A5000665841- Amphibian and Reptile Biology
- Evolution and Paleontology Studies
- Bat Biology and Ecology Studies
- Species Distribution and Climate Change
- Ichthyology and Marine Biology
- Physiological and biochemical adaptations
- Olfactory and Sensory Function Studies
- Wildlife Ecology and Conservation
- Marine animal studies overview
- Animal Behavior and Reproduction
- Neurobiology and Insect Physiology Research
- Genomics and Phylogenetic Studies
- Morphological variations and asymmetry
- Botany, Ecology, and Taxonomy Studies
- Biochemical Analysis and Sensing Techniques
- Plant and animal studies
- Head and Neck Cancer Studies
- Education, sociology, and vocational training
- Spider Taxonomy and Behavior Studies
- Botany and Plant Ecology Studies
- Trauma Management and Diagnosis
- Microfluidic and Capillary Electrophoresis Applications
- Lepidoptera: Biology and Taxonomy
- Ecology and Vegetation Dynamics Studies
- Paleontology and Evolutionary Biology
Institut des Sciences de l'Evolution de Montpellier
2018-2024
Centre National de la Recherche Scientifique
2013-2024
Staatliches Museum für Naturkunde Stuttgart
2022-2024
Université de Montpellier
2020-2024
Institut de Recherche pour le Développement
2020-2024
Centre Hospitalier Universitaire de Clermont-Ferrand
2023
École Pratique des Hautes Études
2023
Museo de Historia Natural
2022
University of French Guiana
2015-2020
Université Clermont Auvergne
2019
Abstract Aim Mapping Amazonian biodiversity accurately is a major challenge for integrated conservation strategies and to study its origins. However, species boundaries their respective distribution are notoriously inaccurate in this region. Here, we generated georeferenced database of short mtDNA sequences from frogs, revised the richness delimitation bioregions Eastern Guiana Shield estimated endemism within these bioregions. Location Amazonia, with focus on Shield. Taxon studied Amphibia:...
Abstract The number of functional genes coding for olfactory receptors differs markedly between species and has repeatedly been suggested to be predictive a species’ capabilities. To test this assumption, we compiled database all published detection threshold values in mammals used three sets data on discrimination performance that employed the same structurally related monomolecular odour pairs with different mammal species. We extracted receptor 20 which found sensitivity and/or from...
Abstract Turbinal bones are key components of the mammalian rostrum that contribute to three critical functions: (1) homeothermy, (2) water conservation and (3) olfaction. With over 700 extant species, murine rodents (Murinae) most species-rich subfamily, with diversity residing in Indo-Australian Archipelago. Their evolutionary history includes several cases putative, but untested ecomorphological convergence, especially traits related diet. Among spectacular rodent ecomorphs vermivores...
Olfaction and thermoregulation are key functions for mammals. The former is critical to feeding, mating, predator avoidance behaviors, while the latter essential homeothermy. Aquatic amphibious mammals face olfactory thermoregulatory challenges not generally encountered by terrestrial species. In mammals, nasal cavity houses a bony system supporting soft tissues sensory organs implicated in either or functions. It hypothesized that cope with aquatic environments, have expanded their capacity...
Linking genes to phenotypes has been a major question in evolutionary biology for the last decades. In genomic era, few studies attempted link olfactory-related different anatomical proxies. However, they found very inconsistent results. This study is first investigate potential relation between olfactory turbinals and receptor (OR) genes. We demonstrated that despite use of similar methodology acquisition data, OR do not correlate with relative absolute surface area turbinals. These results...
The sky islands of Southwest China, characterized by dramatic topographical and climatic variations, are prominent hotspots biodiversity endemism. Organisms inhabiting middle-to-high elevation habitats in this region geographically isolated within distinct mountain chains, which over geological time have been subjected to isolation-by-distance isolation-by-environment. These processes led profound allopatric diversification strong phylogeographic structuring, resulting a plethora genetically...
We used molecular and morphological data to investigate the hidden diversity within Hypsiboas semilineatus species group, more specifically H. geographicus, an allegedly widespread in northern South America. As a result, identity of geographicus was clarified, several candidate were detected one them, from eastern Guiana Shield, is described herein as preliminary step resolve taxonomy group. diabolicus sp. nov. mainly distinguished closely-related by acuminate snout lateral view,...
Abstract The early diversification of tetrapods into terrestrial environments involved adaptations their locomotor apparatus that allowed for weight support and propulsion on heterogeneous surfaces. Many lineages subsequently returned to the water, while others conquered aerial environment, further diversifying under physical constraints locomoting through continuous fluid media. While many studies have explored relationship between locomotion in fluids body mass, none focused how media...
Abstract Turbinals are key bony elements of the mammalian nasal cavity, involved in heat and moisture conservation as well olfaction. While turbinals known some groups, their diversity is poorly understood at scale placental mammals, which span 21 orders. Here, we investigated turbinal bones associated lamellae for one representative each extant order mammals. We segmented isolated independent lamella found an important variation number turbinals, size, shape. that count varies widely, from...
