Prey consumption rates and growth of piscivorous brown trout in a subarctic watercourse
Prey consumption rates of piscivorous brown trout Salmo trutta were studied in the Pasvik watercourse, which forms the border between Norway and Russia. Estimates of food consumption in the field were similar to or slightly less than maximum values from a bioenergetic model. The piscivore diet consi...
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crwiley:10.1111/j.0022-1112.2006.00972.x 2024-06-02T08:12:52+00:00 Prey consumption rates and growth of piscivorous brown trout in a subarctic watercourse Jensen, H. Amundsen, P.‐A. Elliott, J. M. Bøhn, T. Aspholm, P. E. 2006 http://dx.doi.org/10.1111/j.0022-1112.2006.00972.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.0022-1112.2006.00972.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.0022-1112.2006.00972.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 68, issue 3, page 838-848 ISSN 0022-1112 1095-8649 journal-article 2006 crwiley https://doi.org/10.1111/j.0022-1112.2006.00972.x 2024-05-03T11:13:32Z Prey consumption rates of piscivorous brown trout Salmo trutta were studied in the Pasvik watercourse, which forms the border between Norway and Russia. Estimates of food consumption in the field were similar to or slightly less than maximum values from a bioenergetic model. The piscivore diet consisted mainly of vendace Coregonus albula with a smaller number of whitefish Coregonus lavaretus . Individual brown trout had an estimated mean daily intake of c . 1·5 vendace and 0·4 whitefish, and a rapid annual growth increment of 7–8 cm year −1 . The total population of brown trout >25 cm total length was estimated as 8445 individuals (0·6 individuals ha −1 ), giving a mean ± s . e . annual consumption of 1553880 ± 405360 vendace and 439140 ± 287130 whitefish for the whole watercourse. The rapid growth in summer of brown trout >25 cm indicated a high prey consumption rate. Article in Journal/Newspaper Pasvik Subarctic Wiley Online Library Norway Pasvik ENVELOPE(30.580,30.580,69.810,69.810) Journal of Fish Biology 68 3 838 848 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Prey consumption rates of piscivorous brown trout Salmo trutta were studied in the Pasvik watercourse, which forms the border between Norway and Russia. Estimates of food consumption in the field were similar to or slightly less than maximum values from a bioenergetic model. The piscivore diet consisted mainly of vendace Coregonus albula with a smaller number of whitefish Coregonus lavaretus . Individual brown trout had an estimated mean daily intake of c . 1·5 vendace and 0·4 whitefish, and a rapid annual growth increment of 7–8 cm year −1 . The total population of brown trout >25 cm total length was estimated as 8445 individuals (0·6 individuals ha −1 ), giving a mean ± s . e . annual consumption of 1553880 ± 405360 vendace and 439140 ± 287130 whitefish for the whole watercourse. The rapid growth in summer of brown trout >25 cm indicated a high prey consumption rate. |
format |
Article in Journal/Newspaper |
author |
Jensen, H. Amundsen, P.‐A. Elliott, J. M. Bøhn, T. Aspholm, P. E. |
spellingShingle |
Jensen, H. Amundsen, P.‐A. Elliott, J. M. Bøhn, T. Aspholm, P. E. Prey consumption rates and growth of piscivorous brown trout in a subarctic watercourse |
author_facet |
Jensen, H. Amundsen, P.‐A. Elliott, J. M. Bøhn, T. Aspholm, P. E. |
author_sort |
Jensen, H. |
title |
Prey consumption rates and growth of piscivorous brown trout in a subarctic watercourse |
title_short |
Prey consumption rates and growth of piscivorous brown trout in a subarctic watercourse |
title_full |
Prey consumption rates and growth of piscivorous brown trout in a subarctic watercourse |
title_fullStr |
Prey consumption rates and growth of piscivorous brown trout in a subarctic watercourse |
title_full_unstemmed |
Prey consumption rates and growth of piscivorous brown trout in a subarctic watercourse |
title_sort |
prey consumption rates and growth of piscivorous brown trout in a subarctic watercourse |
publisher |
Wiley |
publishDate |
2006 |
url |
http://dx.doi.org/10.1111/j.0022-1112.2006.00972.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.0022-1112.2006.00972.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.0022-1112.2006.00972.x |
long_lat |
ENVELOPE(30.580,30.580,69.810,69.810) |
geographic |
Norway Pasvik |
geographic_facet |
Norway Pasvik |
genre |
Pasvik Subarctic |
genre_facet |
Pasvik Subarctic |
op_source |
Journal of Fish Biology volume 68, issue 3, page 838-848 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.0022-1112.2006.00972.x |
container_title |
Journal of Fish Biology |
container_volume |
68 |
container_issue |
3 |
container_start_page |
838 |
op_container_end_page |
848 |
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1800759428250599424 |