Divergent functional traits in three sympatric Arctic charr Salvelinus alpinus morphs are not coupled with the age of the lineage divergence
Three genetically discrete morphs of Arctic charr in Loch Rannoch, Scotland originated from a recent divergence within the lake (in situ) (piscivore and benthivore morphs) and from secondary contact of two older lineages (ex situ; a planktivore–piscivore/ benthivore divergence). To test if the expre...
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Online Access: | https://hdl.handle.net/10037/25240 https://doi.org/10.1007/s10750-016-2964-7 |
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ftunivtroemsoe:oai:munin.uit.no:10037/25240 2023-05-15T14:25:43+02:00 Divergent functional traits in three sympatric Arctic charr Salvelinus alpinus morphs are not coupled with the age of the lineage divergence Bryce, Carolyn Alicia, Fraser Knudsen, Rune Greer, Ron Adams, Colin Ean 2016-10-24 https://hdl.handle.net/10037/25240 https://doi.org/10.1007/s10750-016-2964-7 eng eng Springer Hydrobiologia Bryce C, Alicia, Knudsen R, Greer, Adams CE. Divergent functional traits in three sympatric Arctic charr Salvelinus alpinus morphs are not coupled with the age of the lineage divergence. Hydrobiologia. 2016;783(1):177-189 FRIDAID 1396357 doi:10.1007/s10750-016-2964-7 0018-8158 1573-5117 https://hdl.handle.net/10037/25240 openAccess Copyright 2016 The Author(s) Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2016 ftunivtroemsoe https://doi.org/10.1007/s10750-016-2964-7 2022-05-25T22:58:56Z Three genetically discrete morphs of Arctic charr in Loch Rannoch, Scotland originated from a recent divergence within the lake (in situ) (piscivore and benthivore morphs) and from secondary contact of two older lineages (ex situ; a planktivore–piscivore/ benthivore divergence). To test if the expression of traits with strong functional roles was linked to the age of the divergence, fin and gill anatomy, and dentition were quantified and compared across morphs. Five additional working hypotheses suggesting a rank order of trait expression amongst morphs were also tested. The planktivorous morph had more rays in the dorsal and pectoral fins, longer gill rakers (but not more) as well as a smaller gill cavity than the other two morphs. The piscivorous morph had more palatine teeth and longer teeth on the mandible, pre-maxillary and glossohyal bones, and a larger buccal cavity. These differences indicate a differential response to selection in these functional anatomical features most likely related to morph foraging specialisms. Notably, between-morph divergences in the expression of these traits were not simply linked to the length of divergence between morphs and have arisen equally quickly in the recent (in situ) divergence as they have in older, ex situ divergences. Article in Journal/Newspaper Arctic Arctic charr Arctic Salvelinus alpinus University of Tromsø: Munin Open Research Archive Arctic Hydrobiologia 783 1 177 189 |
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Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
description |
Three genetically discrete morphs of Arctic charr in Loch Rannoch, Scotland originated from a recent divergence within the lake (in situ) (piscivore and benthivore morphs) and from secondary contact of two older lineages (ex situ; a planktivore–piscivore/ benthivore divergence). To test if the expression of traits with strong functional roles was linked to the age of the divergence, fin and gill anatomy, and dentition were quantified and compared across morphs. Five additional working hypotheses suggesting a rank order of trait expression amongst morphs were also tested. The planktivorous morph had more rays in the dorsal and pectoral fins, longer gill rakers (but not more) as well as a smaller gill cavity than the other two morphs. The piscivorous morph had more palatine teeth and longer teeth on the mandible, pre-maxillary and glossohyal bones, and a larger buccal cavity. These differences indicate a differential response to selection in these functional anatomical features most likely related to morph foraging specialisms. Notably, between-morph divergences in the expression of these traits were not simply linked to the length of divergence between morphs and have arisen equally quickly in the recent (in situ) divergence as they have in older, ex situ divergences. |
format |
Article in Journal/Newspaper |
author |
Bryce, Carolyn Alicia, Fraser Knudsen, Rune Greer, Ron Adams, Colin Ean |
spellingShingle |
Bryce, Carolyn Alicia, Fraser Knudsen, Rune Greer, Ron Adams, Colin Ean Divergent functional traits in three sympatric Arctic charr Salvelinus alpinus morphs are not coupled with the age of the lineage divergence |
author_facet |
Bryce, Carolyn Alicia, Fraser Knudsen, Rune Greer, Ron Adams, Colin Ean |
author_sort |
Bryce, Carolyn |
title |
Divergent functional traits in three sympatric Arctic charr Salvelinus alpinus morphs are not coupled with the age of the lineage divergence |
title_short |
Divergent functional traits in three sympatric Arctic charr Salvelinus alpinus morphs are not coupled with the age of the lineage divergence |
title_full |
Divergent functional traits in three sympatric Arctic charr Salvelinus alpinus morphs are not coupled with the age of the lineage divergence |
title_fullStr |
Divergent functional traits in three sympatric Arctic charr Salvelinus alpinus morphs are not coupled with the age of the lineage divergence |
title_full_unstemmed |
Divergent functional traits in three sympatric Arctic charr Salvelinus alpinus morphs are not coupled with the age of the lineage divergence |
title_sort |
divergent functional traits in three sympatric arctic charr salvelinus alpinus morphs are not coupled with the age of the lineage divergence |
publisher |
Springer |
publishDate |
2016 |
url |
https://hdl.handle.net/10037/25240 https://doi.org/10.1007/s10750-016-2964-7 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic charr Arctic Salvelinus alpinus |
genre_facet |
Arctic Arctic charr Arctic Salvelinus alpinus |
op_relation |
Hydrobiologia Bryce C, Alicia, Knudsen R, Greer, Adams CE. Divergent functional traits in three sympatric Arctic charr Salvelinus alpinus morphs are not coupled with the age of the lineage divergence. Hydrobiologia. 2016;783(1):177-189 FRIDAID 1396357 doi:10.1007/s10750-016-2964-7 0018-8158 1573-5117 https://hdl.handle.net/10037/25240 |
op_rights |
openAccess Copyright 2016 The Author(s) |
op_doi |
https://doi.org/10.1007/s10750-016-2964-7 |
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Hydrobiologia |
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783 |
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1 |
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177 |
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189 |
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1766298182633914368 |