Genetic and phenotypic variation of the moose (Alces alces)
Abstract Spatial and temporal variation is a universal feature in most organisms in nature, commonly reflecting the past evolutionary history of the species as well as the prevailing environmental conditions. The purpose of this doctoral thesis study was to investigate the genetic and phenotypic var...
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Oulun yliopisto
2015
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ftunivoulu:oai:oulu.fi:isbn978-952-62-0980-7 2023-07-30T03:55:46+02:00 Genetic and phenotypic variation of the moose (Alces alces) Kangas, V.-M. (Veli-Matti) Aspi, J. (Jouni) Kvist, L. (Laura) 2015-11-24 application/pdf http://urn.fi/urn:isbn:9789526209807 eng eng Oulun yliopisto info:eu-repo/semantics/altIdentifier/pissn/0355-3191 info:eu-repo/semantics/altIdentifier/eissn/1796-220X info:eu-repo/semantics/openAccess © University of Oulu, 2015 Alces alces genetic diversity genetic structure mandible shape phenotypic variation population bottleneck alaleukaluun muoto fenotyyppinen muuntelu geneettinen monimuotoisuus geneettinen rakenne populaation pullonkaula info:eu-repo/semantics/doctoralThesis info:eu-repo/semantics/publishedVersion 2015 ftunivoulu 2023-07-08T19:53:32Z Abstract Spatial and temporal variation is a universal feature in most organisms in nature, commonly reflecting the past evolutionary history of the species as well as the prevailing environmental conditions. The purpose of this doctoral thesis study was to investigate the genetic and phenotypic variation, and to assess the roles of the different processes affecting them in the moose (Alces alces). Altogether 809 DNA samples of moose, gathered throughout Finland and the Republic of Karelia in Russia, were analysed with a variety of population genetic methods. Furthermore, the shape of the moose mandible was investigated with the help of geometric morphometrics using a subset of samples gathered from 179 moose in Finland. This study showed that the Finnish and especially the Karelian moose population harboured relatively high genetic diversity, albeit with clear regional differences in its spatial distribution. In the northern half of Finland, a secondary contact of two diverged mitochondrial lineages was revealed. The presence of the two lineages was interpreted to reflect the existence of allopatric refugia of moose during the Last Glacial Maximum and the subsequent bi-directional recolonisation of Fennoscandia. Furthermore, a spatially explicit Bayesian clustering analysis suggested existence of three genetic clusters, which were estimated to have split after the post-glacial recolonisation. The results also showed that past declines in the moose numbers during the 18th and 19th centuries led to population bottlenecks, leaving a genetic imprint. Thus, the present moose population in eastern Fennoscandia carries the signs of both ancient and more recent events in its genetic composition. Finally, a significant latitudinal shift was revealed in the shape of the moose mandible. The pattern was considered independent of the genetic clustering of the population. The main changes included an enlargement of the attachment surfaces of the muscles controlling biting and mastication, implying more effective mastication ... Doctoral or Postdoctoral Thesis Alces alces Fennoscandia karelia* karelia* karelian Republic of Karelia Jultika - University of Oulu repository |
institution |
Open Polar |
collection |
Jultika - University of Oulu repository |
op_collection_id |
ftunivoulu |
language |
English |
topic |
Alces alces genetic diversity genetic structure mandible shape phenotypic variation population bottleneck alaleukaluun muoto fenotyyppinen muuntelu geneettinen monimuotoisuus geneettinen rakenne populaation pullonkaula |
spellingShingle |
Alces alces genetic diversity genetic structure mandible shape phenotypic variation population bottleneck alaleukaluun muoto fenotyyppinen muuntelu geneettinen monimuotoisuus geneettinen rakenne populaation pullonkaula Kangas, V.-M. (Veli-Matti) Genetic and phenotypic variation of the moose (Alces alces) |
topic_facet |
Alces alces genetic diversity genetic structure mandible shape phenotypic variation population bottleneck alaleukaluun muoto fenotyyppinen muuntelu geneettinen monimuotoisuus geneettinen rakenne populaation pullonkaula |
description |
Abstract Spatial and temporal variation is a universal feature in most organisms in nature, commonly reflecting the past evolutionary history of the species as well as the prevailing environmental conditions. The purpose of this doctoral thesis study was to investigate the genetic and phenotypic variation, and to assess the roles of the different processes affecting them in the moose (Alces alces). Altogether 809 DNA samples of moose, gathered throughout Finland and the Republic of Karelia in Russia, were analysed with a variety of population genetic methods. Furthermore, the shape of the moose mandible was investigated with the help of geometric morphometrics using a subset of samples gathered from 179 moose in Finland. This study showed that the Finnish and especially the Karelian moose population harboured relatively high genetic diversity, albeit with clear regional differences in its spatial distribution. In the northern half of Finland, a secondary contact of two diverged mitochondrial lineages was revealed. The presence of the two lineages was interpreted to reflect the existence of allopatric refugia of moose during the Last Glacial Maximum and the subsequent bi-directional recolonisation of Fennoscandia. Furthermore, a spatially explicit Bayesian clustering analysis suggested existence of three genetic clusters, which were estimated to have split after the post-glacial recolonisation. The results also showed that past declines in the moose numbers during the 18th and 19th centuries led to population bottlenecks, leaving a genetic imprint. Thus, the present moose population in eastern Fennoscandia carries the signs of both ancient and more recent events in its genetic composition. Finally, a significant latitudinal shift was revealed in the shape of the moose mandible. The pattern was considered independent of the genetic clustering of the population. The main changes included an enlargement of the attachment surfaces of the muscles controlling biting and mastication, implying more effective mastication ... |
author2 |
Aspi, J. (Jouni) Kvist, L. (Laura) |
format |
Doctoral or Postdoctoral Thesis |
author |
Kangas, V.-M. (Veli-Matti) |
author_facet |
Kangas, V.-M. (Veli-Matti) |
author_sort |
Kangas, V.-M. (Veli-Matti) |
title |
Genetic and phenotypic variation of the moose (Alces alces) |
title_short |
Genetic and phenotypic variation of the moose (Alces alces) |
title_full |
Genetic and phenotypic variation of the moose (Alces alces) |
title_fullStr |
Genetic and phenotypic variation of the moose (Alces alces) |
title_full_unstemmed |
Genetic and phenotypic variation of the moose (Alces alces) |
title_sort |
genetic and phenotypic variation of the moose (alces alces) |
publisher |
Oulun yliopisto |
publishDate |
2015 |
url |
http://urn.fi/urn:isbn:9789526209807 |
genre |
Alces alces Fennoscandia karelia* karelia* karelian Republic of Karelia |
genre_facet |
Alces alces Fennoscandia karelia* karelia* karelian Republic of Karelia |
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, 2015 |
_version_ |
1772821475116449792 |