Local adaptation in the presence of gene flow in Patagonian and Antarctic Nacella limpets: a multimarker genetic and physiological approach
The understanding of how speciation works in the ocean has always challenged marine biologists because the marine realm is characterized by the absence of strict barriers to gene flow over large geographical scales. The impact of natural selection as a source of speciation in the marine system has a...
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Universität Bremen
2011
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Online Access: | https://media.suub.uni-bremen.de/handle/elib/202 https://nbn-resolving.org/urn:nbn:de:gbv:46-00102255-16 |
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ftsubbremen:oai:media.suub.uni-bremen.de:Publications/elib/202 2023-05-15T14:04:15+02:00 Local adaptation in the presence of gene flow in Patagonian and Antarctic Nacella limpets: a multimarker genetic and physiological approach Lokale Anpassung in der Gegenwart von Genfluss in patagonischen und antarktischen Napfschnecken der Gattung Nacella: ein genetischer und physiologischer Ansatz Pöhlmann, Kevin Hagen, Wilhelm Abele, Doris 2011-09-26 application/pdf https://media.suub.uni-bremen.de/handle/elib/202 https://nbn-resolving.org/urn:nbn:de:gbv:46-00102255-16 eng eng Universität Bremen FB2 Biologie/Chemie https://media.suub.uni-bremen.de/handle/elib/202 urn:nbn:de:gbv:46-00102255-16 info:eu-repo/semantics/openAccess Allopatric speciation sympatric speciation Nacella magellanica Nacella deaurata Nacella concinna natural selection adaptive divergence local adaptation gene flow microsatellites heat-shock proteins Patagonia Antarctic Peninsula Last Glacial Maximum antioxidant capacities 570 570 Life sciences biology ddc:570 Dissertation doctoralThesis 2011 ftsubbremen 2022-11-09T07:09:18Z The understanding of how speciation works in the ocean has always challenged marine biologists because the marine realm is characterized by the absence of strict barriers to gene flow over large geographical scales. The impact of natural selection as a source of speciation in the marine system has also been considered to be low because of the very high gene flow overriding the effects of locally varying selective pressures. In a top-down approach I analyzed large-scale impacts of emerging geographical barriers and small-scale influences of biogeographic patterning and local adaptations on the evolutionary history of Antarctic and South American Nacella limpets. A large set of genetic and physiological, neutral and selected markers was applied. The results show that natural selection and local adaptation are much more important drivers of marine speciation than previously believed. The application of genetic markers under selection revealed how natural selection is capable to maintain adaptive divergence in parts of a genome to ensure adaptability to environmental constraints even in high gene flow environments. Doctoral or Postdoctoral Thesis Antarc* Antarctic Antarctic Peninsula Antarktis* Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) Antarctic Antarctic Peninsula Nacella ENVELOPE(-60.783,-60.783,-62.467,-62.467) Patagonia |
institution |
Open Polar |
collection |
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) |
op_collection_id |
ftsubbremen |
language |
English |
topic |
Allopatric speciation sympatric speciation Nacella magellanica Nacella deaurata Nacella concinna natural selection adaptive divergence local adaptation gene flow microsatellites heat-shock proteins Patagonia Antarctic Peninsula Last Glacial Maximum antioxidant capacities 570 570 Life sciences biology ddc:570 |
spellingShingle |
Allopatric speciation sympatric speciation Nacella magellanica Nacella deaurata Nacella concinna natural selection adaptive divergence local adaptation gene flow microsatellites heat-shock proteins Patagonia Antarctic Peninsula Last Glacial Maximum antioxidant capacities 570 570 Life sciences biology ddc:570 Pöhlmann, Kevin Local adaptation in the presence of gene flow in Patagonian and Antarctic Nacella limpets: a multimarker genetic and physiological approach |
topic_facet |
Allopatric speciation sympatric speciation Nacella magellanica Nacella deaurata Nacella concinna natural selection adaptive divergence local adaptation gene flow microsatellites heat-shock proteins Patagonia Antarctic Peninsula Last Glacial Maximum antioxidant capacities 570 570 Life sciences biology ddc:570 |
description |
The understanding of how speciation works in the ocean has always challenged marine biologists because the marine realm is characterized by the absence of strict barriers to gene flow over large geographical scales. The impact of natural selection as a source of speciation in the marine system has also been considered to be low because of the very high gene flow overriding the effects of locally varying selective pressures. In a top-down approach I analyzed large-scale impacts of emerging geographical barriers and small-scale influences of biogeographic patterning and local adaptations on the evolutionary history of Antarctic and South American Nacella limpets. A large set of genetic and physiological, neutral and selected markers was applied. The results show that natural selection and local adaptation are much more important drivers of marine speciation than previously believed. The application of genetic markers under selection revealed how natural selection is capable to maintain adaptive divergence in parts of a genome to ensure adaptability to environmental constraints even in high gene flow environments. |
author2 |
Hagen, Wilhelm Abele, Doris |
format |
Doctoral or Postdoctoral Thesis |
author |
Pöhlmann, Kevin |
author_facet |
Pöhlmann, Kevin |
author_sort |
Pöhlmann, Kevin |
title |
Local adaptation in the presence of gene flow in Patagonian and Antarctic Nacella limpets: a multimarker genetic and physiological approach |
title_short |
Local adaptation in the presence of gene flow in Patagonian and Antarctic Nacella limpets: a multimarker genetic and physiological approach |
title_full |
Local adaptation in the presence of gene flow in Patagonian and Antarctic Nacella limpets: a multimarker genetic and physiological approach |
title_fullStr |
Local adaptation in the presence of gene flow in Patagonian and Antarctic Nacella limpets: a multimarker genetic and physiological approach |
title_full_unstemmed |
Local adaptation in the presence of gene flow in Patagonian and Antarctic Nacella limpets: a multimarker genetic and physiological approach |
title_sort |
local adaptation in the presence of gene flow in patagonian and antarctic nacella limpets: a multimarker genetic and physiological approach |
publisher |
Universität Bremen |
publishDate |
2011 |
url |
https://media.suub.uni-bremen.de/handle/elib/202 https://nbn-resolving.org/urn:nbn:de:gbv:46-00102255-16 |
long_lat |
ENVELOPE(-60.783,-60.783,-62.467,-62.467) |
geographic |
Antarctic Antarctic Peninsula Nacella Patagonia |
geographic_facet |
Antarctic Antarctic Peninsula Nacella Patagonia |
genre |
Antarc* Antarctic Antarctic Peninsula Antarktis* |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarktis* |
op_relation |
https://media.suub.uni-bremen.de/handle/elib/202 urn:nbn:de:gbv:46-00102255-16 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766275275586273280 |