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| Registros recuperados: 10 | |
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| Adjeroud, Mehdi; Guerecheau, Aurelie; Vidal-dupiol, Jeremie; Flot, Jean-francois; Arnaud-haond, Sophie; Bonhomme, Francois. |
| Clonality and genetic structure of the coral Pocillopora damicornis sensu lato were assessed using five microsatellites in 12 populations from four islands of the Society Archipelago (French Polynesia) sampled in June 2008. The 427 analysed specimens fell into 132 multilocus genotypes (MLGs), suggesting that asexual reproduction plays an important role in the maintenance of these populations. A haploweb analysis of ITS2 sequences of each MLG was consistent with all of them being conspecific. Genetic differentiation was detected both between and within islands, but when a single sample per MLG was included in the analyses, the populations turned out to be nearly panmictic. These observations provide further evidence of the marked variability in reproductive... |
| Tipo: Text |
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| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00171/28209/26518.pdf |
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| Vidal-dupiol, Jeremie; Ladriere, Ophelie; Destoumieux-garzon, Delphine; Sautiere, Pierre-eric; Meistertzheim, Anne-leila; Tambutte, Eric; Tambutte, Sylvie; Duval, David; Foure, Laurent; Adjeroud, Mehdi; Mitta, Guillaume. |
| Scleractinian corals are the most basal eumetazoan taxon and provide the biological and physical framework for coral reefs, which are among the most diverse of all ecosystems. Over the past three decades and coincident with climate change, these phototrophic symbiotic organisms have been subject to increasingly frequent and severe diseases, which are now geographically widespread and a major threat to these ecosystems. Although coral immunity has been the subject of increasing study, the available information remains fragmentary, especially with respect to coral antimicrobial responses. In this study, we characterized damicornin from Pocillopora damicornis, the first scleractinian antimicrobial peptide (AMP) to be reported. We found that its precursor has... |
| Tipo: Text |
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| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00039/14996/12433.pdf |
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| Carlot, Jérémy; Kayal, Mohsen; Lenihan, Hunter S.; Brandl, Simon J.; Casey, Jordan M.; Adjeroud, Mehdi; Cardini, Ulisse; Merciere, Alexandre; Espiau, Benoit; Barneche, Diego R.; Rovere, Alessio; Hédouin, Laetitia; Parravicini, Valeriano. |
| Sea‐level rise is predicted to cause major damage to tropical coastlines. While coral reefs can act as natural barriers for ocean waves, their protection hinges on the ability of scleractinian corals to produce enough calcium carbonate (CaCO3) to keep up with rising sea levels. As a consequence of intensifying disturbances, coral communities are changing rapidly, potentially reducing community‐level CaCO3 production. By combining colony‐level physiology and long‐term monitoring data, we show that reefs recovering from major disturbances can produce 40% more CaCO3 than currently estimated due to the disproportionate contribution of juvenile corals. However, the buffering effect of highly productive juvenile corals is compromised by recruitment failures,... |
| Tipo: Text |
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| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00685/79743/82514.pdf |
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| Clerissi, Camille; Brunet, Sebastien; Vidal-dupiol, Jeremie; Adjeroud, Mehdi; Lepage, Pierre; Guillou, Laure; Escoubas, Jean Michel; Toulza, Eve. |
| Previous observations suggested that microbial communities contribute to coral health and the ecological resilience of coral reefs. However, most studies of coral microbiology focused on prokaryotes and the endosymbiotic algae Symbiodinium. In contrast, knowledge concerning diversity of other protists is still lacking, possibly due to methodological constraints. As most eukaryotic DNA in coral samples was derived from hosts, protist diversity was missed in metagenome analyses. To tackle this issue, we designed blocking primers for Scleractinia sequences amplified with two primer sets that targeted variable loops of the 18S rRNA gene (18SV1V2 and 18SV4). These blocking primers were used on environmental colonies of Pocillopora damicornis sensu lato from two... |
| Tipo: Text |
Palavras-chave: Holobiont; Protists; Symbiosis; Metabarcoding; Blocking primer; Scleractinia; Pocillopora damicornis. |
| Ano: 2018 |
URL: http://archimer.ifremer.fr/doc/00457/56823/58661.pdf |
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| Urbina-barreto, Isabel; Chiroleu, Frédéric; Pinel, Romain; Fréchon, Louis; Mahamadaly, Vincent; Elise, Simon; Kulbicki, Michel; Quod, Jean-pascal; Dutrieux, Eric; Garnier, Rémi; Henrich Bruggemann, J.; Penin, Lucie; Adjeroud, Mehdi. |
| Structural complexity plays a key role in the functioning of coral reef ecosystems. Reef-building corals are major contributors to this complexity, providing shelter and food for numerous invertebrates and fish species. Both structural complexity and shelter capacity of reefscapes are determined by several components such as spurs and grooves, slope, caves and holes, vegetation and coral colonies. Quantifying the shelter capacity from coral colonies to reefscapes is a fundamental step to estimating ecosystem potential to support biodiversity. Here, we applied underwater photogrammetry to quantify shelter volumes provided by individual coral colonies. Overall, 120 3D models of coral colonies from branching, massive, columnar and tabular growth forms were... |
