A5072176314- Evolution and Paleontology Studies
- Morphological variations and asymmetry
- Pleistocene-Era Hominins and Archaeology
- Wildlife Ecology and Conservation
- Paleontology and Evolutionary Biology
- Amphibian and Reptile Biology
- Primate Behavior and Ecology
- Forensic Anthropology and Bioarchaeology Studies
- Bat Biology and Ecology Studies
- Animal Ecology and Behavior Studies
- Genetic and phenotypic traits in livestock
- Archaeology and ancient environmental studies
- Species Distribution and Climate Change
- Animal Behavior and Reproduction
- Geology and Paleoclimatology Research
- Genetic diversity and population structure
- dental development and anomalies
- Plant and animal studies
- Human-Animal Interaction Studies
- Animal Behavior and Welfare Studies
- Veterinary Equine Medical Research
- Action Observation and Synchronization
- Turtle Biology and Conservation
- Insect behavior and control techniques
- Animal Vocal Communication and Behavior
Institut de Systématique, Évolution, Biodiversité
2015-2024
École Pratique des Hautes Études
2015-2024
Sorbonne Université
2015-2024
Centre National de la Recherche Scientifique
2015-2024
Muséum national d'Histoire naturelle
2005-2024
Structure et Instabilité des Génomes
2013-2020
Google (United States)
2020
Université des Antilles
2019
Histoire Naturelle de l’Homme Préhistorique
2018
Université Paris Cité
2016
Abstract Recent advances in molecular phylogenetics and a series of important palaeobotanical discoveries have revolutionized our understanding angiosperm diversification. Yet, the origin early evolution their most characteristic feature, flower, remains poorly understood. In particular, structure ancestral flower all living angiosperms is still uncertain. Here we report model-based reconstructions for flowers at deepest nodes phylogeny angiosperms, using largest data set floral traits ever...
Evolutionary morphologists frequently wish to understand the extent which organisms are integrated, and whether strength of morphological integration among subsets phenotypic variables differ taxa or other groups. However, comparisons across datasets difficult, in part because summary measures that characterize these patterns (RV coefficient rPLS) dependent both on sample size number variables. As a solution this issue, we propose standardized test statistic (a z-score) for measuring degree...
Abstract Convergence in morphology can result from evolutionary adaptations species living environments with similar selective pressures. Here, we investigate whether the shape of forelimb long bones has converged imposing functional constraints, using musteloid carnivores as a model. The limbs quadrupeds are subjected to many factors that may influence their shape. They need support body mass without collapsing or breaking, yet at same time resist stresses and strains induced by locomotion....
Abstract The ability to grasp and manipulate is often considered a hallmark of hominins associated with the evolution their bipedal locomotion tool use. Yet, many other mammals use forelimbs objects. Previous investigations have suggested that grasping may be derived from digging behaviour, arboreal or hunting behaviour. Here, we test origin investigate whether an lifestyle could confer greater in musteloid carnivorans. Moreover, morphological adaptations related differences between species...
The locomotor environment and behavior of quadrupedal mammals exert functional constraints on their limbs. Therefore long bone shapes are thought to reflect at least partially the species' ecology. Semi-aquatic species move through two media with distinct density viscosity apparatus should therefore a trade-off between divergent it faces. Adaptation semi-aquatic lifestyle occurred independently in otters (Lutrinae) minks (Mustelinae). Analyzing mustelids terrestrial relatives, we investigate...
Abstract Morpho‐functional patterns are important drivers of phenotypic diversity given their importance in a fitness‐related context. Although modularity the mandible and skull has been studied extensively mammals, few studies have explored shape co‐variation between these two structures. Despite being developmentally independent, form functionally integrated unit. In present paper we use 3D surface geometric morphometric methods allowing us to explore both its complexity using greater...
Butterfly wings harbor highly diverse phenotypes and are involved in many functions. Wing size shape result from interactions between adaptive processes, phylogenetic history, developmental constraints, which complex to disentangle. Here, we focus on the genus Morpho (Nymphalidae: Satyrinae, 30 species), presents a high diversity of sizes, shapes, color patterns. First, generate comprehensive molecular phylogeny these species. Next, using 911 collection specimens, quantify variation wing...
ABSTRACT Phenotypic plasticity has been proposed as a mechanism that facilitates the success of biological invasions. In order to test hypothesis an adaptive role for in invasions, particular attention should be paid relationship between focal plastic trait, environmental stimulus and functional importance trait. The Drosophila wing is particularly amenable experimental studies phenotypic plasticity. Wing morphology known its variation under different temperatures, but this rarely...
