A5055790484- Marine Bivalve and Aquaculture Studies
- Aquaculture disease management and microbiota
- Aquaculture Nutrition and Growth
- Calcium Carbonate Crystallization and Inhibition
- Environmental Toxicology and Ecotoxicology
- Mycorrhizal Fungi and Plant Interactions
- Marine Sponges and Natural Products
- Coral and Marine Ecosystems Studies
- Plant Pathogens and Fungal Diseases
- Cephalopods and Marine Biology
- Plant and animal studies
- Genomics and Phylogenetic Studies
- Microbial Community Ecology and Physiology
- Environmental DNA in Biodiversity Studies
- Lichen and fungal ecology
- Chromosomal and Genetic Variations
- Biological Control of Invasive Species
- Marine Biology and Environmental Chemistry
- Lepidoptera: Biology and Taxonomy
- Nuts composition and effects
- Agriculture and Rural Development Research
- Primate Behavior and Ecology
- Amphibian and Reptile Biology
- Viral gastroenteritis research and epidemiology
- Botany and Plant Ecology Studies
University of New Caledonia
2021-2025
L'Institut Agro
2023-2024
IAC (United States)
2023-2024
Institut de Recherche pour le Développement
2022-2024
BP (United Kingdom)
2023
Ifremer
2019-2022
LIttoral ENvironnement et Sociétés
2017-2021
Université de Perpignan
2020-2021
Ecosystèmes Insulaires Océaniens
2018-2021
Interaction Hôtes Agents Pathogènes
2021
Soil health and One Health are global concerns, necessitating the development of refined indicators for effective monitoring. In response, we present Anaconda R Package, a novel tool designed to enhance analysis eDNA data biomonitoring purposes. Employing combination different approaches, this package allows comprehensive investigation species abundance community composition under diverse conditions. This study applied examine impact two types duration fire-fallow cropping systems, using...
Soils harbour an incredible diversity of microorganisms that play crucial roles in ecosystem functioning. However, this biodiversity remains largely overlooked, with a poor understanding how patterns form across landscapes. An eDNA metabarcoding approach was used to identify potential overarching fungal and bacterial communities from ultramafic ecosystems New Caledonia, renowned hotspot. Our comprehensive analysis revealed several key findings, notably important microbial the extreme...
As a major threat to the oyster industry, Pacific Oyster Mortality Syndrome (POMS) is polymicrobial disease affecting main species farmed across world. POMS affects juveniles and became panzootic this last decade, but resistance in some genotypes has emerged. While we know genetic loci associated with resistance, underlying mechanisms remained uncharacterized. So, developed comparative transcriptomic approach using basal gene expression profiles between different biparental families...
The shell color of the Mollusca has attracted naturalists and collectors for hundreds years, while molecular pathways regulating pigment production pigments themselves remain poorly described. In this study, our aim was to identify main their in pearl oyster Pinctada margaritifera—the species displaying broadest range colors. Three inner colors were investigated—red, yellow, green. To maximize phenotypic homogeneity, a controlled population approach combined with common garden conditioning...
Due to their central role in ecosystems functioning and ability rapidly respond environmental changes, soil microorganisms could potentially be used for monitoring recovery the context of degraded land restoration. However, these belowground organisms have been, date, largely neglected. Here, we investigated fungal bacterial community diversity, composition, structure from ultramafic soils New Caledonia, an archipelago southwest Pacific recognized as a priority conservation The emerging...
Juvenile Pacific oysters (Crassostrea gigas) are subjected to recurrent episodes of mass mortalities that constitute a threat for the oyster industry. This mortality syndrome named "Pacific Oyster Mortality Syndrome" (POMS) is polymicrobial disease whose pathogenesis initiated by primary infection variant an Ostreid herpes virus OsHV-1 μVar. The characterization genome during different outbreaks occurring in geographic areas has revealed existence genomic diversity However, biological...
