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Cophylogeny and specificity between cryptic coral species (Pocillopora spp.) at Mo'orea and their symbionts (Symbiodiniaceae)
<p>GENERAL INFORMATION</p> <p>1. Title of Dataset: Cophylogeny and specificity between cryptic coral species (Pocillopora spp.) at Mo'orea and their symbionts (Symbiodiniaceae)</p> <p>2. Author Information<br> A. Principal Investigator Contact Information<br> Name: Scott Burgess<br> Institution: Florida State University<br> Address: 319 Stadium Drive, Tallahassee, FL, USA 32306<br> Email: sburgess@bio.fsu.edu</p> <p><br> 3. Date of data collection (single date, range, approximate date): 2019-08</p> <p>4. Geographic location of data collection: Moorea, French Polynesia</p> <p>5. Information about funding sources that supported the collection of the data: National Science Foundation (NSF; OCE-1829867)</p> <p> </p> <p><br> DATA & FILE OVERVIEW</p> <p>1. File List:<br> Figure 2 Make.R<br> Figure 4 Make.R<br> Figure 5b Make.R<br> Figure 6 Make.R</p> <p>Figure 1 SNAPP species tree.xml<br> Figure 2.txt<br> Figure 2.vcf<br> Figure 3b - Pocillopora mt genomes.nex<br> Figure 4 and 6 data.csv<br> Figure 4 colors.csv<br> Figure 5a - Cladocopium_psbA.nex<br> Figure 5b - Clad clades.csv<br> Figure 5b_Cladocopium.nex<br> Figure 5b_Pocillopora.nex<br> Figure 5b.csv</p> <p><br> 2. Relationship between files:<br> Figure 2 Make.R uses Figure 2.txt and Figure 2.vcf<br> Figure 4 Make.R uses Figure 4 and 6 data.csv and Figure 4 colors.csv<br> Figure 5b Make.R uses Figure 5b - Clad clades.csv, Figure 5b_Cladocopium.nex, Figure 5b_Pocillopora.nex, and Figure 5b.csv<br> Figure 6 Make.R Figure 4 and 6 data.csv</p> <p> </p> <p>3. Metadata</p> <p>Figure 2 Make.R:<br> R code to produce Figure 2, and the accompanying analyses presented in the text, in:<br> Johnston EC, Cunning, Burgess SC. Cophylogeny and specificity between cryptic coral species (Pocillopora spp.) at Mo’orea and their symbionts (Symbiodiniaceae).<br> Uses 'Figure 2.txt', 'Figure 2.vcf'</p> <p><br> Figure 4 Make.R:<br> R code to produce Figure 4, and the accompanying analyses presented in the text, in:<br> Johnston EC, Cunning, Burgess SC. Cophylogeny and specificity between cryptic coral species (Pocillopora spp.) at Mo’orea and their symbionts (Symbiodiniaceae).<br> Uses 'Figure 4 and 4 data.csv', 'Figure 4 colors'</p> <p><br> Figure 5b Make.R:<br> R code to produce Figure 5b, and the accompanying analyses presented in the text, in:<br> Johnston EC, Cunning, Burgess SC. Cophylogeny and specificity between cryptic coral species (Pocillopora spp.) at Mo’orea and their symbionts (Symbiodiniaceae).<br> Uses 'Figure 5b - Clad clades.csv', 'Figure 5b_Cladocopium.nex', 'Figure 5b_Pocillopora.nex', 'Figure 5b.csv'</p> <p><br> Figure 6 Make.R:<br> R code to produce Figure 6, and the accompanying analyses presented in the text, in:<br> Johnston EC, Cunning, Burgess SC. Cophylogeny and specificity between cryptic coral species (Pocillopora spp.) at Mo’orea and their symbionts (Symbiodiniaceae).