Trace element and stable isotope analysis elucidate stock structure in a narwhal ( Monodon monoceros ) population with no genetic substructure
Chemical composition of tissues can act as a biological tag to discriminate among groups of animals that inhabit different areas. In Canada, subsistence hunting of the Baffin Bay narwhal (Monodon monoceros Linnaeus, 1758) population is managed as stocks represented by summer aggregations. However, n...
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crcansciencepubl:10.1139/cjz-2018-0307 2023-12-17T10:26:12+01:00 Trace element and stable isotope analysis elucidate stock structure in a narwhal ( Monodon monoceros ) population with no genetic substructure Watt, Cortney A. Hornby, Claire Ferguson, Steven H. 2019 http://dx.doi.org/10.1139/cjz-2018-0307 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjz-2018-0307 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjz-2018-0307 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 97, issue 11, page 1084-1091 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 2019 crcansciencepubl https://doi.org/10.1139/cjz-2018-0307 2023-11-19T13:38:58Z Chemical composition of tissues can act as a biological tag to discriminate among groups of animals that inhabit different areas. In Canada, subsistence hunting of the Baffin Bay narwhal (Monodon monoceros Linnaeus, 1758) population is managed as stocks represented by summer aggregations. However, narwhals are highly mobile and are hunted during the migration while stocks mix. Thus, information that can help managers decipher the stock origin of hunted individuals to prevent overexploitation of animals adapted to particular summering grounds is needed. Stable isotope and trace element analyses were conducted on narwhal skin tissues from five stocks in the eastern Canadian Arctic from 1990 to 2015. Discriminant analysis showed a significant difference between Admiralty Inlet and Eclipse Sound stocks in the summer residency period and both differed from Jones Sound and Somerset Island. During the migration season, there was more overlap and less distinction among stocks, but 75% of animals were classified correctly to their defined stocks in both periods. Together stable isotope and trace element analyses are useful for delineating stocks and could be used to complement other stock discrimination approaches. Article in Journal/Newspaper Arctic Baffin Bay Baffin Bay Baffin Eclipse Sound Jones Sound Monodon monoceros narwhal* Somerset Island Canadian Science Publishing (via Crossref) Arctic Baffin Bay Canada Somerset Island ENVELOPE(-93.500,-93.500,73.251,73.251) Jones Sound ENVELOPE(-86.000,-86.000,76.002,76.002) Eclipse Sound ENVELOPE(-78.998,-78.998,72.635,72.635) Admiralty Inlet ENVELOPE(-86.000,-86.000,72.501,72.501) Canadian Journal of Zoology 97 11 1084 1091 |
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 Watt, Cortney A. Hornby, Claire Ferguson, Steven H. Trace element and stable isotope analysis elucidate stock structure in a narwhal ( Monodon monoceros ) population with no genetic substructure |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Chemical composition of tissues can act as a biological tag to discriminate among groups of animals that inhabit different areas. In Canada, subsistence hunting of the Baffin Bay narwhal (Monodon monoceros Linnaeus, 1758) population is managed as stocks represented by summer aggregations. However, narwhals are highly mobile and are hunted during the migration while stocks mix. Thus, information that can help managers decipher the stock origin of hunted individuals to prevent overexploitation of animals adapted to particular summering grounds is needed. Stable isotope and trace element analyses were conducted on narwhal skin tissues from five stocks in the eastern Canadian Arctic from 1990 to 2015. Discriminant analysis showed a significant difference between Admiralty Inlet and Eclipse Sound stocks in the summer residency period and both differed from Jones Sound and Somerset Island. During the migration season, there was more overlap and less distinction among stocks, but 75% of animals were classified correctly to their defined stocks in both periods. Together stable isotope and trace element analyses are useful for delineating stocks and could be used to complement other stock discrimination approaches. |
format |
Article in Journal/Newspaper |
author |
Watt, Cortney A. Hornby, Claire Ferguson, Steven H. |
author_facet |
Watt, Cortney A. Hornby, Claire Ferguson, Steven H. |
author_sort |
Watt, Cortney A. |
title |
Trace element and stable isotope analysis elucidate stock structure in a narwhal ( Monodon monoceros ) population with no genetic substructure |
title_short |
Trace element and stable isotope analysis elucidate stock structure in a narwhal ( Monodon monoceros ) population with no genetic substructure |
title_full |
Trace element and stable isotope analysis elucidate stock structure in a narwhal ( Monodon monoceros ) population with no genetic substructure |
title_fullStr |
Trace element and stable isotope analysis elucidate stock structure in a narwhal ( Monodon monoceros ) population with no genetic substructure |
title_full_unstemmed |
Trace element and stable isotope analysis elucidate stock structure in a narwhal ( Monodon monoceros ) population with no genetic substructure |
title_sort |
trace element and stable isotope analysis elucidate stock structure in a narwhal ( monodon monoceros ) population with no genetic substructure |
publisher |
Canadian Science Publishing |
publishDate |
2019 |
url |
http://dx.doi.org/10.1139/cjz-2018-0307 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjz-2018-0307 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjz-2018-0307 |
long_lat |
ENVELOPE(-93.500,-93.500,73.251,73.251) ENVELOPE(-86.000,-86.000,76.002,76.002) ENVELOPE(-78.998,-78.998,72.635,72.635) ENVELOPE(-86.000,-86.000,72.501,72.501) |
geographic |
Arctic Baffin Bay Canada Somerset Island Jones Sound Eclipse Sound Admiralty Inlet |
geographic_facet |
Arctic Baffin Bay Canada Somerset Island Jones Sound Eclipse Sound Admiralty Inlet |
genre |
Arctic Baffin Bay Baffin Bay Baffin Eclipse Sound Jones Sound Monodon monoceros narwhal* Somerset Island |
genre_facet |
Arctic Baffin Bay Baffin Bay Baffin Eclipse Sound Jones Sound Monodon monoceros narwhal* Somerset Island |
op_source |
Canadian Journal of Zoology volume 97, issue 11, page 1084-1091 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cjz-2018-0307 |
container_title |
Canadian Journal of Zoology |
container_volume |
97 |
container_issue |
11 |
container_start_page |
1084 |
op_container_end_page |
1091 |
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1785577919082397696 |