Increases in body weight and nutritional status of transplanted Alaskan caribou
Body weight and natality rate in ungulates can be useful indices to nutririon, bur they may also be influenced by genetic and climatic factors. Because caribou {Rangifer tarandus granti) are distributed as discrete populations of metapopulations (i.e., herds) that are usually reproductively isolated...
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Septentrio Academic Publishing
2000
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ftdoajarticles:oai:doaj.org/article:3051418d3f7f4cc59121742c7071090c 2023-05-15T15:53:28+02:00 Increases in body weight and nutritional status of transplanted Alaskan caribou Patrick Valkenburg Ted H. Spraker Michael T. Hinkes Lawrence H. Van Daele Robert W. Tobey Richard A. Sellers 2000-04-01T00:00:00Z https://doi.org/10.7557/2.20.5.1638 https://doaj.org/article/3051418d3f7f4cc59121742c7071090c EN eng Septentrio Academic Publishing https://septentrio.uit.no/index.php/rangifer/article/view/1638 https://doaj.org/toc/1890-6729 doi:10.7557/2.20.5.1638 1890-6729 https://doaj.org/article/3051418d3f7f4cc59121742c7071090c Rangifer, Vol 20, Iss 5 (2000) caribou body weight natality Rangifer tarandus granti Animal culture SF1-1100 article 2000 ftdoajarticles https://doi.org/10.7557/2.20.5.1638 2022-12-31T05:21:18Z Body weight and natality rate in ungulates can be useful indices to nutririon, bur they may also be influenced by genetic and climatic factors. Because caribou {Rangifer tarandus granti) are distributed as discrete populations of metapopulations (i.e., herds) that are usually reproductively isolated from each other for unknown periods, it is difficult to separate the influence of genetics and nutrition on body weight, especially where historical data are lacking. To help elucidate the influence of nutrition on potential variation in body weight and natality of caribou in Alaska, we reviewed data for body weight and natality in 5 populations which resulted from Transplants to previously ungrazed ranges, or to areas where reindeer and caribou had been absent for many decades. In 2 of 5 populations body weight increased significantly, and likely increased in the other 3 populations, but data were insufficient. Natality rate increased in all 5 populations, proportion of fecund yearlings was high and 3 of the 5 newly established herds increased at about the maximum biological potential for the species (lambda=1.35). In the Adak transplant, a lactating yearling was documented. These 5 transplanted populations provide additional evidence that body weight and natality rate in Alaskan caribou are sensitive to changes in population density and relatively short-term (i.e., 10 years) increases in grazing pressure independenr of climate and genetics. Article in Journal/Newspaper caribou Rangifer Rangifer tarandus Alaska Directory of Open Access Journals: DOAJ Articles Lambda ENVELOPE(-62.983,-62.983,-64.300,-64.300) Adak ENVELOPE(59.561,59.561,66.502,66.502) Rangifer 20 5 133 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
caribou body weight natality Rangifer tarandus granti Animal culture SF1-1100 |
spellingShingle |
caribou body weight natality Rangifer tarandus granti Animal culture SF1-1100 Patrick Valkenburg Ted H. Spraker Michael T. Hinkes Lawrence H. Van Daele Robert W. Tobey Richard A. Sellers Increases in body weight and nutritional status of transplanted Alaskan caribou |
topic_facet |
caribou body weight natality Rangifer tarandus granti Animal culture SF1-1100 |
description |
Body weight and natality rate in ungulates can be useful indices to nutririon, bur they may also be influenced by genetic and climatic factors. Because caribou {Rangifer tarandus granti) are distributed as discrete populations of metapopulations (i.e., herds) that are usually reproductively isolated from each other for unknown periods, it is difficult to separate the influence of genetics and nutrition on body weight, especially where historical data are lacking. To help elucidate the influence of nutrition on potential variation in body weight and natality of caribou in Alaska, we reviewed data for body weight and natality in 5 populations which resulted from Transplants to previously ungrazed ranges, or to areas where reindeer and caribou had been absent for many decades. In 2 of 5 populations body weight increased significantly, and likely increased in the other 3 populations, but data were insufficient. Natality rate increased in all 5 populations, proportion of fecund yearlings was high and 3 of the 5 newly established herds increased at about the maximum biological potential for the species (lambda=1.35). In the Adak transplant, a lactating yearling was documented. These 5 transplanted populations provide additional evidence that body weight and natality rate in Alaskan caribou are sensitive to changes in population density and relatively short-term (i.e., 10 years) increases in grazing pressure independenr of climate and genetics. |
format |
Article in Journal/Newspaper |
author |
Patrick Valkenburg Ted H. Spraker Michael T. Hinkes Lawrence H. Van Daele Robert W. Tobey Richard A. Sellers |
author_facet |
Patrick Valkenburg Ted H. Spraker Michael T. Hinkes Lawrence H. Van Daele Robert W. Tobey Richard A. Sellers |
author_sort |
Patrick Valkenburg |
title |
Increases in body weight and nutritional status of transplanted Alaskan caribou |
title_short |
Increases in body weight and nutritional status of transplanted Alaskan caribou |
title_full |
Increases in body weight and nutritional status of transplanted Alaskan caribou |
title_fullStr |
Increases in body weight and nutritional status of transplanted Alaskan caribou |
title_full_unstemmed |
Increases in body weight and nutritional status of transplanted Alaskan caribou |
title_sort |
increases in body weight and nutritional status of transplanted alaskan caribou |
publisher |
Septentrio Academic Publishing |
publishDate |
2000 |
url |
https://doi.org/10.7557/2.20.5.1638 https://doaj.org/article/3051418d3f7f4cc59121742c7071090c |
long_lat |
ENVELOPE(-62.983,-62.983,-64.300,-64.300) ENVELOPE(59.561,59.561,66.502,66.502) |
geographic |
Lambda Adak |
geographic_facet |
Lambda Adak |
genre |
caribou Rangifer Rangifer tarandus Alaska |
genre_facet |
caribou Rangifer Rangifer tarandus Alaska |
op_source |
Rangifer, Vol 20, Iss 5 (2000) |
op_relation |
https://septentrio.uit.no/index.php/rangifer/article/view/1638 https://doaj.org/toc/1890-6729 doi:10.7557/2.20.5.1638 1890-6729 https://doaj.org/article/3051418d3f7f4cc59121742c7071090c |
op_doi |
https://doi.org/10.7557/2.20.5.1638 |
container_title |
Rangifer |
container_volume |
20 |
container_issue |
5 |
container_start_page |
133 |
_version_ |
1766388575821103104 |