<br> Uses 'Figure 4 and 6 data.csv'</p> <p><br> Figure 1 SNAPP species tree.xml:<br> Data for species tree used in Figure 1</p> <p>Figure 2.txt:<br> Metadata<br> Sample_ID: Sample ID<br> Hap_Spp: Pocillopora species or haplotype</p> <p>Figure 2.vcf:<br> Linked dataset of 7,887 SNPs</p> <p>Figure 3b - Pocillopora mt genomes.nex:<br> Nexus tree of Pocillopora mitochondrial genomes used in Figure 3b</p> <p><br> Figure 4 and 6 data.csv:<br> Metadata<br> Species.haplotype: Pocillopora species or haplotype<br> Depth.m: Sampling depth in meters<br> Site: Sampling site, label corresponds to the site used in the Moorea Coral Reef Long-Term Ecological Research (MCR-LTER) program.<br> Coral.ID: Coral colony identifier<br> Type_profile: ITS2 type profile generated by SymPortal<br> Type_profile_Prop: Proportion of that given ITS2 type profile in colony sampled<br> Remaining columns: Proportion of ITS2 sequences in colony sampled</p> <p>Figure 4 colors.csv:<br> Metadata<br> my_colors: Custom colors for each ITS2 sequence<br> Symbio.clade: ITS2 sequences</p> <p>Figure 5a - Cladocopium_psbA.nex:<br> Nexus tree of Cladocopium taxa in figure 5a</p> <p>Figure 5b - Clad clades.csv:<br> Metadata<br> UCI_links: Sample ID that contains Pocillopora species or haplotype, sample ID, and ITS2 type profile<br> Clad_clades: Clade assignment from figure 5a</p> <p>Figure 5b_Cladocopium.nex:<br> Nexus tree of Cladocopium taxa in Figure 5b</p> <p>Figure 5b_Pocillopora.nex:<br> Nexus tree of Pocillopora taxa used in PACo analysis, Figure 5b</p> <p>Figure 5b.csv:<br> Matrix of Pocillopora host and Cladocopium symbiont links</p>
MCR LTER: Coral Reef Resilience: Live and Dead Pocillopora and Acropora Coral Colony Time Series from 2006 to 2011
These data describe the abundance, size structure, and morphologies of living and dead corals belonging to the genera Pocillopora and Acropora on the forereef (depth = 10 meters) in 2006, 2009, 2010, and 2011. Data were derived from a randomly chosen subset of photo quadrats associated with knb-lter-mcr.4. For each quadrat, individual coral colonies were identified to genus, scored as living or dead, and the total area of their footprint calculated. In addition, branch morphology was scored on a scale from 1 to 3, with 1 representing very tight spacing, and 3 representing open spacing among adjacent branches. This material is based upon work supported by the U.S. National Science Foundation under Grant No. OCE 16-37396 (and earlier awards) as well as a generous gift from the Gordon and Betty Moore Foundation. Research was completed under permits issued by the French Polynesian Government (Délégation à la Recherche) and the Haut-commissariat de la République en Polynésie Francaise (DTRT) (Protocole d'Accueil 2005-2018). This work represents a contribution of the Moorea Coral Reef (MCR) LTER Site.
Exploring the Pocillopora cryptic diversity: a new genetic lineage in the western Indian Ocean or remnants from an ancient one?
