Summer stream habitat preferences of Nunavik anadromous Arctic char ( Salvelinus alpinus) fry and parr
Arctic char (Salvelinus alpinus) is a fish species known to occupy diverse habitats within the Arctic region. However, summer habitat use during the juvenile stage of the anadromous form is largely unknown. The present study aims to characterize fry and parr summer habitat preferences. Surveys were...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Language: | English |
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Canadian Science Publishing
2022
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Online Access: | http://dx.doi.org/10.1139/cjfas-2021-0119 https://cdnsciencepub.com/doi/full-xml/10.1139/cjfas-2021-0119 https://cdnsciencepub.com/doi/pdf/10.1139/cjfas-2021-0119 |
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crcansciencepubl:10.1139/cjfas-2021-0119 2024-09-15T18:33:06+00:00 Summer stream habitat preferences of Nunavik anadromous Arctic char ( Salvelinus alpinus) fry and parr Dubos, Véronique St-Hilaire, André Bergeron, Normand E. 2022 http://dx.doi.org/10.1139/cjfas-2021-0119 https://cdnsciencepub.com/doi/full-xml/10.1139/cjfas-2021-0119 https://cdnsciencepub.com/doi/pdf/10.1139/cjfas-2021-0119 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 79, issue 7, page 1074-1085 ISSN 0706-652X 1205-7533 journal-article 2022 crcansciencepubl https://doi.org/10.1139/cjfas-2021-0119 2024-07-04T04:10:01Z Arctic char (Salvelinus alpinus) is a fish species known to occupy diverse habitats within the Arctic region. However, summer habitat use during the juvenile stage of the anadromous form is largely unknown. The present study aims to characterize fry and parr summer habitat preferences. Surveys were conducted by electrofishing, associated with physical habitat characterization on several rivers of the Ungava Bay, Nunavik, Canada. At the microhabitat and station scales (group of microhabitats), fry showed significant habitat preferences for shallow water and slow velocity. At the mesohabitat scale, fry showed a significant habitat selectivity for riffles. This habitat selectivity implies that habitat models can be built to evaluate the potential of habitat suitability for Arctic char fry. However, no significant habitat selectivity was found for parr. Parr size was nonetheless positively correlated with velocity, which was found to be a limitative factor for juvenile habitat use. This first attempt at modeling juvenile anadromous Arctic char habitat in rivers emphasizes the importance of selecting an appropriate spatial scale and reiterates the fact that parr showed relatively high plasticity in stream habitat selection. Article in Journal/Newspaper Salvelinus alpinus Ungava Bay Nunavik Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
Arctic char (Salvelinus alpinus) is a fish species known to occupy diverse habitats within the Arctic region. However, summer habitat use during the juvenile stage of the anadromous form is largely unknown. The present study aims to characterize fry and parr summer habitat preferences. Surveys were conducted by electrofishing, associated with physical habitat characterization on several rivers of the Ungava Bay, Nunavik, Canada. At the microhabitat and station scales (group of microhabitats), fry showed significant habitat preferences for shallow water and slow velocity. At the mesohabitat scale, fry showed a significant habitat selectivity for riffles. This habitat selectivity implies that habitat models can be built to evaluate the potential of habitat suitability for Arctic char fry. However, no significant habitat selectivity was found for parr. Parr size was nonetheless positively correlated with velocity, which was found to be a limitative factor for juvenile habitat use. This first attempt at modeling juvenile anadromous Arctic char habitat in rivers emphasizes the importance of selecting an appropriate spatial scale and reiterates the fact that parr showed relatively high plasticity in stream habitat selection. |
format |
Article in Journal/Newspaper |
author |
Dubos, Véronique St-Hilaire, André Bergeron, Normand E. |
spellingShingle |
Dubos, Véronique St-Hilaire, André Bergeron, Normand E. Summer stream habitat preferences of Nunavik anadromous Arctic char ( Salvelinus alpinus) fry and parr |
author_facet |
Dubos, Véronique St-Hilaire, André Bergeron, Normand E. |
author_sort |
Dubos, Véronique |
title |
Summer stream habitat preferences of Nunavik anadromous Arctic char ( Salvelinus alpinus) fry and parr |
title_short |
Summer stream habitat preferences of Nunavik anadromous Arctic char ( Salvelinus alpinus) fry and parr |
title_full |
Summer stream habitat preferences of Nunavik anadromous Arctic char ( Salvelinus alpinus) fry and parr |
title_fullStr |
Summer stream habitat preferences of Nunavik anadromous Arctic char ( Salvelinus alpinus) fry and parr |
title_full_unstemmed |
Summer stream habitat preferences of Nunavik anadromous Arctic char ( Salvelinus alpinus) fry and parr |
title_sort |
summer stream habitat preferences of nunavik anadromous arctic char ( salvelinus alpinus) fry and parr |
publisher |
Canadian Science Publishing |
publishDate |
2022 |
url |
http://dx.doi.org/10.1139/cjfas-2021-0119 https://cdnsciencepub.com/doi/full-xml/10.1139/cjfas-2021-0119 https://cdnsciencepub.com/doi/pdf/10.1139/cjfas-2021-0119 |
genre |
Salvelinus alpinus Ungava Bay Nunavik |
genre_facet |
Salvelinus alpinus Ungava Bay Nunavik |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 79, issue 7, page 1074-1085 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cjfas-2021-0119 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
_version_ |
1810474841225035776 |