Isotopic composition of the eastern gray whale epidermis indicates contribution of prey outside Arctic feeding grounds
Eastern gray whales’ distribution range and plasticity in feeding behavior complicates the understanding of critical life-history such as pregnancy and lactation. Our goal was to determine if females who experienced gestation, gave birth, and lactated their calves, assimilated a high proportion of b...
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ftpubmed:oai:pubmedcentral.nih.gov:9054758 2023-05-15T15:12:00+02:00 Isotopic composition of the eastern gray whale epidermis indicates contribution of prey outside Arctic feeding grounds Gelippi, Michelle Caraveo-Patiño, Javier Gauger, Marco F. W. Popp, Brian N. Panigada, Simone Marcín-Medina, Rocío 2022-04-29 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9054758/ http://www.ncbi.nlm.nih.gov/pubmed/35488113 https://doi.org/10.1038/s41598-022-10780-1 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9054758/ http://www.ncbi.nlm.nih.gov/pubmed/35488113 http://dx.doi.org/10.1038/s41598-022-10780-1 © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . CC-BY Sci Rep Article Text 2022 ftpubmed https://doi.org/10.1038/s41598-022-10780-1 2022-05-08T00:49:05Z Eastern gray whales’ distribution range and plasticity in feeding behavior complicates the understanding of critical life-history such as pregnancy and lactation. Our goal was to determine if females who experienced gestation, gave birth, and lactated their calves, assimilated a high proportion of benthic amphipods from the Bering Sea, which are considered the species’ main prey. We used Bayesian stable isotope mixing models to estimate the probability of contribution of food items sampled along the species’ distributional range, using isotopic data on amphipods from the Bering Sea, mysids from Vancouver Island, and amphipods and polychaetes from Ojo de Liebre Lagoon. We sampled epidermal tissue from lactating females (n = 25) and calves (n = 34) and analyzed their carbon and nitrogen isotopic composition. Model outcome indicated that benthic amphipods from the Bering Sea were not the primary food for the eastern gray whale. Each mother performed a different feeding strategy, and prey from Vancouver Island were generally as important as that from the Bering Sea. Moreover, model results indicate a constant use of Ojo de Liebre Lagoon as a feeding ground. Our results appear to agree with previous studies that report continuous feeding by females to satisfy certain physiological requirements (e.g., fatty acids omega-6) during migration and breeding time. Future investigations of the isotopic composition of all those prey items that could be assimilated by the eastern gray whale emerge as critical. Both historical and recent information, that would provide insights in the species feeding ecology under past and present environmental conditions, should be considered as equally important to establish conservation and management plans. Text Arctic Bering Sea PubMed Central (PMC) Arctic Bering Sea Scientific Reports 12 1 |
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Article Gelippi, Michelle Caraveo-Patiño, Javier Gauger, Marco F. W. Popp, Brian N. Panigada, Simone Marcín-Medina, Rocío Isotopic composition of the eastern gray whale epidermis indicates contribution of prey outside Arctic feeding grounds |
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Eastern gray whales’ distribution range and plasticity in feeding behavior complicates the understanding of critical life-history such as pregnancy and lactation. Our goal was to determine if females who experienced gestation, gave birth, and lactated their calves, assimilated a high proportion of benthic amphipods from the Bering Sea, which are considered the species’ main prey. We used Bayesian stable isotope mixing models to estimate the probability of contribution of food items sampled along the species’ distributional range, using isotopic data on amphipods from the Bering Sea, mysids from Vancouver Island, and amphipods and polychaetes from Ojo de Liebre Lagoon. We sampled epidermal tissue from lactating females (n = 25) and calves (n = 34) and analyzed their carbon and nitrogen isotopic composition. Model outcome indicated that benthic amphipods from the Bering Sea were not the primary food for the eastern gray whale. Each mother performed a different feeding strategy, and prey from Vancouver Island were generally as important as that from the Bering Sea. Moreover, model results indicate a constant use of Ojo de Liebre Lagoon as a feeding ground. Our results appear to agree with previous studies that report continuous feeding by females to satisfy certain physiological requirements (e.g., fatty acids omega-6) during migration and breeding time. Future investigations of the isotopic composition of all those prey items that could be assimilated by the eastern gray whale emerge as critical. Both historical and recent information, that would provide insights in the species feeding ecology under past and present environmental conditions, should be considered as equally important to establish conservation and management plans. |
format |
Text |
author |
Gelippi, Michelle Caraveo-Patiño, Javier Gauger, Marco F. W. Popp, Brian N. Panigada, Simone Marcín-Medina, Rocío |
author_facet |
Gelippi, Michelle Caraveo-Patiño, Javier Gauger, Marco F. W. Popp, Brian N. Panigada, Simone Marcín-Medina, Rocío |
author_sort |
Gelippi, Michelle |
title |
Isotopic composition of the eastern gray whale epidermis indicates contribution of prey outside Arctic feeding grounds |
title_short |
Isotopic composition of the eastern gray whale epidermis indicates contribution of prey outside Arctic feeding grounds |
title_full |
Isotopic composition of the eastern gray whale epidermis indicates contribution of prey outside Arctic feeding grounds |
title_fullStr |
Isotopic composition of the eastern gray whale epidermis indicates contribution of prey outside Arctic feeding grounds |
title_full_unstemmed |
Isotopic composition of the eastern gray whale epidermis indicates contribution of prey outside Arctic feeding grounds |
title_sort |
isotopic composition of the eastern gray whale epidermis indicates contribution of prey outside arctic feeding grounds |
publisher |
Nature Publishing Group UK |
publishDate |
2022 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9054758/ http://www.ncbi.nlm.nih.gov/pubmed/35488113 https://doi.org/10.1038/s41598-022-10780-1 |
geographic |
Arctic Bering Sea |
geographic_facet |
Arctic Bering Sea |
genre |
Arctic Bering Sea |
genre_facet |
Arctic Bering Sea |
op_source |
Sci Rep |
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9054758/ http://www.ncbi.nlm.nih.gov/pubmed/35488113 http://dx.doi.org/10.1038/s41598-022-10780-1 |
op_rights |
© The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
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CC-BY |
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https://doi.org/10.1038/s41598-022-10780-1 |
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Scientific Reports |
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12 |
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1 |
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1766342758989037568 |