Sodium and potassium in the bones of penguin and skua revealed by EPR and SR-XRF technique
Penguin and skua in the maritime Antarctic have high salt loadings in the body due to almost exclusive diet consumption of marine invertebrates. However, the storage and turnover of sodium and potassium in these animals are poorly investigated. Here we determined the concentration and microscopic di...
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ftarcticportal:oai:generic.eprints.org:2389 2023-10-09T21:44:11+02:00 Sodium and potassium in the bones of penguin and skua revealed by EPR and SR-XRF technique Zhouqing, Xie Siqi, Xu Yuying, Huang Wei, He Sizhao, Jin Liguang, Sun 2010-06 application/pdf http://library.arcticportal.org/2389/ http://library.arcticportal.org/2389/1/A2010-003.pdf en eng Polar Research Institute of China - PRIC http://library.arcticportal.org/2389/1/A2010-003.pdf Zhouqing, Xie and Siqi, Xu and Yuying, Huang and Wei, He and Sizhao, Jin and Liguang, Sun (2010) Sodium and potassium in the bones of penguin and skua revealed by EPR and SR-XRF technique. Advances in Polar Science, 21 (1). pp. 22-30. Fauna Article PeerReviewed 2010 ftarcticportal 2023-09-13T22:54:14Z Penguin and skua in the maritime Antarctic have high salt loadings in the body due to almost exclusive diet consumption of marine invertebrates. However, the storage and turnover of sodium and potassium in these animals are poorly investigated. Here we determined the concentration and microscopic distribution of the two elements in the bones of penguin and skua. The average concentrations of sodium and potassium in penguin bone were comparable with that in skua bone(0.18% and 0.82% for penguin bone; 0.19% and 0.76% for skua bone in dry weight). The ratios of sodium to calcium and potassium to calcium (0.0330 and 0.0075 for penguin, 0.0335 and 0.0082 for skua in average by weight) were somewhat higher than the reported ratios for terrestrial animals, indicating these marine animals' bone enrichment of salt. The ratios of sodium to potassium in average by weight were 6.75 and 4.65 for penguin and skua, respectively. This value is much lower compared with the bulk sea water ratio of about 27.0, implying that potassium is favorable to reside in the bone rather than sodium. Both sodium and potassium were found to significant correlation with the content of organic materials in bone based upon the intensity of native signal determined by electron paramagnetic resonance(EPR). It was estimated that almost all of potassium is kept within the organic phases, while about 30% of sodium is stored in organic phases and the other 70% within mineral phase. The microscopic distributions of potassium in the cross-section and/or surface were revealed by synchrotron radiation X-ray fluorescence(SR-XRF)technique. The ratio of potassium to calcium based upon the SR-XRF intensity counter varied considerably from the surface to the interior, and on the surface the highest concentration of potassium was observed in the middle section with decreasing amounts toward the edge. This indirectly documented that exchange of potassium between fluid and bone organic phase maybe occur. Article in Journal/Newspaper Advances in Polar Science Antarc* Antarctic Polar Science Polar Science Arctic Portal Library Antarctic |
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Fauna |
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Fauna Zhouqing, Xie Siqi, Xu Yuying, Huang Wei, He Sizhao, Jin Liguang, Sun Sodium and potassium in the bones of penguin and skua revealed by EPR and SR-XRF technique |
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Fauna |
description |
Penguin and skua in the maritime Antarctic have high salt loadings in the body due to almost exclusive diet consumption of marine invertebrates. However, the storage and turnover of sodium and potassium in these animals are poorly investigated. Here we determined the concentration and microscopic distribution of the two elements in the bones of penguin and skua. The average concentrations of sodium and potassium in penguin bone were comparable with that in skua bone(0.18% and 0.82% for penguin bone; 0.19% and 0.76% for skua bone in dry weight). The ratios of sodium to calcium and potassium to calcium (0.0330 and 0.0075 for penguin, 0.0335 and 0.0082 for skua in average by weight) were somewhat higher than the reported ratios for terrestrial animals, indicating these marine animals' bone enrichment of salt. The ratios of sodium to potassium in average by weight were 6.75 and 4.65 for penguin and skua, respectively. This value is much lower compared with the bulk sea water ratio of about 27.0, implying that potassium is favorable to reside in the bone rather than sodium. Both sodium and potassium were found to significant correlation with the content of organic materials in bone based upon the intensity of native signal determined by electron paramagnetic resonance(EPR). It was estimated that almost all of potassium is kept within the organic phases, while about 30% of sodium is stored in organic phases and the other 70% within mineral phase. The microscopic distributions of potassium in the cross-section and/or surface were revealed by synchrotron radiation X-ray fluorescence(SR-XRF)technique. The ratio of potassium to calcium based upon the SR-XRF intensity counter varied considerably from the surface to the interior, and on the surface the highest concentration of potassium was observed in the middle section with decreasing amounts toward the edge. This indirectly documented that exchange of potassium between fluid and bone organic phase maybe occur. |
format |
Article in Journal/Newspaper |
author |
Zhouqing, Xie Siqi, Xu Yuying, Huang Wei, He Sizhao, Jin Liguang, Sun |
author_facet |
Zhouqing, Xie Siqi, Xu Yuying, Huang Wei, He Sizhao, Jin Liguang, Sun |
author_sort |
Zhouqing, Xie |
title |
Sodium and potassium in the bones of penguin and skua revealed by EPR and SR-XRF technique |
title_short |
Sodium and potassium in the bones of penguin and skua revealed by EPR and SR-XRF technique |
title_full |
Sodium and potassium in the bones of penguin and skua revealed by EPR and SR-XRF technique |
title_fullStr |
Sodium and potassium in the bones of penguin and skua revealed by EPR and SR-XRF technique |
title_full_unstemmed |
Sodium and potassium in the bones of penguin and skua revealed by EPR and SR-XRF technique |
title_sort |
sodium and potassium in the bones of penguin and skua revealed by epr and sr-xrf technique |
publisher |
Polar Research Institute of China - PRIC |
publishDate |
2010 |
url |
http://library.arcticportal.org/2389/ http://library.arcticportal.org/2389/1/A2010-003.pdf |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Advances in Polar Science Antarc* Antarctic Polar Science Polar Science |
genre_facet |
Advances in Polar Science Antarc* Antarctic Polar Science Polar Science |
op_relation |
http://library.arcticportal.org/2389/1/A2010-003.pdf Zhouqing, Xie and Siqi, Xu and Yuying, Huang and Wei, He and Sizhao, Jin and Liguang, Sun (2010) Sodium and potassium in the bones of penguin and skua revealed by EPR and SR-XRF technique. Advances in Polar Science, 21 (1). pp. 22-30. |
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