Guillaume Marchessaux

ORCID: 0000-0001-5557-2274
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About
Contact & Profiles
Research Areas
  • Marine Ecology and Invasive Species
  • Marine Invertebrate Physiology and Ecology
  • Aquatic Ecosystems and Phytoplankton Dynamics
  • Crustacean biology and ecology
  • Coral and Marine Ecosystems Studies
  • Aquatic Invertebrate Ecology and Behavior
  • Marine and environmental studies
  • Coastal wetland ecosystem dynamics
  • Marine Bivalve and Aquaculture Studies
  • Marine Toxins and Detection Methods
  • Parasite Biology and Host Interactions
  • Cephalopods and Marine Biology
  • Yersinia bacterium, plague, ectoparasites research
  • Venomous Animal Envenomation and Studies
  • Fish Ecology and Management Studies
  • Isotope Analysis in Ecology
  • Identification and Quantification in Food
  • Mediterranean and Iberian flora and fauna
  • Aeolian processes and effects
  • Turtle Biology and Conservation
  • Species Distribution and Climate Change
  • Aquatic Ecosystems and Biodiversity
  • Environmental Toxicology and Ecotoxicology
  • Classical Antiquity Studies
  • Joseph Conrad and Literature

University of Palermo
2021-2024

Université de Toulon
2020-2022

Aix-Marseille Université
2016-2022

Institut de Recherche pour le Développement
2020-2022

Centre National de la Recherche Scientifique
2020-2022

Institut Méditerranéen d’Océanologie
2017-2021

Laboratoire Chrono-Environnement
2020-2021

Observatoire Océanologique de Banyuls-sur-Mer
2020

L'Hôpital Nord Franche-Comté
2020

One of the consequences climate change and globalization is recent proliferation invasive blue crab Callinectes sapidus in Mediterranean Sea. In this study, C. thermal tolerance was investigated through experiments based on species metabolic response (measuring respiration rates) to a wide temperature range. Based rates, Thermal Habitat Suitability (THS) maps were performed current futures conditions Performance Curve showed CTmax at 40°C an optimum 24°C. Respiration rate increased between...

10.3389/fmars.2022.1055404 article EN cc-by Frontiers in Marine Science 2022-12-21

The blue crab Callinectes sapidus (Rathbun, 1896) is one of the most invasive species in Mediterranean Sea. Understand how populations are maintained and environment driving areas invaded key to an effective future management. This current study presenting a monthly long-term monitoring crabs’ population structure, body size, sexual maturity, reproduction periods fecundity, their relationships with environmental factors saltmarshes system Italy. During winter, high densities (15 ± 8 ind m -2...

10.1371/journal.pone.0289611 article EN cc-by PLoS ONE 2023-08-07

Over historical time, Berre Lagoon (SE France, NW Mediterranean Sea) had undergone various changes. These became more significant, transforming and even disruptive since the 19th century when channel connecting lagoon to sea was deepened surrounding areas were industrialized urbanized. Pollution anoxic crises major consequences. Concomitantly, many non-indigenous species (NIS) arrived in lagoon. In recent years, climate change freshwater input from a hydro-electric power plant have been main...

10.12681/mms.39056 article EN Mediterranean Marine Science 2025-02-26

The PLASMA project (Pollution aux microplastiques du lagon de Mayotte) is a multidisciplinary that began in 2022. It funded by the Mayotte National Marine Park and aims to gain better understanding of state microplastic pollution what can be considered one most beautiful lagoons world. Indeed, lagoon, known for its exceptional biodiversity, currently facing major threats from human pressure overpopulation, quantity these micropollutants their effects on environment (fauna, marine flora,...

10.5194/oos2025-1452 preprint EN 2025-03-26

Managing plastic pollution is a major public health issue in Mayotte (french territory the Indian ocean), where unauthorized dumps are on increase. The lack of selective sorting and appropriate practices among residents contributes to this problem. A survey carried out 2023 352 people, performed collaboration with secondary schools students, highlighted several aspects. Residents show strong cultural social attachment natural spaces, particularly rivers, which they use for variety...

10.5194/oos2025-1535 preprint EN 2025-03-26

Abstract The freshwater jellyfish Craspedacusta sowerbii is one of the most widespread invasive species, but its global distribution remains uncertain due to ephemeral appearances and general lack information in various aquatic environments. aim this study was map current future distributions (2050 2100) using Species Distribution Models allowing visualize habitat suitability make projections changes under potential climate change scenarios. Except Oceania where range decreased, an expansion...

