Individual downstream swimming speed during the natural smolting period among young of Baltic salmon ( Salmo salar )
The individual downstream swimming behaviour of two-summer-old salmon from the Ume River hatchery stock was monitored throughout the natural smolting period in May–June. The experiment was performed in an artificial-stream tank (diameter 11 m) equipped with a passive integrated transponder (PIT) tag...
Published in: | Canadian Journal of Zoology |
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Canadian Science Publishing
1993
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Online Access: | http://dx.doi.org/10.1139/z93-253 http://www.nrcresearchpress.com/doi/pdf/10.1139/z93-253 |
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crcansciencepubl:10.1139/z93-253 2023-12-17T10:49:25+01:00 Individual downstream swimming speed during the natural smolting period among young of Baltic salmon ( Salmo salar ) Fängstam, Hasse 1993 http://dx.doi.org/10.1139/z93-253 http://www.nrcresearchpress.com/doi/pdf/10.1139/z93-253 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 71, issue 9, page 1782-1786 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1993 crcansciencepubl https://doi.org/10.1139/z93-253 2023-11-19T13:38:17Z The individual downstream swimming behaviour of two-summer-old salmon from the Ume River hatchery stock was monitored throughout the natural smolting period in May–June. The experiment was performed in an artificial-stream tank (diameter 11 m) equipped with a passive integrated transponder (PIT) tag monitoring system. The swimming speed of individual fish in relation to water velocity and the porportion of time during which an individual fish showed active versus passive displacement were investigated using a total of 224 sexually immature fish and previously mature males, individually PIT tagged. At peak migration fish swam downstream at an average speed of about double the water velocity, indicating active downstream migration. No differences in downstream swimming speed between migratory and nonmigratory fish were observed. However, migratory and nonmigratory fish used considerably different proportions of the total time swimming faster than the water current, 10% for migratory fish but only 0.1% for nonmigratory fish. Migratory smolts covered about 25% of their total downstream displacement by means of active downstream swimming: 3.3 km out of 13.5 km in 24 h. Thus, the study clearly shows that active downstream swimming is an important part of the migratory repertoire of salmon smolts. Article in Journal/Newspaper Salmo salar Canadian Science Publishing (via Crossref) Canadian Journal of Zoology 71 9 1782 1786 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Fängstam, Hasse Individual downstream swimming speed during the natural smolting period among young of Baltic salmon ( Salmo salar ) |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
The individual downstream swimming behaviour of two-summer-old salmon from the Ume River hatchery stock was monitored throughout the natural smolting period in May–June. The experiment was performed in an artificial-stream tank (diameter 11 m) equipped with a passive integrated transponder (PIT) tag monitoring system. The swimming speed of individual fish in relation to water velocity and the porportion of time during which an individual fish showed active versus passive displacement were investigated using a total of 224 sexually immature fish and previously mature males, individually PIT tagged. At peak migration fish swam downstream at an average speed of about double the water velocity, indicating active downstream migration. No differences in downstream swimming speed between migratory and nonmigratory fish were observed. However, migratory and nonmigratory fish used considerably different proportions of the total time swimming faster than the water current, 10% for migratory fish but only 0.1% for nonmigratory fish. Migratory smolts covered about 25% of their total downstream displacement by means of active downstream swimming: 3.3 km out of 13.5 km in 24 h. Thus, the study clearly shows that active downstream swimming is an important part of the migratory repertoire of salmon smolts. |
format |
Article in Journal/Newspaper |
author |
Fängstam, Hasse |
author_facet |
Fängstam, Hasse |
author_sort |
Fängstam, Hasse |
title |
Individual downstream swimming speed during the natural smolting period among young of Baltic salmon ( Salmo salar ) |
title_short |
Individual downstream swimming speed during the natural smolting period among young of Baltic salmon ( Salmo salar ) |
title_full |
Individual downstream swimming speed during the natural smolting period among young of Baltic salmon ( Salmo salar ) |
title_fullStr |
Individual downstream swimming speed during the natural smolting period among young of Baltic salmon ( Salmo salar ) |
title_full_unstemmed |
Individual downstream swimming speed during the natural smolting period among young of Baltic salmon ( Salmo salar ) |
title_sort |
individual downstream swimming speed during the natural smolting period among young of baltic salmon ( salmo salar ) |
publisher |
Canadian Science Publishing |
publishDate |
1993 |
url |
http://dx.doi.org/10.1139/z93-253 http://www.nrcresearchpress.com/doi/pdf/10.1139/z93-253 |
genre |
Salmo salar |
genre_facet |
Salmo salar |
op_source |
Canadian Journal of Zoology volume 71, issue 9, page 1782-1786 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z93-253 |
container_title |
Canadian Journal of Zoology |
container_volume |
71 |
container_issue |
9 |
container_start_page |
1782 |
op_container_end_page |
1786 |
_version_ |
1785573877112373248 |