2022
DOI: 10.22541/au.164873620.02723929/v1
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Connectivity of sponge grounds in the deep sea: genetic diversity, gene flow and oceanographic pathways in the fan-shaped sponge Phakellia ventilabrum in the northeast Atlantic

Abstract: Little is known about dispersal in deep-sea sponges, yet understanding patterns of gene flow and connectivity is essential for their effective management. Given rising pressure from harmful anthropogenic activities, schemes that manage resource extraction whilst conserving species diversity are increasingly necessary. Here, we used ddRADseq derived SNPs to investigate the genetic diversity and connectivity for the deep-sea sponge Phakellia ventilabrum across the northeast Atlantic Ocean (from the Cantabrian Se… Show more

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Cited by 3 publications
(3 citation statements)
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“…However, the estimates of genetic diversity for A. cauliformis were relatively low ( H o = 0.265–0.289), similar to results obtained for other Demospongiae using comparable genetic markers (e.g. SNPs: Taboada et al., 2022, H o = 0.063–0.132 for Phakellia ventilabrum ) or lower (e.g. SNPs: Busch et al., 2021, mean H o = 0.601 for Phakellia hirondellei vs. 0.535 for ‘Topsentia‐and‐Petromica’ clade; microsatellites: Chaves‐Fonnegra et al., 2015, mean H o = 0.591 for Cliona delitrix ), suggesting that A. cauliformis populations in the USVI are largely inbred.…”
Section: Discussionsupporting
confidence: 79%
“…However, the estimates of genetic diversity for A. cauliformis were relatively low ( H o = 0.265–0.289), similar to results obtained for other Demospongiae using comparable genetic markers (e.g. SNPs: Taboada et al., 2022, H o = 0.063–0.132 for Phakellia ventilabrum ) or lower (e.g. SNPs: Busch et al., 2021, mean H o = 0.601 for Phakellia hirondellei vs. 0.535 for ‘Topsentia‐and‐Petromica’ clade; microsatellites: Chaves‐Fonnegra et al., 2015, mean H o = 0.591 for Cliona delitrix ), suggesting that A. cauliformis populations in the USVI are largely inbred.…”
Section: Discussionsupporting
confidence: 79%
“…Furthermore, remote, deep-sea habitats are expensive to reach in the first place, so leveraging of natural samplers in this context represents a major boost for large scale ocean exploration and monitoring. For instance, the specimens in this study had previously been used to understand sponge phylogenetics and connectivity of deep-sea environments [ 32 , 33 ].…”
Section: Discussionmentioning
confidence: 99%
“…Furthermore, remote, deep-sea habitats are expensive to reach in the first place, so leveraging of natural samplers in this context represents a major boost for large scale ocean exploration and monitoring. For instance, the specimens in this study had previously been used to understand sponge phylogenetics and connectivity of deep-sea environments 32,33 . The deep sea and high seas are subject to threats such as overfishing 34 , deep-sea mining 35 , climate change and pollution 36 .…”
Section: Discussionmentioning
confidence: 99%