Growth rate and body size differences in Rangifer, a study of causes and effects
The paper discusses growth rate- and body size differences in Rangifer; their causes and effects. Growth rates and autumn body weights vary considerably both within and between Rangifer subspecies. The variation measured is within limits found in animals of same genetical stock subjected to differen...
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Language: | English |
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Septentrio Academic Publishing
1983
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Online Access: | https://doi.org/10.7557/2.3.1.463 https://doaj.org/article/85ddd6a33dad4cedac878207db289fea |
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ftdoajarticles:oai:doaj.org/article:85ddd6a33dad4cedac878207db289fea 2023-05-15T15:53:33+02:00 Growth rate and body size differences in Rangifer, a study of causes and effects Eigil Reimers 1983-05-01T00:00:00Z https://doi.org/10.7557/2.3.1.463 https://doaj.org/article/85ddd6a33dad4cedac878207db289fea EN eng Septentrio Academic Publishing https://septentrio.uit.no/index.php/rangifer/article/view/463 https://doaj.org/toc/1890-6729 doi:10.7557/2.3.1.463 1890-6729 https://doaj.org/article/85ddd6a33dad4cedac878207db289fea Rangifer, Vol 3, Iss 1 (1983) reindeer Rangifer growth rate size differences Animal culture SF1-1100 article 1983 ftdoajarticles https://doi.org/10.7557/2.3.1.463 2022-12-31T06:42:16Z The paper discusses growth rate- and body size differences in Rangifer; their causes and effects. Growth rates and autumn body weights vary considerably both within and between Rangifer subspecies. The variation measured is within limits found in animals of same genetical stock subjected to different environments. Reproductive age, pregnancy rate, calving time and mortality either are or may be functionally related to autumn body weights. The differences in growth rates and body size among Rangifer in different areas are caused primarily by differences in environmental factors during the summer, including stress. The quality of the winter pastures has a minor effect on the body size in areas where the summer conditions allow the animals to grow at their maximum rate. In areas where maximum growth rates for various reasons are counteracted, severely overgrazed winter pastures will contribute to reduced body size. Stress in the terms of human disturbance, insects and predators and the effect on Rangifer activity pattern and hence on growth rates and body size need to be more thoroughly dealt with. Forskjeller i vekst og størrelse hos Rangifer, en studie over årsaker og virkninger. Abstract in Norwegian / Sammendrag: Arbeidet diskuterer årsaker til og virkninger av vekst- og størrelsesforskjeller hos Rangifer. Vekst og høstvekter varierer betydelig både innen og mellom de enkelte Æangj/er-underartene. Variasjonene er imidlertid ikke større enn de som er beskrevet i bestander med samme genetiske utgangspunkt og utsatt for ulike miljøforhold. Alder ved kjønnsmodning, drektighetsfrekvens, kalvingstid og dødelighet er eller synes å være relatert til høstvektene. Vekst-og størrelsesforskjeller hos rein og caribou i ulike områder skyldes i første rekke forskjeller i miljøfaktorene om sommeren, stress inkludert. Kvaliteten av vinterbeitene har liten effekt på kroppsstørrelse i områder hvor forholdene sommerstid tillater maksimal veksthastighet. I områder hvor dette av forskjellige grunner ikke skjer, vil sterkt ... Article in Journal/Newspaper caribou Rangifer Directory of Open Access Journals: DOAJ Articles Synes ENVELOPE(6.028,6.028,62.538,62.538) Rangifer 3 1 3 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
reindeer Rangifer growth rate size differences Animal culture SF1-1100 |
spellingShingle |
reindeer Rangifer growth rate size differences Animal culture SF1-1100 Eigil Reimers Growth rate and body size differences in Rangifer, a study of causes and effects |
topic_facet |
reindeer Rangifer growth rate size differences Animal culture SF1-1100 |
description |
The paper discusses growth rate- and body size differences in Rangifer; their causes and effects. Growth rates and autumn body weights vary considerably both within and between Rangifer subspecies. The variation measured is within limits found in animals of same genetical stock subjected to different environments. Reproductive age, pregnancy rate, calving time and mortality either are or may be functionally related to autumn body weights. The differences in growth rates and body size among Rangifer in different areas are caused primarily by differences in environmental factors during the summer, including stress. The quality of the winter pastures has a minor effect on the body size in areas where the summer conditions allow the animals to grow at their maximum rate. In areas where maximum growth rates for various reasons are counteracted, severely overgrazed winter pastures will contribute to reduced body size. Stress in the terms of human disturbance, insects and predators and the effect on Rangifer activity pattern and hence on growth rates and body size need to be more thoroughly dealt with. Forskjeller i vekst og størrelse hos Rangifer, en studie over årsaker og virkninger. Abstract in Norwegian / Sammendrag: Arbeidet diskuterer årsaker til og virkninger av vekst- og størrelsesforskjeller hos Rangifer. Vekst og høstvekter varierer betydelig både innen og mellom de enkelte Æangj/er-underartene. Variasjonene er imidlertid ikke større enn de som er beskrevet i bestander med samme genetiske utgangspunkt og utsatt for ulike miljøforhold. Alder ved kjønnsmodning, drektighetsfrekvens, kalvingstid og dødelighet er eller synes å være relatert til høstvektene. Vekst-og størrelsesforskjeller hos rein og caribou i ulike områder skyldes i første rekke forskjeller i miljøfaktorene om sommeren, stress inkludert. Kvaliteten av vinterbeitene har liten effekt på kroppsstørrelse i områder hvor forholdene sommerstid tillater maksimal veksthastighet. I områder hvor dette av forskjellige grunner ikke skjer, vil sterkt ... |
format |
Article in Journal/Newspaper |
author |
Eigil Reimers |
author_facet |
Eigil Reimers |
author_sort |
Eigil Reimers |
title |
Growth rate and body size differences in Rangifer, a study of causes and effects |
title_short |
Growth rate and body size differences in Rangifer, a study of causes and effects |
title_full |
Growth rate and body size differences in Rangifer, a study of causes and effects |
title_fullStr |
Growth rate and body size differences in Rangifer, a study of causes and effects |
title_full_unstemmed |
Growth rate and body size differences in Rangifer, a study of causes and effects |
title_sort |
growth rate and body size differences in rangifer, a study of causes and effects |
publisher |
Septentrio Academic Publishing |
publishDate |
1983 |
url |
https://doi.org/10.7557/2.3.1.463 https://doaj.org/article/85ddd6a33dad4cedac878207db289fea |
long_lat |
ENVELOPE(6.028,6.028,62.538,62.538) |
geographic |
Synes |
geographic_facet |
Synes |
genre |
caribou Rangifer |
genre_facet |
caribou Rangifer |
op_source |
Rangifer, Vol 3, Iss 1 (1983) |
op_relation |
https://septentrio.uit.no/index.php/rangifer/article/view/463 https://doaj.org/toc/1890-6729 doi:10.7557/2.3.1.463 1890-6729 https://doaj.org/article/85ddd6a33dad4cedac878207db289fea |
op_doi |
https://doi.org/10.7557/2.3.1.463 |
container_title |
Rangifer |
container_volume |
3 |
container_issue |
1 |
container_start_page |
3 |
_version_ |
1766388647821574144 |