(Table 2) Age determination of harp seals (Pagophilus groenlandicus) from the Barents Sea - comparison of methods
Lower jaws (containing the teeth), eyes, and skin samples were collected from harp seals (Pagophilus groenlandicus) in the southeastern Barents Sea for the purpose of comparing age estimates obtained by 3 different methods, the traditional technique of counting growth layer groups (GLGs) in teeth an...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.810152 2024-09-15T17:57:48+00:00 (Table 2) Age determination of harp seals (Pagophilus groenlandicus) from the Barents Sea - comparison of methods Garde, Eva Frie, Anne K Dunshea, Glenn Hansen, Steen H Kovacs, Kit Maureen Lydersen, Christian MEDIAN LATITUDE: 69.300000 * MEDIAN LONGITUDE: 42.875000 * SOUTH-BOUND LATITUDE: 68.400000 * WEST-BOUND LONGITUDE: 40.167000 * NORTH-BOUND LATITUDE: 70.200000 * EAST-BOUND LONGITUDE: 45.583000 * DATE/TIME START: 2006-04-09T00:00:00 * DATE/TIME END: 2006-04-24T00:00:00 2010 text/tab-separated-values, 527 data points https://doi.pangaea.de/10.1594/PANGAEA.810152 https://doi.org/10.1594/PANGAEA.810152 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.810152 https://doi.org/10.1594/PANGAEA.810152 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Garde, Eva; Frie, Anne K; Dunshea, Glenn; Hansen, Steen H; Kovacs, Kit Maureen; Lydersen, Christian (2010): Harp seal ageing techniques-teeth, aspartic acid racemization, and telomere sequence analysis. Journal of Mammalogy, 91(6), 1365-1374, https://doi.org/10.1644/10-MAMM-A-080.1 Ageing aspartic acid racemization (AAR) in eye lens nuclei counting growth layer groups (GLG) in teeth Aspartic acid D/L ratio Barents Sea BarentsSea_seal Biological sample BIOS International Polar Year (2007-2008) IPY Pagophilus groenlandicus age standard deviation Sample ID Sex dataset 2010 ftpangaea https://doi.org/10.1594/PANGAEA.81015210.1644/10-MAMM-A-080.1 2024-07-24T02:31:32Z Lower jaws (containing the teeth), eyes, and skin samples were collected from harp seals (Pagophilus groenlandicus) in the southeastern Barents Sea for the purpose of comparing age estimates obtained by 3 different methods, the traditional technique of counting growth layer groups (GLGs) in teeth and 2 novel approaches, aspartic acid racemization (AAR) in eye lens nuclei and telomere sequence analyses as a proxy for telomere length. A significant correlation between age estimates obtained using GLGs and AAR was found, whereas no correlation was found between GLGs and telomere length. An AAR rate (k Asp) of 0.00130/year ± 0.00005 SE and a D-enantiomer to L-enantiomer ratio at birth (D/L 0 value) of 0.01933 ± 0.00048 SE were estimated by regression of D/L ratios against GLG ages from 25 animals (12 selected teeth that had high readability and 13 known-aged animals). AAR could prove to be useful, particularly for ageing older animals in species such as harp seals where difficulties in counting GLGs tend to increase with age. Age estimation by telomere length did not show any correlation with GLG ages and is not recommended for harp seals. Dataset Barents Sea International Polar Year IPY Pagophilus groenlandicus PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(40.167000,45.583000,70.200000,68.400000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Ageing aspartic acid racemization (AAR) in eye lens nuclei counting growth layer groups (GLG) in teeth Aspartic acid D/L ratio Barents Sea BarentsSea_seal Biological sample BIOS International Polar Year (2007-2008) IPY Pagophilus groenlandicus age standard deviation Sample ID Sex |
spellingShingle |
Ageing aspartic acid racemization (AAR) in eye lens nuclei counting growth layer groups (GLG) in teeth Aspartic acid D/L ratio Barents Sea BarentsSea_seal Biological sample BIOS International Polar Year (2007-2008) IPY Pagophilus groenlandicus age standard deviation Sample ID Sex Garde, Eva Frie, Anne K Dunshea, Glenn Hansen, Steen H Kovacs, Kit Maureen Lydersen, Christian (Table 2) Age determination of harp seals (Pagophilus groenlandicus) from the Barents Sea - comparison of methods |
