Recent speciation and hybridization in Icelandic deep‐sea isopods: An integrative approach using genomics and proteomics

Abstract The crustacean marine isopod species Haploniscus bicuspis (Sars, 1877) shows circum‐Icelandic distribution in a wide range of environmental conditions and along well‐known geographic barriers, such as the Greenland‐Iceland‐Faroe (GIF) Ridge. We wanted to explore population genetics, phyloge...

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Published in:Molecular Ecology
Main Authors: Paulus, Eva, Brix, Saskia, Siebert, Annabelle, Martínez Arbizu, Pedro, Rossel, Sven, Peters, Janna, Svavarsson, Jörundur, Schwentner, Martin
Other Authors: Deutsche Forschungsgemeinschaft
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 2021
Subjects:
Online Access:http://dx.doi.org/10.1111/mec.16234
https://onlinelibrary.wiley.com/doi/pdf/10.1111/mec.16234
https://onlinelibrary.wiley.com/doi/full-xml/10.1111/mec.16234
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spelling crwiley:10.1111/mec.16234 2024-09-09T19:43:27+00:00 Recent speciation and hybridization in Icelandic deep‐sea isopods: An integrative approach using genomics and proteomics Paulus, Eva Brix, Saskia Siebert, Annabelle Martínez Arbizu, Pedro Rossel, Sven Peters, Janna Svavarsson, Jörundur Schwentner, Martin Deutsche Forschungsgemeinschaft 2021 http://dx.doi.org/10.1111/mec.16234 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mec.16234 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/mec.16234 en eng Wiley http://creativecommons.org/licenses/by-nc/4.0/ Molecular Ecology volume 31, issue 1, page 313-330 ISSN 0962-1083 1365-294X journal-article 2021 crwiley https://doi.org/10.1111/mec.16234 2024-08-09T04:22:51Z Abstract The crustacean marine isopod species Haploniscus bicuspis (Sars, 1877) shows circum‐Icelandic distribution in a wide range of environmental conditions and along well‐known geographic barriers, such as the Greenland‐Iceland‐Faroe (GIF) Ridge. We wanted to explore population genetics, phylogeography and cryptic speciation as well as investigate whether previously described, but unaccepted subspecies have any merit. Using the same set of specimens, we combined mitochondrial COI sequences, thousands of nuclear loci (ddRAD), and proteomic profiles, plus selected morphological characters using confocal laser scanning microscopy (CLSM). Five divergent genetic lineages were identified by COI and ddRAD, two south and three north of the GIF Ridge. Assignment of populations to the three northern lineages varied and detailed analyses revealed hybridization and gene flow between them, suggesting a single northern species with a complex phylogeographic history. No apparent hybridization was observed among lineages south of the GIF Ridge, inferring the existence of two more species. Differences in proteomic profiles between the three putative species were minimal, implying an ongoing or recent speciation process. Population differentiation was high, even among closely associated populations, and higher in mitochondrial COI than nuclear ddRAD loci. Gene flow is apparently male‐biased, leading to hybrid zones and instances of complete exchange of the local nuclear genome through immigrating males. This study did not confirm the existence of subspecies defined by male characters, which probably instead refer to different male developmental stages. Article in Journal/Newspaper Greenland Iceland Wiley Online Library Greenland Molecular Ecology 31 1 313 330
institution Open Polar
collection Wiley Online Library
op_collection_id crwiley
language English
description Abstract The crustacean marine isopod species Haploniscus bicuspis (Sars, 1877) shows circum‐Icelandic distribution in a wide range of environmental conditions and along well‐known geographic barriers, such as the Greenland‐Iceland‐Faroe (GIF) Ridge. We wanted to explore population genetics, phylogeography and cryptic speciation as well as investigate whether previously described, but unaccepted subspecies have any merit. Using the same set of specimens, we combined mitochondrial COI sequences, thousands of nuclear loci (ddRAD), and proteomic profiles, plus selected morphological characters using confocal laser scanning microscopy (CLSM). Five divergent genetic lineages were identified by COI and ddRAD, two south and three north of the GIF Ridge. Assignment of populations to the three northern lineages varied and detailed analyses revealed hybridization and gene flow between them, suggesting a single northern species with a complex phylogeographic history. No apparent hybridization was observed among lineages south of the GIF Ridge, inferring the existence of two more species. Differences in proteomic profiles between the three putative species were minimal, implying an ongoing or recent speciation process. Population differentiation was high, even among closely associated populations, and higher in mitochondrial COI than nuclear ddRAD loci. Gene flow is apparently male‐biased, leading to hybrid zones and instances of complete exchange of the local nuclear genome through immigrating males. This study did not confirm the existence of subspecies defined by male characters, which probably instead refer to different male developmental stages.
author2 Deutsche Forschungsgemeinschaft
format Article in Journal/Newspaper
author Paulus, Eva
Brix, Saskia
Siebert, Annabelle
Martínez Arbizu, Pedro
Rossel, Sven
Peters, Janna
Svavarsson, Jörundur
Schwentner, Martin
spellingShingle Paulus, Eva
Brix, Saskia
Siebert, Annabelle
Martínez Arbizu, Pedro
Rossel, Sven
Peters, Janna
Svavarsson, Jörundur
Schwentner, Martin
Recent speciation and hybridization in Icelandic deep‐sea isopods: An integrative approach using genomics and proteomics
author_facet Paulus, Eva
Brix, Saskia
Siebert, Annabelle
Martínez Arbizu, Pedro
Rossel, Sven
Peters, Janna
Svavarsson, Jörundur
Schwentner, Martin
author_sort Paulus, Eva
title Recent speciation and hybridization in Icelandic deep‐sea isopods: An integrative approach using genomics and proteomics
title_short Recent speciation and hybridization in Icelandic deep‐sea isopods: An integrative approach using genomics and proteomics
title_full Recent speciation and hybridization in Icelandic deep‐sea isopods: An integrative approach using genomics and proteomics
title_fullStr Recent speciation and hybridization in Icelandic deep‐sea isopods: An integrative approach using genomics and proteomics
title_full_unstemmed Recent speciation and hybridization in Icelandic deep‐sea isopods: An integrative approach using genomics and proteomics
title_sort recent speciation and hybridization in icelandic deep‐sea isopods: an integrative approach using genomics and proteomics
publisher Wiley
publishDate 2021
url http://dx.doi.org/10.1111/mec.16234
https://onlinelibrary.wiley.com/doi/pdf/10.1111/mec.16234
https://onlinelibrary.wiley.com/doi/full-xml/10.1111/mec.16234
geographic Greenland
geographic_facet Greenland
genre Greenland
Iceland
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Iceland
op_source Molecular Ecology
volume 31, issue 1, page 313-330
ISSN 0962-1083 1365-294X
op_rights http://creativecommons.org/licenses/by-nc/4.0/
op_doi https://doi.org/10.1111/mec.16234
container_title Molecular Ecology
container_volume 31
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