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Complex spatial clonal structure in the macroalgae Fucus radicans with both sexual and asexual recruitment
In dioecious species with both sexual and asexual reproduction, the spatial distribution of individual clones affects the potential for sexual reproduction and local adaptation. The seaweed Fucus radicans, endemic to the Baltic Sea, has separate sexes, but new attached thalli may also form asexually...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4667831/ https://www.ncbi.nlm.nih.gov/pubmed/26664675 http://dx.doi.org/10.1002/ece3.1629 |
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author | Ardehed, Angelica Johansson, Daniel Schagerström, Ellen Kautsky, Lena Johannesson, Kerstin Pereyra, Ricardo T. |
author_facet | Ardehed, Angelica Johansson, Daniel Schagerström, Ellen Kautsky, Lena Johannesson, Kerstin Pereyra, Ricardo T. |
author_sort | Ardehed, Angelica |
collection | PubMed |
description | In dioecious species with both sexual and asexual reproduction, the spatial distribution of individual clones affects the potential for sexual reproduction and local adaptation. The seaweed Fucus radicans, endemic to the Baltic Sea, has separate sexes, but new attached thalli may also form asexually. We mapped the spatial distribution of clones (multilocus genotypes, MLGs) over macrogeographic (>500 km) and microgeographic (<100 m) scales in the Baltic Sea to assess the relationship between clonal spatial structure, sexual recruitment, and the potential for natural selection. Sexual recruitment was predominant in some areas, while in others asexual recruitment dominated. Where clones of both sexes were locally intermingled, sexual recruitment was nevertheless low. In some highly clonal populations, the sex ratio was strongly skewed due to dominance of one or a few clones of the same sex. The two largest clones (one female and one male) were distributed over 100–550 km of coast and accompanied by small and local MLGs formed by somatic mutations and differing by 1–2 mutations from the large clones. Rare sexual events, occasional long‐distance migration, and somatic mutations contribute new genotypic variation potentially available to natural selection. However, dominance of a few very large (and presumably old) clones over extensive spatial and temporal scales suggested that either these have superior traits or natural selection has only been marginally involved in the structuring of genotypes. |
format | Online Article Text |
id | pubmed-4667831 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-46678312015-12-10 Complex spatial clonal structure in the macroalgae Fucus radicans with both sexual and asexual recruitment Ardehed, Angelica Johansson, Daniel Schagerström, Ellen Kautsky, Lena Johannesson, Kerstin Pereyra, Ricardo T. Ecol Evol Original Research In dioecious species with both sexual and asexual reproduction, the spatial distribution of individual clones affects the potential for sexual reproduction and local adaptation. The seaweed Fucus radicans, endemic to the Baltic Sea, has separate sexes, but new attached thalli may also form asexually. We mapped the spatial distribution of clones (multilocus genotypes, MLGs) over macrogeographic (>500 km) and microgeographic (<100 m) scales in the Baltic Sea to assess the relationship between clonal spatial structure, sexual recruitment, and the potential for natural selection. Sexual recruitment was predominant in some areas, while in others asexual recruitment dominated. Where clones of both sexes were locally intermingled, sexual recruitment was nevertheless low. In some highly clonal populations, the sex ratio was strongly skewed due to dominance of one or a few clones of the same sex. The two largest clones (one female and one male) were distributed over 100–550 km of coast and accompanied by small and local MLGs formed by somatic mutations and differing by 1–2 mutations from the large clones. Rare sexual events, occasional long‐distance migration, and somatic mutations contribute new genotypic variation potentially available to natural selection. However, dominance of a few very large (and presumably old) clones over extensive spatial and temporal scales suggested that either these have superior traits or natural selection has only been marginally involved in the structuring of genotypes. John Wiley and Sons Inc. 2015-09-09 /pmc/articles/PMC4667831/ /pubmed/26664675 http://dx.doi.org/10.1002/ece3.1629 Text en © 2015 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution (http://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Original Research Ardehed, Angelica Johansson, Daniel Schagerström, Ellen Kautsky, Lena Johannesson, Kerstin Pereyra, Ricardo T. Complex spatial clonal structure in the macroalgae Fucus radicans with both sexual and asexual recruitment |
title | Complex spatial clonal structure in the macroalgae Fucus radicans with both sexual and asexual recruitment |
title_full | Complex spatial clonal structure in the macroalgae Fucus radicans with both sexual and asexual recruitment |
title_fullStr | Complex spatial clonal structure in the macroalgae Fucus radicans with both sexual and asexual recruitment |
title_full_unstemmed | Complex spatial clonal structure in the macroalgae Fucus radicans with both sexual and asexual recruitment |
title_short | Complex spatial clonal structure in the macroalgae Fucus radicans with both sexual and asexual recruitment |
title_sort | complex spatial clonal structure in the macroalgae fucus radicans with both sexual and asexual recruitment |
topic | Original Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4667831/ https://www.ncbi.nlm.nih.gov/pubmed/26664675 http://dx.doi.org/10.1002/ece3.1629 |
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