The forelimb forms a functional unit that allows variety of behaviours and needs to be mobile, yet at the same time stable. Both mobility stability are controlled, amongst others, level elbow joint. This joint is composed humero-ulnar articulation, mainly involved during parasagittal movements; radio-ulnar allowing rotation. In contrast, humero-radial articulation both movements flexion-extension Here, we study morphological integration between each bone entire arm, as well joint, in...
Graviportal taxa show an allometric increase of the cross-sectional area supportive bones and are assumed to display microanatomical changes associated with in bone mass. This evokes osteosclerosis (i.e. compactness observed some aquatic amniotes). The present study investigates bones' organization graviportality how comparable they aquatically acquired aiming better understand adaptation different functional requirements. Bones graviportal that not solely attributable allometry. They a...
Differences between the sexes may arise because of differences in reproductive strategy, with females investing more traits related to output and males resource holding capacity territory defence. Sexual dimorphism is widespread lizards many species also differ head shape. Males typically have bigger heads than resulting intersexual bite force. Whereas most studies documenting dimensions use linear dimensions, geometric morphometrics has been advocated as appropriate characterize such...
In the majority of mammals, limbs are positioned under body and play an important role in gravitational support, allowing transfer load providing stability to animal. For this reason, animal's mass likely has a significant effect on shape its limb bones. present study, we investigate influence variation three long bones forelimb group closely-related species mammals: musteloid carnivorans. We use geometric morphometric techniques quantify shape; then estimate phylogenetic signal each bone;...
Evolutionary trajectories are often biased by developmental and historical factors. However, environmental factors can also impose constraints on the evolutionary of organisms leading to convergence morphology in similar ecological contexts. The physical properties water strong aquatic feeding animals generating pressure waves that alert prey potentially push them away from mouth. These hydrodynamic have resulted independent evolution suction most groups secondarily tetrapods. Despite fact...
Among amniotes, numerous lineages are subject to an evolutionary trend toward body mass and size increases. Large terrestrial species may face important constraints linked weight bearing, the limb segments particularly affected by such due their role in support locomotion. Such groups showing modifications related high have been called “graviportal.” Often considered graviportal, rhinoceroses among heaviest mammals thus of particular interest understand increase. Here, we present a...
Abstract Aim This study aims to reconstruct the evolutionary history of African rodent genus Malacomys and identify factors driving diversification within this genus. Location tropical lowland forest. Methods Analyses were based on sampling representatives from most known geographical range We assessed genetic structure historical biogeography using a combination mitochondrial nuclear markers. Morphological differences between lineages analysed geometric morphometric approach. Results Three...
Despite a diversity of about 10 000 extant species, the sophisticated avian ‘body plan’ has not much changed once it was achieved around 160 Ma after origin powered flight. All birds are bipedal having wings, rigid trunk, short and ossified tail, three-segmented leg digitigrade feet. The neck, however, always been regarded as classic example high variability ranging from necks in songbirds to extremely long, serpentine herons. Yet, wide array small very large species makes difficult evaluate...
The challenging complexity of biological structures has led to the development several methods for quantitative analyses form. Bones are shaped by interaction historical (phylogenetic), structural, and functional constrains. Consequently, bone shape been investigated intensively in an evolutionary context. Geometric morphometric approaches allow description object all its complexity. However, when objects present only few anatomical landmarks, sliding semi-landmarks may provide good...
The Persian Jird, Meriones persicus, is distributed from Eastern Anatolia to Afghanistan and western Pakistan. Six subspecies were described based on skull features coat colours, but the validity of these uncertain, no molecular work has ever been conducted this species. Iran appears be a key geographical region in which revise systematic evolutionary history species, because five six are present country. To evaluate phylogeographical taxonomy species Iran, we used combination genetic...
Deciphering the plastic (non-heritable) changes induced by human control over wild animals in archaeological record is challenging. We hypothesized that locomotor behaviour a ungulate due to mobility could be quantified bone anatomy. To test this, we experimented with effect of reduction on skeleton boar (Sus scrofa), using calcaneus shape as possible phenotypic marker. first assessed differences variation and covariation captive-reared wild-caught boars, taking into account sex, body mass,...
The structure, composition, and shape of teeth have been related to dietary specialization in many vertebrate species, but comparative studies on snakes' are lacking. Yet, snakes diverse habits that may impact the their teeth. We hypothesize prey properties, such as hardness shape, well feeding behavior, aquatic or arboreal predation, holding vigorous prey, impose constraints evolution tooth snakes. compared morphology dentary 63 species cover phylogenetic diversity snakes, using 3D...