A5066301457- Coral and Marine Ecosystems Studies
- French Urban and Social Studies
- Marine Toxins and Detection Methods
- Marine and coastal plant biology
- Marine and fisheries research
- Coastal and Marine Management
- Fish biology, ecology, and behavior
- Marine Biology and Ecology Research
- Global Maritime and Colonial Histories
- Healthcare Systems and Practices
- Marine and coastal ecosystems
- Aquatic Ecosystems and Biodiversity
- African history and culture studies
- Protist diversity and phylogeny
- Echinoderm biology and ecology
- Aquaculture disease management and microbiota
- Marine Bivalve and Aquaculture Studies
- Health, Medicine and Society
- Agriculture and Rural Development Research
- Island Studies and Pacific Affairs
- Vibrio bacteria research studies
- Marine animal studies overview
- Psychoanalysis and Psychopathology Research
- Fish Biology and Ecology Studies
- Linguistics and Discourse Analysis
Staatliches Museum für Naturkunde Stuttgart
2024
Fédération Nationale des Centres d'Initiatives pour Valoriser l’Agriculture et le Milieu Rural
2001-2021
Benthic dinoflagellates of the genus Ostreopsis Schmidt are common in tropical and subtropical water, some species produce toxins potentially involved human intoxication events. A benthic bloom mascarenensis Quod was observed near Rodrigues Island during a survey southwestern Indian Ocean. The morphology O. studied by LM SEM. Preliminary screening crude extract an O . revealed neurotoxicity mice similar to that induced palytoxin. After partition extract, highest toxicity retained...
The scleractinian coral Porites lutea, an important reef-building on western Indian Ocean reefs (WIO), is affected by a newly-reported white syndrome (WS) the patch (PWPS). Histopathology and culture-independent molecular techniques were used to characterise microbial communities associated with this emerging disease. Microscopy showed extensive tissue fragmentation generally ovoid basophilic bodies resembling bacterial aggregates. Results of 16S rRNA sequence analysis revealed high...
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 fish species. Both structural capacity reefscapes determined by several components such as spurs grooves, slope, caves holes, vegetation colonies. Quantifying from colonies is fundamental step estimating ecosystem potential support biodiversity. Here, we applied underwater photogrammetry...
The choice of ecological monitoring methods and descriptors determines the effectiveness a program designed to assess state coral reef ecosystems. Here, we comparer relative performance traditional Line Intercept Transect (LIT) method with three derived from underwater photogrammetry: LIT on orthomosaics, photoquadrats surface analyses orthomosaics. data were acquired at Reunion Island five outer slopes two communities lava-flows. Coral cover was estimated in situ using LITs digitized...
ABSTRACT Mass mortality of Diadematidae urchins, caused by the Diadema antillarum scuticociliatosis Philaster clade (DScPc) , affected Caribbean in spring 2022 and subsequently spread to eastern Mediterranean, Red Sea, western Indian Ocean. A key question around (DSc), disease scuticociliate, is whether urchin microbiome varies between scuticociliatosis-affected grossly normal urchins. Tissue samples from both abnormal were collected field during initial assessment DSc causative agent an...
Abstract Porites white patch syndrome ( PWPS ) is a coral disease recently described in the Western Indian Ocean. This study aimed to isolate and identify potential pathogens associated with utilizing both culture nonculture screening techniques inoculation trials. A total of 14 bacterial strains (those dominant lesions, absent or rare healthy tissues considered previous study) were cultured used experimentally inoculate otherwise individuals an attempt fulfil Henle–Koch's postulates....
A new benthic dinoflagellate, Coolia areolata Ten-Hage, Turquet, Quod & Couté sp. nov., was isolated from sandy substrata in La Possession Bay, Réunion, and at various other sites the western Indian Ocean. This species is described illustrated by light scanning electron micrographs drawings. The plate formula of C. P03′7″ 6c 6?s 5′″ 2″″. Cell size ranges are 30–36.5 μm long 28–36.5 wide. Cells spherical, areolate, covered with scattered round pores. surface apical 1′ smooth. pore 9–10 long....
Abstract Understanding colonization of new habitats and ecological successions is key to ecosystem conservation. However, studies on primary are scarce for reef-building corals, due the rarity newly formed substratum long-term monitoring efforts required their long life cycle slow growth rate. We analysed data describing diversity, structure demography coral assemblages lava flows different ages reefs at Reunion Island, evaluate strength mechanisms succession, its agreement theoretical...
This survey of the marine ichthyofauna Piton de La Fournaise volcano at Reunion Island is first explanatory study fish community structures in this area. It describes and analyses main qualitative descriptors communities (i.e. species richness, diet, life history geographical distribution) their spatio-temporal organization. investigation 2011 examined lava flows different ages, including most recent that entered ocean between 1977 2007. In all, 263 belonging to 45 families were observed....
The cytotoxicity of maitotoxin (MTX) and okadaic acid (OA) was studied on three mammalian fibroblast cell lines. Neutral red uptake (NRU), which measures viability, morphological alterations were selected as rapid suitable responses. NRU allowed a precise toxicity quantification while the observations damage revealed differences specific to MTX (cell blebbing) OA rounding). BHK21 C13 fibroblasts, although less sensitive than other lines, chosen since they gave stable information two-stage...
Recent surveys conducted on Reunion Island coral reefs revealed an atypical manifestation of black band disease the main framework building coral, Porites lutea. This BBD (PorBBD) presented a thick lighter-colored band, which preceded typical lesion. Whilst aetiology has been intensively described worldwide, it remains unclear if corals with apparently similar lesions across are affected by same pathogens. Therefore, multidisciplinary approach involving field surveys, gross lesion...
Ostreopsis mascarenensis is a toxic dinoflagellate described from the Indian Ocean based only on morphology, without molecular data. Morphological features of have poor taxonomic value, and addition genetic data would ensure correct species identification. The present study reinvestigated field samples Réunion Island western to validate morphological O. type locality. A detailed used light, epifluorescence scanning electron microscopy, phylogeny was inferred sequences LSU rDNA (D1–D3 D8–D10...
AbstractA new toxic benthic marine dinoflagellate, Prorocentrum borbonicum Ten-Hage, Turquet, Quod, Puiseux-Dao & Couté sp. nov., isolated from the fringing coral reef of St Leu La Réunion Island (France, southwest Indian Ocean) is described light and scanning micrographs. The species was identified based on shape, size, surface micromorphology, ornamentation thecal plates, architecture periflagellar area intercalary band. a small (18–24 μm long 16–20 wide) with broadly ovate shape. Thecal...
A new benthic marine dinoflagellate, Sinophysis canaliculata Quod, Ten-Hage, Turquet, Mascarell et Couté sp. nov., was isolated from coral and sediment samples sites in the western Indian Ocean. This species is described illustrated by drawings light scanning electron micrographs. Members of Nie Wang are generally laterally flattened with circular outlines. The differ others genus following characters: cell shape size features thecal plates (plate shapes, number valve pores, presence a...
Coral reefs of Réunion Island in 2007 : status report and monitoring network.— is 2500 km2 belongs to the outermost regions European Union (EU). The population attained 774 600 inhabitants 2004 with 25 % living western part island, 80 littoral zone (called «bas»). gross domestic product (GDP) per capita less than 50 mean index EU. rate unemployment was 33 2004. reef ecosystems extend over 12 along km west south coasts island. In addition natural infl uence climatic events (global change)...