Fatty acid composition of Mediterranean fin whale Balaenoptera physalus blubber with respect to body heterogeneity and trophic interaction
International audience Blubber blocks were collected from both a recently killed (dead whale complete samples; DWCS) and several live (living whale partial samples; WPS) Mediterranean fin whales Balaenoptera physalus and analyzed for their lipid and fatty acid (FA) composition. Mean lipid content fo...
Main Authors: | , , , |
---|---|
Other Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2006
|
Subjects: | |
Online Access: | https://hal.science/hal-00184479 https://hal.science/hal-00184479/document https://hal.science/hal-00184479/file/m311p165.pdf |
id |
ftunivnantes:oai:HAL:hal-00184479v1 |
---|---|
record_format |
openpolar |
spelling |
ftunivnantes:oai:HAL:hal-00184479v1 2023-05-15T15:36:34+02:00 Fatty acid composition of Mediterranean fin whale Balaenoptera physalus blubber with respect to body heterogeneity and trophic interaction Ruchonnet, Diane Boutoute, Marc Guinet, Christophe Mayzaud, Patrick Laboratoire d'océanographie de Villefranche (LOV) Observatoire océanologique de Villefranche-sur-mer (OOVM) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Environmental Research Institute Centre d'Études Biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) 2006-04 https://hal.science/hal-00184479 https://hal.science/hal-00184479/document https://hal.science/hal-00184479/file/m311p165.pdf en eng HAL CCSD Inter Research hal-00184479 https://hal.science/hal-00184479 https://hal.science/hal-00184479/document https://hal.science/hal-00184479/file/m311p165.pdf http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 0171-8630 EISSN: 1616-1599 Marine Ecology Progress Series https://hal.science/hal-00184479 Marine Ecology Progress Series, 2006, 311, pp.165-174 Balaenoptera physalus Blubber Fatty acid Trophic interaction [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environmental and Society info:eu-repo/semantics/article Journal articles 2006 ftunivnantes 2023-02-08T04:36:00Z International audience Blubber blocks were collected from both a recently killed (dead whale complete samples; DWCS) and several live (living whale partial samples; WPS) Mediterranean fin whales Balaenoptera physalus and analyzed for their lipid and fatty acid (FA) composition. Mean lipid content for the different body parts of DWCS samples ranged from 33 to 69% of the wet weight and triacylglycerols (TG) represented 80 to 86% of the total lipids; 36 FAs were observed in all blubber layers in greater than trace amounts (>0.2%). Multivariate correspondence analysis showed that the major variation in FAs structure was related to body position (dorsal versus ventral and lateral) and to a lesser extent to the blubber stratification. Dorsal blubber TG could be distinguished from the other locations by the relative levels of 20:0 and 20:1 FA, whereas polyunsaturated fatty acids (PUFA) were the main descriptors of the lateral and ventral blubber. Stratification resulted in a slight increase in monoenoic fatty acid (MUFA) content from the inner to the outer layers and a decreasing PUFA content. The 6 biopsies from living whales showed a similar FA composition and displayed FA profiles similar to those of the dorsal outer blubber blocks. Comparison of blubber FA structure with fin whales from the North Atlantic showed major differences, with a far lower percentage of 22:1 FA for the Mediterranean individuals and smaller differences in long chain MUFA between the inner and outer layer. Fin whales feed on the euphausiid Meganyctiphanes norvegica. Ligurian Sea M. norvegica appeared to have lower percentages of 20:1 and 22:1 FAs than their North Atlantic counterparts. Hence, the lower percentages of 20:1 and 22:1 FAs in the inner layer could reflect the structure of the prey assimilated. The slightly higher values in the outer layer could reflect the previous fall and winter feeding periods in Atlantic waters. The relative homogeneity of the blubber throughout the body suggested that sampling live animals to describe ... Article in Journal/Newspaper Balaenoptera physalus Fin whale Meganyctiphanes norvegica North Atlantic Université de Nantes: HAL-UNIV-NANTES |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
Balaenoptera physalus Blubber Fatty acid Trophic interaction [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environmental and Society |
spellingShingle |
