Food composition, habitat use and growth of stocked and native Arctic charr, Salvelinus alpinus, in Lake Muddusjärvi, Finland
Habitat use, growth and food composition of native and stocked Arctic charr, Salvelinus alpinus (L.), were studied in the subarctic Lake Muddusjärvi, northern Finland, to investigate reasons for poor stocking success. Samples were collected with pelagic and epibenthic gill nets. Stocked and native c...
Published in: | Fisheries Management and Ecology |
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Language: | English |
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crwiley:10.1046/j.1365-2400.2002.00302.x 2024-06-02T08:00:04+00:00 Food composition, habitat use and growth of stocked and native Arctic charr, Salvelinus alpinus, in Lake Muddusjärvi, Finland KAHILAINEN, K. LEHTONEN, H. 2002 http://dx.doi.org/10.1046/j.1365-2400.2002.00302.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1365-2400.2002.00302.x https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1365-2400.2002.00302.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Fisheries Management and Ecology volume 9, issue 4, page 197-204 ISSN 0969-997X 1365-2400 journal-article 2002 crwiley https://doi.org/10.1046/j.1365-2400.2002.00302.x 2024-05-03T11:29:41Z Habitat use, growth and food composition of native and stocked Arctic charr, Salvelinus alpinus (L.), were studied in the subarctic Lake Muddusjärvi, northern Finland, to investigate reasons for poor stocking success. Samples were collected with pelagic and epibenthic gill nets. Stocked and native charr occurred in similar epibethic habitats, whereas pelagic habitat was avoided. Native charr grew fast after shifting to piscivory. Growth rate of stocked charr was slow because only a small proportion of stocked fish became piscivorous during the first year after stocking. During the first lake year, stocked charr divided into slow‐growing planktivores and fast‐growing piscivores. Piscivorous stocked and native charr consumed only whitefish, Coregonus lavaretus (L.), as their prey. Small‐sized (<10 cm) whitefish were preferred when shifting to piscivory. Article in Journal/Newspaper Arctic charr Arctic Northern Finland Salvelinus alpinus Subarctic Wiley Online Library Arctic Muddusjärvi ENVELOPE(26.800,26.800,69.000,69.000) Fisheries Management and Ecology 9 4 197 204 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Habitat use, growth and food composition of native and stocked Arctic charr, Salvelinus alpinus (L.), were studied in the subarctic Lake Muddusjärvi, northern Finland, to investigate reasons for poor stocking success. Samples were collected with pelagic and epibenthic gill nets. Stocked and native charr occurred in similar epibethic habitats, whereas pelagic habitat was avoided. Native charr grew fast after shifting to piscivory. Growth rate of stocked charr was slow because only a small proportion of stocked fish became piscivorous during the first year after stocking. During the first lake year, stocked charr divided into slow‐growing planktivores and fast‐growing piscivores. Piscivorous stocked and native charr consumed only whitefish, Coregonus lavaretus (L.), as their prey. Small‐sized (<10 cm) whitefish were preferred when shifting to piscivory. |
format |
Article in Journal/Newspaper |
author |
KAHILAINEN, K. LEHTONEN, H. |
spellingShingle |
KAHILAINEN, K. LEHTONEN, H. Food composition, habitat use and growth of stocked and native Arctic charr, Salvelinus alpinus, in Lake Muddusjärvi, Finland |
author_facet |
KAHILAINEN, K. LEHTONEN, H. |
author_sort |
KAHILAINEN, K. |
title |
Food composition, habitat use and growth of stocked and native Arctic charr, Salvelinus alpinus, in Lake Muddusjärvi, Finland |
title_short |
Food composition, habitat use and growth of stocked and native Arctic charr, Salvelinus alpinus, in Lake Muddusjärvi, Finland |
title_full |
Food composition, habitat use and growth of stocked and native Arctic charr, Salvelinus alpinus, in Lake Muddusjärvi, Finland |
title_fullStr |
Food composition, habitat use and growth of stocked and native Arctic charr, Salvelinus alpinus, in Lake Muddusjärvi, Finland |
title_full_unstemmed |
Food composition, habitat use and growth of stocked and native Arctic charr, Salvelinus alpinus, in Lake Muddusjärvi, Finland |
title_sort |
food composition, habitat use and growth of stocked and native arctic charr, salvelinus alpinus, in lake muddusjärvi, finland |
publisher |
Wiley |
publishDate |
2002 |
url |
http://dx.doi.org/10.1046/j.1365-2400.2002.00302.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1365-2400.2002.00302.x https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1365-2400.2002.00302.x |
long_lat |
ENVELOPE(26.800,26.800,69.000,69.000) |
geographic |
Arctic Muddusjärvi |
geographic_facet |
Arctic Muddusjärvi |
genre |
Arctic charr Arctic Northern Finland Salvelinus alpinus Subarctic |
genre_facet |
Arctic charr Arctic Northern Finland Salvelinus alpinus Subarctic |
op_source |
Fisheries Management and Ecology volume 9, issue 4, page 197-204 ISSN 0969-997X 1365-2400 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1046/j.1365-2400.2002.00302.x |
container_title |
Fisheries Management and Ecology |
container_volume |
9 |
container_issue |
4 |
container_start_page |
197 |
op_container_end_page |
204 |
_version_ |
1800744081655070720 |