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

Taboada, Sergi; Ríos, Pilar; Mitchell, Alex; Cranston, Alex; Busch, Kathrin; Tonzo, Vanina; Cárdenas, Paco; Sánchez, Francisco Arreguín; Leiva, Carlos; Koutsouveli, Vasiliki; Cristobo, Javier; Xavier, Joana R.; Hentschel, Ute; Rapp, Hans‐Tore; Morrow, Christine; Drewery, Jim; Romero, Pedro E.; Arias, María Belén; Whiting, Connie; Riesgo, Ana

doi:10.1016/j.dsr.2021.103685

Cited by 8 publications

(11 citation statements)

References 93 publications

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“…Galaska et al, 2017; Leiva et al, 2019) or a few species from the same group (e.g. Strugnell et al, 2017; Taboada et al, 2022). The use of multiple benthic invertebrate species with differing life‐history traits and reproductive strategies is key to achieve solid community‐level conclusions that can be directly translated into conservation measures, as their genetic connectivity reflects the general gene flow patterns of the region (Jenkins & Stevens, 2018; Marti‐Puig et al, 2013).…”

Section: Discussionmentioning

confidence: 99%

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Guiding marine protected area network design with comparative phylogeography and population genomics: An exemplary case from the Southern Ocean

Leiva

Riesgo

Combosch

et al. 2022

Diversity and Distributions

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Aim Networks of connected marine protected areas (MPAn) are recognized as the key area‐based management tool to preserve biodiversity, moderate exploitation of marine resources and increase ecological resilience to climate change. Although population genetic studies could greatly benefit connectivity assessments between MPAs, genetic data are rarely used in MPAn planning. Here, we aim to illustrate the use of a multispecies and multilocus approach to provide recommendations for MPAn design, highlighting the importance of the species selected and the analyses performed. Our study is focused on the Southern Ocean, an area of keen multinational interest given its scientific significance, economic importance and its unique, shared legal status. Location South Georgia and South Sandwich Islands MPA (SGSSI MPA), the South Orkney Islands and the Western Antarctic Peninsula (WAP)—where an MPA was proposed in 2018 (Domain 1 MPA) but has not been approved by the Commission for the Conservation of the Antarctic Marine Living Resources (CCAMLR). Methods Our datasets include 819 individuals from five different species with contrasting life‐history strategies: two nemerteans (Antarctonemertes valida and A. riesgoae), two annelids (Pterocirrus giribeti and Neanthes kerguelensis) and one sponge (Mycale [Oxymycale] acerata). To identify genetic connectivity patterns in our study area, spanning roughly 2500 km, we used the COI mitochondrial marker and genome‐wide ddRADseq‐derived SNPs. Results A consistent lack of connectivity between SGSSI MPA and the WAP was found for all studied species. Additionally, our data indicated a stepping‐stone role for the South Orkney Islands between these two genetically differentiated regions. Main conclusions Our results reveal how the application of comparative phylogeography and population genomics can guide policymakers in their decision‐making process during MPAn design. We detected priority areas for conservation in Antarctica, including the South Orkney Islands and the WAP, providing strong evidence for the implementation of the Domain 1 MPA.

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Section: Discussionmentioning

confidence: 99%

“…while genome-wide multilocus studies are generally focused on a single species (e.g Galaska et al, 2017;Leiva et al, 2019). or a few species from the same group (e.g Strugnell et al, 2017;Taboada et al, 2022)…”

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confidence: 99%

Guiding marine protected area network design with comparative phylogeography and population genomics: An exemplary case from the Southern Ocean

