Limited gene flow among brown bear populations in far Northern Europe? Genetic analysis of the east–west border population in the Pasvik Valley
Abstract Noninvasively collected genetic data can be used to analyse large‐scale connectivity patterns among populations of large predators without disturbing them, which may contribute to unravel the species’ roles in natural ecosystems and their requirements for long‐term survival. The demographic...
Published in: | Molecular Ecology |
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Online Access: | http://dx.doi.org/10.1111/j.1365-294x.2012.05631.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-294X.2012.05631.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-294X.2012.05631.x |
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crwiley:10.1111/j.1365-294x.2012.05631.x 2024-06-02T08:09:45+00:00 Limited gene flow among brown bear populations in far Northern Europe? Genetic analysis of the east–west border population in the Pasvik Valley SCHREGEL, JULIA KOPATZ, ALEXANDER HAGEN, SNORRE B. BRØSETH, HENRIK SMITH, MARTIN E. WIKAN, STEINAR WARTIAINEN, INGVILD ASPHOLM, PAUL E. ASPI, JOUNI SWENSON, JON E. MAKAROVA, OLGA POLIKARPOVA, NATALIA SCHNEIDER, MICHAEL KNAPPSKOG, PER M. RUOKONEN, MINNA KOJOLA, ILPO TIRRONEN, KONSTANTIN F. DANILOV, PJOTR I. EIKEN, HANS GEIR 2012 http://dx.doi.org/10.1111/j.1365-294x.2012.05631.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-294X.2012.05631.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-294X.2012.05631.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor http://doi.wiley.com/10.1002/tdm_license_1.1 Molecular Ecology volume 21, issue 14, page 3474-3488 ISSN 0962-1083 1365-294X journal-article 2012 crwiley https://doi.org/10.1111/j.1365-294x.2012.05631.x 2024-05-03T11:44:04Z Abstract Noninvasively collected genetic data can be used to analyse large‐scale connectivity patterns among populations of large predators without disturbing them, which may contribute to unravel the species’ roles in natural ecosystems and their requirements for long‐term survival. The demographic history of brown bears ( Ursus arctos ) in Northern Europe indicates several extinction and recolonization events, but little is known about present gene flow between populations of the east and west. We used 12 validated microsatellite markers to analyse 1580 hair and faecal samples collected during six consecutive years (2005–2010) in the Pasvik Valley at 70°N on the border of Norway, Finland and Russia. Our results showed an overall high correlation between the annual estimates of population size ( N c ), density ( D ), effective size ( N e ) and N e / N c ratio. Furthermore, we observed a genetic heterogeneity of ∼0.8 and high N e / N c ratios of ∼0.6, which suggests gene flow from the east. Thus, we expanded the population genetic study to include Karelia (Russia, Finland), Västerbotten (Sweden) and Troms (Norway) (477 individuals in total) and detected four distinct genetic clusters with low migration rates among the regions. More specifically, we found that differentiation was relatively low from the Pasvik Valley towards the south and east, whereas, in contrast, moderately high pairwise F ST values (0.91–0.12) were detected between the east and the west. Our results indicate ongoing limits to gene flow towards the west, and the existence of barriers to migration between eastern and western brown bear populations in Northern Europe. Article in Journal/Newspaper karelia* karelia* Pasvik Ursus arctos Troms Wiley Online Library Norway Pasvik ENVELOPE(30.580,30.580,69.810,69.810) Molecular Ecology 21 14 3474 3488 |
institution |
Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Noninvasively collected genetic data can be used to analyse large‐scale connectivity patterns among populations of large predators without disturbing them, which may contribute to unravel the species’ roles in natural ecosystems and their requirements for long‐term survival. The demographic history of brown bears ( Ursus arctos ) in Northern Europe indicates several extinction and recolonization events, but little is known about present gene flow between populations of the east and west. We used 12 validated microsatellite markers to analyse 1580 hair and faecal samples collected during six consecutive years (2005–2010) in the Pasvik Valley at 70°N on the border of Norway, Finland and Russia. Our results showed an overall high correlation between the annual estimates of population size ( N c ), density ( D ), effective size ( N e ) and N e / N c ratio. Furthermore, we observed a genetic heterogeneity of ∼0.8 and high N e / N c ratios of ∼0.6, which suggests gene flow from the east. Thus, we expanded the population genetic study to include Karelia (Russia, Finland), Västerbotten (Sweden) and Troms (Norway) (477 individuals in total) and detected four distinct genetic clusters with low migration rates among the regions. More specifically, we found that differentiation was relatively low from the Pasvik Valley towards the south and east, whereas, in contrast, moderately high pairwise F ST values (0.91–0.12) were detected between the east and the west. Our results indicate ongoing limits to gene flow towards the west, and the existence of barriers to migration between eastern and western brown bear populations in Northern Europe. |
format |
Article in Journal/Newspaper |
author |
SCHREGEL, JULIA KOPATZ, ALEXANDER HAGEN, SNORRE B. BRØSETH, HENRIK SMITH, MARTIN E. WIKAN, STEINAR WARTIAINEN, INGVILD ASPHOLM, PAUL E. ASPI, JOUNI SWENSON, JON E. MAKAROVA, OLGA POLIKARPOVA, NATALIA SCHNEIDER, MICHAEL KNAPPSKOG, PER M. RUOKONEN, MINNA KOJOLA, ILPO TIRRONEN, KONSTANTIN F. DANILOV, PJOTR I. EIKEN, HANS GEIR |
spellingShingle |
SCHREGEL, JULIA KOPATZ, ALEXANDER HAGEN, SNORRE B. BRØSETH, HENRIK SMITH, MARTIN E. WIKAN, STEINAR WARTIAINEN, INGVILD ASPHOLM, PAUL E. ASPI, JOUNI SWENSON, JON E. MAKAROVA, OLGA POLIKARPOVA, NATALIA SCHNEIDER, MICHAEL KNAPPSKOG, PER M. RUOKONEN, MINNA KOJOLA, ILPO TIRRONEN, KONSTANTIN F. DANILOV, PJOTR I. EIKEN, HANS GEIR Limited gene flow among brown bear populations in far Northern Europe? Genetic analysis of the east–west border population in the Pasvik Valley |
author_facet |
SCHREGEL, JULIA KOPATZ, ALEXANDER HAGEN, SNORRE B. BRØSETH, HENRIK SMITH, MARTIN E. WIKAN, STEINAR WARTIAINEN, INGVILD ASPHOLM, PAUL E. ASPI, JOUNI SWENSON, JON E. MAKAROVA, OLGA POLIKARPOVA, NATALIA SCHNEIDER, MICHAEL KNAPPSKOG, PER M. RUOKONEN, MINNA KOJOLA, ILPO TIRRONEN, KONSTANTIN F. DANILOV, PJOTR I. EIKEN, HANS GEIR |
author_sort |
SCHREGEL, JULIA |
title |
Limited gene flow among brown bear populations in far Northern Europe? Genetic analysis of the east–west border population in the Pasvik Valley |
title_short |
Limited gene flow among brown bear populations in far Northern Europe? Genetic analysis of the east–west border population in the Pasvik Valley |
title_full |
Limited gene flow among brown bear populations in far Northern Europe? Genetic analysis of the east–west border population in the Pasvik Valley |
title_fullStr |
Limited gene flow among brown bear populations in far Northern Europe? Genetic analysis of the east–west border population in the Pasvik Valley |
title_full_unstemmed |
Limited gene flow among brown bear populations in far Northern Europe? Genetic analysis of the east–west border population in the Pasvik Valley |
title_sort |
limited gene flow among brown bear populations in far northern europe? genetic analysis of the east–west border population in the pasvik valley |
publisher |
Wiley |
publishDate |
2012 |
url |
http://dx.doi.org/10.1111/j.1365-294x.2012.05631.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-294X.2012.05631.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-294X.2012.05631.x |
long_lat |
ENVELOPE(30.580,30.580,69.810,69.810) |
geographic |
Norway Pasvik |
geographic_facet |
Norway Pasvik |
genre |
karelia* karelia* Pasvik Ursus arctos Troms |
genre_facet |
karelia* karelia* Pasvik Ursus arctos Troms |
op_source |
Molecular Ecology volume 21, issue 14, page 3474-3488 ISSN 0962-1083 1365-294X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor http://doi.wiley.com/10.1002/tdm_license_1.1 |
op_doi |
https://doi.org/10.1111/j.1365-294x.2012.05631.x |
container_title |
Molecular Ecology |
container_volume |
21 |
container_issue |
14 |
container_start_page |
3474 |
op_container_end_page |
3488 |
_version_ |
1800755533209141248 |