Pierre-Yves Gourves

Pierre-Yves Gourves
University of Bordeaux · College of Science and Technology

Master of Research

About

36
Publications
6,034
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
446
Citations
Additional affiliations
October 2018 - present
ADERA
Position
  • Engineer
August 2011 - October 2018
University of Bordeaux
Position
  • Engineer
Education
September 2010 - June 2011
University of Bordeaux
Field of study
  • Aquatic ecotoxicology
September 2009 - June 2010
University of Bordeaux
Field of study
  • Aquatic ecotoxicology
September 2008 - June 2009
University of Nantes
Field of study
  • Psychology

Publications

Publications (36)
Article
Behavioral parameters are increasingly considered sensitive and early bioindicators of toxicity in aquatic organisms. A video-tracking tool was specifically developed to monitor the swimming behaviour of D-larvae of the Mediterranean mussel, Mytilus galloprovincialis, in controlled laboratory conditions. Both maximum and average swimming speeds and...
Article
Arcachon Bay is a prominent oyster production area on the coast of Western Europe, and is subject to chemical contamination including by trace metals. Recently, the national “mussel-watch” monitoring network – using local bivalves as semi-quantitative bioindicators of coastal chemical contamination – highlighted a significant increase in copper (Cu...
Article
Full-text available
The freshwater pearl mussel (FWPM) Margaritifera margaritifera is a bivalve mollusk critically endangered in Europe. There is a special concern about the conservation of this species, but little is known about its sensitivity to environmental pollution. Here, acute toxicity tests were conducted at 16°C according to a standard guide for conducting t...
Article
Since 2011, the Caribbean Islands have witnessed unprecedented massive stranding of a pelagic brown algal Sargassum spp. inducing damages for coastal ecosystems and economy. By accumulating heavy metals, Sargassum can play a role in contaminant transportation from offshore to the coast. In 2019, three genotypes of Sargassum (S. fluitans III, S. nat...
Article
Full-text available
Over the last decade, increasing proliferations of Atlantic Sargassum populations have led to massive beaching with disastrous environmental consequences. This study is a preliminary assessment of open ocean Sargassum spp. element concentration to assess their potential contribution on coastal ecosystems. Sargassum spp. samples from seven sites, co...
Article
Full-text available
The aim of this study was to analyze the impact of three concentrations of a pesticide mixture on the first development stages of rainbow trout (Oncorhynchus mykiss). The mixture was made up of three commonly used pesticides in viticulture: glyphosate (GLY), chlorpyrifos (CPF) and copper sulfate (Cu). Eyed stage embryos were exposed for 3 weeks to...
Article
Les micropolluants (MP) représentent un enjeu environnemental et sanitaire important.Identifier leurs sources pour ensuite réduire leurs rejets est la stratégie privilégiée au niveau français pourlutter contre cette pollution. C’est aussi la démarche qui a été mise en oeuvre dans le projet Regard(réduction et gestion des micropolluants sur la métro...
Article
Les micropolluants (MP) représentent un enjeu environnemental et sanitaire important. Identifier leurs sources pour ensuite réduire leurs rejets est la stratégie privilégiée au niveau français pour lutter contre cette pollution. C’est aussi la démarche qui a été mise en oeuvre dans le projet Regard (réduction et gestion des micropolluants sur la mé...
Article
Micropollutants (MPs) represent an important environmental and health issue. Identifying their sources and then reducing their discharges is the strategy used in France to fight against water pollution. This is also the approach implemented in the Regard project (Reduction and management of micropollutants in the Bordeaux metropolis). The first pha...
Article
Full-text available
The freshwater pearl mussel (FWPM) Margaritifera margaritifera (L.1758) is critically endangered in Europe and ecotoxicological studies on the species are scares. Here, 96 h acute toxicity tests were conducted at 16 °C with sodium chloride (NaCl), nitrates (NO3−), ortho-phosphates (PO43−), cadmium (Cd), aluminum (Al) and arsenic (As) on 13- to 28-m...
Article
Full-text available
This study describes an image analysis method that has been used to analyze the swimming behavior of native oyster D-larvae (Crassostrea gigas) from the Arcachon Bay (SW, France). In a second time, this study evaluated the impact of copper and S-metolachlor pollutants on D-larvae swimming activity and the possible relationship between developmental...
Article
Full-text available
The European sturgeon, Acipenser sturio, is a highly endangered species that almost disappeared in the last decades. Thanks to yearly restocking of the population, this species is still found in the Gironde estuary (France), where juveniles grow during several years before leaving to the ocean. The aims of this study were to evaluate the pressure e...
Article
Very few studies have characterized the concentrations of pollutants in bioturbating species. These species are considered as ecosystem engineers and characterizing stressors, such as contaminants, that impact them could lead to a better understanding of the functioning of ecosystems. In addition to contaminants, bioturbators are affected by a wide...
Article
This study investigates the combined effects of increased temperatures and copper on the early live stages of the Mediterranean mussel Mytilus galloprovincialis and the blue mussel Mytilus edulis as well as their hybrids. For this purpose, developmental abnormalities was measured after 48 h of exposure as well as a battery of oxidative stress marke...
Article
Full-text available
Résumé L’étude de la contamination par le mercure des femmes enceintes du Haut-Maroni en Guyane française a permis d’évaluer leur niveau de contamination et le risque pour leur santé. Le suivi de la contamination est effectué au niveau des cheveux et ce sur une période d’un an. En parallèle, le corps médical a mis en place des actions de prévention...
Article
Full-text available
The increase in human population and urbanization are resulting in an increase in the volume of wastewater and urban runoff effluents entering natural ecosystems. These effluents may contain multiple pollutants to which the biological response of aquatic organisms is still poorly understood mainly due to mixture toxicity and interactions with other...
Article
Full-text available
The past two million years of eastern African climate variability is currently poorly constrained, despite interest in understanding its assumed role in early human evolution. Rare palaeoclimate records from northeastern Africa suggest progressively drier conditions or a stable hydroclimate. By contrast, records from Lake Malawi in tropical southea...
Article
Marine sediments are an important source of contaminants since they are susceptible to be remobilized to the water column. By modifying the physical and biogeochemical characteristics of sediments, bioturbation can influence contaminants remobilization. Within bioturbators, mud shrimp are considered as among the most influential organisms in marine...
Article
Full-text available
This work addressed the trophic transfer and effects of functionalized gold nanoparticles (AuNPs) from periphytic biofilms to the crustacean Gammarus fossarum. Biofilms were exposed for 48 h to 10 nm positively charged functionalized AuNPs at two concentrations, 4.6 and 46 mg/L, and crustaceans G. fossarum grazed on these for 7 days, with daily bio...
Article
The present study aims to elucidate the stress response of early life stages of Mytilus galloprovincialis to the combine effects of selected metals and elevated temperature. For this purpose, we investigated the response of a large panel of oxidative stress markers such as catalase (CAT), superoxide dismutase (SOD), glutathione-S-transferase (GST)...
Article
Full-text available
This study evaluated the vulnerability of early life stages of native oysters (Crassostrea gigas) from the Arcachon Bay (SW, France) to pollutants at risk in the lagoon in particular copper and S-metolachlor. Developmental abnormalities in wild and cultivated oyster D-larvae were investigated during 2 breeding-seasons (2013 and 2014) at different s...
Article
This study evaluates the combined effects of two contaminants (copper and a herbicide S-metolachlor) and temperature on the early life stages of the Pacific oyster Crasssotrea gigas, which is native to Arcachon Bay (southwest France). The responses of D-larvae, obtained from wild and cultivated oysters, were investigated for one year during the oys...
Article
The present work aimed to assess the effects of two widespread metallic pollutants, copper and silver, along with environmentally-realistic temperature increases, on embryo-larval development of the Mediterranean mussel Mytilus galloprovincialis. First, mussel embryos upon fertilization were exposed for 48 h to increasing concentrations of Cu (0.5–...
Poster
The mid-Pleistocene Transition (MPT), between 1.2 and 0.8 Ma B.P., is defined by a change in the amplitude and in the periodicity of glacial/interglacial climatic shifts. A 41 ka obliquity controls the cycles before the MPT, and a 100 ka variability is dominant for the most recent time period (Clark et al., 2006). This work presents a new 1.25 Ma m...
Article
The Gironde Estuary is known for its historic poly-metallic contamination, leading to levels of Cd in oysters Crassostrea gigas above the human consumption limit. However, since 25years, Cd concentrations progressively decreased in the estuary and the question is raised if the same evolution occurred in the North Médoc salt marshes. In this aim, we...
Article
Full-text available
The spatial and seasonal alteration in a battery of biomarkers responses (enzymatic activity of glutathione-S-transferase, catalase and acetylcholinesterase and lipid peroxidation) were investigated to assess the metal derived effects in clam (Ruditapes decussatus) gills, collected from Tunis lagoon (Tunisia). Trace metals (Ag, As, Cd, Cu, Hg, Mn,...
Article
Full-text available
This study was designed to investigate the molecular (transcriptional expression), biochemical (oxidative stress and neurotoxicity), and histopathological effects of metal contamination in the gill of clams (Ruditapes decussatus) sampled from the Tunis lagoon. The concentrations of five heavy metals (Cd, Pb, Hg, Cu, and Zn) in surface sediments and...