| Tipo: Text |
Palavras-chave: Coral reefs; Reef-building corals; Photogrammetry; 3D models; Predictive models; Shelter capacity; Structural complexity; Coral growth forms. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00659/77065/78372.pdf |
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| Darling, Emily S.; Mcclanahan, Tim R.; Maina, Joseph; Gurney, Georgina G.; Graham, Nicholas A. J.; Januchowski-hartley, Fraser; Cinner, Joshua E.; Mora, Camilo; Hicks, Christina C.; Maire, Eva; Puotinen, Marji; Skirving, William J.; Adjeroud, Mehdi; Ahmadia, Gabby; Arthur, Rohan; Bauman, Andrew G.; Beger, Maria; Berumen, Michael L.; Bigot, Lionel; Bouwmeester, Jessica; Brenier, Ambroise; Bridge, Tom C. L.; Brown, Eric; Campbell, Stuart J.; Cannon, Sara; Cauvin, Bruce; Chen, Chaolun Allen; Claudet, Joachim; Denis, Vianney; Donner, Simon; Estradivari,; Fadli, Nur; Feary, David A.; Fenner, Douglas; Fox, Helen; Franklin, Erik C.; Friedlander, Alan; Gilmour, James; Goiran, Claire; Guest, James; Hobbs, Jean-paul A.; Hoey, Andrew S.; Houk, Peter; Johnson, Steven; Jupiter, Stacy D.; Kayal, Mohsen; Kuo, Chao-yang; Lamb, Joleah; Lee, Michelle A. C.; Low, Jeffrey; Muthiga, Nyawira; Muttaqin, Efin; Nand, Yashika; Nash, Kirsty L.; Nedlic, Osamu; Pandolfi, John M.; Pardede, Shinta; Patankar, Vardhan; Penin, Lucie; Ribas-deulofeu, Lauriane; Richards, Zoe; Roberts, T. Edward; Rodgers, Ku’ulei S.; Safuan, Che Din Mohd; Sala, Enric; Shedrawi, George; Sin, Tsai Min; Smallhorn-west, Patrick; Smith, Jennifer E.; Sommer, Brigitte; Steinberg, Peter D.; Sutthacheep, Makamas; Tan, Chun Hong James; Williams, Gareth J.; Wilson, Shaun; Yeemin, Thamasak; Bruno, John F.; Fortin, Marie-josée; Krkosek, Martin; Mouillot, David. |
| Without drastic efforts to reduce carbon emissions and mitigate globalized stressors, tropical coral reefs are in jeopardy. Strategic conservation and management requires identification of the environmental and socioeconomic factors driving the persistence of scleractinian coral assemblages—the foundation species of coral reef ecosystems. Here, we compiled coral abundance data from 2,584 Indo-Pacific reefs to evaluate the influence of 21 climate, social and environmental drivers on the ecology of reef coral assemblages. Higher abundances of framework-building corals were typically associated with: weaker thermal disturbances and longer intervals for potential recovery; slower human population growth; reduced access by human settlements and markets; and... |
| Tipo: Text |
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| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00512/62324/66605.pdf |
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| Brener-raffalli, Kelly; Clerissi, Camille; Vidal-dupiol, Jeremie; Adjeroud, Mehdi; Bonhomme, Francois; Pratlong, Marine; Aurelle, Didier; Mitta, Guillaume; Toulza, Eve. |
| Background: Although the term holobiont has been popularized in corals with the advent of the hologenome theory of evolution, the underlying concepts are still a matter of debate. Indeed, the relative contribution of host and environment and especially thermal regime in shaping the microbial communities should be examined carefully to evaluate the potential role of symbionts for holobiont adaptation in the context of global changes. We used the sessile, long-lived, symbiotic and environmentally sensitive reef-building coral Pocillopora damicornis to address these issues. Results: We sampled Pocillopora damicornis colonies corresponding to two different mitochondrial lineages in different geographic areas displaying different thermal regimes: Djibouti,... |
| Tipo: Text |
Palavras-chave: Coral holobiont; Microbiota; Bacterial communities; Symbiodinium assemblages; Thermal adaptation; Scleractinian corals; Coral reefs; Pocillopora damicornis. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00429/54076/55380.pdf |
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| Vidal-dupiol, Jeremie; Dheilly, Nolwenn M.; Rondon, Rodolfo; Grunau, Christoph; Cosseau, Celine; Smith, Kristina M.; Freitag, Michael; Adjeroud, Mehdi; Mitta, Guillaume. |
| Global change and its associated temperature increase has directly or indirectly changed the distributions of hosts and pathogens, and has affected host immunity, pathogen virulence and growth rates. This has resulted in increased disease in natural plant and animal populations worldwide, including scleractinian corals. While the effects of temperature increase on immunity and pathogen virulence have been clearly identified, their interaction, synergy and relative weight during pathogenesis remain poorly documented. We investigated these phenomena in the interaction between the coral Pocillopora damicornis and the bacterium Vibrio coralliilyticus, for which the infection process is temperature-dependent. We developed an experimental model that enabled... |
| Tipo: Text |
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| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00221/33265/31738.pdf |
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| Hoarau, Ludovic; Rouzé, Héloïse; Boissin, Émilie; Gravier-bonnet, Nicole; Plantard, Patrick; Loisil, Camille; Bigot, Lionel; Chabanet, Pascale; Labarrère, Priscille; Penin, Lucie; Adjeroud, Mehdi; Mulochau, Thierry. |
| Tipo: Text |
Palavras-chave: Mesophotic coral ecosystem (MCEs); Reunion Island; Lower mesophotic zone; Scleractinian; Hydrocoral; Refugia; Biodiversity; Southwestern Indian Ocean. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00686/79841/82660.pdf |
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| Registros recuperados: 10 | |
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