topic_facet |
Ageing aspartic acid racemization (AAR) in eye lens nuclei counting growth layer groups (GLG) in teeth Aspartic acid D/L ratio Barents Sea BarentsSea_seal Biological sample BIOS International Polar Year (2007-2008) IPY Pagophilus groenlandicus age standard deviation Sample ID Sex |
description |
Lower jaws (containing the teeth), eyes, and skin samples were collected from harp seals (Pagophilus groenlandicus) in the southeastern Barents Sea for the purpose of comparing age estimates obtained by 3 different methods, the traditional technique of counting growth layer groups (GLGs) in teeth and 2 novel approaches, aspartic acid racemization (AAR) in eye lens nuclei and telomere sequence analyses as a proxy for telomere length. A significant correlation between age estimates obtained using GLGs and AAR was found, whereas no correlation was found between GLGs and telomere length. An AAR rate (k Asp) of 0.00130/year ± 0.00005 SE and a D-enantiomer to L-enantiomer ratio at birth (D/L 0 value) of 0.01933 ± 0.00048 SE were estimated by regression of D/L ratios against GLG ages from 25 animals (12 selected teeth that had high readability and 13 known-aged animals). AAR could prove to be useful, particularly for ageing older animals in species such as harp seals where difficulties in counting GLGs tend to increase with age. Age estimation by telomere length did not show any correlation with GLG ages and is not recommended for harp seals. |
format |
Dataset |
author |
Garde, Eva Frie, Anne K Dunshea, Glenn Hansen, Steen H Kovacs, Kit Maureen Lydersen, Christian |
author_facet |
Garde, Eva Frie, Anne K Dunshea, Glenn Hansen, Steen H Kovacs, Kit Maureen Lydersen, Christian |
author_sort |
Garde, Eva |
title |
(Table 2) Age determination of harp seals (Pagophilus groenlandicus) from the Barents Sea - comparison of methods |
title_short |
(Table 2) Age determination of harp seals (Pagophilus groenlandicus) from the Barents Sea - comparison of methods |
title_full |
(Table 2) Age determination of harp seals (Pagophilus groenlandicus) from the Barents Sea - comparison of methods |
title_fullStr |
(Table 2) Age determination of harp seals (Pagophilus groenlandicus) from the Barents Sea - comparison of methods |
title_full_unstemmed |
(Table 2) Age determination of harp seals (Pagophilus groenlandicus) from the Barents Sea - comparison of methods |
title_sort |
(table 2) age determination of harp seals (pagophilus groenlandicus) from the barents sea - comparison of methods |
publisher |
PANGAEA |
publishDate |
2010 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.810152 https://doi.org/10.1594/PANGAEA.810152 |
op_coverage |
MEDIAN LATITUDE: 69.300000 * MEDIAN LONGITUDE: 42.875000 * SOUTH-BOUND LATITUDE: 68.400000 * WEST-BOUND LONGITUDE: 40.167000 * NORTH-BOUND LATITUDE: 70.200000 * EAST-BOUND LONGITUDE: 45.583000 * DATE/TIME START: 2006-04-09T00:00:00 * DATE/TIME END: 2006-04-24T00:00:00 |
long_lat |
ENVELOPE(40.167000,45.583000,70.200000,68.400000) |
genre |
Barents Sea International Polar Year IPY Pagophilus groenlandicus |
genre_facet |
Barents Sea International Polar Year IPY Pagophilus groenlandicus |
op_source |
Supplement to: Garde, Eva; Frie, Anne K; Dunshea, Glenn; Hansen, Steen H; Kovacs, Kit Maureen; Lydersen, Christian (2010): Harp seal ageing techniques-teeth, aspartic acid racemization, and telomere sequence analysis. Journal of Mammalogy, 91(6), 1365-1374, https://doi.org/10.1644/10-MAMM-A-080.1 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.810152 https://doi.org/10.1594/PANGAEA.810152 |
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.81015210.1644/10-MAMM-A-080.1 |
_version_ |
1810434002942689280 |