Institut de Recherche pour le Développement

Questioning the Evidence for Host-Symbiont Codiversification in Mycorrhizal Symbioses

Abstract The vast majority of plants form mycorrhizal symbioses. The ecological importance of these mutualistic interactions has sparked interest in their long evolutionary history. By examining interaction networks and phylogenetic trees, several studies have suggested that plan...

Will work for sardines: 20 years of animal-borne ocean observing by Australia’s Integrated Marine Observing System (IMOS) Animal Tagging Facility

The world’s ocean stores ~90% of the excess heat generated by anthropogenic global warming, making sustained ocean observations essential for understanding physical, biological and climate processes. Here, we describe how the Integrated Marine Observing System (IMOS) Animal Taggi...

Iron Isotopes Reveal Fe Export Driven by Change of Tropical Weathering Regime

Abstract Unraveling paleoenvironmental signals recorded in laterites is crucial for quantifying weathering‐driven elemental fluxes at the Earth's surface. New stable iron isotope data (δ 56 Fe), combined with (U‐Th)/He ages in Fe‐oxides from a ferruginous duricrust from French Gu...

Genetic variability and population structure within the Anopheles tessellatus complex (Theobald, 1901) in Indonesia using ITS2 nuclear and COI, COII mitochondrial sequences

Abstract Some Anopheles species that act as malaria vectors are members of species complexes, a concept whereby sibling species cannot be differentiated solely on the basis of morphological characters. Therefore, species complexes represent a major problem in malaria vector contr...

Genetic distance and pollinator sharing shape divergence in floral volatiles in closely related dioecious Ficus species

Abstract Premise Floral scent is central to host recognition in the fig–fig wasp mutualism, yet how scent divergence relates to pollinator sharing among closely related dioecious Ficus species remains unclear. Methods We analyzed volatile organic compounds (VOCs) from four pairs...

Thermohaline gradients and frontal regimes in the northwestern Tropical Atlantic

Abstract. At the edge of the Amazon River plume, stirring by the North Brazil Current (NBC) and its eddies creates sharp surface thermohaline gradients on scales of O(1–100) km. This study provides a comprehensive picture of these gradients and fronts associated with the region's...

Termites play a crucial role in forming major tropical soils: insights from a deep Ferralsol

Abstract Soil bioturbation is increasingly recognized as a key driver of pedogenesis in tropical ecosystems, influencing above- and below-ground biodiversity, nutrient cycling, and aggregate stability across different spatial and temporal scales. This ecological process may play...

Vegetative Barrier Acts as a ‘Trapper’ Rather than a ‘Filter’ for Potentially Toxic Element Contaminated Wind-Erodible Particles at the Vicinity of an Industrial Brownfield: Evaluation of a Nature-Based Solution

Brownfields can represent sources of multiple contaminants and may present health risks through airborne particle dispersion and incidental soil ingestion for surrounding populations. Remediation with nature-based solutions to mitigate legacy industrial pollution is therefore a r...

Total Ozone Reactivity Measurements Reveal Knowledge Gap in Volatile Organic Compound Emissions and Their Reactions

Abstract Total ozone (O 3 ) reactivity monitors (TORMs) were used to investigate biogenic volatile organic compound (BVOC) emissions from several ecosystems. Measurements were conducted in temperate deciduous North American forests, during the CABINEX and SOAS campaigns, on tundr...

Planktonic foraminifera iodine ∕ calcium ratio: is it a proxy for dissolved oxygen in the ocean?

Abstract. Direct observations indicate a declining trend in ocean oxygen concentrations, which is not quantitatively captured by models. The complexity of oxygenation variability, linked to both physical and biochemical parameters, must be investigated across different modern cli...

Multi-omics effect of contaminants exposure during embryogenesis on metamorphosis of blue mussel Mytilus edulis submitted to maritime traffic noise

Anthropogenic underwater noise is now considered one of the ‘emerging threats and ongoing challenges to biodiversity conservation’. Physiological changes have been observed in sessile invertebrates such as bivalves. Bivalve mollusks are of particular interest because of their sen...

Simultaneous versus Sequential Cessation of Tobacco and Cannabis: Preferences of Young Adults Who Co‐Use in France

ABSTRACT Introduction Co‐use of tobacco and cannabis is common among young adults and is associated with higher dependence and quitting difficulties. Little is known about the preference for simultaneous or sequential dual cessation in this population. We aimed to explore prefere...

Adherence and Healthcare Costs Associated with Single-vs Free-Pill Combination of Perindopril-Based Antihypertensive Medications: An 11-Year Follow-Up, Real-World Evidence

BACKGROUND: Short-term studies have demonstrated that single-pill combinations (SPCs) improve adherence, reduce hypertension-related complications, and lower costs; however, long-term benefits remain unclear. This study compared adherence, healthcare resource utilization (HCRU),...

Drainage divide dynamics modulated by erosion-driven landscape adjustment in a low-deformation setting

The Vosges Mountains (northeast France) are a mid-altitude mountain range with peaks reaching ∼1500 m a.s.l., in a low-deformation setting. Despite this, they maintain significant topographic relief (up to ∼1000 m), characterized by deeply incised valleys and broad, rounded uplan...

Empirical evidence for a trade-off between reproduction and tumour dynamics in the freshwater cnidarian Hydra oligactis

Abstract Reproduction is a key life-history trait but often comes at the expense of somatic maintenance, including ageing and susceptibility to disease. While reproduction–immunity trade-offs have been experimentally demonstrated in the context of infectious diseases, whether rep...

SARS-COv-2, influenza and other respiratory virus co-circulation during an outbreak in a rural health zone in Democratic Republic of Congo, 2024–2025

Little is known about the global impact of co-circulation and co-infection of COVID-19 and influenza in Democratic Republic of the Congo (DRC). This study aims at analyzing data on SARS-CoV-2, influenza and other respiratory viruses collected during an outbreak response in the ru...

Dietary behaviour of Sepedon (Parasepedon) ruficeps and Sepedon (Sepedomyia) nasuta (Diptera: Sciomyzidae) and the distribution of their snail prey in Benin (West Africa)

Sciomyzidae (Diptera) larvae live as predators and/or parasitoids of snails. They have potential economic importance as biological control agents against gastropods that are vectors of parasitic diseases. In the present study, the use of Sepedon larvae in schistosomiasis control...

Nonfermenting Gram-Negative Bacilli Other Than Pseudomonas and Acinetobacter Species in Pediatric Blood Cultures: A Multicenter European Analysis

BACKGROUND: Nonfermenting Gram-negative bacilli other than Pseudomonas and Acinetobacter species are increasingly recognized as opportunistic pathogens in pediatric populations, yet their epidemiology and antimicrobial resistance remain poorly defined. METHODS: We conducted a mul...

Agronomic and socio-economic assessments of the roles of earthworms and termite mounds in paddy fields

Bioturbation, the physical disturbance and mixing of soil layers caused by the activity of living organisms, such as earthworms and termites, plays a critical role in shaping soil structure, enhancing nutrient cycling, and regulating ecosystem dynamics. In paddy fields, earthworm...

Imperfect detection and sampling effort shape ground beetle (Carabidae) diversity indicators in large-scale monitoring

Soil biodiversity indicators are increasingly used to inform environmental assessment and policy, yet their robustness is often constrained by heterogeneous sampling designs and imperfect species detection. Surface-active arthropods, such as ground beetles (Carabidae), are widely...