Divergent, genetically based feeding behaviour of two sympatric Arctic charr, Salvelinus alpinus (L.), morphs
Abstract – Arctic charr, Salvelinus alpinus (L.), is one of the several northern fishes that show resource polymorphisms in postglacial lakes. Two reproductively isolated morphs of Arctic charr coexist in distinct ecological niches in the subarctic lake Fjellfrøsvatn, North Norway. Offspring of the...
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crwiley:10.1111/j.1600-0633.2006.00128.x 2023-12-03T10:15:26+01:00 Divergent, genetically based feeding behaviour of two sympatric Arctic charr, Salvelinus alpinus (L.), morphs Klemetsen, A. Knudsen, R. Primicerio, R. Amundsen, P.‐A. 2006 http://dx.doi.org/10.1111/j.1600-0633.2006.00128.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1600-0633.2006.00128.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1600-0633.2006.00128.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Ecology of Freshwater Fish volume 15, issue 3, page 350-355 ISSN 0906-6691 1600-0633 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2006 crwiley https://doi.org/10.1111/j.1600-0633.2006.00128.x 2023-11-09T14:27:12Z Abstract – Arctic charr, Salvelinus alpinus (L.), is one of the several northern fishes that show resource polymorphisms in postglacial lakes. Two reproductively isolated morphs of Arctic charr coexist in distinct ecological niches in the subarctic lake Fjellfrøsvatn, North Norway. Offspring of the two morphs (termed littoral charr and profundal charr) were reared separately but under identical conditions. Their feeding behaviour was compared experimentally using different kinds of live prey. The fishes had no experience with natural prey before the experiments. The littoral morph were more effective in eating live plankton ( Daphnia ) and littoral benthos ( Gammarus ), and had a higher attack rate against pleuston (surface prey, Gerris ) compared with the profundal morph. The two morphs behaved in accordance with expectations from their in situ niche utilisation towards the three prey types. This indicates a case of incipient ecological speciation where divergence in resource utilisation in contrasting niches has evolved adaptations in feeding behaviour by natural selection. Article in Journal/Newspaper Arctic charr Arctic North Norway Salvelinus alpinus Subarctic Wiley Online Library (via Crossref) Arctic Norway Ecology of Freshwater Fish 15 3 350 355 |
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Open Polar |
collection |
Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Klemetsen, A. Knudsen, R. Primicerio, R. Amundsen, P.‐A. Divergent, genetically based feeding behaviour of two sympatric Arctic charr, Salvelinus alpinus (L.), morphs |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Abstract – Arctic charr, Salvelinus alpinus (L.), is one of the several northern fishes that show resource polymorphisms in postglacial lakes. Two reproductively isolated morphs of Arctic charr coexist in distinct ecological niches in the subarctic lake Fjellfrøsvatn, North Norway. Offspring of the two morphs (termed littoral charr and profundal charr) were reared separately but under identical conditions. Their feeding behaviour was compared experimentally using different kinds of live prey. The fishes had no experience with natural prey before the experiments. The littoral morph were more effective in eating live plankton ( Daphnia ) and littoral benthos ( Gammarus ), and had a higher attack rate against pleuston (surface prey, Gerris ) compared with the profundal morph. The two morphs behaved in accordance with expectations from their in situ niche utilisation towards the three prey types. This indicates a case of incipient ecological speciation where divergence in resource utilisation in contrasting niches has evolved adaptations in feeding behaviour by natural selection. |
format |
Article in Journal/Newspaper |
author |
Klemetsen, A. Knudsen, R. Primicerio, R. Amundsen, P.‐A. |
author_facet |
Klemetsen, A. Knudsen, R. Primicerio, R. Amundsen, P.‐A. |
author_sort |
Klemetsen, A. |
title |
Divergent, genetically based feeding behaviour of two sympatric Arctic charr, Salvelinus alpinus (L.), morphs |
title_short |
Divergent, genetically based feeding behaviour of two sympatric Arctic charr, Salvelinus alpinus (L.), morphs |
title_full |
Divergent, genetically based feeding behaviour of two sympatric Arctic charr, Salvelinus alpinus (L.), morphs |
title_fullStr |
Divergent, genetically based feeding behaviour of two sympatric Arctic charr, Salvelinus alpinus (L.), morphs |
title_full_unstemmed |
Divergent, genetically based feeding behaviour of two sympatric Arctic charr, Salvelinus alpinus (L.), morphs |
title_sort |
divergent, genetically based feeding behaviour of two sympatric arctic charr, salvelinus alpinus (l.), morphs |
publisher |
Wiley |
publishDate |
2006 |
url |
http://dx.doi.org/10.1111/j.1600-0633.2006.00128.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1600-0633.2006.00128.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1600-0633.2006.00128.x |
geographic |
Arctic Norway |
geographic_facet |
Arctic Norway |
genre |
Arctic charr Arctic North Norway Salvelinus alpinus Subarctic |
genre_facet |
Arctic charr Arctic North Norway Salvelinus alpinus Subarctic |
op_source |
Ecology of Freshwater Fish volume 15, issue 3, page 350-355 ISSN 0906-6691 1600-0633 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1600-0633.2006.00128.x |
container_title |
Ecology of Freshwater Fish |
container_volume |
15 |
container_issue |
3 |
container_start_page |
350 |
op_container_end_page |
355 |
_version_ |
1784262346478190592 |