RESEARCH NOTE Polar bears (Ursus maritimus) mating during late June on the
Polar bears are seasonal breeders and typically mate from late March to early May. Implantation is, however, delayed until autumn, which can allow plas-ticity in the date of mating. As for other seasonal breeders, a rapid return to estrus after the loss of dependent offspring can be expected, even i...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.683.3778 2023-05-15T15:04:18+02:00 RESEARCH NOTE Polar bears (Ursus maritimus) mating during late June on the Thomas G. Smith Jon Aars The Pennsylvania State University CiteSeerX Archives http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.683.3778 http://www.polarresearch.net/index.php/polar/article/download/25786/pdf_12/ en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.683.3778 http://www.polarresearch.net/index.php/polar/article/download/25786/pdf_12/ Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.polarresearch.net/index.php/polar/article/download/25786/pdf_12/ mating season mating behaviour Svalbard Arctic text ftciteseerx 2016-01-08T18:00:14Z Polar bears are seasonal breeders and typically mate from late March to early May. Implantation is, however, delayed until autumn, which can allow plas-ticity in the date of mating. As for other seasonal breeders, a rapid return to estrus after the loss of dependent offspring can be expected, even into the summer. A few earlier observations and dissections of dead animals suggest that polar bears are able to mate in summer. We report on a mating incident on 29 June 2014, the first documented mating this late in the season among wild polar bears. The female had lost her dependent cub during the period prior to the mating event. We speculate that she lost this cub late in the mating season, entered estrus and successfully mated in late June. As is common among mammals, seven out of the eight bear species exhibit distinct birth and mating seasonality (Spady et al. 2007). Almost 100 mammal species, in seven mammalian orders, are known to undergo delayed Text Arctic Svalbard Ursus maritimus Unknown Arctic Svalbard |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
topic |
mating season mating behaviour Svalbard Arctic |
spellingShingle |
mating season mating behaviour Svalbard Arctic Thomas G. Smith Jon Aars RESEARCH NOTE Polar bears (Ursus maritimus) mating during late June on the |
topic_facet |
mating season mating behaviour Svalbard Arctic |
description |
Polar bears are seasonal breeders and typically mate from late March to early May. Implantation is, however, delayed until autumn, which can allow plas-ticity in the date of mating. As for other seasonal breeders, a rapid return to estrus after the loss of dependent offspring can be expected, even into the summer. A few earlier observations and dissections of dead animals suggest that polar bears are able to mate in summer. We report on a mating incident on 29 June 2014, the first documented mating this late in the season among wild polar bears. The female had lost her dependent cub during the period prior to the mating event. We speculate that she lost this cub late in the mating season, entered estrus and successfully mated in late June. As is common among mammals, seven out of the eight bear species exhibit distinct birth and mating seasonality (Spady et al. 2007). Almost 100 mammal species, in seven mammalian orders, are known to undergo delayed |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Thomas G. Smith Jon Aars |
author_facet |
Thomas G. Smith Jon Aars |
author_sort |
Thomas G. Smith |
title |
RESEARCH NOTE Polar bears (Ursus maritimus) mating during late June on the |
title_short |
RESEARCH NOTE Polar bears (Ursus maritimus) mating during late June on the |
title_full |
RESEARCH NOTE Polar bears (Ursus maritimus) mating during late June on the |
title_fullStr |
RESEARCH NOTE Polar bears (Ursus maritimus) mating during late June on the |
title_full_unstemmed |
RESEARCH NOTE Polar bears (Ursus maritimus) mating during late June on the |
title_sort |
research note polar bears (ursus maritimus) mating during late june on the |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.683.3778 http://www.polarresearch.net/index.php/polar/article/download/25786/pdf_12/ |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Svalbard Ursus maritimus |
genre_facet |
Arctic Svalbard Ursus maritimus |
op_source |
http://www.polarresearch.net/index.php/polar/article/download/25786/pdf_12/ |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.683.3778 http://www.polarresearch.net/index.php/polar/article/download/25786/pdf_12/ |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766336098294824960 |