Morphometric and genetic analyses of two sympatric morphs of Arctic char ( Salvelinus alpinus ) in the Canadian High Arctic
Multivariate morphometric analyses were used to examine variation in head, body, and fin shape between two sympatric morphotypes of Arctic char ( Salvelinus alpinus (L., 1758)) from Lake Hazen, Ellesmere Island, Nunavut, Canada. Population structure of the Lake Hazen Arctic char was examined using f...
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2011
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crcansciencepubl:10.1139/z10-100 2023-12-17T10:24:29+01:00 Morphometric and genetic analyses of two sympatric morphs of Arctic char ( Salvelinus alpinus ) in the Canadian High Arctic Arbour, J. H. Hardie, D. C. Hutchings, J. A. 2011 http://dx.doi.org/10.1139/z10-100 http://www.nrcresearchpress.com/doi/full-xml/10.1139/Z10-100 http://www.nrcresearchpress.com/doi/pdf/10.1139/Z10-100 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 89, issue 1, page 19-30 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 2011 crcansciencepubl https://doi.org/10.1139/z10-100 2023-11-19T13:38:35Z Multivariate morphometric analyses were used to examine variation in head, body, and fin shape between two sympatric morphotypes of Arctic char ( Salvelinus alpinus (L., 1758)) from Lake Hazen, Ellesmere Island, Nunavut, Canada. Population structure of the Lake Hazen Arctic char was examined using five microsatellite loci. The “small” morph was found to have a larger (primarily deeper) head, larger and more elongate fins, and a deeper lateral profile than the “large” morph. The morphs also differed in allometric growth patterns. The large and small morphs do not appear to represent genetically distinct populations. The head morphology of the Lake Hazen small and large morphs exhibited similarities to benthic and pelagic morphs (respectively) from other lakes. We hypothesize that the large morph may be adapted to high-efficiency swimming and that the small morph may be adapted to low-efficiency, high-acceleration swimming. Such functional trade-offs are not uncommon among fish specializing in dispersed or mobile prey (fish and plankton) and benthic prey, respectively. The lack of apparent genetic differentiation between the morphs may suggest that the morphological differences result, to some extent, from phenotypic plasticity. Based on these results and previous analyses, it seems reasonable to conclude that Lake Hazen Arctic char represent a resource polymorphism. Article in Journal/Newspaper Arctic Ellesmere Island Lake Hazen Nunavut Salvelinus alpinus Canadian Science Publishing (via Crossref) Arctic Nunavut Ellesmere Island Canada Lake Hazen ENVELOPE(-71.017,-71.017,81.797,81.797) Canadian Journal of Zoology 89 1 19 30 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Arbour, J. H. Hardie, D. C. Hutchings, J. A. Morphometric and genetic analyses of two sympatric morphs of Arctic char ( Salvelinus alpinus ) in the Canadian High Arctic |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Multivariate morphometric analyses were used to examine variation in head, body, and fin shape between two sympatric morphotypes of Arctic char ( Salvelinus alpinus (L., 1758)) from Lake Hazen, Ellesmere Island, Nunavut, Canada. Population structure of the Lake Hazen Arctic char was examined using five microsatellite loci. The “small” morph was found to have a larger (primarily deeper) head, larger and more elongate fins, and a deeper lateral profile than the “large” morph. The morphs also differed in allometric growth patterns. The large and small morphs do not appear to represent genetically distinct populations. The head morphology of the Lake Hazen small and large morphs exhibited similarities to benthic and pelagic morphs (respectively) from other lakes. We hypothesize that the large morph may be adapted to high-efficiency swimming and that the small morph may be adapted to low-efficiency, high-acceleration swimming. Such functional trade-offs are not uncommon among fish specializing in dispersed or mobile prey (fish and plankton) and benthic prey, respectively. The lack of apparent genetic differentiation between the morphs may suggest that the morphological differences result, to some extent, from phenotypic plasticity. Based on these results and previous analyses, it seems reasonable to conclude that Lake Hazen Arctic char represent a resource polymorphism. |
format |
Article in Journal/Newspaper |
author |
Arbour, J. H. Hardie, D. C. Hutchings, J. A. |
author_facet |
Arbour, J. H. Hardie, D. C. Hutchings, J. A. |
author_sort |
Arbour, J. H. |
title |
Morphometric and genetic analyses of two sympatric morphs of Arctic char ( Salvelinus alpinus ) in the Canadian High Arctic |
title_short |
Morphometric and genetic analyses of two sympatric morphs of Arctic char ( Salvelinus alpinus ) in the Canadian High Arctic |
title_full |
Morphometric and genetic analyses of two sympatric morphs of Arctic char ( Salvelinus alpinus ) in the Canadian High Arctic |
title_fullStr |
Morphometric and genetic analyses of two sympatric morphs of Arctic char ( Salvelinus alpinus ) in the Canadian High Arctic |
title_full_unstemmed |
Morphometric and genetic analyses of two sympatric morphs of Arctic char ( Salvelinus alpinus ) in the Canadian High Arctic |
title_sort |
morphometric and genetic analyses of two sympatric morphs of arctic char ( salvelinus alpinus ) in the canadian high arctic |
publisher |
Canadian Science Publishing |
publishDate |
2011 |
url |
http://dx.doi.org/10.1139/z10-100 http://www.nrcresearchpress.com/doi/full-xml/10.1139/Z10-100 http://www.nrcresearchpress.com/doi/pdf/10.1139/Z10-100 |
long_lat |
ENVELOPE(-71.017,-71.017,81.797,81.797) |
geographic |
Arctic Nunavut Ellesmere Island Canada Lake Hazen |
geographic_facet |
Arctic Nunavut Ellesmere Island Canada Lake Hazen |
genre |
Arctic Ellesmere Island Lake Hazen Nunavut Salvelinus alpinus |
genre_facet |
Arctic Ellesmere Island Lake Hazen Nunavut Salvelinus alpinus |
op_source |
Canadian Journal of Zoology volume 89, issue 1, page 19-30 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z10-100 |
container_title |
Canadian Journal of Zoology |
container_volume |
89 |
container_issue |
1 |
container_start_page |
19 |
op_container_end_page |
30 |
_version_ |
1785566843874836480 |