Gene flow and differentiation in a native calcareous sponge (Porifera) with unknown dispersal phase

Padua, André; Cunha, Haydée A.; Klautau, Michelle

doi:10.1007/s12526-017-0742-z

Cited by 8 publications

(15 citation statements)

References 72 publications

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“…The genetic diversity values found in our study are within the range of other studies on marine sponges using microsatellite markers. Comparisons with data available in these studies (Duran, Pascual, Estoup, & Turon, ; Blanquer, Uriz, & Caujapé‐Castells, ; Blanquer & Uriz, ; Dailianis, Tsigenopoulos, Dounas, & Voultsiadou, ; Guardiola, Frotscher, & Uriz, , ; Bell et al., ; Pérez‐Portela, Noyer, & Becerro, ; Giles, Saenz‐Agudelo, Hussey, Ravasi, & Berumen, ; Chaves‐Fonnegra, Feldheim, Secord, & Lopez, ; Riesgo et al., ; under review; Padua, Cunha, & Klautau, ) revealed that H e increased as the sampling range covered larger distances (Figure ). Our H e values are especially similar to those in studies covering around 1,000 km, a spatial scale similar to ours.…”

Section: Discussionmentioning

confidence: 88%

“…Crambe crambe (Duran et al., ); 11. Clathrina aurea (Padua et al., ); 12. Spongia officinalis (Dailianis et al., ); 13.…”

Section: Discussionunclassified

“…() recently reviewed the incidence of IBD in deep‐ and shallow‐water marine organisms (no sponges were included in their analysis), and they concluded that scales of dispersal and connectivity in deep‐water organisms are comparable to those reported for shallow‐water organisms, which would then justify comparing our results with others for shallow‐water organisms. In this sense, several shallow‐water sponges seem to be substantially affected by oceanographic fronts, ocean depth and water circulation patterns, showing very little incidence of patterns following the stepping‐stone gene flow derived from IBD (Chaves‐Fonnegra et al., ; Dailianis et al., ; Padua et al., ; Riesgo et al., ). Interestingly, no IBD was detected for a hadal amphipod species of the genus Paralicella occurring in the Pacific, with geological events and topographical barriers most likely responsible for the major isolation observed among their populations (Ritchie et al., ).…”

Section: Discussionmentioning

confidence: 99%

“…OMS-1A Padua, Cunha, & Klautau, 2017) revealed that H e increased as the sampling range covered larger distances (Figure 7). Our H e values are especially similar to those in studies covering around 1,000 km, a spatial scale similar to ours.…”

Section: Uk-1bmentioning

confidence: 98%

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Implications of population connectivity studies for the design of marine protected areas in the deep sea: An example of a demosponge from the Clarion‐Clipperton Zone

et al. 2018

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The abyssal demosponge Plenaster craigi inhabits the Clarion‐Clipperton Zone (CCZ) in the northeast Pacific, a region with abundant seafloor polymetallic nodules with potential mining interest. Since P. craigi is a very abundant encrusting sponge on nodules, understanding its genetic diversity and connectivity could provide important insights into extinction risks and design of marine protected areas. Our main aim was to assess the effectiveness of the Area of Particular Environmental Interest 6 (APEI‐6) as a potential genetic reservoir for three adjacent mining exploration contract areas (UK‐1A, UK‐1B and OMS‐1A). As in many other sponges, COI showed extremely low variability even for samples ~900 km apart. Conversely, the 168 individuals of P. craigi, genotyped for 11 microsatellite markers, provided strong genetic structure at large geographical scales not explained by isolation by distance (IBD). Interestingly, we detected molecular affinities between samples from APEI‐6 and UK‐1A, despite being separated ~800 km. Although our migration analysis inferred very little progeny dispersal of individuals between areas, the major differentiation of OMS‐1A from the other areas might be explained by the occurrence of predominantly northeasterly transport predicted by the HYCOM hydrodynamic model. Our study suggests that although APEI‐6 does serve a conservation role, with species connectivity to the exploration areas, it is on its own inadequate as a propagule source for P. craigi for the entire eastern portion of the CCZ. Our new data suggest that an APEI located to the east and/or the south of the UK‐1, OMS‐1, BGR, TOML and NORI areas would be highly valuable.

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Section: Discussionmentioning

confidence: 88%

“…Crambe crambe (Duran et al., ); 11. Clathrina aurea (Padua et al., ); 12. Spongia officinalis (Dailianis et al., ); 13.…”

Section: Discussionunclassified

Section: Discussionmentioning

confidence: 99%

Section: Uk-1bmentioning

confidence: 98%

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Implications of population connectivity studies for the design of marine protected areas in the deep sea: An example of a demosponge from the Clarion‐Clipperton Zone

et al. 2018

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“…We used Genodive v2.032b (Meirmans and Van Tiendener 2004) to calculate observed heterozygosity (H O ) and gene diversity/ expected heterozygosity (H S ; Nei 1987). We also tested for probability of departure from Hardy-Weinberg Equilibrium (HWE) in Genodive using the AMOVA (least squares) method and 50,000 permutations (p values corrected for multiple tests using the Benjamini and Yekutieli method, calculated as previously).…”

Section: Genetic Diversity Inbreeding and Bottlenecksmentioning

confidence: 99%

Using genetics to inform restoration and predict resilience in declining populations of a keystone marine sponge

et al. 2020

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Genetic tools can have a key role in informing conservation management of declining populations. Genetic diversity is an important determinant of population fitness and resilience, and can require careful management to ensure sufficient variation is present. In addition, population genetics data reveal patterns of connectivity and gene flow between locations, enabling mangers to predict recovery and resilience, identify areas of local adaptation, and generate restoration plans. Here, we demonstrate a conservation genetics approach to inform restoration and management of the loggerhead sponge (Spheciospongia vesparium) in the Florida Keys, USA. This species is a dominant, habitat-forming component of marine ecosystems in the Caribbean region, but in Florida has suffered numerous mass mortality events. We developed microsatellite markers and used them to genotype sponges from 14 locations in Florida and a site each in The Bahamas, Belize and Barbuda. We found that genetic diversity levels were similar across all sites, but inbreeding and bottleneck signatures were present in Florida. Populations are highly structured at the regional scale, whilst within Florida connectivity is present in a weak isolation by distance pattern, coupled with chaotic genetic patchiness. Evidence of a weak barrier to gene flow was found in Florida among sites situated on opposite sides of the islands in the Middle Keys. Loggerhead sponge populations in Florida are vulnerable in the face of mass mortalities due to low connectivity with other areas in the region, as well as distance-limited and unpredictable local connectivity patterns. However, our discovery of Florida's high genetic diversity increases hope for resilience to future perturbations. These results provide valuable insight for sponge restoration practice in Florida. Communicated by David Hawksworth.

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Population Genomics of Early-Splitting Lineages of Metazoans

Pérez‐Portela

Riesgo

2018

Population Genomics

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Gene flow and differentiation in a native calcareous sponge (Porifera) with unknown dispersal phase

Cited by 8 publications

References 72 publications

Implications of population connectivity studies for the design of marine protected areas in the deep sea: An example of a demosponge from the Clarion‐Clipperton Zone

Implications of population connectivity studies for the design of marine protected areas in the deep sea: An example of a demosponge from the Clarion‐Clipperton Zone

Using genetics to inform restoration and predict resilience in declining populations of a keystone marine sponge

Population Genomics of Early-Splitting Lineages of Metazoans

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