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Genetic diversity, gene flow and hybridization in fan-shaped sponges (Phakellia spp.) in the North-East Atlantic deep sea

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dc.contributor.author Taboada, Sergi
dc.contributor.author Ríos, Pilar
dc.contributor.author Mitchell, Alex
dc.contributor.author Cranston, Alex
dc.contributor.author Busch, Kathrin
dc.contributor.author Tonzo, Vanina
dc.contributor.author Cárdenas, Paco
dc.contributor.author Sánchez, Francisco
dc.contributor.author Leiva, Carlos
dc.contributor.author Koutsouveli, Vasiliki
dc.contributor.author Cristobo, Javier
dc.contributor.author Xavier, Joana R.
dc.contributor.author Hentschel, Ute
dc.contributor.author Rapp, Hans-Tore
dc.contributor.author Morrow, Christine
dc.contributor.author Drewery, Jim
dc.contributor.author Romero, Pedro E.
dc.contributor.author Arias, Maria Belén
dc.contributor.author Whiting, Connie
dc.contributor.author Riesgo, Ana
dc.date.accessioned 2022-02-17T19:23:12Z
dc.date.available 2022-02-17T19:23:12Z
dc.date.issued 2022
dc.identifier.uri https://hdl.handle.net/20.500.12866/11371
dc.description.abstract Deep-sea North Atlantic sponge grounds are crucial components of the marine fauna providing a key role in ecosystem functioning. To properly develop effective conservation and management plans, it is crucial to understand the genetic diversity, molecular connectivity patterns and turnover at the population level of the species involved. Here we present the study of two congeneric sponges, Phakellia robusta and Phakellia hirondellei, using multiple sources of evidence. Our phylogenetic study using a fragment of COI placed these two species as sister. Haplotype network analysis using COI revealed no genetic structure for P. hirondellei in samples from the Cantabrian Sea (<100 km). Contrastingly, P. robusta showed a clear genetic structure separating deep-water samples from the Cantabrian Sea and the Hatton-Rockall Basin, from samples from shallower waters from Kerry Head Reefs, NW of Orkney, and Norway. ddRADseq-derived SNPs for P. robusta also segregated samples by bathymetry rather than by geographical distances, and detected a predominant northwards migration for shallow-water specimens connecting sites separated ca. 2,000 km, probably thanks to prevalent oceanographic currents. Importantly, our analysis using SNPs combining the datasets of the two species revealed the presence of potential hybrids, which was corroborated by morphological (spicule) and microbial (16S amplicon sequencing) analyses. Our data suggest that hybridization between these two species occurred at least two times in the past. We discuss the importance of using next-generation techniques to unveil hybridization and the implications of our results for conservation. en_US
dc.language.iso eng
dc.publisher Elsevier
dc.relation.ispartofseries Deep Sea Research. Part I, Oceanographic Research Papers
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
dc.subject Introgression en_US
dc.subject SNPs en_US
dc.subject COI en_US
dc.subject Microbial community analysis en_US
dc.subject Conservation en_US
dc.subject MPA en_US
dc.title Genetic diversity, gene flow and hybridization in fan-shaped sponges (Phakellia spp.) in the North-East Atlantic deep sea en_US
dc.type info:eu-repo/semantics/article
dc.identifier.doi https://doi.org/10.1016/j.dsr.2021.103685
dc.relation.issn 1879-0119

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