Ecological niche specialization inferred from morphological variation and otolith strontium of Arctic charr Salvelinus alpinus L. found within open lake systems of southern Baffin Island, Nunavut, Canada
The presence of two morphotypes of Arctic charr Salvelinus alpinus was confirmed via morphological variation and otolith strontium (Sr) within three open‐lake systems of southern Baffin Island, Nunavut, Canada: Qinngu (LH001), Iqalugaarjuit Lake (PG082) and Qasigiat (PG015). Analysis of otolith Sr i...
Published in: | Journal of Fish Biology |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2009
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1111/j.1095-8649.2009.02394.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.2009.02394.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.2009.02394.x |
id |
crwiley:10.1111/j.1095-8649.2009.02394.x |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1111/j.1095-8649.2009.02394.x 2024-06-02T08:00:05+00:00 Ecological niche specialization inferred from morphological variation and otolith strontium of Arctic charr Salvelinus alpinus L. found within open lake systems of southern Baffin Island, Nunavut, Canada Loewen, T. N. Gillis, D. Tallman, R. F. 2009 http://dx.doi.org/10.1111/j.1095-8649.2009.02394.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.2009.02394.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.2009.02394.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 75, issue 6, page 1473-1495 ISSN 0022-1112 1095-8649 journal-article 2009 crwiley https://doi.org/10.1111/j.1095-8649.2009.02394.x 2024-05-03T10:57:12Z The presence of two morphotypes of Arctic charr Salvelinus alpinus was confirmed via morphological variation and otolith strontium (Sr) within three open‐lake systems of southern Baffin Island, Nunavut, Canada: Qinngu (LH001), Iqalugaarjuit Lake (PG082) and Qasigiat (PG015). Analysis of otolith Sr indicates that a component of each S. alpinus population within lakes LH001 and PG082 is migratory (large–maturing S. alpinus ), whereas another component is lake‐resident (small–maturing S. alpinus ). Alternatively, small and large maturing S. alpinus may both inhabit tidal habitats during their lifetime in lake PG015. Three morphological characters were identified by principal factor analysis (PFA) as characters that were different between maturity groups for all lakes studied: eye diameter, pectoral fin length and pelvic fin length. As well, upper jaw length (LH001 and PG082) and fork depth (PG015) were identified in PFA as traits that differed between morphs. Univariate tests of morphological characters identified by PFA demonstrated maturity group differences with the exception of eye diameter in Lake PG015 and upper jaw length and pelvic fin length in lake LH001. No difference was found in the MANOVA test of upper and lower gill raker number between small–maturing and undeveloped fish within all lakes studied. Clear morphological variation observed between small–maturing and undeveloped fish in all three lakes of the study suggests ecological niche separation between morphotypes. This is the first documented case of lake‐resident S. alpinus use of the tidal habitat in the presence of a migratory large–maturing morphotype. Article in Journal/Newspaper Arctic charr Arctic Baffin Island Baffin Nunavut Salvelinus alpinus Wiley Online Library Arctic Baffin Island Canada Nunavut Journal of Fish Biology 75 6 1473 1495 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
The presence of two morphotypes of Arctic charr Salvelinus alpinus was confirmed via morphological variation and otolith strontium (Sr) within three open‐lake systems of southern Baffin Island, Nunavut, Canada: Qinngu (LH001), Iqalugaarjuit Lake (PG082) and Qasigiat (PG015). Analysis of otolith Sr indicates that a component of each S. alpinus population within lakes LH001 and PG082 is migratory (large–maturing S. alpinus ), whereas another component is lake‐resident (small–maturing S. alpinus ). Alternatively, small and large maturing S. alpinus may both inhabit tidal habitats during their lifetime in lake PG015. Three morphological characters were identified by principal factor analysis (PFA) as characters that were different between maturity groups for all lakes studied: eye diameter, pectoral fin length and pelvic fin length. As well, upper jaw length (LH001 and PG082) and fork depth (PG015) were identified in PFA as traits that differed between morphs. Univariate tests of morphological characters identified by PFA demonstrated maturity group differences with the exception of eye diameter in Lake PG015 and upper jaw length and pelvic fin length in lake LH001. No difference was found in the MANOVA test of upper and lower gill raker number between small–maturing and undeveloped fish within all lakes studied. Clear morphological variation observed between small–maturing and undeveloped fish in all three lakes of the study suggests ecological niche separation between morphotypes. This is the first documented case of lake‐resident S. alpinus use of the tidal habitat in the presence of a migratory large–maturing morphotype. |
format |
Article in Journal/Newspaper |
author |
Loewen, T. N. Gillis, D. Tallman, R. F. |
spellingShingle |
Loewen, T. N. Gillis, D. Tallman, R. F. Ecological niche specialization inferred from morphological variation and otolith strontium of Arctic charr Salvelinus alpinus L. found within open lake systems of southern Baffin Island, Nunavut, Canada |
author_facet |
Loewen, T. N. Gillis, D. Tallman, R. F. |
author_sort |
Loewen, T. N. |
title |
Ecological niche specialization inferred from morphological variation and otolith strontium of Arctic charr Salvelinus alpinus L. found within open lake systems of southern Baffin Island, Nunavut, Canada |
title_short |
Ecological niche specialization inferred from morphological variation and otolith strontium of Arctic charr Salvelinus alpinus L. found within open lake systems of southern Baffin Island, Nunavut, Canada |
title_full |
Ecological niche specialization inferred from morphological variation and otolith strontium of Arctic charr Salvelinus alpinus L. found within open lake systems of southern Baffin Island, Nunavut, Canada |
title_fullStr |
Ecological niche specialization inferred from morphological variation and otolith strontium of Arctic charr Salvelinus alpinus L. found within open lake systems of southern Baffin Island, Nunavut, Canada |
title_full_unstemmed |
Ecological niche specialization inferred from morphological variation and otolith strontium of Arctic charr Salvelinus alpinus L. found within open lake systems of southern Baffin Island, Nunavut, Canada |
title_sort |
ecological niche specialization inferred from morphological variation and otolith strontium of arctic charr salvelinus alpinus l. found within open lake systems of southern baffin island, nunavut, canada |
publisher |
Wiley |
publishDate |
2009 |
url |
http://dx.doi.org/10.1111/j.1095-8649.2009.02394.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.2009.02394.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.2009.02394.x |
geographic |
Arctic Baffin Island Canada Nunavut |
geographic_facet |
Arctic Baffin Island Canada Nunavut |
genre |
Arctic charr Arctic Baffin Island Baffin Nunavut Salvelinus alpinus |
genre_facet |
Arctic charr Arctic Baffin Island Baffin Nunavut Salvelinus alpinus |
op_source |
Journal of Fish Biology volume 75, issue 6, page 1473-1495 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1095-8649.2009.02394.x |
container_title |
Journal of Fish Biology |
container_volume |
75 |
container_issue |
6 |
container_start_page |
1473 |
op_container_end_page |
1495 |
_version_ |
1800744103017709568 |