Isotopic niches of Fin Whales from the Mediterranean Sea and the Celtic sea (North Atlantic)
peer reviewed The fin whale (Balaenoptera physalus) is the most abundant and widespread mysticete species in the Mediterranean Sea, found mostly over deep, offshore waters of the western and central portion of the region. In the Mediterranean, this species is known to feed mainly on krill, in contra...
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Online Access: | https://orbi.uliege.be/handle/2268/208463 https://orbi.uliege.be/bitstream/2268/208463/1/2017%20MER%20127%20p75.pdf https://doi.org/10.1016/j.marenvres.2017.03.009 |
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ftorbi:oai:orbi.ulg.ac.be:2268/208463 2024-04-21T07:57:53+00:00 Isotopic niches of Fin Whales from the Mediterranean Sea and the Celtic sea (North Atlantic) Das, Krishna Holleville, Ophélie Ryan, Conor Berrow, Simon Gilles, Anita Ody, Denis Michel, Loïc MARE - Centre Interfacultaire de Recherches en Océanologie - ULiège 2017 https://orbi.uliege.be/handle/2268/208463 https://orbi.uliege.be/bitstream/2268/208463/1/2017%20MER%20127%20p75.pdf https://doi.org/10.1016/j.marenvres.2017.03.009 en eng Elsevier https://dx.doi.org/10.1016/j.marenvres.2017.03.009 urn:issn:0141-1136 https://orbi.uliege.be/handle/2268/208463 info:hdl:2268/208463 https://orbi.uliege.be/bitstream/2268/208463/1/2017%20MER%20127%20p75.pdf doi:10.1016/j.marenvres.2017.03.009 scopus-id:2-s2.0-85017151073 info:pmid:28390660 open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess Marine Environmental Research, 127, 75-83 (2017) marine mammals stable isotopes SIBER baleen whales Balaenoptera physalus conservation Life sciences Environmental sciences & ecology Aquatic sciences & oceanology Sciences du vivant Sciences de l’environnement & écologie Sciences aquatiques & océanologie journal article http://purl.org/coar/resource_type/c_6501 info:eu-repo/semantics/article peer reviewed 2017 ftorbi https://doi.org/10.1016/j.marenvres.2017.03.009 2024-03-27T14:57:48Z peer reviewed The fin whale (Balaenoptera physalus) is the most abundant and widespread mysticete species in the Mediterranean Sea, found mostly over deep, offshore waters of the western and central portion of the region. In the Mediterranean, this species is known to feed mainly on krill, in contrast to its Atlantic counterpart, which displays a more diversified diet. The International Whaling Commission recognizes several managements units in the Atlantic and the Mediterranean Sea and the connectivity between these populations is still being debated. Questions remain about inter-individual feeding strategies and trophic ecology. The goal of this study was to compare isotopic niches of fin whales from the Mediterranean Sea and the Celtic Sea (North Atlantic). δ13C and δ15N values were analysed in 136 skin biopsies from free-ranging Mediterranean fin whales sampled in 2010 and 2011 during campaigns at sea. δ13C and δ15N values ranged from -20.4 to -17.1 ‰ and from 5.9 to 8.9 ‰, respectively. These values are in good agreement with those estimated previously from baleen plates from Mediterranean and North Atlantic fin whales. The narrow isotopic niche width of the Mediterranean fin whale (Standard Ellipses area SEAc) compared to the North Atlantic fin whale raises many concerns in the context of global changes and long-term consequences. One could indeed expect that species displaying narrow niches would be more susceptible to ecosystem fragmentation and other anthropogenic impacts. Article in Journal/Newspaper Balaenoptera physalus baleen whales Fin whale North Atlantic University of Liège: ORBi (Open Repository and Bibliography) Marine Environmental Research 127 75 83 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
marine mammals stable isotopes SIBER baleen whales Balaenoptera physalus conservation Life sciences Environmental sciences & ecology Aquatic sciences & oceanology Sciences du vivant Sciences de l’environnement & écologie Sciences aquatiques & océanologie |
spellingShingle |