<p>Cryptic species and lineages have been widely reported during the last decades, particularly in the marine realm. Misidentifications and ignoring species complexes imply many consequences, notably biasing biodiversity and connectivity assessments, which in turn mislead our understanding of ecosystems and impact the effective design and management of conservation plans. Focusing on the Indo-Pacific coral genus <em>Pocillopora</em>, playing key roles in reef ecosystems as one of the main bio-constructors, we report the first <em>Pocillopora</em> PSH16 (ORF53; <em>sensu</em> Gélin et al. 2017, Mol Phylogenet Evol 109:430–446) colonies (<em>N</em> = 19) in the western Indian Ocean (Nosy Tanikely, Madagascar), 6,000 km further from its current distribution. Colonies were identified according to their mitochondrial Open Reading Frame (ORF) haplotype and Bayesian assignment tests based on 13-microsatellite genotypes. Additionally, we performed genetic structure and diversity analyses with sympatric colonies from other <em>Pocillopora</em> species and <em>Pocillopora</em> PSH16 colonies from the tropical southwestern Pacific, revealing (1) a weak clonal richness, (2) a weak genetic diversity and (3) a relative isolation for the newly reported PSH16 colonies. These colonies thus represent either a new, distinct and uncommon, genetic lineage, or isolated remnants of a wider one. In any case, unless specific management measures are implemented, their long-term maintenance seems compromised due to restricted gene flow within a restricted pool of genes.</p> <p> </p> <p>This dataset contains the microsatellite genotypes analysed (98 <em>Pocillopora</em> colonies × 13 loci + ORF). Missing data are encoded as "?". The sampling marine province and the population are indicated for each individual.</p>
Suppl. Information to "The tropical coral Pocillopora acuta displays an unusual chromatin structure and shows histone H3 clipping plasticity upon bleaching"
<p><strong>Supplementary File 1:</strong> Multiple alignment for protein sequences of core histones with Pocillopora acuta, Pocillopora damicornis, Acropora digitifera, Nematostella vectensis, Hydra vulgaris, Schistosoma mansoni and Mus musculus. A. Histone H2A; B. Histone H2B; C. Histone H3; D. Histone H4. An asterisk (*) means that the amino acid is conserved between all species.</p> <p><strong>Supplementary File 2</strong>: Original (uncropped and unedited) images used for Figures 1 to 4.</p> <p><strong>Supplementary File 3:</strong> <em>P. acuta</em> nuclei and <em>Symbiodinium</em> count on a Thoma cell counting chamber done over three different nuclei extractions. For each extraction, two counts were performed. P. acuta nuclei were stained with Hoechst 33342 and display a blue fluorescence at 350 nm. Symbiodinium are not damaged by our extraction method and are not permeable to Hoechst. They display a red fluorescence because of their chlorophyl content. Observations were done on a Leica DMLB with objective PL Fluotar 40x and 100x. A text version of the data in the Excel file below.</p> <p>Extraction #1 replicate 1: 102 <em>P. acuta</em> nuclei (Blue) ; 2 <em>Symbiodinium</em> (Red)<br> Extraction #1 replicate 2: 112 <em>P. acuta</em> nuclei (Blue) ; 2 <em>Symbiodinium</em> (Red)</p> <p>Extraction #1 replicate 1: 42 <em>P. acuta </em>nuclei (Blue) ; 0 <em>Symbiodinium</em> (Red)<br> Extraction #1 replicate 2: 55 <em>P. acuta </em>nuclei (Blue) ; 1 <em>Symbiodinium</em> (Red)</p> <p>Extraction #1 replicate 1: 215 <em>P. acuta </em>nuclei (Blue) ; 3 <em>Symbiodinium</em> (Red)<br> Extraction #1 replicate 2: 257 <em>P. acuta</em> nuclei (Blue) ; 5 <em>Symbiodinium</em> (Red)</p> <p>Made at IHPE.</p>
From genomics to integrative species delimitation? The case study of the Indo-Pacific Pocillopora corals
<p>With the advent of genomics, sequencing thousands of loci from hundreds of individuals now appears feasible at reasonable costs, allowing complex phylogenies to be resolved. This is particularly relevant for cnidarians, for which insufficient data is available due to the small number of currently available markers and obscures species boundaries. Difficulties in inferring gene trees and morphological incongruences further blur the study and conservation of these organisms. Yet, can genomics alone be used to delimit species? Here, focusing on the coral genus <em>Pocillopora</em>, whose colonies play key roles in Indo-Pacific reef ecosystems but have challenged taxonomists for decades, we explored and discussed the usefulness of multiple criteria (genetics, morphology, biogeography and symbiosis ecology) to delimit species of this genus. Phylogenetic inferences, clustering approaches and species delimitation methods based on genome-wide single-nucleotide polymorphisms (SNP) were first used to resolve <em>Pocillopora</em> phylogeny and