Click
here to close Hello! We notice that
you are using Internet Explorer, which is not supported by Echinobase
and may cause the site to display incorrectly. We suggest using a
current version of Chrome,
FireFox,
or Safari.
PLoS One
2021 Jan 01;1611:e0259595. doi: 10.1371/journal.pone.0259595.
Show Gene links
Show Anatomy links
High levels of connectivity over large distances in the diadematid sea urchin Centrostephanus sylviae.
Veliz D
,
Rojas-Hernández N
,
Fibla P
,
Dewitte B
,
Cornejo-Guzmán S
,
Parada C
.
???displayArticle.abstract???
Most benthic marine invertebrates with sedentary benthic adult phases have planktonic larvae that permit connectivity between geographically isolated populations. Planktonic larval duration and oceanographic processes are vital to connecting populations of species inhabiting remote and distant islands. In the present study, we analyzed the population genetic structure of the sea urchin Centrostephanus sylviae, which inhabits only the Juan Fernández Archipelago and the Desventuradas islands, separated by more than 800 km. For 92 individuals collected from Robinson Crusoe and Selkirk Islands (Juan Fernández Archipelago) and San Ambrosio Island (Desventuradas Islands), 7,067 single nucleotide polymorphisms (SNPs) were obtained. The results did not show a spatial genetic structure for C. sylviae; relative high migration rates were revealed between the islands. An analysis of the water circulation pattern in the area described a predominant northward water flow with periods of inverted flow, suggesting that larvae could move in both directions. Overall, this evidence suggests that C. sylviae comprises a single large population composed of individuals separated by more than 800 km.
???displayArticle.pubmedLink???
34735545
???displayArticle.pmcLink???PMC8568165 ???displayArticle.link???PLoS One
Fig 1. Sampling sites of Centrostephanus sylviae in the Juan Fernández Archipelago and Desventuradas Island.Red points represent the sampling areas on each island: Robinson Crusoe (33°36′S, 78°48′W), Alejandro Selkirk (33°48′S, 80°40′W) and San Ambrosio (26°20′S, 79°53′W). Maps drawn using library maps [22] and mapdata [23] implemented in R software [24].
Fig 2. Principal coordinate analysis (PCoA) performed with sea urchin C. sylviae data obtained from Robinson Island (ROB), San Ambrosio Island (SAM), and Selkirk Island (SK).
Fig 3. Population structure of the sea urchin C. sylviae inferred using the software STRUCTURE for K = 1 to K = 4 of 89 individuals from the three studied islands.A vertical line represents each individual, and each color represents the probability of belonging to one of the genetic clusters. ROB = Robinson Island, SAM = San Ambrosio Island, and SK = Selkirk Island.
Fig 4. Migration network for the sampling sites of C. sylviae on Robinson Island (ROB), Selkirk Island (SK), and Sam Ambrosio Island (SAM).This figure was generated with the divMigrate function implemented in diveRsity (Keenan et al., 2013 [32]). Each vertex represents a sampling site, and each arrow represents the magnitude and direction of the relative migration.
Fig 5. Seasonal (JFM, summer; AMJ, fall; JAS, winter; OND, spring) meridional (positive, northward; negative, southward) velocities averaged over the first 100 m between Juan Fernandez Archipelago and the Desventuradas Islands, 25.5–35°S and 81.5–78°W.Data was obtained with Copernicus model products freely distributed by CMEMS (http://marine.copernicus.eu/).
Fig 6. Seasonal (JFM, summer; AMJ, fall; JAS, winter; OND, spring) longitudinal (positive, westward; negative, eastward) velocities averaged over the first 100 m in the Juan Fernandez Archipelago and the Desventuradas Islands, 25.5–35°S and 81.5–78°W.Data was obtained with Copernicus model products freely distributed by CMEMS (http://marine.copernicus.eu/).
Fig 7. a) Monthly meridional mean velocity (blue line, mean 0–100 m; red line, mean 100–1000 m) time series for the region 25.5–35°S and 81.5–78°W (positive, northward; negative, southward) explaining connectivity between Juan Fernandez Archilepago (JFA) and Desventuradas Islands (DA); b) Monthly longitudinal mean velocity (blue line, mean 0–100 m; red line, mean 100–1000 m) time series (positive, eastward; negative, westward) explaining connectivity between Robinson and Selkirk islands. Data was obtained with Copernicus model products freely distributed by CMEMS (http://marine.copernicus.eu/).
Banks,
Oceanic variability and coastal topography shape genetic structure in a long-dispersing sea urchin.
2007, Pubmed,
Echinobase
Banks,
Oceanic variability and coastal topography shape genetic structure in a long-dispersing sea urchin.
2007,
Pubmed
,
Echinobase
Chang,
Second-generation PLINK: rising to the challenge of larger and richer datasets.
2015,
Pubmed
Cowen,
Larval dispersal and marine population connectivity.
2009,
Pubmed
Duran,
Genetic diversity and population structure of the commercially harvested sea urchin Paracentrotus lividus (Echinodermata, Echinoidea).
2004,
Pubmed
,
Echinobase
Flanagan,
Constraints on the FST-Heterozygosity Outlier Approach.
2017,
Pubmed
Foll,
A genome-scan method to identify selected loci appropriate for both dominant and codominant markers: a Bayesian perspective.
2008,
Pubmed
Friedlander,
Marine Biodiversity in Juan Fernández and Desventuradas Islands, Chile: Global Endemism Hotspots.
2016,
Pubmed
,
Echinobase
Gruber,
dartr: An r package to facilitate analysis of SNP data generated from reduced representation genome sequencing.
2018,
Pubmed
Hellberg,
DEPENDENCE OF GENE FLOW ON GEOGRAPHIC DISTANCE IN TWO SOLITARY CORALS WITH DIFFERENT LARVAL DISPERSAL CAPABILITIES.
1996,
Pubmed
Helyar,
Application of SNPs for population genetics of nonmodel organisms: new opportunities and challenges.
2011,
Pubmed
Kilian,
Diversity arrays technology: a generic genome profiling technology on open platforms.
2012,
Pubmed
Luu,
pcadapt: an R package to perform genome scans for selection based on principal component analysis.
2017,
Pubmed
Porobic,
Biogeography and historical demography of the Juan Fernandez Rock Lobster, Jasus frontalis (Milne Edwards, 1837).
2013,
Pubmed
Pritchard,
Inference of population structure using multilocus genotype data.
2000,
Pubmed
Rojas-Hernandez,
Highly Connected Populations and Temporal Stability in Allelic Frequencies of a Harvested Crab from the Southern Pacific Coast.
2016,
Pubmed
THORSON,
Reproductive and larval ecology of marine bottom invertebrates.
1950,
Pubmed
Treml,
Reproductive output and duration of the pelagic larval stage determine seascape-wide connectivity of marine populations.
2012,
Pubmed
White,
Tracking the response of industrial fishing fleets to large marine protected areas in the Pacific Ocean.
2020,
Pubmed
Xuereb,
Asymmetric oceanographic processes mediate connectivity and population genetic structure, as revealed by RADseq, in a highly dispersive marine invertebrate (Parastichopus californicus).
2018,
Pubmed
,
Echinobase