10.1038/s41598-021-02525-3 article EN cc-by Scientific Reports 2021-11-29

Metabolism drives various biological processes, potentially influencing the ecological success and evolutionary fitness of species. Understanding diverse metabolic rates is fundamental in biology. Mechanisms underlying adaptation to factors like temperature predation pressure remain unclear. Our study explored role shaping scaling an invasive mussel species ( Brachidontes pharaonis ). Specifically, we performed laboratory-based experiments assess effects phenotypic plasticity on by exposing...

10.1098/rsbl.2024.0066 article EN Biology Letters 2024-06-01

The blue crab Callinectes sapidus Rathbun, 1896 is an invasive species in the Mediterranean, with a remarkable ability to adapt various habitats, and thereby having significant impacts on biodiversity artisanal fishing activities. Currently, measure being considered control populations invaded sites. However, it necessary understand temporal structure of (e.g., growth, reproduction, sexual maturity) determine specific periods when measures need be implemented. Considering species' crucial...

10.1016/j.gecco.2024.e03168 article EN cc-by Global Ecology and Conservation 2024-08-28

The freshwater jellyfish Craspedacusta sowerbii is among the most widespread invasive species, observed across a wide temperature range. aim of this study to analyze polyp and medusa stages response different temperatures by using (i) an experimental on colony growth at 19 29 °C, (ii) prediction Thermal Habitat Suitability (THS) based thermal tolerance stage. total number polyps colonies was greater high temperature. At with 1 5 were present, 3 numerically dominating. 80% composed 1-...

10.3390/biology11081100 article EN cc-by Biology 2022-07-23

The latest report from the Intergovernmental Platform on Biodiversity and Ecosystem Services (IPBES) expresses concern over global proliferation of non-native species (NIS) driven by increasing temperatures. In 2023, invasive blue crab Portunus segnis in Mediterranean experienced a significant range expansion due to warmer waters northern western regions. Recognizing thermal tolerance as crucial for conservation, this study, using model, emphasized importance considering metabolic...

10.1016/j.gecco.2024.e03071 article EN cc-by Global Ecology and Conservation 2024-07-02

des établissements d'enseignement et de recherche français ou étrangers, laboratoires publics privés.

10.3391/bir.2017.6.4.06 article FR cc-by BioInvasions Records 2017-01-01

Abstract Since 2000, the invasive ctenophore Mnemiopsis leidyi has been recorded in Mediterranean brackish lagoons. Quantitative data on its feeding behavior (i.e. potential ecological impact) these particular environments are non-existent. In this study, we describe situ predation dynamics of M. Berre Lagoon (south-eastern France) over a 22-month survey. Ctenophores were fixed solution formalin water, allowing study prey items gastric cavities at different time scales. The number ingested...

10.1093/plankt/fbab002 article EN Journal of Plankton Research 2021-01-09

Alongside climate change, the introduction of non-native species (NNS) is widely recognized as one main threats to aquatic biodiversity and human wellbeing. Non-native are generally low priority issues on political agendas many countries, particularly in European countries outside Union (EU). The objectives tasks this study were address policy regulation, education level, practices, socioeconomic perceptions NNS Balkans. A questionnaire-based survey was conducted Albania, Bosnia Herzegovina,...

10.25225/jvb.21047 article EN Journal of Vertebrate Biology 2021-09-08

Abstract The invasive freshwater jellyfish Craspedacusta sowerbii , native from East Asia (Yangzi Jiang River), was introduced in Europe for the first time basins of Royal Botanic Garden London. From beginning 20th century, worldwide reports presence C. have been increasing (USA, Canada, Europe, Australia, Russia). Despite its now distribution, has rarely subject recent studies. Moreover, is difficult to rear laboratory, and individuals generally wild only reared short periods. Many aspects...

10.1111/ivb.12308 article EN Invertebrate Biology 2020-12-01

Abstract The invasive freshwater hydromedusa Craspedacusta sowerbii Lankester, 1880 (phylum Cnidaria, class Hydrozoa, family Olindiidae) is native from East Asia but for more than 20 years, reports of this species have been increasing in Europe, North America, and Australia. Due to the sporadic presence medusa stage difficulties sample polyp stage, there a lack data on physiological parameters C. its potential impact. We present growth ingestion rates measured at 29°C, temperature which...

10.1093/plankt/fbaa047 article EN Journal of Plankton Research 2020-09-12
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