Network

Cited By

Projects

Projects (2)
Project
The importance of the interactions between gut microbial communities (microbiome or microbiota) and host health is increasingly recognized, particularly in mamalians. However, the potential effects of environmental parameters on the structure and function of this microbiome are poorly known in aquatic organisms. The MicMAq project will propose a multidisciplinary approach combining ecology, ecotoxicology and molecular biology to study the response of the microbiome associated within the gut of the critically endangered European eel Anguillaanguillato environmental stressors. The first objective of the project is to study wild eels from four contrasted sites in the Gironde Estuary in term of physicochemistry and micropollution. Analytical chemistry technics will be used to characterize the contamination level in fish tissues while the most recent high throughput DNA sequencing technology will be used to determine the composition and the metabolic functions of the microbiome and its alterations. Second, MicMaq will evaluate the impact of eels restocking program on their microbiome structure as well as the potential role of the functional gene repertoire provided by the bacterial partners in the adaptation of eels to new environments. This project will ultimately allow the identification of key drivers of microbiome composition amongst a large range of variables including water physicochemistry, presence of trace metals and organic pollutants, life history and diet quality. The data that will be obtained during the MicMAq project will certainly shed light onto an overlooked aspect of pollution and disease aetiology, contributing to a better comprehension of fish biology in response to restocking and to water pollution.
Project
This interdisciplinary project aims to study the behaviour, the interactive capacity, the internalization, the toxic impact and the trophic transfer of functionalized metallic nanoparticles (NPs), considered as models of NPs potentially encountered in natural ecosystems, in aquatic organisms. Different strategies at different levels of organization (molecular, cellular, organism and trophic chain) are proposed to study the biological impact of gold (Au) and silver (Ag) NPs in various freshwater organisms (periphytic diatoms, bivalve molluscs and fish).