Contrasting patterns in trophic niche evolution of polymorphic Arctic charr populations in two subarctic Norwegian lakes
This is a post-peer-review, pre-copyedit version of an article published in Hydrobiologia . The final authenticated version is available online at https://doi.org/10.1007/s10750-019-3969-9 . Parallelism in trophic niches of polymorphic populations of Arctic charr was investigated in two similar suba...
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Online Access: | https://hdl.handle.net/10037/17370 https://doi.org/10.1007/s10750-019-3969-9 |
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ftunivtroemsoe:oai:munin.uit.no:10037/17370 2023-05-15T14:30:03+02:00 Contrasting patterns in trophic niche evolution of polymorphic Arctic charr populations in two subarctic Norwegian lakes Moccetti, Paolo Maria Siwertsson, Anna Kjær, Runar Amundsen, Per-Arne Præbel, Kim Tamayo, Ana-Maria Peris Power, Michael Knudsen, Rune 2019-05-15 https://hdl.handle.net/10037/17370 https://doi.org/10.1007/s10750-019-3969-9 eng eng Springer Nature Hydrobiologia FRIDAID 1708577 doi:10.1007/s10750-019-3969-9 0018-8158 1573-5117 https://hdl.handle.net/10037/17370 openAccess © Springer Nature Switzerland AG 2019 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 Journal article Tidsskriftartikkel Peer reviewed acceptedVersion 2019 ftunivtroemsoe https://doi.org/10.1007/s10750-019-3969-9 2021-06-25T17:57:03Z This is a post-peer-review, pre-copyedit version of an article published in Hydrobiologia . The final authenticated version is available online at https://doi.org/10.1007/s10750-019-3969-9 . Parallelism in trophic niches of polymorphic populations of Arctic charr was investigated in two similar subarctic lakes, Tårnvatn and Skøvatn, in northern Norway. Analysis of eleven microsatellite loci confirmed, respectively, the existence of three and two genetically differentiated morphs. Three methods were used to describe their trophic niches: habitat choice and stomach contents for the recent feeding behaviour, and trophically transmitted parasites and stable isotopes (δ 13 C and δ 15 N) as proxies for the longer term trophic niche differences. The results showed a distinct segregation in trophic resource utilization of the different morphs. Tårnvatn has three morphs: a littoral omnivorous (LO), a small-sized profundal benthivorous (PB), and a large-sized profundal piscivorous (PP). In contrast, a novel Arctic charr morph was discovered in Skøvatn: a small-sized profundal zooplanktivorous-morph (PZ), which when compared to the sympatric LO-morph, had distinct stable isotope values and a contrasting parasite community. A parallelism in habitat choice and external morphology was found among the small-sized, deep-water morphs and between the upper-water, omnivorous LO-morphs in both lakes. There was a no parallel pattern in diet choice between the PB- and the PZ-morphs. These findings show how evolution can produce diverse outcomes, even among systems with apparently similar environmental and ecological conditions. Article in Journal/Newspaper Arctic charr Arctic Northern Norway Subarctic University of Tromsø: Munin Open Research Archive Arctic Norway Hydrobiologia 840 1 281 299 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 |
spellingShingle |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 Moccetti, Paolo Maria Siwertsson, Anna Kjær, Runar Amundsen, Per-Arne Præbel, Kim Tamayo, Ana-Maria Peris Power, Michael Knudsen, Rune Contrasting patterns in trophic niche evolution of polymorphic Arctic charr populations in two subarctic Norwegian lakes |
topic_facet |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 |
description |
This is a post-peer-review, pre-copyedit version of an article published in Hydrobiologia . The final authenticated version is available online at https://doi.org/10.1007/s10750-019-3969-9 . Parallelism in trophic niches of polymorphic populations of Arctic charr was investigated in two similar subarctic lakes, Tårnvatn and Skøvatn, in northern Norway. Analysis of eleven microsatellite loci confirmed, respectively, the existence of three and two genetically differentiated morphs. Three methods were used to describe their trophic niches: habitat choice and stomach contents for the recent feeding behaviour, and trophically transmitted parasites and stable isotopes (δ 13 C and δ 15 N) as proxies for the longer term trophic niche differences. The results showed a distinct segregation in trophic resource utilization of the different morphs. Tårnvatn has three morphs: a littoral omnivorous (LO), a small-sized profundal benthivorous (PB), and a large-sized profundal piscivorous (PP). In contrast, a novel Arctic charr morph was discovered in Skøvatn: a small-sized profundal zooplanktivorous-morph (PZ), which when compared to the sympatric LO-morph, had distinct stable isotope values and a contrasting parasite community. A parallelism in habitat choice and external morphology was found among the small-sized, deep-water morphs and between the upper-water, omnivorous LO-morphs in both lakes. There was a no parallel pattern in diet choice between the PB- and the PZ-morphs. These findings show how evolution can produce diverse outcomes, even among systems with apparently similar environmental and ecological conditions. |
format |
Article in Journal/Newspaper |
author |
Moccetti, Paolo Maria Siwertsson, Anna Kjær, Runar Amundsen, Per-Arne Præbel, Kim Tamayo, Ana-Maria Peris Power, Michael Knudsen, Rune |
author_facet |
Moccetti, Paolo Maria Siwertsson, Anna Kjær, Runar Amundsen, Per-Arne Præbel, Kim Tamayo, Ana-Maria Peris Power, Michael Knudsen, Rune |
author_sort |
Moccetti, Paolo Maria |
title |
Contrasting patterns in trophic niche evolution of polymorphic Arctic charr populations in two subarctic Norwegian lakes |
title_short |
Contrasting patterns in trophic niche evolution of polymorphic Arctic charr populations in two subarctic Norwegian lakes |
title_full |
Contrasting patterns in trophic niche evolution of polymorphic Arctic charr populations in two subarctic Norwegian lakes |
title_fullStr |
Contrasting patterns in trophic niche evolution of polymorphic Arctic charr populations in two subarctic Norwegian lakes |
title_full_unstemmed |
Contrasting patterns in trophic niche evolution of polymorphic Arctic charr populations in two subarctic Norwegian lakes |
title_sort |
contrasting patterns in trophic niche evolution of polymorphic arctic charr populations in two subarctic norwegian lakes |
publisher |
Springer Nature |
publishDate |
2019 |
url |
https://hdl.handle.net/10037/17370 https://doi.org/10.1007/s10750-019-3969-9 |
geographic |
Arctic Norway |
geographic_facet |
Arctic Norway |
genre |
Arctic charr Arctic Northern Norway Subarctic |
genre_facet |
Arctic charr Arctic Northern Norway Subarctic |
op_relation |
Hydrobiologia FRIDAID 1708577 doi:10.1007/s10750-019-3969-9 0018-8158 1573-5117 https://hdl.handle.net/10037/17370 |
op_rights |
openAccess © Springer Nature Switzerland AG 2019 |
op_doi |
https://doi.org/10.1007/s10750-019-3969-9 |
container_title |
Hydrobiologia |
container_volume |
840 |
container_issue |
1 |
container_start_page |
281 |
op_container_end_page |
299 |
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1766303970846834688 |