propose genomic species hypotheses from 356 colonies sampled across the Indo-Pacific (western Indian Ocean, tropical southwestern Pacific and south-east Polynesia). These species hypotheses were then compared to other lines of evidence based on genetic, morphology, biogeography and symbiont associations. Out of 21 species hypotheses delimited by genomics, 13 were strongly supported by all approaches, while six could represent either undescribed species or nominal species that have been synonymised incorrectly. Altogether, our results support (1) the obsolescence of macromorphology (i.e., overall colony and branches shape) but the relevance of micromorphology (i.e., corallite structures) to refine <em>Pocillopora</em> species boundaries, (2) the relevance of the mtORF (coupled with other markers in some cases) as a diagnostic marker of most species, (3) the requirement of molecular identification when species identity of colonies is absolutely necessary to interpret results, as morphology can blur species identification in the field, and (4) the need for a taxonomic revision of the genus <em>Pocillopora</em>. These results give new insights into the usefulness of multiple criteria for resolving <em>Pocillopora</em>, and more widely, scleractinian species boundaries, and will ultimately contribute to the taxonomic revision of this genus and the conservation of its species.</p> <p> </p> <p>This deposit contains the data related to Oury N, Noël C, Mona S, Aurelle D, Magalon H (2023) From genomics to integrative species delimitation? The case study of the Indo-Pacific <em>Pocillopora </em>corals. Mol Phylogenet Evol 107803. doi:10.1016/j.ympev.2023.107803</p> <p>See 0_README.txt for more content details.</p>
MCR LTER: Coral Reef: Conspecific aggregation mitigation of OA on calcification of the coral Pocillopora verrucosa, JEXBIO 2017
The study was conducted in April 2015 in Moorea, French Polynesia, using colonies of Pocillopora verrucosa (~ 4 cm in planar diameter) collected from the outer reef of the north shore at 10–12 m depth. Corals were collected from multiple sites separated by 100-200 m on the outer reef to maximize the likelihood that the selected coral colonies were genetically unique, and transferred directly to an acclimation tank. The experiment used a sequential design, in which corals first were incubated under 130 ambient or elevated pCO2 in flow-through tanks, and then were incubated in a recirculating flume under the same pCO2 crossed with a contrast of two colony densities (Fig. S1). Two response variables were measured in the light (calcification and net photosynthesis at a single irradiance), two response variables were measured in the dark (aerobic respiration and calcification), and two response variables were calculated from these values (gross 135 photosynthesis, and calcification integrated over 24 h). Aerobic respiration was measured as oxygen uptake, and net photosynthesis was measured as the flux of oxygen at a constant irradiance, and in both cases, oxygen uptake was given a negative notation and oxygen evolution a positive notation; gross photosynthesis was obtained by subtracting respiration from net photosynthesis. Daily calcification was calculated by integrating calcification in the 140 light over 12 h, calcification in the dark over 12 h, and summing the two values assuming each day consisted of 12 h of light at a constant intensity. The six response variables were measured for aggregates of a fixed number (n = 12) of similar-sized colonies placed in the flume in either high or low density arrays. With this design, it was not possible to measure the physiology of individual colonies in each aggregate, and therefore our results describe the 145 performance corals averaged across each aggregate. These data support the publication Evensen & Edmunds, 'Conspecific
Data and code for: High light alongside elevated pCO2 alleviates thermal depression of photosynthesis in a hard coral (Pocillopora acuta)
<p>Data and R scripts of analyses performed for the manuscript "<strong>High light alongside elevated pCO<sub>2</sub> alleviates thermal depression of photosynthesis in a hard coral (<em>Pocillopora acuta</em>)</strong>"</p>
Figure 2. from: New evidence shows that Pocillopora 'damicornis-like' corals in Singapore are actually Pocillopora acuta (Scleractinia: Pocilloporidae) - Biodiversity Data Journal 5: e11407 (13 February 2017) https://doi.org/10.3897/BDJ.5.e11407
Figure 2. - Pocillopora specimens previously identified as P. damicornis from the Zoological Reference Collection, Lee Kong Chian Natural History Museum, Singapore (A, B: ZRC.1980.20.133; C, D: ZRC.1991.766; E, F: ZRC.1987.1538; G, H: ZRC.1987.1995; I, J: ZRC.1991.763; K, L: ZRC.1987.1537). A–F, colonies with thick branches; G–L, colonies with thinner branches. Scale bars represent 1 cm.
