Feeding and prey‐selection of wild Atlantic salmon post‐smolts
The diet of post‐smolt Atlantic salmon Salmo salar caught in the Trondheimsfjord and Frohavet in central Norway, based on stomach contents analysis, showed a gradual change during migration from the river to the estuary, fjord and coastal areas. Post‐smolts caught in the estuary had eaten intertidal...
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crwiley:10.1111/j.1095-8649.2001.tb02321.x 2024-06-02T08:03:29+00:00 Feeding and prey‐selection of wild Atlantic salmon post‐smolts Andreassen, P. M. R. Martinussen, M. B. Hvidsten, N. A. Stefansson, S. O. 2001 http://dx.doi.org/10.1111/j.1095-8649.2001.tb02321.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.2001.tb02321.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.2001.tb02321.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 58, issue 6, page 1667-1679 ISSN 0022-1112 1095-8649 journal-article 2001 crwiley https://doi.org/10.1111/j.1095-8649.2001.tb02321.x 2024-05-03T10:55:31Z The diet of post‐smolt Atlantic salmon Salmo salar caught in the Trondheimsfjord and Frohavet in central Norway, based on stomach contents analysis, showed a gradual change during migration from the river to the estuary, fjord and coastal areas. Post‐smolts caught in the estuary had eaten intertidal gammarid amphipods, while post‐smolts caught further seawards preyed upon available marine prey such as Calanus spp., adult euphausiids and fish larvae. The frequency of adult insects was high in all post‐smolt stomachs. The gradual change in diet suggested that feeding conditions in the early marine phase were important for post‐smolt survival and growth. With the exception of the copepods, there was no overall similarity between species composition of the plankton samples and the stomach contents. Although the hypothesis that the post‐smolts are opportunistic feeders cannot be rejected, the composition of the stomach contents suggests a possible selectivity of advantageous prey. Article in Journal/Newspaper Atlantic salmon Salmo salar Copepods Wiley Online Library Frohavet ENVELOPE(9.433,9.433,63.867,63.867) Norway Journal of Fish Biology 58 6 1667 1679 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
The diet of post‐smolt Atlantic salmon Salmo salar caught in the Trondheimsfjord and Frohavet in central Norway, based on stomach contents analysis, showed a gradual change during migration from the river to the estuary, fjord and coastal areas. Post‐smolts caught in the estuary had eaten intertidal gammarid amphipods, while post‐smolts caught further seawards preyed upon available marine prey such as Calanus spp., adult euphausiids and fish larvae. The frequency of adult insects was high in all post‐smolt stomachs. The gradual change in diet suggested that feeding conditions in the early marine phase were important for post‐smolt survival and growth. With the exception of the copepods, there was no overall similarity between species composition of the plankton samples and the stomach contents. Although the hypothesis that the post‐smolts are opportunistic feeders cannot be rejected, the composition of the stomach contents suggests a possible selectivity of advantageous prey. |
format |
Article in Journal/Newspaper |
author |
Andreassen, P. M. R. Martinussen, M. B. Hvidsten, N. A. Stefansson, S. O. |
spellingShingle |
Andreassen, P. M. R. Martinussen, M. B. Hvidsten, N. A. Stefansson, S. O. Feeding and prey‐selection of wild Atlantic salmon post‐smolts |
author_facet |
Andreassen, P. M. R. Martinussen, M. B. Hvidsten, N. A. Stefansson, S. O. |
author_sort |
Andreassen, P. M. R. |
title |
Feeding and prey‐selection of wild Atlantic salmon post‐smolts |
title_short |
Feeding and prey‐selection of wild Atlantic salmon post‐smolts |
title_full |
Feeding and prey‐selection of wild Atlantic salmon post‐smolts |
title_fullStr |
Feeding and prey‐selection of wild Atlantic salmon post‐smolts |
title_full_unstemmed |
Feeding and prey‐selection of wild Atlantic salmon post‐smolts |
title_sort |
feeding and prey‐selection of wild atlantic salmon post‐smolts |
publisher |
Wiley |
publishDate |
2001 |
url |
http://dx.doi.org/10.1111/j.1095-8649.2001.tb02321.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.2001.tb02321.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.2001.tb02321.x |
long_lat |
ENVELOPE(9.433,9.433,63.867,63.867) |
geographic |
Frohavet Norway |
geographic_facet |
Frohavet Norway |
genre |
Atlantic salmon Salmo salar Copepods |
genre_facet |
Atlantic salmon Salmo salar Copepods |
op_source |
Journal of Fish Biology volume 58, issue 6, page 1667-1679 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1095-8649.2001.tb02321.x |
container_title |
Journal of Fish Biology |
container_volume |
58 |
container_issue |
6 |
container_start_page |
1667 |
op_container_end_page |
1679 |
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1800748020253327360 |