Growth characteristics and age at first migration of anadromous and resident Arctic char (Salvelinus alpinus) and lake trout (Salvelinus namaycush) in the Canadian Arctic (2006-2008)
In the family Salmonidae, lake trout (Salvelinus namaycush) are considered the least tolerant of salt water. There are, however, sporadic reports of lake trout in coastal, brackish habitats in the Canadian Arctic. Otolith microchemistry analyses conducted on lake trout and Arctic char (Salvelinus al...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.838933 2024-09-15T17:50:21+00:00 Growth characteristics and age at first migration of anadromous and resident Arctic char (Salvelinus alpinus) and lake trout (Salvelinus namaycush) in the Canadian Arctic (2006-2008) Swanson, Heidi K Kidd, Karen A Babaluk, John A Wastle, Rick J Yang, Panseok P Halden, Norman M Reist, James D MEDIAN LATITUDE: 68.241263 * MEDIAN LONGITUDE: -107.193150 * SOUTH-BOUND LATITUDE: 68.060400 * WEST-BOUND LONGITUDE: -107.710000 * NORTH-BOUND LATITUDE: 68.370000 * EAST-BOUND LONGITUDE: -106.503000 2010 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.838933 https://doi.org/10.1594/PANGAEA.838933 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.838933 https://doi.org/10.1594/PANGAEA.838933 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Swanson, Heidi K; Kidd, Karen A; Babaluk, John A; Wastle, Rick J; Yang, Panseok P; Halden, Norman M; Reist, James D (2010): Anadromy in Arctic populations of lake trout (Salvelinus namaycush): otolith microchemistry, stable isotopes, and comparisons with Arctic char (Salvelinus alpinus). Canadian Journal of Fisheries and Aquatic Sciences, 67(5), 842-853, https://doi.org/10.1139/F10-022 International Polar Year (2007-2008) IPY dataset publication series 2010 ftpangaea https://doi.org/10.1594/PANGAEA.83893310.1139/F10-022 2024-07-24T02:31:21Z In the family Salmonidae, lake trout (Salvelinus namaycush) are considered the least tolerant of salt water. There are, however, sporadic reports of lake trout in coastal, brackish habitats in the Canadian Arctic. Otolith microchemistry analyses conducted on lake trout and Arctic char (Salvelinus alpinus) from four Arctic lakes in the West Kitikmeot region of Nunavut, Canada, revealed that 37 of 135 (27%) lake trout made annual marine migrations. Anadromous lake trout were in significantly better condition (K = 1.17) and had significantly higher C:N ratios (3.71) than resident lake trout (K = 1.05 and C:N = 3.34). Anadromous lake trout also had significantly higher d15N (mean = 16.4 per mil), d13C (mean = -22.3 per mil), and d34S (mean = 13.43 per mil) isotope ratios than resident lake trout (means = 12.84 per mil, -26.21 per mil, and 1.93 per mil for d15N, d13C, and d34S, respectively); results were similar for Arctic char and agree with results from previous studies. Mean age of first migration for lake trout was 13 years, which was significantly older than that for Arctic char (5 years). This could be a reflection of size-dependent salinity tolerance in lake trout, but further research is required. These are the first detailed scientific data documenting anadromy in lake trout. Other/Unknown Material Arctic International Polar Year Kitikmeot Nunavut Salvelinus alpinus PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-107.710000,-106.503000,68.370000,68.060400) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
International Polar Year (2007-2008) IPY |
spellingShingle |
International Polar Year (2007-2008) IPY Swanson, Heidi K Kidd, Karen A Babaluk, John A Wastle, Rick J Yang, Panseok P Halden, Norman M Reist, James D Growth characteristics and age at first migration of anadromous and resident Arctic char (Salvelinus alpinus) and lake trout (Salvelinus namaycush) in the Canadian Arctic (2006-2008) |
topic_facet |
International Polar Year (2007-2008) IPY |
description |
