The comparative lake ecology of two allopatric Arctic Charr, Salvelinus alpinus, populations with differing life histories in Cumberland Sound, Nunavut
The lake ecology of high-latitude fishes is strongly influenced by seasonal feeding opportunities and environmental stochasticity in Arctic environments. Arctic Charr (Salvelinus alpinus (Linnaeus, 1758)) populations are prevalent throughout the Arctic and show multiple life history strategies acros...
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Canadian Science Publishing
2021
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ftdoajarticles:oai:doaj.org/article:e9297da54ea047d9b670358538bcfcee 2023-05-15T14:23:38+02:00 The comparative lake ecology of two allopatric Arctic Charr, Salvelinus alpinus, populations with differing life histories in Cumberland Sound, Nunavut Angela L. Young Ross F. Tallman 2021-06-01T00:00:00Z https://doi.org/10.1139/as-2019-0037 https://doaj.org/article/e9297da54ea047d9b670358538bcfcee EN FR eng fre Canadian Science Publishing https://doi.org/10.1139/as-2019-0037 https://doaj.org/toc/2368-7460 doi:10.1139/as-2019-0037 2368-7460 https://doaj.org/article/e9297da54ea047d9b670358538bcfcee Arctic Science, Vol 7, Iss 2, Pp 1-23 (2021) arctic char lake ecology habitat use life history Environmental sciences GE1-350 Environmental engineering TA170-171 article 2021 ftdoajarticles https://doi.org/10.1139/as-2019-0037 2022-12-31T06:25:11Z The lake ecology of high-latitude fishes is strongly influenced by seasonal feeding opportunities and environmental stochasticity in Arctic environments. Arctic Charr (Salvelinus alpinus (Linnaeus, 1758)) populations are prevalent throughout the Arctic and show multiple life history strategies across their range. Unlike Old World populations, the lake ecology of Arctic Charr populations on south Baffin Island remains poorly defined. We examined the comparative seasonal lake ecology of two differing Arctic Charr populations (anadromous and landlocked) in Cumberland Sound, Nunavut. Anadromous Charr showed no evidence of feeding occurring within freshwater once they began seaward migrations. Anadromous Charr achieve sexual maturation at a larger size and younger age than landlocked Charr. Landlocked Charr used more lake habitats than anadromous Charr with feeding opportunities as an apparent influence on habitat selection. Landlocked Charr fed year round. They adopted a cannibalistic feeding strategy in the winter but consumed a variety of prey items in the fall. Littoral habitat was found to be important to all sizes of Charr in both seasons. Smaller anadromous Charr (<350 mm) did not use the benthic habitat. The variable ecology and form demonstrated further emphasizes the phenotypic adaptability of Arctic Charr that allows its widespread distribution in the Arctic. Article in Journal/Newspaper Arctic Arctic charr Arctic Baffin Island Baffin Cumberland Sound Nunavut Salvelinus alpinus Directory of Open Access Journals: DOAJ Articles Arctic Baffin Island Cumberland Sound ENVELOPE(-66.014,-66.014,65.334,65.334) More Lake ENVELOPE(-100.220,-100.220,56.794,56.794) Nunavut Arctic Science 7 2 471 493 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English French |
topic |
arctic char lake ecology habitat use life history Environmental sciences GE1-350 Environmental engineering TA170-171 |
spellingShingle |
arctic char lake ecology habitat use life history Environmental sciences GE1-350 Environmental engineering TA170-171 Angela L. Young Ross F. Tallman The comparative lake ecology of two allopatric Arctic Charr, Salvelinus alpinus, populations with differing life histories in Cumberland Sound, Nunavut |
topic_facet |
arctic char lake ecology habitat use life history Environmental sciences GE1-350 Environmental engineering TA170-171 |
description |
The lake ecology of high-latitude fishes is strongly influenced by seasonal feeding opportunities and environmental stochasticity in Arctic environments. Arctic Charr (Salvelinus alpinus (Linnaeus, 1758)) populations are prevalent throughout the Arctic and show multiple life history strategies across their range. Unlike Old World populations, the lake ecology of Arctic Charr populations on south Baffin Island remains poorly defined. We examined the comparative seasonal lake ecology of two differing Arctic Charr populations (anadromous and landlocked) in Cumberland Sound, Nunavut. Anadromous Charr showed no evidence of feeding occurring within freshwater once they began seaward migrations. Anadromous Charr achieve sexual maturation at a larger size and younger age than landlocked Charr. Landlocked Charr used more lake habitats than anadromous Charr with feeding opportunities as an apparent influence on habitat selection. Landlocked Charr fed year round. They adopted a cannibalistic feeding strategy in the winter but consumed a variety of prey items in the fall. Littoral habitat was found to be important to all sizes of Charr in both seasons. Smaller anadromous Charr (<350 mm) did not use the benthic habitat. The variable ecology and form demonstrated further emphasizes the phenotypic adaptability of Arctic Charr that allows its widespread distribution in the Arctic. |
format |
Article in Journal/Newspaper |
author |
Angela L. Young Ross F. Tallman |
author_facet |
Angela L. Young Ross F. Tallman |
author_sort |
Angela L. Young |
title |
The comparative lake ecology of two allopatric Arctic Charr, Salvelinus alpinus, populations with differing life histories in Cumberland Sound, Nunavut |
title_short |
The comparative lake ecology of two allopatric Arctic Charr, Salvelinus alpinus, populations with differing life histories in Cumberland Sound, Nunavut |
title_full |
The comparative lake ecology of two allopatric Arctic Charr, Salvelinus alpinus, populations with differing life histories in Cumberland Sound, Nunavut |
title_fullStr |
The comparative lake ecology of two allopatric Arctic Charr, Salvelinus alpinus, populations with differing life histories in Cumberland Sound, Nunavut |
title_full_unstemmed |
The comparative lake ecology of two allopatric Arctic Charr, Salvelinus alpinus, populations with differing life histories in Cumberland Sound, Nunavut |
title_sort |
comparative lake ecology of two allopatric arctic charr, salvelinus alpinus, populations with differing life histories in cumberland sound, nunavut |
publisher |
Canadian Science Publishing |
publishDate |
2021 |
url |
https://doi.org/10.1139/as-2019-0037 https://doaj.org/article/e9297da54ea047d9b670358538bcfcee |
long_lat |
ENVELOPE(-66.014,-66.014,65.334,65.334) ENVELOPE(-100.220,-100.220,56.794,56.794) |
geographic |
Arctic Baffin Island Cumberland Sound More Lake Nunavut |
geographic_facet |
Arctic Baffin Island Cumberland Sound More Lake Nunavut |
genre |
Arctic Arctic charr Arctic Baffin Island Baffin Cumberland Sound Nunavut Salvelinus alpinus |
genre_facet |
Arctic Arctic charr Arctic Baffin Island Baffin Cumberland Sound Nunavut Salvelinus alpinus |
op_source |
Arctic Science, Vol 7, Iss 2, Pp 1-23 (2021) |
op_relation |
https://doi.org/10.1139/as-2019-0037 https://doaj.org/toc/2368-7460 doi:10.1139/as-2019-0037 2368-7460 https://doaj.org/article/e9297da54ea047d9b670358538bcfcee |
op_doi |
https://doi.org/10.1139/as-2019-0037 |
container_title |
Arctic Science |
container_volume |
7 |
container_issue |
2 |
container_start_page |
471 |
op_container_end_page |
493 |
_version_ |
1766296138483236864 |