Figure 3. from: New evidence shows that Pocillopora 'damicornis-like' corals in Singapore are actually Pocillopora acuta (Scleractinia: Pocilloporidae) - Biodiversity Data Journal 5: e11407 (13 February 2017) https://doi.org/10.3897/BDJ.5.e11407
Figure 3. - Maximum likelihood tree of seven Pocillopora species based on the mitochondrial open reading frame. Colonies from Singapore are shown in red. Bootstrap values (≥ 50) and Bayesian posterior probabilities (≥ 0.85) are shown for supported clades.
Figure 3. from: New evidence shows that Pocillopora 'damicornis-like' corals in Singapore are actually Pocillopora acuta (Scleractinia: Pocilloporidae) - Biodiversity Data Journal 5: e11407 (13 February 2017) https://doi.org/10.3897/BDJ.5.e11407
Figure 3. - Maximum likelihood tree of seven Pocillopora species based on the mitochondrial open reading frame. Colonies from Singapore are shown in red. Bootstrap values (≥ 50) and Bayesian posterior probabilities (≥ 0.85) are shown for supported clades.
Figure 1. from: New evidence shows that Pocillopora 'damicornis-like' corals in Singapore are actually Pocillopora acuta (Scleractinia: Pocilloporidae) - Biodiversity Data Journal 5: e11407 (13 February 2017) https://doi.org/10.3897/BDJ.5.e11407
Figure 1. - Pocillopora specimens examined in this study. In situ appearances (A: HD159, D: HD162, G: HD161, J: HD160, M: HD154), with corresponding images of bleached skeletons (B, E, H, K, N). C, live specimen showing brown ring surrounding each oral opening (image by Jenny). F, I, branches from colonies shown in D and G respectively. L, O, calices and septa from colonies shown in J and M respectively. Scale bars represent 1 cm (B, E, H, K, N) and 1 mm (F, I, L, O) respectively.
Figure 2. from: New evidence shows that Pocillopora 'damicornis-like' corals in Singapore are actually Pocillopora acuta (Scleractinia: Pocilloporidae) - Biodiversity Data Journal 5: e11407 (13 February 2017) https://doi.org/10.3897/BDJ.5.e11407
Figure 2. - Pocillopora specimens previously identified as P. damicornis from the Zoological Reference Collection, Lee Kong Chian Natural History Museum, Singapore (A, B: ZRC.1980.20.133; C, D: ZRC.1991.766; E, F: ZRC.1987.1538; G, H: ZRC.1987.1995; I, J: ZRC.1991.763; K, L: ZRC.1987.1537). A–F, colonies with thick branches; G–L, colonies with thinner branches. Scale bars represent 1 cm.
Figure 1. from: New evidence shows that Pocillopora 'damicornis-like' corals in Singapore are actually Pocillopora acuta (Scleractinia: Pocilloporidae) - Biodiversity Data Journal 5: e11407 (13 February 2017) https://doi.org/10.3897/BDJ.5.e11407
Figure 1. - Pocillopora specimens examined in this study. In situ appearances (A: HD159, D: HD162, G: HD161, J: HD160, M: HD154), with corresponding images of bleached skeletons (B, E, H, K, N). C, live specimen showing brown ring surrounding each oral opening (image by Jenny). F, I, branches from colonies shown in D and G respectively. L, O, calices and septa from colonies shown in J and M respectively. Scale bars represent 1 cm (B, E, H, K, N) and 1 mm (F, I, L, O) respectively.
