Downstream Movements and Estuarine Residence by Atlantic Salmon Parr ( Salmo salar )
Downstream migrations and estuarine residence by Atlantic salmon (Salmo salar) parr and smolts were studied in a small river on the northwest coast of Newfoundland in 1983 and in 1987. There were large downstream migrations in the spring and small downstream migrations in the fall. The major differe...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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1989
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Online Access: | http://dx.doi.org/10.1139/f89-187 http://www.nrcresearchpress.com/doi/pdf/10.1139/f89-187 |
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crcansciencepubl:10.1139/f89-187 2023-12-17T10:27:14+01:00 Downstream Movements and Estuarine Residence by Atlantic Salmon Parr ( Salmo salar ) Cunjak, R. A. Chadwick, E. M. P. Shears, M. 1989 http://dx.doi.org/10.1139/f89-187 http://www.nrcresearchpress.com/doi/pdf/10.1139/f89-187 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 46, issue 9, page 1466-1471 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 1989 crcansciencepubl https://doi.org/10.1139/f89-187 2023-11-19T13:39:16Z Downstream migrations and estuarine residence by Atlantic salmon (Salmo salar) parr and smolts were studied in a small river on the northwest coast of Newfoundland in 1983 and in 1987. There were large downstream migrations in the spring and small downstream migrations in the fall. The major differences between the two types of migrant were that parr migrated about 1 wk before smolts and at a younger age compared with smolts and while parr remained in the estuary throughout the summer, smoits did not. Modal age and mean size were less for parr sampled in the estuary compared with those sampled at the counting-fence which suggested that the smallest parr were not captured by the fence. The estuarine population of parr represented a significant proportion of the river's total production of salmon. Parr were found throughout the estuary in salinities up to 24 parts per thousand but were most abundant near the river mouth. There was evidence that larger parr became smolts and eventually migrated to sea, but smaller parr probably returned to the river for overwintering. It is clear that estuaries should be included as habitat used for rearing Atlantic salmon. Article in Journal/Newspaper Atlantic salmon Newfoundland Salmo salar Canadian Science Publishing (via Crossref) Canadian Journal of Fisheries and Aquatic Sciences 46 9 1466 1471 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Cunjak, R. A. Chadwick, E. M. P. Shears, M. Downstream Movements and Estuarine Residence by Atlantic Salmon Parr ( Salmo salar ) |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Downstream migrations and estuarine residence by Atlantic salmon (Salmo salar) parr and smolts were studied in a small river on the northwest coast of Newfoundland in 1983 and in 1987. There were large downstream migrations in the spring and small downstream migrations in the fall. The major differences between the two types of migrant were that parr migrated about 1 wk before smolts and at a younger age compared with smolts and while parr remained in the estuary throughout the summer, smoits did not. Modal age and mean size were less for parr sampled in the estuary compared with those sampled at the counting-fence which suggested that the smallest parr were not captured by the fence. The estuarine population of parr represented a significant proportion of the river's total production of salmon. Parr were found throughout the estuary in salinities up to 24 parts per thousand but were most abundant near the river mouth. There was evidence that larger parr became smolts and eventually migrated to sea, but smaller parr probably returned to the river for overwintering. It is clear that estuaries should be included as habitat used for rearing Atlantic salmon. |
format |
Article in Journal/Newspaper |
author |
Cunjak, R. A. Chadwick, E. M. P. Shears, M. |
author_facet |
Cunjak, R. A. Chadwick, E. M. P. Shears, M. |
author_sort |
Cunjak, R. A. |
title |
Downstream Movements and Estuarine Residence by Atlantic Salmon Parr ( Salmo salar ) |
title_short |
Downstream Movements and Estuarine Residence by Atlantic Salmon Parr ( Salmo salar ) |
title_full |
Downstream Movements and Estuarine Residence by Atlantic Salmon Parr ( Salmo salar ) |
title_fullStr |
Downstream Movements and Estuarine Residence by Atlantic Salmon Parr ( Salmo salar ) |
title_full_unstemmed |
Downstream Movements and Estuarine Residence by Atlantic Salmon Parr ( Salmo salar ) |
title_sort |
downstream movements and estuarine residence by atlantic salmon parr ( salmo salar ) |
publisher |
Canadian Science Publishing |
publishDate |
1989 |
url |
http://dx.doi.org/10.1139/f89-187 http://www.nrcresearchpress.com/doi/pdf/10.1139/f89-187 |
genre |
Atlantic salmon Newfoundland Salmo salar |
genre_facet |
Atlantic salmon Newfoundland Salmo salar |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 46, issue 9, page 1466-1471 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f89-187 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
46 |
container_issue |
9 |
container_start_page |
1466 |
op_container_end_page |
1471 |
_version_ |
1785579028200030208 |