Seasonal changes in body composition of the arctic ground squirrel, Citellus undulatus
The depletion or accumulation of body reserves is followed in terms of the weight and proportion of lipid, protein, water, and minerals in arctic ground squirrels during the entry, deep, and emergent phases of the hibernation season and after the reproductive phase of the active season. Average weig...
Published in: | Canadian Journal of Zoology |
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Language: | English |
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Canadian Science Publishing
1976
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Online Access: | http://dx.doi.org/10.1139/z76-008 http://www.nrcresearchpress.com/doi/pdf/10.1139/z76-008 |
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crcansciencepubl:10.1139/z76-008 2024-09-30T14:28:32+00:00 Seasonal changes in body composition of the arctic ground squirrel, Citellus undulatus Galster, William Morrison, Peter 1976 http://dx.doi.org/10.1139/z76-008 http://www.nrcresearchpress.com/doi/pdf/10.1139/z76-008 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 54, issue 1, page 74-78 ISSN 0008-4301 1480-3283 journal-article 1976 crcansciencepubl https://doi.org/10.1139/z76-008 2024-09-12T04:13:22Z The depletion or accumulation of body reserves is followed in terms of the weight and proportion of lipid, protein, water, and minerals in arctic ground squirrels during the entry, deep, and emergent phases of the hibernation season and after the reproductive phase of the active season. Average weight increased slowly through the summer, from a minimum of 346 g, until mid-August when 190 g accumulated in 3 weeks to be used subsequently during the 220-day hibernation season beginning in mid-September. During hibernation, the 325-g loss in weight represents 62% lipid, 26% water, 9% protein, and 2% mineral. Fat in lipid provides most of the energy but insufficient amounts of carbon for glucose synthesis during hibernation. However, protein provides an adequate gluconeogenic reserve. Significant loss of mineral indicates that skeletal reserves of calcium are important during hibernation. After hibernation, continued loss of weight by females indicates further utilization of reserves during gestation and nursing. Article in Journal/Newspaper Arctic ground squirrel Arctic Canadian Science Publishing Arctic Canadian Journal of Zoology 54 1 74 78 |
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Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
description |
The depletion or accumulation of body reserves is followed in terms of the weight and proportion of lipid, protein, water, and minerals in arctic ground squirrels during the entry, deep, and emergent phases of the hibernation season and after the reproductive phase of the active season. Average weight increased slowly through the summer, from a minimum of 346 g, until mid-August when 190 g accumulated in 3 weeks to be used subsequently during the 220-day hibernation season beginning in mid-September. During hibernation, the 325-g loss in weight represents 62% lipid, 26% water, 9% protein, and 2% mineral. Fat in lipid provides most of the energy but insufficient amounts of carbon for glucose synthesis during hibernation. However, protein provides an adequate gluconeogenic reserve. Significant loss of mineral indicates that skeletal reserves of calcium are important during hibernation. After hibernation, continued loss of weight by females indicates further utilization of reserves during gestation and nursing. |
format |
Article in Journal/Newspaper |
author |
Galster, William Morrison, Peter |
spellingShingle |
Galster, William Morrison, Peter Seasonal changes in body composition of the arctic ground squirrel, Citellus undulatus |
author_facet |
Galster, William Morrison, Peter |
author_sort |
Galster, William |
title |
Seasonal changes in body composition of the arctic ground squirrel, Citellus undulatus |
title_short |
Seasonal changes in body composition of the arctic ground squirrel, Citellus undulatus |
title_full |
Seasonal changes in body composition of the arctic ground squirrel, Citellus undulatus |
title_fullStr |
Seasonal changes in body composition of the arctic ground squirrel, Citellus undulatus |
title_full_unstemmed |
Seasonal changes in body composition of the arctic ground squirrel, Citellus undulatus |
title_sort |
seasonal changes in body composition of the arctic ground squirrel, citellus undulatus |
publisher |
Canadian Science Publishing |
publishDate |
1976 |
url |
http://dx.doi.org/10.1139/z76-008 http://www.nrcresearchpress.com/doi/pdf/10.1139/z76-008 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic ground squirrel Arctic |
genre_facet |
Arctic ground squirrel Arctic |
op_source |
Canadian Journal of Zoology volume 54, issue 1, page 74-78 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z76-008 |
container_title |
Canadian Journal of Zoology |
container_volume |
54 |
container_issue |
1 |
container_start_page |
74 |
op_container_end_page |
78 |
_version_ |
1811634163673989120 |