Ecological correlates of variable organ sizes and fat loads in the most northerly wintering shorebirds
Shorebirds at northern latitudes during the nonbreeding season typically carry relatively large lipid stores and exhibit an up-regulation of lean tissues associated with digestion and thermogenesis. Intraspecific variation in these tissues across sites primarily reflects differences in environmental...
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crcansciencepubl:10.1139/cjz-2013-0070 2023-12-17T10:28:30+01:00 Ecological correlates of variable organ sizes and fat loads in the most northerly wintering shorebirds Ruthrauff, D.R. Dekinga, A. Gill, R.E. Summers, R.W. Piersma, T. 2013 http://dx.doi.org/10.1139/cjz-2013-0070 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjz-2013-0070 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjz-2013-0070 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 91, issue 10, page 698-705 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 2013 crcansciencepubl https://doi.org/10.1139/cjz-2013-0070 2023-11-19T13:39:22Z Shorebirds at northern latitudes during the nonbreeding season typically carry relatively large lipid stores and exhibit an up-regulation of lean tissues associated with digestion and thermogenesis. Intraspecific variation in these tissues across sites primarily reflects differences in environmental conditions. Rock (Calidris ptilocnemis (Coues, 1873)) and Purple (Calidris maritima (Brünnich, 1764)) sandpipers are closely related species having the most northerly nonbreeding distributions among shorebirds, living at latitudes up to 61°N in Cook Inlet, Alaska, and up to ∼71°N in northern Norway, respectively. Cook Inlet is the coldest known site used by nonbreeding shorebirds, and the region’s mudflats annually experience extensive coverage of foraging sites by sea and shore-fast ice. Accordingly, Rock Sandpipers increase their fat stores to nearly 20% of body mass during winter. In contrast, Purple Sandpipers exploit predictably ice-free rocky intertidal foraging sites and maintain low (<6.5%) fat stores. Rock Sandpipers increase the mass of lean tissues from fall to winter, including contour feathers, stomach, and liver components. They also have greater lean pectoralis and supracoracoideus muscle and liver and kidney tissues compared with Purple Sandpipers in winter. This demonstrates a combined emphasis on digestive processes and thermogenesis, whereas Purple Sandpipers primarily augment organs associated with digestive processes. The high winter fat loads and increased lean tissues of Rock Sandpipers in Cook Inlet reflect the region’s persistent cold and abundant but sporadically unavailable food resources. Article in Journal/Newspaper Calidris maritima Northern Norway Alaska Canadian Science Publishing (via Crossref) Norway Canadian Journal of Zoology 91 10 698 705 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Ruthrauff, D.R. Dekinga, A. Gill, R.E. Summers, R.W. Piersma, T. Ecological correlates of variable organ sizes and fat loads in the most northerly wintering shorebirds |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Shorebirds at northern latitudes during the nonbreeding season typically carry relatively large lipid stores and exhibit an up-regulation of lean tissues associated with digestion and thermogenesis. Intraspecific variation in these tissues across sites primarily reflects differences in environmental conditions. Rock (Calidris ptilocnemis (Coues, 1873)) and Purple (Calidris maritima (Brünnich, 1764)) sandpipers are closely related species having the most northerly nonbreeding distributions among shorebirds, living at latitudes up to 61°N in Cook Inlet, Alaska, and up to ∼71°N in northern Norway, respectively. Cook Inlet is the coldest known site used by nonbreeding shorebirds, and the region’s mudflats annually experience extensive coverage of foraging sites by sea and shore-fast ice. Accordingly, Rock Sandpipers increase their fat stores to nearly 20% of body mass during winter. In contrast, Purple Sandpipers exploit predictably ice-free rocky intertidal foraging sites and maintain low (<6.5%) fat stores. Rock Sandpipers increase the mass of lean tissues from fall to winter, including contour feathers, stomach, and liver components. They also have greater lean pectoralis and supracoracoideus muscle and liver and kidney tissues compared with Purple Sandpipers in winter. This demonstrates a combined emphasis on digestive processes and thermogenesis, whereas Purple Sandpipers primarily augment organs associated with digestive processes. The high winter fat loads and increased lean tissues of Rock Sandpipers in Cook Inlet reflect the region’s persistent cold and abundant but sporadically unavailable food resources. |
format |
Article in Journal/Newspaper |
author |
Ruthrauff, D.R. Dekinga, A. Gill, R.E. Summers, R.W. Piersma, T. |
author_facet |
Ruthrauff, D.R. Dekinga, A. Gill, R.E. Summers, R.W. Piersma, T. |
author_sort |
Ruthrauff, D.R. |
title |
Ecological correlates of variable organ sizes and fat loads in the most northerly wintering shorebirds |
title_short |
Ecological correlates of variable organ sizes and fat loads in the most northerly wintering shorebirds |
title_full |
Ecological correlates of variable organ sizes and fat loads in the most northerly wintering shorebirds |
title_fullStr |
Ecological correlates of variable organ sizes and fat loads in the most northerly wintering shorebirds |
title_full_unstemmed |
Ecological correlates of variable organ sizes and fat loads in the most northerly wintering shorebirds |
title_sort |
ecological correlates of variable organ sizes and fat loads in the most northerly wintering shorebirds |
publisher |
Canadian Science Publishing |
publishDate |
2013 |
url |
http://dx.doi.org/10.1139/cjz-2013-0070 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjz-2013-0070 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjz-2013-0070 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Calidris maritima Northern Norway Alaska |
genre_facet |
Calidris maritima Northern Norway Alaska |
op_source |
Canadian Journal of Zoology volume 91, issue 10, page 698-705 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cjz-2013-0070 |
container_title |
Canadian Journal of Zoology |
container_volume |
91 |
container_issue |
10 |
container_start_page |
698 |
op_container_end_page |
705 |
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1785580618006921216 |