Feeding Response of Atlantic Salmon ( Salmo salar ) Alevins in Flowing and Still Water
Atlantic salmon (Salmo salar) alevins presented with lake zooplankton in still water readily consumed prey items, but only if the prey were nearby and moving. Feeding was initiated from the bottom or from midwater, but no search or pursuit behavior was noted. Stomach analyses of alevins exposed to l...
Published in: | Journal of the Fisheries Research Board of Canada |
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Canadian Science Publishing
1978
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Online Access: | http://dx.doi.org/10.1139/f78-057 http://www.nrcresearchpress.com/doi/pdf/10.1139/f78-057 |
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crcansciencepubl:10.1139/f78-057 2023-12-17T10:27:11+01:00 Feeding Response of Atlantic Salmon ( Salmo salar ) Alevins in Flowing and Still Water Rimmer, D. M. Power, G. 1978 http://dx.doi.org/10.1139/f78-057 http://www.nrcresearchpress.com/doi/pdf/10.1139/f78-057 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Journal of the Fisheries Research Board of Canada volume 35, issue 3, page 329-332 ISSN 0015-296X General Medicine journal-article 1978 crcansciencepubl https://doi.org/10.1139/f78-057 2023-11-19T13:39:34Z Atlantic salmon (Salmo salar) alevins presented with lake zooplankton in still water readily consumed prey items, but only if the prey were nearby and moving. Feeding was initiated from the bottom or from midwater, but no search or pursuit behavior was noted. Stomach analyses of alevins exposed to lake zooplankton assemblages for 3 h in still and flowing (7.2 cm∙s −1 ) water revealed that the two groups consumed similar diets, but that the still-water group had a greater total food consumption. We conclude that for alevins to feed successfully, food need not be carried in a water current, but that motion of the prey is necessary. This motion can be provided by water current or by the prey. The role of prey motility in the feeding of young salmonids is briefly discussed. Key words: Atlantic salmon, alevins, feeding, water current Article in Journal/Newspaper Atlantic salmon Salmo salar Canadian Science Publishing (via Crossref) Journal of the Fisheries Research Board of Canada 35 3 329 332 |
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Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Medicine |
spellingShingle |
General Medicine Rimmer, D. M. Power, G. Feeding Response of Atlantic Salmon ( Salmo salar ) Alevins in Flowing and Still Water |
topic_facet |
General Medicine |
description |
Atlantic salmon (Salmo salar) alevins presented with lake zooplankton in still water readily consumed prey items, but only if the prey were nearby and moving. Feeding was initiated from the bottom or from midwater, but no search or pursuit behavior was noted. Stomach analyses of alevins exposed to lake zooplankton assemblages for 3 h in still and flowing (7.2 cm∙s −1 ) water revealed that the two groups consumed similar diets, but that the still-water group had a greater total food consumption. We conclude that for alevins to feed successfully, food need not be carried in a water current, but that motion of the prey is necessary. This motion can be provided by water current or by the prey. The role of prey motility in the feeding of young salmonids is briefly discussed. Key words: Atlantic salmon, alevins, feeding, water current |
format |
Article in Journal/Newspaper |
author |
Rimmer, D. M. Power, G. |
author_facet |
Rimmer, D. M. Power, G. |
author_sort |
Rimmer, D. M. |
title |
Feeding Response of Atlantic Salmon ( Salmo salar ) Alevins in Flowing and Still Water |
title_short |
Feeding Response of Atlantic Salmon ( Salmo salar ) Alevins in Flowing and Still Water |
title_full |
Feeding Response of Atlantic Salmon ( Salmo salar ) Alevins in Flowing and Still Water |
title_fullStr |
Feeding Response of Atlantic Salmon ( Salmo salar ) Alevins in Flowing and Still Water |
title_full_unstemmed |
Feeding Response of Atlantic Salmon ( Salmo salar ) Alevins in Flowing and Still Water |
title_sort |
feeding response of atlantic salmon ( salmo salar ) alevins in flowing and still water |
publisher |
Canadian Science Publishing |
publishDate |
1978 |
url |
http://dx.doi.org/10.1139/f78-057 http://www.nrcresearchpress.com/doi/pdf/10.1139/f78-057 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Journal of the Fisheries Research Board of Canada volume 35, issue 3, page 329-332 ISSN 0015-296X |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f78-057 |
container_title |
Journal of the Fisheries Research Board of Canada |
container_volume |
35 |
container_issue |
3 |
container_start_page |
329 |
op_container_end_page |
332 |
_version_ |
1785578976870137856 |