Social organization of reindeer ( Rangifer tarandus ), with special reference to relationships among females
Approximately 130 individually recognized reindeer, plus unidentified calves, were observed over the course of 9 months from the rutting period to the calving period in Finnish Lapland. The level of association among nonrelated females in resting groups fluctuated with the passage of time. Among rel...
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1990
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Online Access: | http://dx.doi.org/10.1139/z90-107 http://www.nrcresearchpress.com/doi/pdf/10.1139/z90-107 |
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crcansciencepubl:10.1139/z90-107 2024-04-07T07:55:35+00:00 Social organization of reindeer ( Rangifer tarandus ), with special reference to relationships among females Hirotani, Akira 1990 http://dx.doi.org/10.1139/z90-107 http://www.nrcresearchpress.com/doi/pdf/10.1139/z90-107 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 68, issue 4, page 743-749 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1990 crcansciencepubl https://doi.org/10.1139/z90-107 2024-03-08T00:37:39Z Approximately 130 individually recognized reindeer, plus unidentified calves, were observed over the course of 9 months from the rutting period to the calving period in Finnish Lapland. The level of association among nonrelated females in resting groups fluctuated with the passage of time. Among related females, only yearling daughters associated significantly with their respective mothers, although coexistence between mothers and yearling daughters was accompanied by antagonism. Two-year-old daughters were next in terms of association with their mothers, whereas daughters of 3 years of age and older rarely associated with their mothers and the level of association decreased to the level observed for nonrelated females. When two herds joined each other, the frequency of antagonistic interactions among foreign individuals was initially quite high. Thereafter, the two herds became united as a new herd within a week or two. A linear dominance hierarchy was found among 90 females that joined the studied herd. Their social rank was correlated with body weight. Thereby, the dominance hierarchy was stably maintained even though the herd itself was a temporary association of individuals. During the nonrutting period, animals segregated themselves by sex. The shedding of male antlers was correlated with drastic changes in ranking. Article in Journal/Newspaper Rangifer tarandus Lapland Canadian Science Publishing Canadian Journal of Zoology 68 4 743 749 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
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Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Hirotani, Akira Social organization of reindeer ( Rangifer tarandus ), with special reference to relationships among females |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Approximately 130 individually recognized reindeer, plus unidentified calves, were observed over the course of 9 months from the rutting period to the calving period in Finnish Lapland. The level of association among nonrelated females in resting groups fluctuated with the passage of time. Among related females, only yearling daughters associated significantly with their respective mothers, although coexistence between mothers and yearling daughters was accompanied by antagonism. Two-year-old daughters were next in terms of association with their mothers, whereas daughters of 3 years of age and older rarely associated with their mothers and the level of association decreased to the level observed for nonrelated females. When two herds joined each other, the frequency of antagonistic interactions among foreign individuals was initially quite high. Thereafter, the two herds became united as a new herd within a week or two. A linear dominance hierarchy was found among 90 females that joined the studied herd. Their social rank was correlated with body weight. Thereby, the dominance hierarchy was stably maintained even though the herd itself was a temporary association of individuals. During the nonrutting period, animals segregated themselves by sex. The shedding of male antlers was correlated with drastic changes in ranking. |
format |
Article in Journal/Newspaper |
author |
Hirotani, Akira |
author_facet |
Hirotani, Akira |
author_sort |
Hirotani, Akira |
title |
Social organization of reindeer ( Rangifer tarandus ), with special reference to relationships among females |
title_short |
Social organization of reindeer ( Rangifer tarandus ), with special reference to relationships among females |
title_full |
Social organization of reindeer ( Rangifer tarandus ), with special reference to relationships among females |
title_fullStr |
Social organization of reindeer ( Rangifer tarandus ), with special reference to relationships among females |
title_full_unstemmed |
Social organization of reindeer ( Rangifer tarandus ), with special reference to relationships among females |
title_sort |
social organization of reindeer ( rangifer tarandus ), with special reference to relationships among females |
publisher |
Canadian Science Publishing |
publishDate |
1990 |
url |
http://dx.doi.org/10.1139/z90-107 http://www.nrcresearchpress.com/doi/pdf/10.1139/z90-107 |
genre |
Rangifer tarandus Lapland |
genre_facet |
Rangifer tarandus Lapland |
op_source |
Canadian Journal of Zoology volume 68, issue 4, page 743-749 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z90-107 |
container_title |
Canadian Journal of Zoology |
container_volume |
68 |
container_issue |
4 |
container_start_page |
743 |
op_container_end_page |
749 |
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1795672839423000576 |