Leiva

Riesgo

Combosch

et al. 2022

Diversity and Distributions

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“…Recently, there has been an increase in the use of reduced representation genomic methods and Single Nucleotide Polymorphisms (SNPs) for population genomic studies on nonmodel organisms (e.g., Baird et al, 2008 ; Catchen et al, 2017 ; Peterson et al, 2012 ; Puritz et al, 2014 ). The additional power of an increased marker panel has been demonstrated in for example mussels (Becking et al, 2016 ; de Leeuw et al, 2020 ; Maas et al, 2018 ), fish (Bradbury et al, 2015 ; D'Aloia et al, 2020 ; Lemopoulos et al, 2019 ; Sunde et al, 2020 ), and sponges (Taboada et al, 2022 ). However, high‐resolution studies on sponges are lagging behind (Pérez‐Portela & Riesgo, 2020 ), with the notable exception by Brown et al ( 2014 ), Brown et al ( 2017 ), Leiva et al ( 2019 ), and Taboada et al ( 2022 ).…”

Section: Introductionmentioning

confidence: 99%

Sponge diversification in marine lakes: Implications for phylogeography and population genomic studies on sponges

Maas

Prost

Leeuw

et al. 2023

Ecology and Evolution

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The relative influence of geography, currents, and environment on gene flow within sessile marine species remains an open question. Detecting subtle genetic differentiation at small scales is challenging in benthic populations due to large effective population sizes, general lack of resolution in genetic markers, and because barriers to dispersal often remain elusive. Marine lakes can circumvent confounding factors by providing discrete and replicated ecosystems. Using high‐resolution double digest restriction‐site‐associated DNA sequencing (4826 Single Nucleotide Polymorphisms, SNPs), we genotyped populations of the sponge Suberites diversicolor ( n = 125) to test the relative importance of spatial scales (1–1400 km), local environmental conditions, and permeability of seascape barriers in shaping population genomic structure. With the SNP dataset, we show strong intralineage population structure, even at scales <10 km (average F ST = 0.63), which was not detected previously using single markers. Most variation was explained by differentiation between populations (AMOVA: 48.8%) with signatures of population size declines and bottlenecks per lake. Although the populations were strongly structured, we did not detect significant effects of geographic distance, local environments, or degree of connection to the sea on population structure, suggesting mechanisms such as founder events with subsequent priority effects may be at play. We show that the inclusion of morphologically cryptic lineages that can be detected with the COI marker can reduce the obtained SNP set by around 90%. Future work on sponge genomics should confirm that only one lineage is included. Our results call for a reassessment of poorly dispersing benthic organisms that were previously assumed to be highly connected based on low‐resolution markers.

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“…In addition, some previous studies have studied the distribution and abundance of macrobenthos or habitats in the Cantabrian Sea and included part of the study area (Olaso, 1990;Sánchez et al, 2012a, b, 2013, Sánchez et al, 2014aSerrano et al, 2006aSerrano et al, , 2006bSerrano et al, , 2011Serrano et al, , 2012Lourido et al, 2014). Some of the latest works published in the area have assessed the microbial diversity associated with sponge aggregations (Busch et al, 2020), the connectivity and genetic diversity of the species (Taboada et al, 2020(Taboada et al, , 2021, the growth and importance of the structuring species (Ríos et al, 2020;Prado et al, 2021;Rodríguez-Basalo et al, 2021) or the fauna associated with three-dimensional biogenic constructions (Manjón-Cabeza et al, 2021). An effort has been made to study several taxonomic groups, also looking at small cryptic species such as encrusting sponges, bryozoans and crustaceans among others.…”

Section: Introductionmentioning

confidence: 99%

Avilés Canyon System: Increasing the benthic biodiversity knowledge

Ríos

Altuna²,

Frutos

et al. 2022

Estuarine, Coastal and Shelf Science

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

Cited by 8 publications

References 93 publications

Guiding marine protected area network design with comparative phylogeography and population genomics: An exemplary case from the Southern Ocean

Guiding marine protected area network design with comparative phylogeography and population genomics: An exemplary case from the Southern Ocean

Sponge diversification in marine lakes: Implications for phylogeography and population genomic studies on sponges

Avilés Canyon System: Increasing the benthic biodiversity knowledge

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