Camille Détrée

• PhD
• MCU- Scientific Officer at French Agency for Biodiversity

Fast fashion and our daily use of fibrous materials cause a massive release of microfibres (MF) into the oceans. Although MF pollution is commonly linked to plastics, the vast majority of collected MF are made from natural materials (e.g. cellulose). We investigated the effects of 96-h exposure to natural (wool, cotton, organic cotton) and syntheti...

Global warming is threatening marine Antarctic fauna, which has evolved in isolation in a cold environment for millions of years. Facing increasing temperatures, marine Antarctic invertebrates can either tolerate or develop adaptations to these changes. On a short timescale, their survival and resistance to warming will be driven by the efficiency...

Sea urchin's survival may depend on their capacity to recover proper orientation rapidly and effectively after inversion, enabling escape from predator and preventing desiccation. This righting behavior has been used as a repeatable and reliable indicator to assess echinoderms performance across environmental conditions, including thermal sensitivi...

Physiological comparisons are fundamental to quantitative assessments of the capacity of species to persist within their current distribution and to predict their rates of redistribution in response to climate change. Yet, the degree to which physiological traits are conserved through evolutionary history may fundamentally constrain the capacity fo...

Two species of scallop, Austrochlamys natans (“ Ostión del Sur ”) and Zygochlamys patagonica (“ Ostión patagonico ”) are presently exploited in the southern part of the Magallanes Province (MP). The lack of clarity in taxonomic identification and ecological aspects is generating both erroneous extraction statistics and an unperceived harvesting pre...

This data is in the framework of the following entitled paper: "Unveiling the unknown phylogenetic position of the scallop Austrochlamys natans and its implications for marine stewardship in the Magallanes Province"

In order to develop powerful predictions on the impact of climate change on marine organisms, it is critical to understand how abiotic drivers such as temperature can directly and indirectly affect marine organisms. Here, we evaluated and compared the physiological vulnerability of the leading-edge populations of two species of sea urchins Loxechin...

Global biodiversity is both declining and being redistributed in response to multiple drivers characterizing the Anthropocene, including synergies between biological invasions and climate change. The Antarctic marine benthos may constitute the last biogeographic realm where barriers (oceanographic currents, climatic gradients) have not yet been bro...

The interacting effects of climate change pressures and human use of natural resources are increasingly affecting marine biodiversity. Variations in key abiotic factors such as temperature and salinity may therefore negatively influence marine organisms that are already threatened by intensive fisheries. Herein, we tested the hypothesis that future...

Husbandry conditions often expose fish to several stressors, compromising organism's global homeostasis, which has consequences on aquaculture production. In order to depict intestinal homeostatic responses to deleterious conditions and the potential beneficial effects of functional diets in aquaculture fish, the effects of chronic suboptimal densi...

Background Colonization of deep-sea hydrothermal vents by most invertebrates was made efficient through their adaptation to a symbiotic lifestyle with chemosynthetic bacteria, the primary producers in these ecosystems. Anatomical adaptations such as the establishment of specialized cells or organs have been evidenced in numerous deep-sea invertebra...

Fish respond to increasing stocking density as a stressor, adjusting physiological functions to increase energy supply for coping with deleterious effects and adapting. These responses are complex and systemic, and the molecular mechanisms involved remain undetermined. One of the most sensitive organs to environmental and homeostatic disruptions is...

Seashore invertebrates such as mussels are exposed to multiple bouts of pollution related to human activities. Plastic debris originating from land-based activities are a concerning issue as they may be fragmented in smaller pieces (microplastics, < 5 mm diameter) which have an excellent potential for uptake by a large variety of animals. Here, we...

The population of the Chilean endemic marine gastropod Concholepas concholepas locally called "loco" has dramatically decreased in the past 50 years as a result of intense activity of local fisheries and high environmental variability observed along the Chilean coast, including episodes of hypoxia, changes in sea surface temperature, ocean acidific...

The advent of functional genomics has sparked the interest in inferring the function of non-coding regions from the transcriptome in non-model species. However, numerous biological processes remain understudied from this perspective, including intestinal immunity in farmed fish. The aim of this study was to infer long non-coding RNA (lncRNAs) expre...

Small RNA sequencing in the copepod ectoparasite Caligus rogercresseyi was conducted to evidence putative roles of non-coding RNAs during the sea louse ontogeny. Here, differentially expressed miRNAs and mRNAs for each developmental stage were analyzed in parallel with bioinformatic gene target predictions. Based on sequence analysis, C. rogercress...

Plastics are one of the most ubiquitous and conspicuous environmental pollution threats accumulating in natural habitats worldwide. In the ocean, as a result of the actions of sunlight, wind and waves, plastic items are fragmented into microplastics, which are consumed by primary consumers such as filter-feeders, with detrimental consequences to th...

The relationship between the deep-sea mussel Bathymodiolus azoricus and its thiotrophic (SOX) and methanotrophic (MOX) symbionts has been ecologically and functionally well studied. Endosymbiosis is common in deep-sea hydrothermal vent fauna, yet little is known about the molecular mechanisms underlying the regulation of interactions between host a...

Increasing evidence suggests that long non-coding RNAs (lncRNAs) play diverse roles in cellular processes, including in the regulation of embryogenesis and growth. However, little is known about the role of lncRNAs in marine invertebrates inhabiting changing environments. Therefore, the aim of this study was to present the first characterization of...

Saxitoxin (STX), a principal phycotoxin contributing to paralytic shellfish poisoning, is largely produced by marine microalgae of the genus Alexandrium. This toxin affects a wide range of species, inducing massive deaths in fish and other marine species. However, marine bivalves can resist and accumulate paralytic shellfish poisons. Despite numero...

In silico gene transcription analysis of pattern recognition receptors (PRRs) and channels at different times post-saxitoxin injection. Hierarchical clustering of significant receptors and channels transcripts is shown (fold change > 4 and p-value < 0.01) according to obtained TPM values. Clusters were generated according to the similarity of the e...

Gene transcription analysis of selected transcripts. Selected immune and channels transcripts involve in the response to the toxin. The transcripts were assayed through qPCR at different hours post inoculation (4, 8, 16 and 24). White bar correspond to mussels injected with saline solution (PBS) (control), while red bars shows the expression of mus...

Expression of all genes with a fold change > |4|. For each time point appear the Fold Change, the p-value and the False Discovery Rate (FDR). (XLSX)

The aim of this study was first to identify lysozymes paralogs in the deep sea mussel Bathymodiolus azoricus then to measure their relative expression or activity in different tissue or conditions. B. azoricus is a bivalve that lives close to hydrothermal chimney in the Mid-Atlantic Ridge (MAR). They harbour in specialized gill cells two types of e...

Hydrothermal vents are located on the mid-ocean ridges, and are characterized by challenging physico-chemical conditions. Despite these conditions dense hydrothermal communities develop down around hydrothermal fluid emissions. The presence of marine invertebrates relies on their capacity to cope with these challenging factors, and, for those formi...