From population connectivity to the art of striping Russian dolls: the lessons from Pocillopora corals
<p>Here, we examined the genetic variability in the coral genus <em>Pocillopora</em>, in particular within the Primary Species Hypothesis PSH09, identified by Gélin, Postaire, Fauvelot and Magalon (2017b) using species delimitation methods [also named <em>Pocillopora eydouxi/meandrina</em> complex <em>sensu</em> Schmidt-Roach, Miller, Lundgren, & Andreakis (2014)] and which was found to split into three Secondary Species Hypotheses (SSH09a, SSH09b and SSH09c) according to assignment tests using multi-locus genotypes (13 microsatellites). From a large sampling (2,507 colonies) achieved in three marine provinces [Western Indian Ocean (WIO), Tropical Southwestern Pacific (TSP) and Southeast Polynesia (SEP)], genetic structuring analysis conducted with two clustering analyses (Structure and DAPC) using 13 microsatellites revealed that SSH09a was restricted to the WIO while SSH09b and SSH09c were almost exclusively in the TSP and SEP. More surprisingly, each SSH split into two to three genetically differentiated clusters, found in sympatry at the reef scale, leading to a pattern of nested hierarchical levels (PSH > SSH > cluster), each level hiding highly differentiated genetic groups. Thus, rather than structured populations within a single species, these three SSHs, and even the eight clusters, likely represent distinct genetic lineages engaged in a speciation process or real species. The issue is now to understand which hierarchical level (SSH, cluster or even below) corresponds to the species one. Several hypotheses are discussed on the processes leading to this pattern of mixed clusters in sympatry, evoking formation of reproductive barriers, either by allopatric speciation or habitat selection.</p> <p>This submission contains the genotypes of 2507 individuals from PSH09 for 13 microsatellites.</p>
Data from: Niche breadth and divergence in sympatric cryptic coral species (Pocillopora spp.) across habitats within reefs and among algal symbionts
Open the record for dataset details and reuse information.
MCR LTER: Coral Reef: Pocillopora Abundance, Cover and Recruitment data for Tsounis and Edmunds 2016 Peer J
The dataset contains stony coral cover percent and Pocillopora cover obtained in on the north shore of Moorea in 2010 and 2014/2015 using photoqudrats. A subset of the data were obtained by counting adults and juveniles in situ using quadrats. Recruitment rates were quantified using settlement tiles. These data support the publication Tsounis and Edmunds, The potential for self-seeding by the coral Pocillopora spp. In Moorea, French Polynesia, Peer J, 2016.
Significant changes in bacterial communities associated with Pocillopora ingestion by CoTS: an important factor affecting the coral's health state
Coral ingestion by crown-of-thorns starfish (CoTS) is an important cause of coral reef degradation, although the impacts of CoTS feeding on coral-associated communities are not well understood. Therefore, in this study, we analyzed the zooxanthellae density (ZD), bacterial community composition, and microbial-metagenomic functional capacities associated with Pocillopora corals in healthy portions and feeding scars, following CoTS feeding. The ZDs were significantly lower in the feeding scars, and the ZD-loss rate was 92.05% ± 2.12%. The relative abundances of bacterial communities associated with corals after CoTS feeding changed significantly and were almost completely reorganized at the phylum and genus levels. Analysis of the microbial metagenomic-functional capacities showed that numerous physiological functions of the coral-bacterial holobionts in the feeding scars were diminished, including amino acid metabolism, xenobiotic biodegradation and metabolism, lipid metabolism, membrane transport, signal transduction, and cell motility. Compared with the healthy portions of Pocillopora corals, the abundances of potentially pathogenic bacteria in the corals of feeding scars significantly increased, whereas those of beneficial bacteria significantly decreased. Our research showed that coral-zooxanthellae holobionts were destroyed directly by CoTS, and our findings imply that the large increase in potentially pathogenic bacteria in feeding scars could threaten the long-term health of Pocillopora corals.
