Distribution of sex and age groups of ringed seals Pusa hispida in the fast-ice breeding habitat of Kongsfjorden, Svalbard
Spatial distribution of various age- and sex groups of ringed seals (N = 94; 19 adult males, 33 adult females and 42 subadults) was studied in their fast-ice breeding habitat in Kongsfjorden, Svalbard, during May 2004. Adult females occupied the inner, most stable ice area, while subadults were foun...
Published in: | Marine Ecology Progress Series |
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Language: | English |
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2007
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Online Access: | http://hdl.handle.net/11250/108736 https://doi.org/10.3354/meps335199 |
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ftimr:oai:imr.brage.unit.no:11250/108736 2023-05-15T17:05:14+02:00 Distribution of sex and age groups of ringed seals Pusa hispida in the fast-ice breeding habitat of Kongsfjorden, Svalbard Krafft, Bjørn A. Kovacs, Kit M. Lydersen, Christian 2007-04-16 application/pdf http://hdl.handle.net/11250/108736 https://doi.org/10.3354/meps335199 eng eng Inter-Research urn:issn:0171-8630 urn:issn:1616-1599 http://hdl.handle.net/11250/108736 http://dx.doi.org/10.3354/meps335199 199-206 335 Marine Ecology Progress Series seal sel VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Aquaculture: 922 Journal article Peer reviewed 2007 ftimr https://doi.org/10.3354/meps335199 2021-09-23T20:15:55Z Spatial distribution of various age- and sex groups of ringed seals (N = 94; 19 adult males, 33 adult females and 42 subadults) was studied in their fast-ice breeding habitat in Kongsfjorden, Svalbard, during May 2004. Adult females occupied the inner, most stable ice area, while subadults were found predominantly in the outer parts of the fast-ice, where the ice conditions are more unstable. Adult males were scattered across these 2 areas; some were intermingled with breeding females while others were found further out towards the ice edge in areas mainly dominated by subadults. This pattern suggests territorial behaviour with competitive exclusion of the subadults and adult males that cannot compete for territories in the prime breeding areas. The size of adult males was correlated with their testosterone levels, but it was not necessarily the largest males that had the most adult female neighbors. The adult males that had the most adult female neighbors were however significantly older than the adult males with fewer female neighbors (18 ± 1 vs. 12 ± 1 yr). This suggests that experience (age) likely plays a strong role in achieving reproductive success for male ringed seals. A male:female sex ratio of 1:2.4 was found in the prime breeding area, which suggests a slightly polygynous mating system. Article in Journal/Newspaper Kongsfjord* Kongsfjorden Pusa hispida Svalbard Institute for Marine Research: Brage IMR Svalbard Marine Ecology Progress Series 335 199 206 |
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Open Polar |
collection |
Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
English |
topic |
seal sel VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Aquaculture: 922 |
spellingShingle |
seal sel VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Aquaculture: 922 Krafft, Bjørn A. Kovacs, Kit M. Lydersen, Christian Distribution of sex and age groups of ringed seals Pusa hispida in the fast-ice breeding habitat of Kongsfjorden, Svalbard |
topic_facet |
seal sel VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Aquaculture: 922 |
description |
Spatial distribution of various age- and sex groups of ringed seals (N = 94; 19 adult males, 33 adult females and 42 subadults) was studied in their fast-ice breeding habitat in Kongsfjorden, Svalbard, during May 2004. Adult females occupied the inner, most stable ice area, while subadults were found predominantly in the outer parts of the fast-ice, where the ice conditions are more unstable. Adult males were scattered across these 2 areas; some were intermingled with breeding females while others were found further out towards the ice edge in areas mainly dominated by subadults. This pattern suggests territorial behaviour with competitive exclusion of the subadults and adult males that cannot compete for territories in the prime breeding areas. The size of adult males was correlated with their testosterone levels, but it was not necessarily the largest males that had the most adult female neighbors. The adult males that had the most adult female neighbors were however significantly older than the adult males with fewer female neighbors (18 ± 1 vs. 12 ± 1 yr). This suggests that experience (age) likely plays a strong role in achieving reproductive success for male ringed seals. A male:female sex ratio of 1:2.4 was found in the prime breeding area, which suggests a slightly polygynous mating system. |
format |
Article in Journal/Newspaper |
author |
Krafft, Bjørn A. Kovacs, Kit M. Lydersen, Christian |
author_facet |
Krafft, Bjørn A. Kovacs, Kit M. Lydersen, Christian |
author_sort |
Krafft, Bjørn A. |
title |
Distribution of sex and age groups of ringed seals Pusa hispida in the fast-ice breeding habitat of Kongsfjorden, Svalbard |
title_short |
Distribution of sex and age groups of ringed seals Pusa hispida in the fast-ice breeding habitat of Kongsfjorden, Svalbard |
title_full |
Distribution of sex and age groups of ringed seals Pusa hispida in the fast-ice breeding habitat of Kongsfjorden, Svalbard |
title_fullStr |
Distribution of sex and age groups of ringed seals Pusa hispida in the fast-ice breeding habitat of Kongsfjorden, Svalbard |
title_full_unstemmed |
Distribution of sex and age groups of ringed seals Pusa hispida in the fast-ice breeding habitat of Kongsfjorden, Svalbard |
title_sort |
distribution of sex and age groups of ringed seals pusa hispida in the fast-ice breeding habitat of kongsfjorden, svalbard |
publisher |
Inter-Research |
publishDate |
2007 |
url |
http://hdl.handle.net/11250/108736 https://doi.org/10.3354/meps335199 |
geographic |
Svalbard |
geographic_facet |
Svalbard |
genre |
Kongsfjord* Kongsfjorden Pusa hispida Svalbard |
genre_facet |
Kongsfjord* Kongsfjorden Pusa hispida Svalbard |
op_source |
199-206 335 Marine Ecology Progress Series |
op_relation |
urn:issn:0171-8630 urn:issn:1616-1599 http://hdl.handle.net/11250/108736 http://dx.doi.org/10.3354/meps335199 |
op_doi |
https://doi.org/10.3354/meps335199 |
container_title |
Marine Ecology Progress Series |
container_volume |
335 |
container_start_page |
199 |
op_container_end_page |
206 |
_version_ |
1766059672821825536 |