Abstract The capacity of marine sponges to cope with environmental changes is often attributed the specific composition their bacterial communities. In this study, we assessed microbiome two dominant sponges, Rhabdastrella globostellata (Rg) and Hyrtios erectus (He), living in Bouraké lagoon (New Caledonia), where abiotic conditions daily fluctuate according tide. Sponge specimens, sediment seawater samples were collected at 2–3 m depth. communities using 16S rRNA metabarcoding, variations...
Abstract The bivalve Pinctada margaritifera has the capacity to produce most varied and colourful pearls in world. Colour expression inner shell is under combined genetic environmental control correlated with colour of produced when same individual used as a graft donor. One major limitation studying phenotypes grader subjectivity, which leads inconsistent qualification quantification. Through use HSV (Hue Saturation Value) space, we created an R package named ‘ ImaginR ’ characterise...
The occurrence and seasonality of the Critically Endangered great hammerhead shark, Sphyrna mokarran , is data deficient in Central Pacific region. Using photo-identification laser-photogrammetry, we describe seasonal population sharks Tiputa pass (Rangiroa atoll) Tuheiava (Tikehau Tuamotu archipelago French Polynesia. During austral summer 2020 2021, recorded a female-biased aggregation at least 55 individuals (54 females; 1 unknown sex), representing an unprecedented number S. one study....
Today, it is common knowledge that environmental factors can change the color of many animals. Studies have shown molecular mechanisms underlying such modifications could involve epigenetic factors. Since 2013, pearl oyster Pinctada margaritifera var. cumingii has become a biological model for questions on expression and variation in Mollusca. A previous study reported plasticity response to water depth variation, specifically general darkening nacre at greater depth. However, behind this...
For hundreds of years, the color diversity Mollusca shells has been a topic interest for humanity. However, genetic control underlying expression is still poorly understood in mollusks. The pearl oyster Pinctada margaritifera increasingly becoming biological model to study this process due its ability produce large range colors. Previous breeding experiments demonstrated that phenotypes were partly under control, and while few genes found comparative transcriptomics epigenetic experiments,...
The adaptation of marine sponges to their environment is often attributed the specific composition bacterial communities. In this study, we assessed microbiome two dominant sponges, Rhabdastrella globostellata and Hyrtios erectus, living in Bouraké lagoon (New Caledonia), where abiotic conditions reach extreme values temperature, pH, oxygen during low tide. Scuba divers collected sponge specimens sediment seawater samples at 2-3m depth. communities were studied using 16S rRNA metabarcoding,...
Caledargiolestes janiceae Lieftinck, 1975 was erected on the basis of a single not-fully mature male. Eleven years later female captured but never described. Despite further searching, this species only rediscovered in early 2022 with one and two males (immature mature) collected. This paper provides descriptions male different stages maturity.
Abstract Chromatin Immunoprecipitation sequencing (ChIP-seq) is the method of choice to generate chromatin landscapes across genomes. The scarcity literature on ChIPseq and absence a canonical “gold standard” in mollusks especially pacific oyster Magallana gigas , prompted us compare four ChIP-seq methodologies (Native-ChIP, Crosslink-ChIP, ChIPmentation Cut & Tag) find most suitable for this species. Our results show that Tag performs best worst. We hypothesize reason lies particularly...
Enterographa ducouretiana is described as new to science from New Caledonia. It characterized by a foliicolous habit, ascomata immersed in pseudostroma, dark purple hypothecium, and (3–)5-septate ascospores of (16–)20.5(–24) × (2.5–)2.9(–3.5) µm with distinct gelatinous sheath 1.5(–2) μm.
Abstract Background As a major threat to the oyster industry, Pacific Oyster Mortality Syndrome (POMS) is polymicrobial disease affecting main species farmed across world. POMS affects juveniles and became panzootic this last decade, but resistance in some genotypes has emerged. While we know genetic loci associated with resistance, underlying mechanisms remained uncharacterized. So, developed comparative transcriptomic approach using basal gene expression profiles between different...