Sexual Dimorphism of Polar Bears
Sexual dimorphism in body mass, body length, head width, head length, and foreleg guard hair length of polar bears ( Ursus maritimus ) was examined from live-captured polar bears in Svalbard, Norway. Limited evidence of sexual dimorphism was apparent in cubs shortly after den emergence but was marke...
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fthighwire:oai:open-archive.highwire.org:jmammal:86/5/895 2023-05-15T18:29:46+02:00 Sexual Dimorphism of Polar Bears Derocher, Andrew E. Andersen, Magnus Wiig, Øystein 2005-10-20 00:00:00.0 text/html http://jmammal.oxfordjournals.org/cgi/content/short/86/5/895 https://doi.org/10.1644/1545-1542(2005)86[895:SDOPB]2.0.CO;2 en eng Oxford University Press http://jmammal.oxfordjournals.org/cgi/content/short/86/5/895 http://dx.doi.org/10.1644/1545-1542(2005)86[895:SDOPB]2.0.CO;2 Copyright (C) 2005, Oxford University Press Feature Articles TEXT 2005 fthighwire https://doi.org/10.1644/1545-1542(2005)86[895:SDOPB]2.0.CO;2 2018-04-07T06:26:03Z Sexual dimorphism in body mass, body length, head width, head length, and foreleg guard hair length of polar bears ( Ursus maritimus ) was examined from live-captured polar bears in Svalbard, Norway. Limited evidence of sexual dimorphism was apparent in cubs shortly after den emergence but was marked after the 1st year of life. Sexual dimorphism in adults resulted from both a higher growth rate and prolonged growth period in males. In mature animals, sexual dimorphism was greatest in mass, followed by foreleg guard hair length, head width, body length, and head length. Foreleg guard hair length was age related and hypothesized to be a form of ornamentation. Geographic variation in sexual dimorphism was evident for mass and body length for seven different populations but there was no evidence of a hyperallometric relationship in sexual dimorphism. Text Svalbard Ursus maritimus HighWire Press (Stanford University) Svalbard Norway |
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HighWire Press (Stanford University) |
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English |
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Feature Articles |
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Feature Articles Derocher, Andrew E. Andersen, Magnus Wiig, Øystein Sexual Dimorphism of Polar Bears |
topic_facet |
Feature Articles |
description |
Sexual dimorphism in body mass, body length, head width, head length, and foreleg guard hair length of polar bears ( Ursus maritimus ) was examined from live-captured polar bears in Svalbard, Norway. Limited evidence of sexual dimorphism was apparent in cubs shortly after den emergence but was marked after the 1st year of life. Sexual dimorphism in adults resulted from both a higher growth rate and prolonged growth period in males. In mature animals, sexual dimorphism was greatest in mass, followed by foreleg guard hair length, head width, body length, and head length. Foreleg guard hair length was age related and hypothesized to be a form of ornamentation. Geographic variation in sexual dimorphism was evident for mass and body length for seven different populations but there was no evidence of a hyperallometric relationship in sexual dimorphism. |
format |
Text |
author |
Derocher, Andrew E. Andersen, Magnus Wiig, Øystein |
author_facet |
Derocher, Andrew E. Andersen, Magnus Wiig, Øystein |
author_sort |
Derocher, Andrew E. |
title |
Sexual Dimorphism of Polar Bears |
title_short |
Sexual Dimorphism of Polar Bears |
title_full |
Sexual Dimorphism of Polar Bears |
title_fullStr |
Sexual Dimorphism of Polar Bears |
title_full_unstemmed |
Sexual Dimorphism of Polar Bears |
title_sort |
sexual dimorphism of polar bears |
publisher |
Oxford University Press |
publishDate |
2005 |
url |
http://jmammal.oxfordjournals.org/cgi/content/short/86/5/895 https://doi.org/10.1644/1545-1542(2005)86[895:SDOPB]2.0.CO;2 |
geographic |
Svalbard Norway |
geographic_facet |
Svalbard Norway |
genre |
Svalbard Ursus maritimus |
genre_facet |
Svalbard Ursus maritimus |
op_relation |
http://jmammal.oxfordjournals.org/cgi/content/short/86/5/895 http://dx.doi.org/10.1644/1545-1542(2005)86[895:SDOPB]2.0.CO;2 |
op_rights |
Copyright (C) 2005, Oxford University Press |
op_doi |
https://doi.org/10.1644/1545-1542(2005)86[895:SDOPB]2.0.CO;2 |
_version_ |
1766213122034499584 |