Data from: Same places, same stories? Genomics reveals similar structuring and demographic patterns for four Pocillopora coral species in the southwestern Indian Ocean
<p><strong>Aim</strong> Efficiently protecting species requires knowing their ecological, life history and reproductive traits. This is particularly decisive for scleractinian corals, key components of coral reefs, which are experiencing critical declines. Yet their connectivity remains insufficiently documented. Here, we focused on four distinct species of the coral genus <em>Pocillopora</em> found in diverse habitats of the southwestern Indian Ocean and presenting various reproductive strategies. We aimed to understand whether these traits affect species connectivity.</p> <p><strong>Location</strong> Archipelagos and islands of the southwestern Indian Ocean.</p> <p><strong>Taxon</strong> <em>Pocillopora </em>spp.</p> <p><strong>Methods</strong> We used target-capture to collect single-nucleotide polymorphisms (SNPs) from over a thousand colonies sampled across nine localities. From the ca. 1,400 SNPs retained per species, Bayesian clustering methods, networks and demographic inferences were applied to first infer the population genetic structure and connectivity of each species, then the demographic history of each population.</p> <p><strong>Results</strong> All four <em>Pocillopora</em> species exhibited almost the same genetic structuring pattern, reflecting the sampled ecoregions (Madagascar and surrounding islands vs. Mascarene Islands). However, the genetic differentiation was stronger ( <em>F<sub>ST</sub></em> about 10 times higher) for <em>P. acuta</em>, the species inhabiting more enclosed habitats, such as lagoons and shallow waters, and reproducing mainly asexually. Similarly, all populations, except those from <em>P. acuta</em>, showed a signature of population expansion ca. 100,000 years ago, following the penultimate glacial period.</p> <p><strong>Main conclusions</strong> These results indicate reduced gene flow between Madagascar and the Mascarenes, probably linked to currents, suggesting distinct connectivity networks that should be considered independently when setting up conservation plans. In addition, shared demographic histories reflect that populations from these species have probably met the same environmental constraints and reacted similarly, something that should be considered in light of the ongoing rapid climate change.</p>
Supplementary data for: From genomics to integrative taxonomy? The case study of Pocillopora corals
<p><span>With the advent of genomics, sequencing thousands of loci from hundreds of individuals now appears feasible at reasonable costs, allowing complex phylogenies to be resolved. This is particularly relevant for cnidarians, for which insufficient data due to the small number of currently available markers, coupled with difficulties in inferring gene trees and morphological incongruences, encrypts species boundaries, thereby blurring the study and conservation of these organisms. Yet, can genomics alone be used to delimit species in an integrative taxonomic context? Here, focusing on the coral genus <em>Pocillopora</em>, which plays key roles in Indo-Pacific reef ecosystems but has challenged taxonomists for decades, we explored and discussed the usefulness of multiple criteria (genetics, morphology, biogeography and symbiosis ecology) to delimit species of this genus. Phylogenetic inferences, clustering approaches and species delimitation methods based on genome-wide single-nucleotide polymorphisms (SNPs) were first used to resolve <em>Pocillopora</em> phylogeny and propose genomic species hypotheses from 356 colonies sampled across the Indo-Pacific (western Indian Ocean, tropical southwestern Pacific and south-east Polynesia). These species hypotheses were then compared to previous genetic evidences, as well as to evidences based on morphology, biogeography and symbiosis. Genomics allowed to delimit 21 species hypotheses where only seven are currently recognised based on current taxonomy. Moreover, 13 species were strongly supported by all approaches, either confirming their currently recognised species status, or supporting the presence of new species that need to be formally described. Some of the other genomic species hypotheses were supported by biogeographic or symbiosis evidences, but additional investigations are needed to state on their species status. Altogether, our results support (1) the obsolescence of macromorphology (i.e., overall colony and branches shape) but the relevance of micromorphology (i.e., corallite structures) to refine <em>Pocillopora</em> species limits, (2) the need to identify molecularly species prior to their study, as morphology can blur species identification on the field, (3) the relevance of the mtORF (coupled with other markers in some cases) as a diagnostic marker of most species, and (4) the need for a taxonomical revision in the <em>Pocillopora</em> genus. These results give new insights into the usefulness of multiple criteria for resolving <em>Pocillopora</em> species limits and will ultimately provide helpful insights for the conservation of the species from this scleractinian genus.</span></p>
Symbiodiniaceae dynamics in Pocillopora spp. during the 2015 to 2016 El Nino
<p>Cleaned code after reviews</p>
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