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Inter-Specific Genetic Exchange Despite Strong Divergence in Deep-Sea Hydrothermal Vent Gastropods of the Genus Alviniconcha

Deep hydrothermal vents are highly fragmented and unstable habitats at all temporal and spatial scales. Such environmental dynamics likely play a non-negligible role in speciation. Little is, however, known about the evolutionary processes that drive population-level differentiation and vent species...

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Autores principales: Castel, Jade, Hourdez, Stéphane, Pradillon, Florence, Daguin-Thiébaut, Claire, Ballenghien, Marion, Ruault, Stéphanie, Corre, Erwan, Tran Lu Y, Adrien, Mary, Jean, Gagnaire, Pierre-Alexandre, Bonhomme, François, Breusing, Corinna, Broquet, Thomas, Jollivet, Didier
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9223106/
https://www.ncbi.nlm.nih.gov/pubmed/35741747
http://dx.doi.org/10.3390/genes13060985
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author Castel, Jade
Hourdez, Stéphane
Pradillon, Florence
Daguin-Thiébaut, Claire
Ballenghien, Marion
Ruault, Stéphanie
Corre, Erwan
Tran Lu Y, Adrien
Mary, Jean
Gagnaire, Pierre-Alexandre
Bonhomme, François
Breusing, Corinna
Broquet, Thomas
Jollivet, Didier
author_facet Castel, Jade
Hourdez, Stéphane
Pradillon, Florence
Daguin-Thiébaut, Claire
Ballenghien, Marion
Ruault, Stéphanie
Corre, Erwan
Tran Lu Y, Adrien
Mary, Jean
Gagnaire, Pierre-Alexandre
Bonhomme, François
Breusing, Corinna
Broquet, Thomas
Jollivet, Didier
author_sort Castel, Jade
collection PubMed
description Deep hydrothermal vents are highly fragmented and unstable habitats at all temporal and spatial scales. Such environmental dynamics likely play a non-negligible role in speciation. Little is, however, known about the evolutionary processes that drive population-level differentiation and vent species isolation and, more specifically, how geography and habitat specialisation interplay in the species history of divergence. In this study, the species range and divergence of Alviniconcha snails that occupy active Western Pacific vent fields was assessed by using sequence variation data of the mitochondrial Cox1 gene, RNAseq, and ddRAD-seq. Combining morphological description and sequence datasets of the three species across five basins, we confirmed that A. kojimai, A. boucheti, and A. strummeri, while partially overlapping over their range, display high levels of divergence in the three genomic compartments analysed that usually encompass values retrieved for reproductively isolated species with divergences rang from 9% to 12.5% (mtDNA) and from 2% to 3.1% (nuDNA). Moreover, the three species can be distinguished on the basis of their external morphology by observing the distribution of bristles and the shape of the columella. According to this sampling, A. boucheti and A. kojimai form an east-to-west species abundance gradient, whereas A. strummeri is restricted to the Futuna Arc/Lau and North Fiji Basins. Surprisingly, population models with both gene flow and population size heterogeneities among genomes indicated that these three species are still able to exchange genes due to secondary contacts at some localities after a long period of isolation.
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spelling pubmed-92231062022-06-24 Inter-Specific Genetic Exchange Despite Strong Divergence in Deep-Sea Hydrothermal Vent Gastropods of the Genus Alviniconcha Castel, Jade Hourdez, Stéphane Pradillon, Florence Daguin-Thiébaut, Claire Ballenghien, Marion Ruault, Stéphanie Corre, Erwan Tran Lu Y, Adrien Mary, Jean Gagnaire, Pierre-Alexandre Bonhomme, François Breusing, Corinna Broquet, Thomas Jollivet, Didier Genes (Basel) Article Deep hydrothermal vents are highly fragmented and unstable habitats at all temporal and spatial scales. Such environmental dynamics likely play a non-negligible role in speciation. Little is, however, known about the evolutionary processes that drive population-level differentiation and vent species isolation and, more specifically, how geography and habitat specialisation interplay in the species history of divergence. In this study, the species range and divergence of Alviniconcha snails that occupy active Western Pacific vent fields was assessed by using sequence variation data of the mitochondrial Cox1 gene, RNAseq, and ddRAD-seq. Combining morphological description and sequence datasets of the three species across five basins, we confirmed that A. kojimai, A. boucheti, and A. strummeri, while partially overlapping over their range, display high levels of divergence in the three genomic compartments analysed that usually encompass values retrieved for reproductively isolated species with divergences rang from 9% to 12.5% (mtDNA) and from 2% to 3.1% (nuDNA). Moreover, the three species can be distinguished on the basis of their external morphology by observing the distribution of bristles and the shape of the columella. According to this sampling, A. boucheti and A. kojimai form an east-to-west species abundance gradient, whereas A. strummeri is restricted to the Futuna Arc/Lau and North Fiji Basins. Surprisingly, population models with both gene flow and population size heterogeneities among genomes indicated that these three species are still able to exchange genes due to secondary contacts at some localities after a long period of isolation. MDPI 2022-05-31 /pmc/articles/PMC9223106/ /pubmed/35741747 http://dx.doi.org/10.3390/genes13060985 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Castel, Jade
Hourdez, Stéphane
Pradillon, Florence
Daguin-Thiébaut, Claire
Ballenghien, Marion
Ruault, Stéphanie
Corre, Erwan
Tran Lu Y, Adrien
Mary, Jean
Gagnaire, Pierre-Alexandre
Bonhomme, François
Breusing, Corinna
Broquet, Thomas
Jollivet, Didier
Inter-Specific Genetic Exchange Despite Strong Divergence in Deep-Sea Hydrothermal Vent Gastropods of the Genus Alviniconcha
title Inter-Specific Genetic Exchange Despite Strong Divergence in Deep-Sea Hydrothermal Vent Gastropods of the Genus Alviniconcha
title_full Inter-Specific Genetic Exchange Despite Strong Divergence in Deep-Sea Hydrothermal Vent Gastropods of the Genus Alviniconcha
title_fullStr Inter-Specific Genetic Exchange Despite Strong Divergence in Deep-Sea Hydrothermal Vent Gastropods of the Genus Alviniconcha
title_full_unstemmed Inter-Specific Genetic Exchange Despite Strong Divergence in Deep-Sea Hydrothermal Vent Gastropods of the Genus Alviniconcha
title_short Inter-Specific Genetic Exchange Despite Strong Divergence in Deep-Sea Hydrothermal Vent Gastropods of the Genus Alviniconcha
title_sort inter-specific genetic exchange despite strong divergence in deep-sea hydrothermal vent gastropods of the genus alviniconcha
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9223106/
https://www.ncbi.nlm.nih.gov/pubmed/35741747
http://dx.doi.org/10.3390/genes13060985
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