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Combining simulation modeling and stable isotope analyses to reconstruct the last known movements of one of Nature’s giants

The spatial ecology of rare, migratory oceanic animals is difficult to study directly. Where incremental tissues are available, their chemical composition can provide valuable indirect observations of movement and diet. Interpreting the chemical record in incremental tissues can be highly uncertain,...

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Autores principales: Trueman, Clive N., Jackson, Andrew L., Chadwick, Katharyn S., Coombs, Ellen J., Feyrer, Laura J., Magozzi, Sarah, Sabin, Richard C., Cooper, Natalie
Formato: Online Artículo Texto
Lenguaje:English
Publicado: PeerJ Inc. 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6802580/
https://www.ncbi.nlm.nih.gov/pubmed/31637141
http://dx.doi.org/10.7717/peerj.7912
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author Trueman, Clive N.
Jackson, Andrew L.
Chadwick, Katharyn S.
Coombs, Ellen J.
Feyrer, Laura J.
Magozzi, Sarah
Sabin, Richard C.
Cooper, Natalie
author_facet Trueman, Clive N.
Jackson, Andrew L.
Chadwick, Katharyn S.
Coombs, Ellen J.
Feyrer, Laura J.
Magozzi, Sarah
Sabin, Richard C.
Cooper, Natalie
author_sort Trueman, Clive N.
collection PubMed
description The spatial ecology of rare, migratory oceanic animals is difficult to study directly. Where incremental tissues are available, their chemical composition can provide valuable indirect observations of movement and diet. Interpreting the chemical record in incremental tissues can be highly uncertain, however, as multiple mechanisms interact to produce the observed data. Simulation modeling is one approach for considering alternative hypotheses in ecology and can be used to consider the relative likelihood of obtaining an observed record under different combinations of ecological and environmental processes. Here we show how a simulation modeling approach can help to infer movement behaviour based on stable carbon isotope profiles measured in incremental baleen tissues of a blue whale (Balaenoptera musculus). The life history of this particular specimen, which stranded in 1891 in the UK, was selected as a case study due to its cultural significance as part of a permanent display at the Natural History Museum, London. We specifically tested whether measured variations in stable isotope compositions across the analysed baleen plate were more consistent with residency or latitudinal migrations. The measured isotopic record was most closely reproduced with a period of residency in sub-tropical waters for at least a full year followed by three repeated annual migrations between sub-tropical and high latitude regions. The latitudinal migration cycle was interrupted in the year prior to stranding, potentially implying pregnancy and weaning, but isotopic data alone cannot test this hypothesis. Simulation methods can help reveal movement information coded in the biochemical compositions of incremental tissues such as those archived in historic collections, and provides context and inferences that are useful for retrospective studies of animal movement, especially where other sources of individual movement data are sparse or challenging to validate.
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spelling pubmed-68025802019-10-21 Combining simulation modeling and stable isotope analyses to reconstruct the last known movements of one of Nature’s giants Trueman, Clive N. Jackson, Andrew L. Chadwick, Katharyn S. Coombs, Ellen J. Feyrer, Laura J. Magozzi, Sarah Sabin, Richard C. Cooper, Natalie PeerJ Ecology The spatial ecology of rare, migratory oceanic animals is difficult to study directly. Where incremental tissues are available, their chemical composition can provide valuable indirect observations of movement and diet. Interpreting the chemical record in incremental tissues can be highly uncertain, however, as multiple mechanisms interact to produce the observed data. Simulation modeling is one approach for considering alternative hypotheses in ecology and can be used to consider the relative likelihood of obtaining an observed record under different combinations of ecological and environmental processes. Here we show how a simulation modeling approach can help to infer movement behaviour based on stable carbon isotope profiles measured in incremental baleen tissues of a blue whale (Balaenoptera musculus). The life history of this particular specimen, which stranded in 1891 in the UK, was selected as a case study due to its cultural significance as part of a permanent display at the Natural History Museum, London. We specifically tested whether measured variations in stable isotope compositions across the analysed baleen plate were more consistent with residency or latitudinal migrations. The measured isotopic record was most closely reproduced with a period of residency in sub-tropical waters for at least a full year followed by three repeated annual migrations between sub-tropical and high latitude regions. The latitudinal migration cycle was interrupted in the year prior to stranding, potentially implying pregnancy and weaning, but isotopic data alone cannot test this hypothesis. Simulation methods can help reveal movement information coded in the biochemical compositions of incremental tissues such as those archived in historic collections, and provides context and inferences that are useful for retrospective studies of animal movement, especially where other sources of individual movement data are sparse or challenging to validate. PeerJ Inc. 2019-10-18 /pmc/articles/PMC6802580/ /pubmed/31637141 http://dx.doi.org/10.7717/peerj.7912 Text en ©2019 Trueman et al. https://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.
spellingShingle Ecology
Trueman, Clive N.
Jackson, Andrew L.
Chadwick, Katharyn S.
Coombs, Ellen J.
Feyrer, Laura J.
Magozzi, Sarah
Sabin, Richard C.
Cooper, Natalie
Combining simulation modeling and stable isotope analyses to reconstruct the last known movements of one of Nature’s giants
title Combining simulation modeling and stable isotope analyses to reconstruct the last known movements of one of Nature’s giants
title_full Combining simulation modeling and stable isotope analyses to reconstruct the last known movements of one of Nature’s giants
title_fullStr Combining simulation modeling and stable isotope analyses to reconstruct the last known movements of one of Nature’s giants
title_full_unstemmed Combining simulation modeling and stable isotope analyses to reconstruct the last known movements of one of Nature’s giants
title_short Combining simulation modeling and stable isotope analyses to reconstruct the last known movements of one of Nature’s giants
title_sort combining simulation modeling and stable isotope analyses to reconstruct the last known movements of one of nature’s giants
topic Ecology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6802580/
https://www.ncbi.nlm.nih.gov/pubmed/31637141
http://dx.doi.org/10.7717/peerj.7912
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