Size, age and spawning frequency of landlocked Arctic charr Salvelinus alpinus (L.) in Svartvatnet, Svalbard
This contribution reports the analysis of a sample of landlocked Arctic charr collected with gillnets in Svartvatnet, Svalbard, 1964. This is the first scientific sample from a landlocked charr population from Svalbard. We found a very prominent modal group of large, old and sexually adult fish of b...
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Language: | English |
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Norwegian Polar Institute
1997
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Online Access: | https://polarresearch.net/index.php/polar/article/view/1910 https://doi.org/10.3402/polar.v16i2.6627 |
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ftjpolarres:oai:journals.openacademia.net:article/1910 2023-05-15T14:30:03+02:00 Size, age and spawning frequency of landlocked Arctic charr Salvelinus alpinus (L.) in Svartvatnet, Svalbard Gullestad, Nils Klemetsen, Anders 1997-01-12 application/pdf https://polarresearch.net/index.php/polar/article/view/1910 https://doi.org/10.3402/polar.v16i2.6627 eng eng Norwegian Polar Institute https://polarresearch.net/index.php/polar/article/view/1910/5159 https://polarresearch.net/index.php/polar/article/view/1910 doi:10.3402/polar.v16i2.6627 Copyright (c) 2018 Polar Research Polar Research; Vol. 16 No. 2 (1997); 85-92 1751-8369 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 1997 ftjpolarres https://doi.org/10.3402/polar.v16i2.6627 2021-11-11T19:11:42Z This contribution reports the analysis of a sample of landlocked Arctic charr collected with gillnets in Svartvatnet, Svalbard, 1964. This is the first scientific sample from a landlocked charr population from Svalbard. We found a very prominent modal group of large, old and sexually adult fish of both sexes. Their length ranged from 15 to 62 cm, but 92% of the fish were longer than 40 cm and 62% of them fell in the 45 to 54 cm interval. The age range was 7 to 31 years, but 93% were 14 years or older and represented 18 year-classes. The length-at-age of the charr seemed to increase steadily until they reached the size and age of the modal group. The growth rate decreased sharply after that. The mortality rates within the age span of the modal group seemed to be low. The ages at first spawning for most of the charr in the sample were between 7 and 9 years and spawning cycles of two years were indicated. Article in Journal/Newspaper Arctic charr Arctic Polar Research Salvelinus alpinus Svalbard Polar Research (E-Journal) Arctic Svalbard Svartvatnet ENVELOPE(13.647,13.647,65.587,65.587) Polar Research 16 2 85 92 |
institution |
Open Polar |
collection |
Polar Research (E-Journal) |
op_collection_id |
ftjpolarres |
language |
English |
description |
This contribution reports the analysis of a sample of landlocked Arctic charr collected with gillnets in Svartvatnet, Svalbard, 1964. This is the first scientific sample from a landlocked charr population from Svalbard. We found a very prominent modal group of large, old and sexually adult fish of both sexes. Their length ranged from 15 to 62 cm, but 92% of the fish were longer than 40 cm and 62% of them fell in the 45 to 54 cm interval. The age range was 7 to 31 years, but 93% were 14 years or older and represented 18 year-classes. The length-at-age of the charr seemed to increase steadily until they reached the size and age of the modal group. The growth rate decreased sharply after that. The mortality rates within the age span of the modal group seemed to be low. The ages at first spawning for most of the charr in the sample were between 7 and 9 years and spawning cycles of two years were indicated. |
format |
Article in Journal/Newspaper |
author |
Gullestad, Nils Klemetsen, Anders |
spellingShingle |
Gullestad, Nils Klemetsen, Anders Size, age and spawning frequency of landlocked Arctic charr Salvelinus alpinus (L.) in Svartvatnet, Svalbard |
author_facet |
Gullestad, Nils Klemetsen, Anders |
author_sort |
Gullestad, Nils |
title |
Size, age and spawning frequency of landlocked Arctic charr Salvelinus alpinus (L.) in Svartvatnet, Svalbard |
title_short |
Size, age and spawning frequency of landlocked Arctic charr Salvelinus alpinus (L.) in Svartvatnet, Svalbard |
title_full |
Size, age and spawning frequency of landlocked Arctic charr Salvelinus alpinus (L.) in Svartvatnet, Svalbard |
title_fullStr |
Size, age and spawning frequency of landlocked Arctic charr Salvelinus alpinus (L.) in Svartvatnet, Svalbard |
title_full_unstemmed |
Size, age and spawning frequency of landlocked Arctic charr Salvelinus alpinus (L.) in Svartvatnet, Svalbard |
title_sort |
size, age and spawning frequency of landlocked arctic charr salvelinus alpinus (l.) in svartvatnet, svalbard |
publisher |
Norwegian Polar Institute |
publishDate |
1997 |
url |
https://polarresearch.net/index.php/polar/article/view/1910 https://doi.org/10.3402/polar.v16i2.6627 |
long_lat |
ENVELOPE(13.647,13.647,65.587,65.587) |
geographic |
Arctic Svalbard Svartvatnet |
geographic_facet |
Arctic Svalbard Svartvatnet |
genre |
Arctic charr Arctic Polar Research Salvelinus alpinus Svalbard |
genre_facet |
Arctic charr Arctic Polar Research Salvelinus alpinus Svalbard |
op_source |
Polar Research; Vol. 16 No. 2 (1997); 85-92 1751-8369 |
op_relation |
https://polarresearch.net/index.php/polar/article/view/1910/5159 https://polarresearch.net/index.php/polar/article/view/1910 doi:10.3402/polar.v16i2.6627 |
op_rights |
Copyright (c) 2018 Polar Research |
op_doi |
https://doi.org/10.3402/polar.v16i2.6627 |
container_title |
Polar Research |
container_volume |
16 |
container_issue |
2 |
container_start_page |
85 |
op_container_end_page |
92 |
_version_ |
1766303978492002304 |