The impact of founder events and introductions on genetic variation in the muskox Ovibos moschatus
The muskox is an ungulate that is well adapted to severe arctic conditions. Native populations are today found in northern Canada, the Canadian archipelago and on the northeastern coast of Greenland. Throughout its existence the muskox has been subject to many fluctuations in population size, bot...
| Autor principal: | |
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| Formato: | L3 |
| Lenguaje: | Inglés |
| Publicado: |
SLU/Dept. of Wildlife, Fish and Environmental Studies
2008
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| Materias: |
| _version_ | 1855572028476620800 |
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| author | Englund, Linda |
| author_browse | Englund, Linda |
| author_facet | Englund, Linda |
| author_sort | Englund, Linda |
| collection | Epsilon Archive for Student Projects |
| description | The muskox is an ungulate that is well adapted to severe arctic conditions. Native
populations are today found in northern Canada, the Canadian archipelago and on the
northeastern coast of Greenland. Throughout its existence the muskox has been subject to
many fluctuations in population size, both due to changing climate and intensive hunting
during the hide trade in the 18- and 1900's. However, small refugia have persisted,
allowing the muskox to increase in numbers again. In addition, introductions and
translocations of the muskox around the Arctic have allowed the species to colonise new
territories such as west Greenland and Norway. In 1971 five muskoxen left Norway and
founded a population in Härjedalen, Sweden. Today (2008) the Swedish population
consists of seven individuals. When trying to reinforce the genetic variation within the
population one cow was mated with a captive Greenlandic bull, which resulted in a calf in
2006. To find out how muskox populations have been affected by sequential founder events
muskox samples from the Canadian archipelago, east and west Greenland, Norway and
Sweden were studied, using highly variable microsatellite markers. The result shows that
the allelic variation follows the expectations of the founder events where Canada has the
highest variation, followed by Greenland. However, the Swedish population has more
genetic variation than Norway. This is explained by the contribution of two new alleles by
the half-Greenlandic calf, indicating that one individual can make a large impact regarding
the genetic variation. Also, the zoo population contains a higher degree of genetic variation
than many of the introduced populations, revealing the importance of preserving the
breeding programmes in zoos. |
| format | L3 |
| id | RepoSLU12250 |
| institution | Swedish University of Agricultural Sciences |
| language | Inglés |
| publishDate | 2008 |
| publishDateSort | 2008 |
| publisher | SLU/Dept. of Wildlife, Fish and Environmental Studies |
| publisherStr | SLU/Dept. of Wildlife, Fish and Environmental Studies |
| record_format | eprints |
| spelling | RepoSLU122502017-11-01T12:34:10Z The impact of founder events and introductions on genetic variation in the muskox Ovibos moschatus Englund, Linda Canadian archipelago genetic variation Greenland introductions management microsatellites muskox Norway Ovibos moschatus sequential founder events Sweden The muskox is an ungulate that is well adapted to severe arctic conditions. Native populations are today found in northern Canada, the Canadian archipelago and on the northeastern coast of Greenland. Throughout its existence the muskox has been subject to many fluctuations in population size, both due to changing climate and intensive hunting during the hide trade in the 18- and 1900's. However, small refugia have persisted, allowing the muskox to increase in numbers again. In addition, introductions and translocations of the muskox around the Arctic have allowed the species to colonise new territories such as west Greenland and Norway. In 1971 five muskoxen left Norway and founded a population in Härjedalen, Sweden. Today (2008) the Swedish population consists of seven individuals. When trying to reinforce the genetic variation within the population one cow was mated with a captive Greenlandic bull, which resulted in a calf in 2006. To find out how muskox populations have been affected by sequential founder events muskox samples from the Canadian archipelago, east and west Greenland, Norway and Sweden were studied, using highly variable microsatellite markers. The result shows that the allelic variation follows the expectations of the founder events where Canada has the highest variation, followed by Greenland. However, the Swedish population has more genetic variation than Norway. This is explained by the contribution of two new alleles by the half-Greenlandic calf, indicating that one individual can make a large impact regarding the genetic variation. Also, the zoo population contains a higher degree of genetic variation than many of the introduced populations, revealing the importance of preserving the breeding programmes in zoos. SLU/Dept. of Wildlife, Fish and Environmental Studies 2008 L3 eng https://stud.epsilon.slu.se/12250/ |
| spellingShingle | Canadian archipelago genetic variation Greenland introductions management microsatellites muskox Norway Ovibos moschatus sequential founder events Sweden Englund, Linda The impact of founder events and introductions on genetic variation in the muskox Ovibos moschatus |
| title | The impact of founder events and introductions on genetic variation in the muskox Ovibos moschatus |
| title_full | The impact of founder events and introductions on genetic variation in the muskox Ovibos moschatus |
| title_fullStr | The impact of founder events and introductions on genetic variation in the muskox Ovibos moschatus |
| title_full_unstemmed | The impact of founder events and introductions on genetic variation in the muskox Ovibos moschatus |
| title_short | The impact of founder events and introductions on genetic variation in the muskox Ovibos moschatus |
| title_sort | impact of founder events and introductions on genetic variation in the muskox ovibos moschatus |
| topic | Canadian archipelago genetic variation Greenland introductions management microsatellites muskox Norway Ovibos moschatus sequential founder events Sweden |