Balaenoptera physalus Blubber Fatty acid Trophic interaction [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environmental and Society Ruchonnet, Diane Boutoute, Marc Guinet, Christophe Mayzaud, Patrick Fatty acid composition of Mediterranean fin whale Balaenoptera physalus blubber with respect to body heterogeneity and trophic interaction |
topic_facet |
Balaenoptera physalus Blubber Fatty acid Trophic interaction [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environmental and Society |
description |
International audience Blubber blocks were collected from both a recently killed (dead whale complete samples; DWCS) and several live (living whale partial samples; WPS) Mediterranean fin whales Balaenoptera physalus and analyzed for their lipid and fatty acid (FA) composition. Mean lipid content for the different body parts of DWCS samples ranged from 33 to 69% of the wet weight and triacylglycerols (TG) represented 80 to 86% of the total lipids; 36 FAs were observed in all blubber layers in greater than trace amounts (>0.2%). Multivariate correspondence analysis showed that the major variation in FAs structure was related to body position (dorsal versus ventral and lateral) and to a lesser extent to the blubber stratification. Dorsal blubber TG could be distinguished from the other locations by the relative levels of 20:0 and 20:1 FA, whereas polyunsaturated fatty acids (PUFA) were the main descriptors of the lateral and ventral blubber. Stratification resulted in a slight increase in monoenoic fatty acid (MUFA) content from the inner to the outer layers and a decreasing PUFA content. The 6 biopsies from living whales showed a similar FA composition and displayed FA profiles similar to those of the dorsal outer blubber blocks. Comparison of blubber FA structure with fin whales from the North Atlantic showed major differences, with a far lower percentage of 22:1 FA for the Mediterranean individuals and smaller differences in long chain MUFA between the inner and outer layer. Fin whales feed on the euphausiid Meganyctiphanes norvegica. Ligurian Sea M. norvegica appeared to have lower percentages of 20:1 and 22:1 FAs than their North Atlantic counterparts. Hence, the lower percentages of 20:1 and 22:1 FAs in the inner layer could reflect the structure of the prey assimilated. The slightly higher values in the outer layer could reflect the previous fall and winter feeding periods in Atlantic waters. The relative homogeneity of the blubber throughout the body suggested that sampling live animals to describe ... |
author2 |
Laboratoire d'océanographie de Villefranche (LOV) Observatoire océanologique de Villefranche-sur-mer (OOVM) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Environmental Research Institute Centre d'Études Biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Ruchonnet, Diane Boutoute, Marc Guinet, Christophe Mayzaud, Patrick |
author_facet |
Ruchonnet, Diane Boutoute, Marc Guinet, Christophe Mayzaud, Patrick |
author_sort |
Ruchonnet, Diane |
title |
Fatty acid composition of Mediterranean fin whale Balaenoptera physalus blubber with respect to body heterogeneity and trophic interaction |
title_short |
Fatty acid composition of Mediterranean fin whale Balaenoptera physalus blubber with respect to body heterogeneity and trophic interaction |
title_full |
Fatty acid composition of Mediterranean fin whale Balaenoptera physalus blubber with respect to body heterogeneity and trophic interaction |
title_fullStr |
Fatty acid composition of Mediterranean fin whale Balaenoptera physalus blubber with respect to body heterogeneity and trophic interaction |
title_full_unstemmed |
Fatty acid composition of Mediterranean fin whale Balaenoptera physalus blubber with respect to body heterogeneity and trophic interaction |
title_sort |
fatty acid composition of mediterranean fin whale balaenoptera physalus blubber with respect to body heterogeneity and trophic interaction |
publisher |
HAL CCSD |
publishDate |
2006 |
url |
https://hal.science/hal-00184479 https://hal.science/hal-00184479/document https://hal.science/hal-00184479/file/m311p165.pdf |
genre |
Balaenoptera physalus Fin whale Meganyctiphanes norvegica North Atlantic |
genre_facet |
Balaenoptera physalus Fin whale Meganyctiphanes norvegica North Atlantic |
op_source |
ISSN: 0171-8630 EISSN: 1616-1599 Marine Ecology Progress Series https://hal.science/hal-00184479 Marine Ecology Progress Series, 2006, 311, pp.165-174 |
op_relation |
hal-00184479 https://hal.science/hal-00184479 https://hal.science/hal-00184479/document https://hal.science/hal-00184479/file/m311p165.pdf |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
_version_ |
1766366926026571776 |