IN JUVENILE ATLANTIC SALMON (SALMO SALAR L.) AND BROWN TROUT (SALMO TRUTTA L.) Mikhail Ruch'ev Denis Efremov Mikhail Skorobogatov Alexey Veselov 2017-12-01T00:00:00Z https://doi.org/10.17076/eb679 https://doaj.org/article/c137a2c5ff3b4be88fd278b6006b8f6b EN RU eng rus Karelian Research Centre of the Russian Academy of Sciences http://journals.krc.karelia.ru/index.php/biology/article/view/679 https://doaj.org/toc/1997-3217 https://doaj.org/toc/2312-4504 1997-3217 2312-4504 doi:10.17076/eb679 https://doaj.org/article/c137a2c5ff3b4be88fd278b6006b8f6b Transactions of the Karelian Research Centre of the Russian Academy of Sciences, Iss 12, Pp 72-79 (2017) white sea drainage basin varzuga river atlantic salmon parr brown trout parr locomotor components of rheotactic response – threshold active critical Science Q article 2017 ftdoajarticles https://doi.org/10.17076/eb679 2022-12-31T08:26:04Z We experimentally studied the locomotor components of rheotactic response in three age cohorts (0+, 1+, 2+) of Altantic salmon and brown trout parr from, respectively, the Varzuga River main channel and tributary (Kola Peninsula, White Sea drainage basin). A specially designed hydrodynamic device permitting to regulate the current velocity from 0.05 to 0.9 m/s was used. There was no reliable difference between velocity thresholds for 0+ salmon and brown trout or for 1+ parr of the two species. For 1+ parr, however, the velocity threshold was lower than for 0+ parr in both species. Sensitivity to the current dropped sharply in 2+ parr, especially in brown trout. In brown trout aged 1+ and 2+, the index of active rheotactic response, meaning that locomotion is activated to keep the po sition in the current, is reliably higher than in salmon. The critical rheotactic response index also differed among age cohorts, and brown trout parr excelled, withstanding current velocities of 80–90 m/s for several seconds. Differences in rheotactic response indexes apparently ensue from the hydrological, thermal and trophic conditions of habitats in the main channel and the tributary, which influenced the size and weight of parr in both species. The main channel is mostly inhabited by salmon parr, whereas the tributary is home to brown trout parr, which grow faster owing to the better foraging conditions. Article in Journal/Newspaper Atlantic salmon kola peninsula Salmo salar White Sea Directory of Open Access Journals: DOAJ Articles White Sea Kola Peninsula Varzuga ENVELOPE(36.942,36.942,66.268,66.268) Proceedings of the Karelian Research Centre of the Russian Academy of Sciences 12 72 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
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English Russian |
topic |
white sea drainage basin varzuga river atlantic salmon parr brown trout parr locomotor components of rheotactic response – threshold active critical Science Q |
spellingShingle |
white sea drainage basin varzuga river atlantic salmon parr brown trout parr locomotor components of rheotactic response – threshold active critical Science Q Mikhail Ruch'ev Denis Efremov Mikhail Skorobogatov Alexey Veselov COMPARATIVE RESEARCH ON LOCOMOTOR COMPONENTS OF RHEOTACTIC RESPONSE IN JUVENILE ATLANTIC SALMON (SALMO SALAR L.) AND BROWN TROUT (SALMO TRUTTA L.) |
topic_facet |
white sea drainage basin varzuga river atlantic salmon parr brown trout parr locomotor components of rheotactic response – threshold active critical Science Q |
description |
