Determination of water balance maintenance in Orcinus orca and Tursiops truncatus using oxygen isotopes
International audience The secondary adaptation of Cetacea to a fully marine lifestyle raises the question of their ability to maintain their water balance in a hyperosmotic environment. Cetacea have access to four potential sources of water: surrounding salt oceanic water, dietary free water, metab...
Published in: | Journal of Experimental Biology |
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Online Access: | https://mnhn.hal.science/mnhn-04266511 https://doi.org/10.1242/jeb.245648 |
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ftmuseumnhn:oai:HAL:mnhn-04266511v1 2024-09-15T18:28:53+00:00 Determination of water balance maintenance in Orcinus orca and Tursiops truncatus using oxygen isotopes Séon, Nicolas Brasseur, Isabelle Scala, Christopher Tacail, Théo Catteau, Sidonie Fourel, François Vincent, Peggy Lécuyer, Christophe Suan, Guillaume Charbonnier, Sylvain Vinçon-Laugier, Arnauld Amiot, Romain Centre de Recherche en Paléontologie - Paris (CR2P) Muséum national d'Histoire naturelle (MNHN)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement (LGL-TPE) École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS) ANR-18-CE31-0020,Oxymore,Rapports isotopiques de l'oxygène des océans mésozoïques revisités(2018) 2023 https://mnhn.hal.science/mnhn-04266511 https://doi.org/10.1242/jeb.245648 en eng HAL CCSD The Company of Biologists info:eu-repo/semantics/altIdentifier/doi/10.1242/jeb.245648 mnhn-04266511 https://mnhn.hal.science/mnhn-04266511 doi:10.1242/jeb.245648 ISSN: 0022-0949 EISSN: 1477-9145 Journal of Experimental Biology https://mnhn.hal.science/mnhn-04266511 Journal of Experimental Biology, 2023, 226 (23), ⟨10.1242/jeb.245648⟩ [SDV]Life Sciences [q-bio] info:eu-repo/semantics/article Journal articles 2023 ftmuseumnhn https://doi.org/10.1242/jeb.245648 2024-07-08T23:40:06Z International audience The secondary adaptation of Cetacea to a fully marine lifestyle raises the question of their ability to maintain their water balance in a hyperosmotic environment. Cetacea have access to four potential sources of water: surrounding salt oceanic water, dietary free water, metabolic water and inhaled water vapor to a lesser degree. Here, we measured the 18O/16O oxygen isotope ratio of blood plasma from thirteen specimens belonging to two species of Cetacea raised under human care (four killer whales Orcinus orca, nine common bottlenose dolphins Tursiops truncatus) to investigate and quantify the contribution of preformed water (dietary free water, surrounding salt oceanic water) and metabolic water to Cetacea body water using a box-modelling approach. The oxygen isotope composition of Cetacea blood plasmas indicates that dietary free water and metabolic water contribute to more than 90% of the total water inputs in weight for cetaceans, with the remaining 10% consisting of inhaled water vapor and surrounding water accidentally ingested or absorbed through the skin. Moreover, the contribution of metabolic water appears to be more important in organisms with a more lipid-rich diet. Beyond these physiological and conservation biology implications, this study opens up questions that need to be addressed, such as the applicability of the oxygen isotope composition of cetacean body fluids and skeletal elements as an environmental proxy of the oxygen isotope composition of present and past marine waters. Article in Journal/Newspaper Orca Orcinus orca Muséum National d'Histoire Naturelle (MNHM): HAL Journal of Experimental Biology |
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Muséum National d'Histoire Naturelle (MNHM): HAL |
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ftmuseumnhn |
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English |
topic |
[SDV]Life Sciences [q-bio] |