Shrews are among the most speciose of mammalian clades, but their evolutionary history is poorly understood. Their fossil record fragmentary and even anatomy living groups not well documented. Here, we incorporate oldest, complete shrew yet known into first phylogenetic analysis group to include molecular, morphological temporal data. Our study reveals previously unknown diversity total- crown-group soricids. This includes a novel element skeleton: robust, needle-like sesamoid extending...
Assessing spider diversity remains a great challenge, especially in tropical habitats where dozens of species can locally co-occur. Pitfall trapping is one the most widely used techniques to collect spiders, but it suffers from several biases, and its accuracy likely varies with habitat complexity. In this study, we compared efficiency passive pitfall versus active nocturnal hand collecting (NHC) capture low understory-dwelling taxonomical (morpho-species) functional (hunting guilds) along...
The phylogenetic relationships of major groups within the Order Eulipotyphla was once highly disputed, but advent molecular studies has greatly improved our understanding about diversification history talpids, soricids, erinaceids, and solenodontids. Their resolved now allow us to revisit turbinal lamina evolution this group. inner structure nasal cavity mammals is complicated homologies turbinals among mammalian species are still largely unsettled. In regard, investigation on fetal anatomy...
Turbinals are bony or cartilaginous structures that present in the nasal cavity of most tetrapods. They involved key functions such as olfaction, heat, and moisture conservation, well protection respiratory tract. Despite recent studies challenged long-standing hypotheses about their physiological genomic correlation, turbinals remain largely unexplored, particularly for non-mammalian species. Herein, we review synthesise current knowledge using an integrative approach includes comparative...
We describe a new Pristimantis from French Guiana, northern South America, which is mainly distinguished known phenotypically related congeners (i.e. species the polyphyletic unistrigatus group) occurring at low and middle elevations in Guiana Shield by combination of distinct tympanum, lower ratio tibia vs. hand length, reddish groin region, advertisement call consisting clusters generally four short notes. The inhabits pristine primary forests on slopes isolated massifs reaching more than...
Many Amazonian frog species that are considered widely distributed may actually represent polyspecific complexes.. A minute tree from the Guiana Shield originally assigned to allegedly Dendropsophus brevifrons proved be a yet undescribed within D. parviceps group. We herein describe this new and present phylogeny for The is diagnosed other of group by its small body size (19.6-21.7 mm in males, 22.1-24.5 females), thighs dorsally dark grey with cream blotches without bright yellow patch,...
Abstract Climate change is expected to have important impacts on biodiversity. However, cases showing explicit links between species decline and climate are scarce, mostly because of a lack baseline data. Tropical ectotherms with narrow altitudinal ranges particularly sensitive change; for example the frog Pristimantis espedeus may be at risk, only nine populations known date in French Guiana, all isolated massifs. Ecological niche modelling indicated that these could disappear by 2070. To...
The evolution of endothermy in vertebrates is a major research topic recent decades that has been tackled by myriad disciplines including paleontology, anatomy, physiology, evolutionary and developmental biology. ability most mammals to maintain relatively constant high body temperature considered key adaptation, enabling them successfully colonize new habitats harsh environments. It proposed the anterior nasal cavity, which houses maxilloturbinal, plays pivotal role maintenance, via bony...
The length of the snout in mammals has important evolutionary consequences for functional systems housed within rostrum. However, whether increased lengths lead to expanded olfactory performance rarely been examined. Here, we investigate inner rostral function among 10 species myrmecophagous (ant- and/or termite-eating) placental and closely related species. We use nondestructive computed tomography scanning methods characterize based on underlying morphology turbinal bones nasal cavity....
Acquiring a subterranean lifestyle entails substantial shift for many aspects of terrestrial vertebrates' biology. Although this is associated with multiple instances convergent evolution, the relative success some lineages largely remains unexplained. Here, we focus on mammalian transitions to life underground, quantifying bone microanatomy through high-resolution X-ray tomography. The true moles stand out in dataset. Examination family's histology reveals that highly fossorial acquired...
Abstract Background The determination of cytokines in the postoperative drainage (POD) fluid could be a method for early detection development pharyngocutaneous fistula (PCF). Materials and methods We conducted prospective two‐center study involving 28 patients. PODs were collected on Day 1 (D1) 2 (D2) postoperatively cytokine panel cytobacteriological examination. Results Eleven (39%) patients presented with PCF average 13 ± 5.5 days after surgery. Patients had higher IL‐10 (121 vs. 40.3, p...
To obtain a reliable description of spider communities, robust sampling protocols are crucial. However, it remains unclear if descriptions communities in tropical habitats require both day and night sampling. Here we tested whether high low vegetation strata would lead to better diversity estimates than at only one period the day. We determined taxonomic network 12 plots French Guiana along gradient. found alpha spiders as expected for area every site. showed strong differences beta between...
We report a detailed study of band broadening in microfluidic chip for DNA separation by means electrohydrodynamic viscoelatic migration.