Origin and maintenance of genetic diversity in northern European sheep
Abstract The Nordic and Baltic countries and North-western Russia have >20 old native sheep breeds. These together with recently synthesized breeds and local populations of international breeds make up the northern European sheep diversity. Changes in agriculture threaten to erode genetic diversi...
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University of Oulu
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ftunivoulu:oai:oulu.fi:isbn951-42-8235-3 2023-07-30T04:05:45+02:00 Origin and maintenance of genetic diversity in northern European sheep Tapio, M. (Miika) 2006-11-01 application/pdf http://urn.fi/urn:isbn:9514282353 eng eng University of Oulu info:eu-repo/semantics/altIdentifier/pissn/0355-3191 info:eu-repo/semantics/altIdentifier/eissn/1796-220X info:eu-repo/semantics/openAccess © University of Oulu, 2006 Ovis aries conservation domestic animals genetic marker info:eu-repo/semantics/doctoralThesis info:eu-repo/semantics/publishedVersion 2006 ftunivoulu 2023-07-08T20:01:20Z Abstract The Nordic and Baltic countries and North-western Russia have >20 old native sheep breeds. These together with recently synthesized breeds and local populations of international breeds make up the northern European sheep diversity. Changes in agriculture threaten to erode genetic diversity in sheep. Molecular genetic variation was assessed to understand genetic diversity in northern European sheep. Distribution of maternal lineages were studied based on mitochondrial control region variation in 76 sheep breeds in northern Europe and in a wide neighbouring area extending to the Caucasus and Central-Asia. Autosomal microsatellite variation was studied in 37 northern European breeds, and autosomal blood protein variation was studied in six Finnish and Russian breeds. Four distinct maternal lineages were observed in Eurasian sheep. Their distribution agrees with sheep expansion starting from the Near East. Two most common distinct lineages were recorded in northern Europe. Majority of northern sheep have the lineage, which predominates in other parts of Europe. Results suggest that the main maternal origin of northern sheep is in the south. However, rare “Asian” lineage was observed in several old northern European breeds. The rare type in the Nordic sheep is descendant to the type observed in the Middle Volga region, which suggest that some sheep were brought to northern Europe from the east. Microsatellites showed clustering of geographically neighbouring sheep, when breed locations are corrected for the recent transportations. The analysis separated long and short-tailed sheep, although this macroscale structure explains a small proportion of breed differences. Differentiation among the northern European breeds is stronger than typically observed in sheep. Many native breeds are less inbred than the local populations of the international breeds, but some rare breeds and subpopulations of divided unofficial strains were inbred. Some breeds require more careful maintenance due to recent population size ... Doctoral or Postdoctoral Thesis North-Western Russia Jultika - University of Oulu repository |
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Jultika - University of Oulu repository |
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English |
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Ovis aries conservation domestic animals genetic marker |
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Ovis aries conservation domestic animals genetic marker Tapio, M. (Miika) Origin and maintenance of genetic diversity in northern European sheep |
topic_facet |
Ovis aries conservation domestic animals genetic marker |
description |
Abstract The Nordic and Baltic countries and North-western Russia have >20 old native sheep breeds. These together with recently synthesized breeds and local populations of international breeds make up the northern European sheep diversity. Changes in agriculture threaten to erode genetic diversity in sheep. Molecular genetic variation was assessed to understand genetic diversity in northern European sheep. Distribution of maternal lineages were studied based on mitochondrial control region variation in 76 sheep breeds in northern Europe and in a wide neighbouring area extending to the Caucasus and Central-Asia. Autosomal microsatellite variation was studied in 37 northern European breeds, and autosomal blood protein variation was studied in six Finnish and Russian breeds. Four distinct maternal lineages were observed in Eurasian sheep. Their distribution agrees with sheep expansion starting from the Near East. Two most common distinct lineages were recorded in northern Europe. Majority of northern sheep have the lineage, which predominates in other parts of Europe. Results suggest that the main maternal origin of northern sheep is in the south. However, rare “Asian” lineage was observed in several old northern European breeds. The rare type in the Nordic sheep is descendant to the type observed in the Middle Volga region, which suggest that some sheep were brought to northern Europe from the east. Microsatellites showed clustering of geographically neighbouring sheep, when breed locations are corrected for the recent transportations. The analysis separated long and short-tailed sheep, although this macroscale structure explains a small proportion of breed differences. Differentiation among the northern European breeds is stronger than typically observed in sheep. Many native breeds are less inbred than the local populations of the international breeds, but some rare breeds and subpopulations of divided unofficial strains were inbred. Some breeds require more careful maintenance due to recent population size ... |
format |
Doctoral or Postdoctoral Thesis |
author |
Tapio, M. (Miika) |
author_facet |
Tapio, M. (Miika) |
author_sort |
Tapio, M. (Miika) |
title |
Origin and maintenance of genetic diversity in northern European sheep |
title_short |
Origin and maintenance of genetic diversity in northern European sheep |
title_full |
Origin and maintenance of genetic diversity in northern European sheep |
title_fullStr |
Origin and maintenance of genetic diversity in northern European sheep |
title_full_unstemmed |
Origin and maintenance of genetic diversity in northern European sheep |
title_sort |
origin and maintenance of genetic diversity in northern european sheep |
publisher |
University of Oulu |
publishDate |
2006 |
url |
http://urn.fi/urn:isbn:9514282353 |
genre |
North-Western Russia |
genre_facet |
North-Western Russia |
op_relation |
info:eu-repo/semantics/altIdentifier/pissn/0355-3191 info:eu-repo/semantics/altIdentifier/eissn/1796-220X |
op_rights |
info:eu-repo/semantics/openAccess © University of Oulu, 2006 |
_version_ |
1772817875303661568 |