In the family Salmonidae, lake trout (Salvelinus namaycush) are considered the least tolerant of salt water. There are, however, sporadic reports of lake trout in coastal, brackish habitats in the Canadian Arctic. Otolith microchemistry analyses conducted on lake trout and Arctic char (Salvelinus alpinus) from four Arctic lakes in the West Kitikmeot region of Nunavut, Canada, revealed that 37 of 135 (27%) lake trout made annual marine migrations. Anadromous lake trout were in significantly better condition (K = 1.17) and had significantly higher C:N ratios (3.71) than resident lake trout (K = 1.05 and C:N = 3.34). Anadromous lake trout also had significantly higher d15N (mean = 16.4 per mil), d13C (mean = -22.3 per mil), and d34S (mean = 13.43 per mil) isotope ratios than resident lake trout (means = 12.84 per mil, -26.21 per mil, and 1.93 per mil for d15N, d13C, and d34S, respectively); results were similar for Arctic char and agree with results from previous studies. Mean age of first migration for lake trout was 13 years, which was significantly older than that for Arctic char (5 years). This could be a reflection of size-dependent salinity tolerance in lake trout, but further research is required. These are the first detailed scientific data documenting anadromy in lake trout. |
format |
Other/Unknown Material |
author |
Swanson, Heidi K Kidd, Karen A Babaluk, John A Wastle, Rick J Yang, Panseok P Halden, Norman M Reist, James D |
author_facet |
Swanson, Heidi K Kidd, Karen A Babaluk, John A Wastle, Rick J Yang, Panseok P Halden, Norman M Reist, James D |
author_sort |
Swanson, Heidi K |
title |
Growth characteristics and age at first migration of anadromous and resident Arctic char (Salvelinus alpinus) and lake trout (Salvelinus namaycush) in the Canadian Arctic (2006-2008) |
title_short |
Growth characteristics and age at first migration of anadromous and resident Arctic char (Salvelinus alpinus) and lake trout (Salvelinus namaycush) in the Canadian Arctic (2006-2008) |
title_full |
Growth characteristics and age at first migration of anadromous and resident Arctic char (Salvelinus alpinus) and lake trout (Salvelinus namaycush) in the Canadian Arctic (2006-2008) |
title_fullStr |
Growth characteristics and age at first migration of anadromous and resident Arctic char (Salvelinus alpinus) and lake trout (Salvelinus namaycush) in the Canadian Arctic (2006-2008) |
title_full_unstemmed |
Growth characteristics and age at first migration of anadromous and resident Arctic char (Salvelinus alpinus) and lake trout (Salvelinus namaycush) in the Canadian Arctic (2006-2008) |
title_sort |
growth characteristics and age at first migration of anadromous and resident arctic char (salvelinus alpinus) and lake trout (salvelinus namaycush) in the canadian arctic (2006-2008) |
publisher |
PANGAEA |
publishDate |
2010 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.838933 https://doi.org/10.1594/PANGAEA.838933 |
op_coverage |
MEDIAN LATITUDE: 68.241263 * MEDIAN LONGITUDE: -107.193150 * SOUTH-BOUND LATITUDE: 68.060400 * WEST-BOUND LONGITUDE: -107.710000 * NORTH-BOUND LATITUDE: 68.370000 * EAST-BOUND LONGITUDE: -106.503000 |
long_lat |
ENVELOPE(-107.710000,-106.503000,68.370000,68.060400) |
genre |
Arctic International Polar Year Kitikmeot Nunavut Salvelinus alpinus |
genre_facet |
Arctic International Polar Year Kitikmeot Nunavut Salvelinus alpinus |
op_source |
Supplement to: Swanson, Heidi K; Kidd, Karen A; Babaluk, John A; Wastle, Rick J; Yang, Panseok P; Halden, Norman M; Reist, James D (2010): Anadromy in Arctic populations of lake trout (Salvelinus namaycush): otolith microchemistry, stable isotopes, and comparisons with Arctic char (Salvelinus alpinus). Canadian Journal of Fisheries and Aquatic Sciences, 67(5), 842-853, https://doi.org/10.1139/F10-022 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.838933 https://doi.org/10.1594/PANGAEA.838933 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.83893310.1139/F10-022 |
_version_ |
1810292185696829440 |