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Reconstructing the diet, trophic level and migration pattern of mysticete whales based on baleen isotopic composition

Baleen from mysticete whales is a well-preserved proteinaceous material that can be used to identify migrations and feeding habits for species whose migration pathways are unknown. Analysis of δ(13)C and δ(15)N values from bulk baleen have been used to infer migration patterns for individuals. Howev...

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Autores principales: Riekenberg, Philip M., Camalich, Jaime, Svensson, Elisabeth, IJsseldijk, Lonneke L., Brasseur, Sophie M. J. M., Witbaard, Rob, Leopold, Mardik F., Rebolledo, Elisa Bravo, Middelburg, Jack J., van der Meer, Marcel T. J., Sinninghe Damsté, Jaap S., Schouten, Stefan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8652277/
https://www.ncbi.nlm.nih.gov/pubmed/34909214
http://dx.doi.org/10.1098/rsos.210949
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author Riekenberg, Philip M.
Camalich, Jaime
Svensson, Elisabeth
IJsseldijk, Lonneke L.
Brasseur, Sophie M. J. M.
Witbaard, Rob
Leopold, Mardik F.
Rebolledo, Elisa Bravo
Middelburg, Jack J.
van der Meer, Marcel T. J.
Sinninghe Damsté, Jaap S.
Schouten, Stefan
author_facet Riekenberg, Philip M.
Camalich, Jaime
Svensson, Elisabeth
IJsseldijk, Lonneke L.
Brasseur, Sophie M. J. M.
Witbaard, Rob
Leopold, Mardik F.
Rebolledo, Elisa Bravo
Middelburg, Jack J.
van der Meer, Marcel T. J.
Sinninghe Damsté, Jaap S.
Schouten, Stefan
author_sort Riekenberg, Philip M.
collection PubMed
description Baleen from mysticete whales is a well-preserved proteinaceous material that can be used to identify migrations and feeding habits for species whose migration pathways are unknown. Analysis of δ(13)C and δ(15)N values from bulk baleen have been used to infer migration patterns for individuals. However, this approach has fallen short of identifying migrations between regions as it is difficult to determine variations in isotopic shifts without temporal sampling of prey items. Here, we apply analysis of δ(15)N values of amino acids to five baleen plates belonging to three species, revealing novel insights on trophic position, metabolic state and migration between regions. Humpback and minke whales had higher reconstructed trophic levels than fin whales (3.7–3.8 versus 3–3.2, respectively) as expected due to different feeding specialization. Isotopic niche areas between baleen minima and maxima were well separated, indicating regional resource use for individuals during migration that aligned with isotopic gradients in Atlantic Ocean particulate organic matter. Phenylanine δ(15)N values confirmed regional separation between the niche areas for two fin whales as migrations occurred and elevated glycine and threonine δ(15)N values suggested physiological changes due to fasting. Simultaneous resolution of trophic level and physiological changes allow for identification of regional migrations in mysticetes.
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spelling pubmed-86522772021-12-13 Reconstructing the diet, trophic level and migration pattern of mysticete whales based on baleen isotopic composition Riekenberg, Philip M. Camalich, Jaime Svensson, Elisabeth IJsseldijk, Lonneke L. Brasseur, Sophie M. J. M. Witbaard, Rob Leopold, Mardik F. Rebolledo, Elisa Bravo Middelburg, Jack J. van der Meer, Marcel T. J. Sinninghe Damsté, Jaap S. Schouten, Stefan R Soc Open Sci Ecology, Conservation and Global Change Biology Baleen from mysticete whales is a well-preserved proteinaceous material that can be used to identify migrations and feeding habits for species whose migration pathways are unknown. Analysis of δ(13)C and δ(15)N values from bulk baleen have been used to infer migration patterns for individuals. However, this approach has fallen short of identifying migrations between regions as it is difficult to determine variations in isotopic shifts without temporal sampling of prey items. Here, we apply analysis of δ(15)N values of amino acids to five baleen plates belonging to three species, revealing novel insights on trophic position, metabolic state and migration between regions. Humpback and minke whales had higher reconstructed trophic levels than fin whales (3.7–3.8 versus 3–3.2, respectively) as expected due to different feeding specialization. Isotopic niche areas between baleen minima and maxima were well separated, indicating regional resource use for individuals during migration that aligned with isotopic gradients in Atlantic Ocean particulate organic matter. Phenylanine δ(15)N values confirmed regional separation between the niche areas for two fin whales as migrations occurred and elevated glycine and threonine δ(15)N values suggested physiological changes due to fasting. Simultaneous resolution of trophic level and physiological changes allow for identification of regional migrations in mysticetes. The Royal Society 2021-12-08 /pmc/articles/PMC8652277/ /pubmed/34909214 http://dx.doi.org/10.1098/rsos.210949 Text en © 2021 The Authors. https://creativecommons.org/licenses/by/4.0/Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, provided the original author and source are credited.
spellingShingle Ecology, Conservation and Global Change Biology
Riekenberg, Philip M.
Camalich, Jaime
Svensson, Elisabeth
IJsseldijk, Lonneke L.
Brasseur, Sophie M. J. M.
Witbaard, Rob
Leopold, Mardik F.
Rebolledo, Elisa Bravo
Middelburg, Jack J.
van der Meer, Marcel T. J.
Sinninghe Damsté, Jaap S.
Schouten, Stefan
Reconstructing the diet, trophic level and migration pattern of mysticete whales based on baleen isotopic composition
title Reconstructing the diet, trophic level and migration pattern of mysticete whales based on baleen isotopic composition
title_full Reconstructing the diet, trophic level and migration pattern of mysticete whales based on baleen isotopic composition
title_fullStr Reconstructing the diet, trophic level and migration pattern of mysticete whales based on baleen isotopic composition
title_full_unstemmed Reconstructing the diet, trophic level and migration pattern of mysticete whales based on baleen isotopic composition
title_short Reconstructing the diet, trophic level and migration pattern of mysticete whales based on baleen isotopic composition
title_sort reconstructing the diet, trophic level and migration pattern of mysticete whales based on baleen isotopic composition
topic Ecology, Conservation and Global Change Biology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8652277/
https://www.ncbi.nlm.nih.gov/pubmed/34909214
http://dx.doi.org/10.1098/rsos.210949
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