Travelling in time with networks: Revealing present day hybridization versus ancestral polymorphism between two species of brown algae, Fucus vesiculosus and F. spiralis
Abstract Background Hybridization or divergence between sympatric sister species provides a natural laboratory to study speciation processes. The shared polymorphism in sister species may either be ancestral or derive from hybridization, and the accuracy of analytic methods used thus far to derive c...
Published in: | BMC Evolutionary Biology |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
BMC
2011
|
Subjects: | |
Online Access: | https://doi.org/10.1186/1471-2148-11-33 https://doaj.org/article/408c38b0bb7449839d56c2671d23bcca |
id |
ftdoajarticles:oai:doaj.org/article:408c38b0bb7449839d56c2671d23bcca |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:408c38b0bb7449839d56c2671d23bcca 2023-05-15T17:34:36+02:00 Travelling in time with networks: Revealing present day hybridization versus ancestral polymorphism between two species of brown algae, Fucus vesiculosus and F. spiralis Pearson Gareth A Perrin Cécile Arnaud-Haond Sophie Moalic Yann Serrao Ester A 2011-01-01T00:00:00Z https://doi.org/10.1186/1471-2148-11-33 https://doaj.org/article/408c38b0bb7449839d56c2671d23bcca EN eng BMC http://www.biomedcentral.com/1471-2148/11/33 https://doaj.org/toc/1471-2148 doi:10.1186/1471-2148-11-33 1471-2148 https://doaj.org/article/408c38b0bb7449839d56c2671d23bcca BMC Evolutionary Biology, Vol 11, Iss 1, p 33 (2011) Evolution QH359-425 article 2011 ftdoajarticles https://doi.org/10.1186/1471-2148-11-33 2022-12-31T16:16:10Z Abstract Background Hybridization or divergence between sympatric sister species provides a natural laboratory to study speciation processes. The shared polymorphism in sister species may either be ancestral or derive from hybridization, and the accuracy of analytic methods used thus far to derive convincing evidence for the occurrence of present day hybridization is largely debated. Results Here we propose the application of network analysis to test for the occurrence of present day hybridization between the two species of brown algae Fucus spiralis and F. vesiculosus . Individual-centered networks were analyzed on the basis of microsatellite genotypes from North Africa to the Pacific American coast, through the North Atlantic. Two genetic distances integrating different time steps were used, the Rozenfeld (RD; based on alleles divergence) and the Shared Allele (SAD; based on alleles identity) distances. A diagnostic level of genotype divergence and clustering of individuals from each species was obtained through RD while screening for exchanges through putative hybridization was facilitated using SAD. Intermediate individuals linking both clusters on the RD network were those sampled at the limits of the sympatric zone in Northwest Iberia. Conclusion These results suggesting rare hybridization were confirmed by simulation of hybrids and F2 with directed backcrosses. Comparison with the Bayesian method STRUCTURE confirmed the usefulness of both approaches and emphasized the reliability of network analysis to unravel and study hybridization Article in Journal/Newspaper North Atlantic Directory of Open Access Journals: DOAJ Articles Pacific BMC Evolutionary Biology 11 1 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Evolution QH359-425 |
spellingShingle |
Evolution QH359-425 Pearson Gareth A Perrin Cécile Arnaud-Haond Sophie Moalic Yann Serrao Ester A Travelling in time with networks: Revealing present day hybridization versus ancestral polymorphism between two species of brown algae, Fucus vesiculosus and F. spiralis |
topic_facet |
Evolution QH359-425 |
description |
Abstract Background Hybridization or divergence between sympatric sister species provides a natural laboratory to study speciation processes. The shared polymorphism in sister species may either be ancestral or derive from hybridization, and the accuracy of analytic methods used thus far to derive convincing evidence for the occurrence of present day hybridization is largely debated. Results Here we propose the application of network analysis to test for the occurrence of present day hybridization between the two species of brown algae Fucus spiralis and F. vesiculosus . Individual-centered networks were analyzed on the basis of microsatellite genotypes from North Africa to the Pacific American coast, through the North Atlantic. Two genetic distances integrating different time steps were used, the Rozenfeld (RD; based on alleles divergence) and the Shared Allele (SAD; based on alleles identity) distances. A diagnostic level of genotype divergence and clustering of individuals from each species was obtained through RD while screening for exchanges through putative hybridization was facilitated using SAD. Intermediate individuals linking both clusters on the RD network were those sampled at the limits of the sympatric zone in Northwest Iberia. Conclusion These results suggesting rare hybridization were confirmed by simulation of hybrids and F2 with directed backcrosses. Comparison with the Bayesian method STRUCTURE confirmed the usefulness of both approaches and emphasized the reliability of network analysis to unravel and study hybridization |
format |
Article in Journal/Newspaper |
author |
Pearson Gareth A Perrin Cécile Arnaud-Haond Sophie Moalic Yann Serrao Ester A |
author_facet |
Pearson Gareth A Perrin Cécile Arnaud-Haond Sophie Moalic Yann Serrao Ester A |
author_sort |
Pearson Gareth A |
title |
Travelling in time with networks: Revealing present day hybridization versus ancestral polymorphism between two species of brown algae, Fucus vesiculosus and F. spiralis |
title_short |
Travelling in time with networks: Revealing present day hybridization versus ancestral polymorphism between two species of brown algae, Fucus vesiculosus and F. spiralis |
title_full |
Travelling in time with networks: Revealing present day hybridization versus ancestral polymorphism between two species of brown algae, Fucus vesiculosus and F. spiralis |
title_fullStr |
Travelling in time with networks: Revealing present day hybridization versus ancestral polymorphism between two species of brown algae, Fucus vesiculosus and F. spiralis |
title_full_unstemmed |
Travelling in time with networks: Revealing present day hybridization versus ancestral polymorphism between two species of brown algae, Fucus vesiculosus and F. spiralis |
title_sort |
travelling in time with networks: revealing present day hybridization versus ancestral polymorphism between two species of brown algae, fucus vesiculosus and f. spiralis |
publisher |
BMC |
publishDate |
2011 |
url |
https://doi.org/10.1186/1471-2148-11-33 https://doaj.org/article/408c38b0bb7449839d56c2671d23bcca |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
BMC Evolutionary Biology, Vol 11, Iss 1, p 33 (2011) |
op_relation |
http://www.biomedcentral.com/1471-2148/11/33 https://doaj.org/toc/1471-2148 doi:10.1186/1471-2148-11-33 1471-2148 https://doaj.org/article/408c38b0bb7449839d56c2671d23bcca |
op_doi |
https://doi.org/10.1186/1471-2148-11-33 |
container_title |
BMC Evolutionary Biology |
container_volume |
11 |
container_issue |
1 |
_version_ |
1766133492512456704 |