Field Metabolic Rate and PCB Adipose Tissue Deposition Efficiency in East Greenland Polar Bears Derived from Contaminant Monitoring Data
Climate change will increasingly affect the natural habitat and diet of polar bears (Ursus maritimus). Understanding the energetic needs of polar bears is therefore important. We developed a theoretical method for estimating polar bear food consumption based on using the highly recalcitrant polychlo...
Published in: | PLoS ONE |
---|---|
Main Authors: | , , , , , , , , |
Format: | Text |
Language: | English |
Published: |
Public Library of Science
2014
|
Subjects: | |
Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4125222 http://www.ncbi.nlm.nih.gov/pubmed/25101837 https://doi.org/10.1371/journal.pone.0104037 |
id |
ftpubmed:oai:pubmedcentral.nih.gov:4125222 |
---|---|
record_format |
openpolar |
spelling |
ftpubmed:oai:pubmedcentral.nih.gov:4125222 2023-05-15T16:03:33+02:00 Field Metabolic Rate and PCB Adipose Tissue Deposition Efficiency in East Greenland Polar Bears Derived from Contaminant Monitoring Data Pavlova, Viola Nabe-Nielsen, Jacob Dietz, Rune Svenning, Jens-Christian Vorkamp, Katrin Rigét, Frank Farsø Sonne, Christian Letcher, Robert J. Grimm, Volker 2014-08-07 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4125222 http://www.ncbi.nlm.nih.gov/pubmed/25101837 https://doi.org/10.1371/journal.pone.0104037 en eng Public Library of Science http://www.ncbi.nlm.nih.gov/pmc/articles/PMC http://www.ncbi.nlm.nih.gov/pubmed/25101837 http://dx.doi.org/10.1371/journal.pone.0104037 This is an open-access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. CC-BY Research Article Text 2014 ftpubmed https://doi.org/10.1371/journal.pone.0104037 2014-08-17T00:57:51Z Climate change will increasingly affect the natural habitat and diet of polar bears (Ursus maritimus). Understanding the energetic needs of polar bears is therefore important. We developed a theoretical method for estimating polar bear food consumption based on using the highly recalcitrant polychlorinated biphenyl (PCB) congener, 2,2′,4,4′,55-hexaCB (CB153) in bear adipose tissue as an indicator of food intake. By comparing the CB153 tissue concentrations in wild polar bears with estimates from a purposely designed individual-based model, we identified the possible combinations of field metabolic rates (FMR) and CB153 deposition efficiencies in East Greenland polar bears. Our simulations indicate that if 30% of the CB153 consumed by polar bear individuals were deposited into their adipose tissue, the corresponding FMR would be only two times the basal metabolic rate. In contrast, if the modelled CB153 deposition efficiency were 10%, adult polar bears would require six times more energy than that needed to cover basal metabolism. This is considerably higher than what has been assumed for polar bears in previous studies though it is similar to FMRs found in other marine mammals. An implication of this result is that even relatively small reductions in future feeding opportunities could impact the survival of East Greenland polar bears. Text East Greenland Greenland Ursus maritimus PubMed Central (PMC) Greenland PLoS ONE 9 8 e104037 |
institution |
Open Polar |
collection |
PubMed Central (PMC) |
op_collection_id |
ftpubmed |
language |
English |
topic |
Research Article |
spellingShingle |
Research Article Pavlova, Viola Nabe-Nielsen, Jacob Dietz, Rune Svenning, Jens-Christian Vorkamp, Katrin Rigét, Frank Farsø Sonne, Christian Letcher, Robert J. Grimm, Volker Field Metabolic Rate and PCB Adipose Tissue Deposition Efficiency in East Greenland Polar Bears Derived from Contaminant Monitoring Data |
topic_facet |
Research Article |
description |
Climate change will increasingly affect the natural habitat and diet of polar bears (Ursus maritimus). Understanding the energetic needs of polar bears is therefore important. We developed a theoretical method for estimating polar bear food consumption based on using the highly recalcitrant polychlorinated biphenyl (PCB) congener, 2,2′,4,4′,55-hexaCB (CB153) in bear adipose tissue as an indicator of food intake. By comparing the CB153 tissue concentrations in wild polar bears with estimates from a purposely designed individual-based model, we identified the possible combinations of field metabolic rates (FMR) and CB153 deposition efficiencies in East Greenland polar bears. Our simulations indicate that if 30% of the CB153 consumed by polar bear individuals were deposited into their adipose tissue, the corresponding FMR would be only two times the basal metabolic rate. In contrast, if the modelled CB153 deposition efficiency were 10%, adult polar bears would require six times more energy than that needed to cover basal metabolism. This is considerably higher than what has been assumed for polar bears in previous studies though it is similar to FMRs found in other marine mammals. An implication of this result is that even relatively small reductions in future feeding opportunities could impact the survival of East Greenland polar bears. |
format |
Text |
author |
Pavlova, Viola Nabe-Nielsen, Jacob Dietz, Rune Svenning, Jens-Christian Vorkamp, Katrin Rigét, Frank Farsø Sonne, Christian Letcher, Robert J. Grimm, Volker |
author_facet |
Pavlova, Viola Nabe-Nielsen, Jacob Dietz, Rune Svenning, Jens-Christian Vorkamp, Katrin Rigét, Frank Farsø Sonne, Christian Letcher, Robert J. Grimm, Volker |
author_sort |
Pavlova, Viola |
title |
Field Metabolic Rate and PCB Adipose Tissue Deposition Efficiency in East Greenland Polar Bears Derived from Contaminant Monitoring Data |
title_short |
Field Metabolic Rate and PCB Adipose Tissue Deposition Efficiency in East Greenland Polar Bears Derived from Contaminant Monitoring Data |
title_full |
Field Metabolic Rate and PCB Adipose Tissue Deposition Efficiency in East Greenland Polar Bears Derived from Contaminant Monitoring Data |
title_fullStr |
Field Metabolic Rate and PCB Adipose Tissue Deposition Efficiency in East Greenland Polar Bears Derived from Contaminant Monitoring Data |
title_full_unstemmed |
Field Metabolic Rate and PCB Adipose Tissue Deposition Efficiency in East Greenland Polar Bears Derived from Contaminant Monitoring Data |
title_sort |
field metabolic rate and pcb adipose tissue deposition efficiency in east greenland polar bears derived from contaminant monitoring data |
publisher |
Public Library of Science |
publishDate |
2014 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4125222 http://www.ncbi.nlm.nih.gov/pubmed/25101837 https://doi.org/10.1371/journal.pone.0104037 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
East Greenland Greenland Ursus maritimus |
genre_facet |
East Greenland Greenland Ursus maritimus |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC http://www.ncbi.nlm.nih.gov/pubmed/25101837 http://dx.doi.org/10.1371/journal.pone.0104037 |
op_rights |
This is an open-access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1371/journal.pone.0104037 |
container_title |
PLoS ONE |
container_volume |
9 |
container_issue |
8 |
container_start_page |
e104037 |
_version_ |
1766399236878893056 |