Piscivory by brown trout Salmo trutta L. and Arctic charr Salvelinus alpinus (L.) in Norwegian lakes
Size and frequency of occurrence of prey of brown trout Salmo trutta L. and Arctic charr Salvelinus alpinus (L.) were recorded in 13 Norwegian lakes during 1973–1990. Piscivores usually comprised less than 5% of the total population. Arctic charr were less piscivorous than brown trout. Trout and cha...
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crwiley:10.1111/j.1095-8649.1992.tb03172.x 2024-09-09T19:17:08+00:00 Piscivory by brown trout Salmo trutta L. and Arctic charr Salvelinus alpinus (L.) in Norwegian lakes L'Abée‐Lund, J. H. Langeland, A. Sægrov, H. 1992 http://dx.doi.org/10.1111/j.1095-8649.1992.tb03172.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1992.tb03172.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1992.tb03172.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 41, issue 1, page 91-101 ISSN 0022-1112 1095-8649 journal-article 1992 crwiley https://doi.org/10.1111/j.1095-8649.1992.tb03172.x 2024-08-22T04:18:08Z Size and frequency of occurrence of prey of brown trout Salmo trutta L. and Arctic charr Salvelinus alpinus (L.) were recorded in 13 Norwegian lakes during 1973–1990. Piscivores usually comprised less than 5% of the total population. Arctic charr were less piscivorous than brown trout. Trout and charr became piscivorous at 13 and 16 cm length, respectively. These size thresholds were similar to those of other facultative piscivorous freshwater fish species. When present, three‐spined sticklebacks, Gasterosteus aculeatus (L.), were preferred by all length groups of piscivorous brown trout and Arctic charr. Length of prey increased with increasing predator length, and the mean body length of prey was about 33 and 25% of predator length for trout and charr, respectively. Yearlings of charr were not recorded as prey. Article in Journal/Newspaper Arctic charr Arctic Salvelinus alpinus Wiley Online Library Arctic Journal of Fish Biology 41 1 91 101 |
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collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Size and frequency of occurrence of prey of brown trout Salmo trutta L. and Arctic charr Salvelinus alpinus (L.) were recorded in 13 Norwegian lakes during 1973–1990. Piscivores usually comprised less than 5% of the total population. Arctic charr were less piscivorous than brown trout. Trout and charr became piscivorous at 13 and 16 cm length, respectively. These size thresholds were similar to those of other facultative piscivorous freshwater fish species. When present, three‐spined sticklebacks, Gasterosteus aculeatus (L.), were preferred by all length groups of piscivorous brown trout and Arctic charr. Length of prey increased with increasing predator length, and the mean body length of prey was about 33 and 25% of predator length for trout and charr, respectively. Yearlings of charr were not recorded as prey. |
format |
Article in Journal/Newspaper |
author |
L'Abée‐Lund, J. H. Langeland, A. Sægrov, H. |
spellingShingle |
L'Abée‐Lund, J. H. Langeland, A. Sægrov, H. Piscivory by brown trout Salmo trutta L. and Arctic charr Salvelinus alpinus (L.) in Norwegian lakes |
author_facet |
L'Abée‐Lund, J. H. Langeland, A. Sægrov, H. |
author_sort |
L'Abée‐Lund, J. H. |
title |
Piscivory by brown trout Salmo trutta L. and Arctic charr Salvelinus alpinus (L.) in Norwegian lakes |
title_short |
Piscivory by brown trout Salmo trutta L. and Arctic charr Salvelinus alpinus (L.) in Norwegian lakes |
title_full |
Piscivory by brown trout Salmo trutta L. and Arctic charr Salvelinus alpinus (L.) in Norwegian lakes |
title_fullStr |
Piscivory by brown trout Salmo trutta L. and Arctic charr Salvelinus alpinus (L.) in Norwegian lakes |
title_full_unstemmed |
Piscivory by brown trout Salmo trutta L. and Arctic charr Salvelinus alpinus (L.) in Norwegian lakes |
title_sort |
piscivory by brown trout salmo trutta l. and arctic charr salvelinus alpinus (l.) in norwegian lakes |
publisher |
Wiley |
publishDate |
1992 |
url |
http://dx.doi.org/10.1111/j.1095-8649.1992.tb03172.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1992.tb03172.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1992.tb03172.x |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic charr Arctic Salvelinus alpinus |
genre_facet |
Arctic charr Arctic Salvelinus alpinus |
op_source |
Journal of Fish Biology volume 41, issue 1, page 91-101 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1095-8649.1992.tb03172.x |
container_title |
Journal of Fish Biology |
container_volume |
41 |
container_issue |
1 |
container_start_page |
91 |
op_container_end_page |
101 |
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1809757198026276864 |