Variation in skull bone mineral density of ringed seals (Phoca hispida) from the Gulf of Bothnia and West Greenland between 1829 and 2019
Bone is remodelled constantly through a balance of bone formation and resorption. This process can be affectedby various factors such as hormones, vitamins, nutrients and environmental factors, which can create an imbalanceresulting in systemic or local bone alteration. The aim of the present study...
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Enheten för miljöforskning och övervakning
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ftnrm:oai:DiVA.org:nrm-4130 2023-05-15T16:26:56+02:00 Variation in skull bone mineral density of ringed seals (Phoca hispida) from the Gulf of Bothnia and West Greenland between 1829 and 2019 Schmidt, Britta Sonne, Christian Nachtsheim, Dominik Dietz, Rune Oheim, Ralf Rolvien, Tim Persson, Sara Amling, Michael Siebert, Ursula 2020 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:nrm:diva-4130 https://doi.org/10.1016/j.envint.2020.105968 eng eng Enheten för miljöforskning och övervakning Environment International, 0160-4120, 2020 http://urn.kb.se/resolve?urn=urn:nbn:se:nrm:diva-4130 doi:10.1016/j.envint.2020.105968 info:eu-repo/semantics/openAccess Biological Sciences Biologiska vetenskaper Pathobiology Patobiologi Article in journal info:eu-repo/semantics/article text 2020 ftnrm https://doi.org/10.1016/j.envint.2020.105968 2021-10-08T07:21:22Z Bone is remodelled constantly through a balance of bone formation and resorption. This process can be affectedby various factors such as hormones, vitamins, nutrients and environmental factors, which can create an imbalanceresulting in systemic or local bone alteration. The aim of the present study was to analyse the changes in bone mineral density (BMD) over time in skulls of ringed seals (Pusa hispida) from the Baltic and Greenland using museum samples. Overall, 303 skulls (102 Male, 89 Female, 112 unknown) were used for bone investigationsand were divided into three periods according to collection year: before 1958 (n = 167), between 1958 and 1989 (n=40) and after 1994 up to 2019 (n=96). All skulls were examined by dual-energy X-ray absorptiometryto obtain the BMD. Skull BMD of the Baltic seals was positively correlated with the historical polychlorinatedbiphenyls (PCB) contamination having potential effects on the constitution of bones. BMD fluctuated between the three study periods (LM: p-value < 0.001, F-value = 47.5) with the lowest BMD found between 1897 and 1957, in the Gulf of Bothnia, where the highest peak of contaminant concentration was in the second period. BMD levels increased with increasing PCB concentration (LM: p < 0.001). The Greenland population showed significant lower BMD levels in the pollution and post-pollution period than the Baltic population (LM:p < 0.001). It also revealed a higher BMD in males than in females (LM: p=0.03). In conclusion, the variations between 1829 and 2019 in the Baltic Sea and Greenland may to a certain extent reflect normal fluctuations; however, this study revealed several factors affecting BMD, including sex and PCB levels. Article in Journal/Newspaper Greenland Phoca hispida Pusa hispida Swedish Museum of Natural History: Publications (DiVA) Greenland Environment International 143 105968 |
institution |
Open Polar |
collection |
Swedish Museum of Natural History: Publications (DiVA) |
op_collection_id |
ftnrm |
language |
English |
topic |
Biological Sciences Biologiska vetenskaper Pathobiology Patobiologi |
spellingShingle |
Biological Sciences Biologiska vetenskaper Pathobiology Patobiologi Schmidt, Britta Sonne, Christian Nachtsheim, Dominik Dietz, Rune Oheim, Ralf Rolvien, Tim Persson, Sara Amling, Michael Siebert, Ursula Variation in skull bone mineral density of ringed seals (Phoca hispida) from the Gulf of Bothnia and West Greenland between 1829 and 2019 |
topic_facet |
Biological Sciences Biologiska vetenskaper Pathobiology Patobiologi |
description |
Bone is remodelled constantly through a balance of bone formation and resorption. This process can be affectedby various factors such as hormones, vitamins, nutrients and environmental factors, which can create an imbalanceresulting in systemic or local bone alteration. The aim of the present study was to analyse the changes in bone mineral density (BMD) over time in skulls of ringed seals (Pusa hispida) from the Baltic and Greenland using museum samples. Overall, 303 skulls (102 Male, 89 Female, 112 unknown) were used for bone investigationsand were divided into three periods according to collection year: before 1958 (n = 167), between 1958 and 1989 (n=40) and after 1994 up to 2019 (n=96). All skulls were examined by dual-energy X-ray absorptiometryto obtain the BMD. Skull BMD of the Baltic seals was positively correlated with the historical polychlorinatedbiphenyls (PCB) contamination having potential effects on the constitution of bones. BMD fluctuated between the three study periods (LM: p-value < 0.001, F-value = 47.5) with the lowest BMD found between 1897 and 1957, in the Gulf of Bothnia, where the highest peak of contaminant concentration was in the second period. BMD levels increased with increasing PCB concentration (LM: p < 0.001). The Greenland population showed significant lower BMD levels in the pollution and post-pollution period than the Baltic population (LM:p < 0.001). It also revealed a higher BMD in males than in females (LM: p=0.03). In conclusion, the variations between 1829 and 2019 in the Baltic Sea and Greenland may to a certain extent reflect normal fluctuations; however, this study revealed several factors affecting BMD, including sex and PCB levels. |
format |
Article in Journal/Newspaper |
author |
Schmidt, Britta Sonne, Christian Nachtsheim, Dominik Dietz, Rune Oheim, Ralf Rolvien, Tim Persson, Sara Amling, Michael Siebert, Ursula |
author_facet |
Schmidt, Britta Sonne, Christian Nachtsheim, Dominik Dietz, Rune Oheim, Ralf Rolvien, Tim Persson, Sara Amling, Michael Siebert, Ursula |
author_sort |
Schmidt, Britta |
title |
Variation in skull bone mineral density of ringed seals (Phoca hispida) from the Gulf of Bothnia and West Greenland between 1829 and 2019 |
title_short |
Variation in skull bone mineral density of ringed seals (Phoca hispida) from the Gulf of Bothnia and West Greenland between 1829 and 2019 |
title_full |
Variation in skull bone mineral density of ringed seals (Phoca hispida) from the Gulf of Bothnia and West Greenland between 1829 and 2019 |
title_fullStr |
Variation in skull bone mineral density of ringed seals (Phoca hispida) from the Gulf of Bothnia and West Greenland between 1829 and 2019 |
title_full_unstemmed |
Variation in skull bone mineral density of ringed seals (Phoca hispida) from the Gulf of Bothnia and West Greenland between 1829 and 2019 |
title_sort |
variation in skull bone mineral density of ringed seals (phoca hispida) from the gulf of bothnia and west greenland between 1829 and 2019 |
publisher |
Enheten för miljöforskning och övervakning |
publishDate |
2020 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:nrm:diva-4130 https://doi.org/10.1016/j.envint.2020.105968 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Phoca hispida Pusa hispida |
genre_facet |
Greenland Phoca hispida Pusa hispida |
op_relation |
Environment International, 0160-4120, 2020 http://urn.kb.se/resolve?urn=urn:nbn:se:nrm:diva-4130 doi:10.1016/j.envint.2020.105968 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.envint.2020.105968 |
container_title |
Environment International |
container_volume |
143 |
container_start_page |
105968 |
_version_ |
1766015945178873856 |