We experimentally studied the locomotor components of rheotactic response in three age cohorts (0+, 1+, 2+) of Altantic salmon and brown trout parr from, respectively, the Varzuga River main channel and tributary (Kola Peninsula, White Sea drainage basin). A specially designed hydrodynamic device permitting to regulate the current velocity from 0.05 to 0.9 m/s was used. There was no reliable difference between velocity thresholds for 0+ salmon and brown trout or for 1+ parr of the two species. For 1+ parr, however, the velocity threshold was lower than for 0+ parr in both species. Sensitivity to the current dropped sharply in 2+ parr, especially in brown trout. In brown trout aged 1+ and 2+, the index of active rheotactic response, meaning that locomotion is activated to keep the po sition in the current, is reliably higher than in salmon. The critical rheotactic response index also differed among age cohorts, and brown trout parr excelled, withstanding current velocities of 80–90 m/s for several seconds. Differences in rheotactic response indexes apparently ensue from the hydrological, thermal and trophic conditions of habitats in the main channel and the tributary, which influenced the size and weight of parr in both species. The main channel is mostly inhabited by salmon parr, whereas the tributary is home to brown trout parr, which grow faster owing to the better foraging conditions. |
format |
Article in Journal/Newspaper |
author |
Mikhail Ruch'ev Denis Efremov Mikhail Skorobogatov Alexey Veselov |
author_facet |
Mikhail Ruch'ev Denis Efremov Mikhail Skorobogatov Alexey Veselov |
author_sort |
Mikhail Ruch'ev |
title |
COMPARATIVE RESEARCH ON LOCOMOTOR COMPONENTS OF RHEOTACTIC RESPONSE IN JUVENILE ATLANTIC SALMON (SALMO SALAR L.) AND BROWN TROUT (SALMO TRUTTA L.) |
title_short |
COMPARATIVE RESEARCH ON LOCOMOTOR COMPONENTS OF RHEOTACTIC RESPONSE IN JUVENILE ATLANTIC SALMON (SALMO SALAR L.) AND BROWN TROUT (SALMO TRUTTA L.) |
title_full |
COMPARATIVE RESEARCH ON LOCOMOTOR COMPONENTS OF RHEOTACTIC RESPONSE IN JUVENILE ATLANTIC SALMON (SALMO SALAR L.) AND BROWN TROUT (SALMO TRUTTA L.) |
title_fullStr |
COMPARATIVE RESEARCH ON LOCOMOTOR COMPONENTS OF RHEOTACTIC RESPONSE IN JUVENILE ATLANTIC SALMON (SALMO SALAR L.) AND BROWN TROUT (SALMO TRUTTA L.) |
title_full_unstemmed |
COMPARATIVE RESEARCH ON LOCOMOTOR COMPONENTS OF RHEOTACTIC RESPONSE IN JUVENILE ATLANTIC SALMON (SALMO SALAR L.) AND BROWN TROUT (SALMO TRUTTA L.) |
title_sort |
comparative research on locomotor components of rheotactic response in juvenile atlantic salmon (salmo salar l.) and brown trout (salmo trutta l.) |
publisher |
Karelian Research Centre of the Russian Academy of Sciences |
publishDate |
2017 |
url |
https://doi.org/10.17076/eb679 https://doaj.org/article/c137a2c5ff3b4be88fd278b6006b8f6b |
long_lat |
ENVELOPE(36.942,36.942,66.268,66.268) |
geographic |
White Sea Kola Peninsula Varzuga |
geographic_facet |
White Sea Kola Peninsula Varzuga |
genre |
Atlantic salmon kola peninsula Salmo salar White Sea |
genre_facet |
Atlantic salmon kola peninsula Salmo salar White Sea |
op_source |
Transactions of the Karelian Research Centre of the Russian Academy of Sciences, Iss 12, Pp 72-79 (2017) |
op_relation |
http://journals.krc.karelia.ru/index.php/biology/article/view/679 https://doaj.org/toc/1997-3217 https://doaj.org/toc/2312-4504 1997-3217 2312-4504 doi:10.17076/eb679 https://doaj.org/article/c137a2c5ff3b4be88fd278b6006b8f6b |
op_doi |
https://doi.org/10.17076/eb679 |
container_title |
Proceedings of the Karelian Research Centre of the Russian Academy of Sciences |
container_issue |
12 |
container_start_page |
72 |
_version_ |
1766362258967887872 |