marine mammals stable isotopes SIBER baleen whales Balaenoptera physalus conservation Life sciences Environmental sciences & ecology Aquatic sciences & oceanology Sciences du vivant Sciences de l’environnement & écologie Sciences aquatiques & océanologie Das, Krishna Holleville, Ophélie Ryan, Conor Berrow, Simon Gilles, Anita Ody, Denis Michel, Loïc Isotopic niches of Fin Whales from the Mediterranean Sea and the Celtic sea (North Atlantic) |
topic_facet |
marine mammals stable isotopes SIBER baleen whales Balaenoptera physalus conservation Life sciences Environmental sciences & ecology Aquatic sciences & oceanology Sciences du vivant Sciences de l’environnement & écologie Sciences aquatiques & océanologie |
description |
peer reviewed The fin whale (Balaenoptera physalus) is the most abundant and widespread mysticete species in the Mediterranean Sea, found mostly over deep, offshore waters of the western and central portion of the region. In the Mediterranean, this species is known to feed mainly on krill, in contrast to its Atlantic counterpart, which displays a more diversified diet. The International Whaling Commission recognizes several managements units in the Atlantic and the Mediterranean Sea and the connectivity between these populations is still being debated. Questions remain about inter-individual feeding strategies and trophic ecology. The goal of this study was to compare isotopic niches of fin whales from the Mediterranean Sea and the Celtic Sea (North Atlantic). δ13C and δ15N values were analysed in 136 skin biopsies from free-ranging Mediterranean fin whales sampled in 2010 and 2011 during campaigns at sea. δ13C and δ15N values ranged from -20.4 to -17.1 ‰ and from 5.9 to 8.9 ‰, respectively. These values are in good agreement with those estimated previously from baleen plates from Mediterranean and North Atlantic fin whales. The narrow isotopic niche width of the Mediterranean fin whale (Standard Ellipses area SEAc) compared to the North Atlantic fin whale raises many concerns in the context of global changes and long-term consequences. One could indeed expect that species displaying narrow niches would be more susceptible to ecosystem fragmentation and other anthropogenic impacts. |
author2 |
MARE - Centre Interfacultaire de Recherches en Océanologie - ULiège |
format |
Article in Journal/Newspaper |
author |
Das, Krishna Holleville, Ophélie Ryan, Conor Berrow, Simon Gilles, Anita Ody, Denis Michel, Loïc |
author_facet |
Das, Krishna Holleville, Ophélie Ryan, Conor Berrow, Simon Gilles, Anita Ody, Denis Michel, Loïc |
author_sort |
Das, Krishna |
title |
Isotopic niches of Fin Whales from the Mediterranean Sea and the Celtic sea (North Atlantic) |
title_short |
Isotopic niches of Fin Whales from the Mediterranean Sea and the Celtic sea (North Atlantic) |
title_full |
Isotopic niches of Fin Whales from the Mediterranean Sea and the Celtic sea (North Atlantic) |
title_fullStr |
Isotopic niches of Fin Whales from the Mediterranean Sea and the Celtic sea (North Atlantic) |
title_full_unstemmed |
Isotopic niches of Fin Whales from the Mediterranean Sea and the Celtic sea (North Atlantic) |
title_sort |
isotopic niches of fin whales from the mediterranean sea and the celtic sea (north atlantic) |
publisher |
Elsevier |
publishDate |
2017 |
url |
https://orbi.uliege.be/handle/2268/208463 https://orbi.uliege.be/bitstream/2268/208463/1/2017%20MER%20127%20p75.pdf https://doi.org/10.1016/j.marenvres.2017.03.009 |
genre |
Balaenoptera physalus baleen whales Fin whale North Atlantic |
genre_facet |
Balaenoptera physalus baleen whales Fin whale North Atlantic |
op_source |
Marine Environmental Research, 127, 75-83 (2017) |
op_relation |
https://dx.doi.org/10.1016/j.marenvres.2017.03.009 urn:issn:0141-1136 https://orbi.uliege.be/handle/2268/208463 info:hdl:2268/208463 https://orbi.uliege.be/bitstream/2268/208463/1/2017%20MER%20127%20p75.pdf doi:10.1016/j.marenvres.2017.03.009 scopus-id:2-s2.0-85017151073 info:pmid:28390660 |
op_rights |
open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.marenvres.2017.03.009 |
container_title |
Marine Environmental Research |
container_volume |
127 |
container_start_page |
75 |
op_container_end_page |
83 |
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1796939308072960000 |