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[SDV]Life Sciences [q-bio] Séon, Nicolas Brasseur, Isabelle Scala, Christopher Tacail, Théo Catteau, Sidonie Fourel, François Vincent, Peggy Lécuyer, Christophe Suan, Guillaume Charbonnier, Sylvain Vinçon-Laugier, Arnauld Amiot, Romain Determination of water balance maintenance in Orcinus orca and Tursiops truncatus using oxygen isotopes |
topic_facet |
[SDV]Life Sciences [q-bio] |
description |
International audience The secondary adaptation of Cetacea to a fully marine lifestyle raises the question of their ability to maintain their water balance in a hyperosmotic environment. Cetacea have access to four potential sources of water: surrounding salt oceanic water, dietary free water, metabolic water and inhaled water vapor to a lesser degree. Here, we measured the 18O/16O oxygen isotope ratio of blood plasma from thirteen specimens belonging to two species of Cetacea raised under human care (four killer whales Orcinus orca, nine common bottlenose dolphins Tursiops truncatus) to investigate and quantify the contribution of preformed water (dietary free water, surrounding salt oceanic water) and metabolic water to Cetacea body water using a box-modelling approach. The oxygen isotope composition of Cetacea blood plasmas indicates that dietary free water and metabolic water contribute to more than 90% of the total water inputs in weight for cetaceans, with the remaining 10% consisting of inhaled water vapor and surrounding water accidentally ingested or absorbed through the skin. Moreover, the contribution of metabolic water appears to be more important in organisms with a more lipid-rich diet. Beyond these physiological and conservation biology implications, this study opens up questions that need to be addressed, such as the applicability of the oxygen isotope composition of cetacean body fluids and skeletal elements as an environmental proxy of the oxygen isotope composition of present and past marine waters. |
author2 |
Centre de Recherche en Paléontologie - Paris (CR2P) Muséum national d'Histoire naturelle (MNHN)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement (LGL-TPE) École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS) ANR-18-CE31-0020,Oxymore,Rapports isotopiques de l'oxygène des océans mésozoïques revisités(2018) |
format |
Article in Journal/Newspaper |
author |
Séon, Nicolas Brasseur, Isabelle Scala, Christopher Tacail, Théo Catteau, Sidonie Fourel, François Vincent, Peggy Lécuyer, Christophe Suan, Guillaume Charbonnier, Sylvain Vinçon-Laugier, Arnauld Amiot, Romain |
author_facet |
Séon, Nicolas Brasseur, Isabelle Scala, Christopher Tacail, Théo Catteau, Sidonie Fourel, François Vincent, Peggy Lécuyer, Christophe Suan, Guillaume Charbonnier, Sylvain Vinçon-Laugier, Arnauld Amiot, Romain |
author_sort |
Séon, Nicolas |
title |
Determination of water balance maintenance in Orcinus orca and Tursiops truncatus using oxygen isotopes |
title_short |
Determination of water balance maintenance in Orcinus orca and Tursiops truncatus using oxygen isotopes |
title_full |
Determination of water balance maintenance in Orcinus orca and Tursiops truncatus using oxygen isotopes |
title_fullStr |
Determination of water balance maintenance in Orcinus orca and Tursiops truncatus using oxygen isotopes |
title_full_unstemmed |
Determination of water balance maintenance in Orcinus orca and Tursiops truncatus using oxygen isotopes |
title_sort |
determination of water balance maintenance in orcinus orca and tursiops truncatus using oxygen isotopes |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://mnhn.hal.science/mnhn-04266511 https://doi.org/10.1242/jeb.245648 |
genre |
Orca Orcinus orca |
genre_facet |
Orca Orcinus orca |
op_source |
ISSN: 0022-0949 EISSN: 1477-9145 Journal of Experimental Biology https://mnhn.hal.science/mnhn-04266511 Journal of Experimental Biology, 2023, 226 (23), ⟨10.1242/jeb.245648⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1242/jeb.245648 mnhn-04266511 https://mnhn.hal.science/mnhn-04266511 doi:10.1242/jeb.245648 |
op_doi |
https://doi.org/10.1242/jeb.245648 |
container_title |
Journal of Experimental Biology |
_version_ |
1810470311863255040 |