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Speciation Progress: A Case Study on the Bushcricket Poecilimon veluchianus
Different mechanisms such as selection or genetic drift permitted e.g. by geographical isolation can lead to differentiation of populations and could cause subsequent speciation. The two subspecies of Poecilimon veluchianus, a bushcricket endemic to central Greece, show a parapatric distribution and...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4593647/ https://www.ncbi.nlm.nih.gov/pubmed/26436732 http://dx.doi.org/10.1371/journal.pone.0139494 |
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author | Eweleit, Lucienne Reinhold, Klaus Sauer, Jan |
author_facet | Eweleit, Lucienne Reinhold, Klaus Sauer, Jan |
author_sort | Eweleit, Lucienne |
collection | PubMed |
description | Different mechanisms such as selection or genetic drift permitted e.g. by geographical isolation can lead to differentiation of populations and could cause subsequent speciation. The two subspecies of Poecilimon veluchianus, a bushcricket endemic to central Greece, show a parapatric distribution and are partially reproductively isolated. Therefore, P. veluchianus is suitable to investigate an ongoing speciation process. We based our analysis on sequences of the internal transcribed spacer (ITS) and the mitochondrial control region (CR). The population genetic analysis based on the nuclear marker ITS revealed a barrier to gene flow within the range of Poecilimon veluchianus, which corresponds well to the described subspecies. In contrast to the results based on the nuclear ITS marker, the mitochondrial CR marker does not clearly support the separation into two subspecies with restricted gene flow and a clear contact zone. Furthermore, we could identify isolation by distance (IBD) as one important mechanism responsible for the observed genetic structure (based on the ITS marker). The population genetic analysis based on the nuclear marker ITS also suggests the existence of hybrids in the wild. Furthermore, the simultaneous lack of strong prezygotic barriers and the presence of postzygotic mating barriers, observed in previous laboratory experiments, suggest that a secondary contact after an allopatric phase is more likely than parapatric speciation. |
format | Online Article Text |
id | pubmed-4593647 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-45936472015-10-14 Speciation Progress: A Case Study on the Bushcricket Poecilimon veluchianus Eweleit, Lucienne Reinhold, Klaus Sauer, Jan PLoS One Research Article Different mechanisms such as selection or genetic drift permitted e.g. by geographical isolation can lead to differentiation of populations and could cause subsequent speciation. The two subspecies of Poecilimon veluchianus, a bushcricket endemic to central Greece, show a parapatric distribution and are partially reproductively isolated. Therefore, P. veluchianus is suitable to investigate an ongoing speciation process. We based our analysis on sequences of the internal transcribed spacer (ITS) and the mitochondrial control region (CR). The population genetic analysis based on the nuclear marker ITS revealed a barrier to gene flow within the range of Poecilimon veluchianus, which corresponds well to the described subspecies. In contrast to the results based on the nuclear ITS marker, the mitochondrial CR marker does not clearly support the separation into two subspecies with restricted gene flow and a clear contact zone. Furthermore, we could identify isolation by distance (IBD) as one important mechanism responsible for the observed genetic structure (based on the ITS marker). The population genetic analysis based on the nuclear marker ITS also suggests the existence of hybrids in the wild. Furthermore, the simultaneous lack of strong prezygotic barriers and the presence of postzygotic mating barriers, observed in previous laboratory experiments, suggest that a secondary contact after an allopatric phase is more likely than parapatric speciation. Public Library of Science 2015-10-05 /pmc/articles/PMC4593647/ /pubmed/26436732 http://dx.doi.org/10.1371/journal.pone.0139494 Text en © 2015 Eweleit et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. |
spellingShingle | Research Article Eweleit, Lucienne Reinhold, Klaus Sauer, Jan Speciation Progress: A Case Study on the Bushcricket Poecilimon veluchianus |
title | Speciation Progress: A Case Study on the Bushcricket Poecilimon veluchianus
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title_full | Speciation Progress: A Case Study on the Bushcricket Poecilimon veluchianus
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title_fullStr | Speciation Progress: A Case Study on the Bushcricket Poecilimon veluchianus
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title_full_unstemmed | Speciation Progress: A Case Study on the Bushcricket Poecilimon veluchianus
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title_short | Speciation Progress: A Case Study on the Bushcricket Poecilimon veluchianus
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title_sort | speciation progress: a case study on the bushcricket poecilimon veluchianus |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4593647/ https://www.ncbi.nlm.nih.gov/pubmed/26436732 http://dx.doi.org/10.1371/journal.pone.0139494 |
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