Isotopic evidence of limited exchange between Mediterranean and eastern North Atlantic fin whales
RATIONALE The relationship between stocks of fin whales inhabiting the temperate eastern North Atlantic and the Mediterranean Sea is subject to controversy. The use of chemical markers facilitates an alternative insight into population structure and potential borders between stocks because the two a...
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ftcsic:oai:digital.csic.es:10261/80388 2024-02-11T10:06:09+01:00 Isotopic evidence of limited exchange between Mediterranean and eastern North Atlantic fin whales Giménez, Joan Gómez-Campos, Encarna Borrell, Asunción Cardona, Luis Aguilar, Alex 2013 http://hdl.handle.net/10261/80388 https://doi.org/10.1002/rcm.6633 en eng John Wiley & Sons doi:10.1002/rcm.6633 issn: 0951-4198 Rapid Communications in Mass Spectrometry 27: 1801- 1806 (2013) http://hdl.handle.net/10261/80388 open artículo http://purl.org/coar/resource_type/c_6501 2013 ftcsic https://doi.org/10.1002/rcm.6633 2024-01-16T09:51:17Z RATIONALE The relationship between stocks of fin whales inhabiting the temperate eastern North Atlantic and the Mediterranean Sea is subject to controversy. The use of chemical markers facilitates an alternative insight into population structure and potential borders between stocks because the two areas present dissimilar isotopic baselines. METHODS Baleen plates, composed of inert tissue that keeps a permanent chronological record of the isotopic value of body circulating fluids, were used to investigate connectivity and boundaries between the stocks. Values were determined by continuous flow isotope ratio mass spectrometry. RESULTS Stable isotopes confirm that, while the two subpopulations generally forage in well-differentiated grounds, some individuals with characteristic Atlantic values do penetrate into the Mediterranean Sea up to the northernmost latitudes of the region. As a consequence, the border between the two putative subpopulations may be not as definite as previous acoustic investigations suggested. The discriminant function obtained in this study may assist researchers to use baleen plate isotopic data to assign the origin of fin whales of uncertain provenance. CONCLUSIONS This study strengthens the stock subdivision currently accepted for management and conservation while recognizes a low level of exchange between the Mediterranean and temperate eastern North Atlantic subdivisions. Copyright © 2013 John Wiley & Sons, Ltd. Peer Reviewed Article in Journal/Newspaper North Atlantic Digital.CSIC (Spanish National Research Council) Rapid Communications in Mass Spectrometry 27 15 1801 1806 |
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Digital.CSIC (Spanish National Research Council) |
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English |
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RATIONALE The relationship between stocks of fin whales inhabiting the temperate eastern North Atlantic and the Mediterranean Sea is subject to controversy. The use of chemical markers facilitates an alternative insight into population structure and potential borders between stocks because the two areas present dissimilar isotopic baselines. METHODS Baleen plates, composed of inert tissue that keeps a permanent chronological record of the isotopic value of body circulating fluids, were used to investigate connectivity and boundaries between the stocks. Values were determined by continuous flow isotope ratio mass spectrometry. RESULTS Stable isotopes confirm that, while the two subpopulations generally forage in well-differentiated grounds, some individuals with characteristic Atlantic values do penetrate into the Mediterranean Sea up to the northernmost latitudes of the region. As a consequence, the border between the two putative subpopulations may be not as definite as previous acoustic investigations suggested. The discriminant function obtained in this study may assist researchers to use baleen plate isotopic data to assign the origin of fin whales of uncertain provenance. CONCLUSIONS This study strengthens the stock subdivision currently accepted for management and conservation while recognizes a low level of exchange between the Mediterranean and temperate eastern North Atlantic subdivisions. Copyright © 2013 John Wiley & Sons, Ltd. Peer Reviewed |
format |
Article in Journal/Newspaper |
author |
Giménez, Joan Gómez-Campos, Encarna Borrell, Asunción Cardona, Luis Aguilar, Alex |
spellingShingle |
Giménez, Joan Gómez-Campos, Encarna Borrell, Asunción Cardona, Luis Aguilar, Alex Isotopic evidence of limited exchange between Mediterranean and eastern North Atlantic fin whales |
author_facet |
Giménez, Joan Gómez-Campos, Encarna Borrell, Asunción Cardona, Luis Aguilar, Alex |
author_sort |
Giménez, Joan |
title |
Isotopic evidence of limited exchange between Mediterranean and eastern North Atlantic fin whales |
title_short |
Isotopic evidence of limited exchange between Mediterranean and eastern North Atlantic fin whales |
title_full |
Isotopic evidence of limited exchange between Mediterranean and eastern North Atlantic fin whales |
title_fullStr |
Isotopic evidence of limited exchange between Mediterranean and eastern North Atlantic fin whales |
title_full_unstemmed |
Isotopic evidence of limited exchange between Mediterranean and eastern North Atlantic fin whales |
title_sort |
isotopic evidence of limited exchange between mediterranean and eastern north atlantic fin whales |
publisher |
John Wiley & Sons |
publishDate |
2013 |
url |
http://hdl.handle.net/10261/80388 https://doi.org/10.1002/rcm.6633 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
doi:10.1002/rcm.6633 issn: 0951-4198 Rapid Communications in Mass Spectrometry 27: 1801- 1806 (2013) http://hdl.handle.net/10261/80388 |
op_rights |
open |
op_doi |
https://doi.org/10.1002/rcm.6633 |
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Rapid Communications in Mass Spectrometry |
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27 |
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15 |
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1790603667794034688 |