A5004699011- Genetic diversity and population structure
- Primate Behavior and Ecology
- Wildlife Ecology and Conservation
- Forensic and Genetic Research
- Amphibian and Reptile Biology
- Genetic and phenotypic traits in livestock
- Genetic Mapping and Diversity in Plants and Animals
- Evolution and Genetic Dynamics
- Animal Behavior and Reproduction
- Evolution and Paleontology Studies
- Genomics and Phylogenetic Studies
- Bat Biology and Ecology Studies
- Forensic Anthropology and Bioarchaeology Studies
- Identification and Quantification in Food
- Animal Vocal Communication and Behavior
- Pleistocene-Era Hominins and Archaeology
- Archaeology and ancient environmental studies
- Fish Ecology and Management Studies
- Ecology and Vegetation Dynamics Studies
- Molecular Biology Techniques and Applications
- Fish Biology and Ecology Studies
- Bayesian Methods and Mixture Models
- Race, Genetics, and Society
- Species Distribution and Climate Change
- Animal Ecology and Behavior Studies
Université Toulouse III - Paul Sabatier
2016-2025
Instituto Gulbenkian de Ciência
2016-2025
Centre National de la Recherche Scientifique
2016-2025
Institut de Recherche pour le Développement
2018-2025
Université de Toulouse
2015-2025
University of Lisbon
2024-2025
Laboratoire Evolution et Diversite Biologique
2015-2024
Centre de Recherche sur la Biodiversité et l'Environnement
2024
Université de Mahajanga
2023
Laboratoire de Biotechnologie de l'Environnement
2011-2015
We challenge the view that our species, Homo sapiens, evolved within a single population and/or region of Africa. The chronology and physical diversity Pleistocene human fossils suggest morphologically varied populations pertaining to H. sapiens clade lived throughout Similarly, African archaeological record demonstrates polycentric origin persistence regionally distinct material culture in variety paleoecological settings. Genetic studies also indicate present-day structure Africa extends...
Many coalescent-based methods aiming to infer the demographic history of populations assume a single, isolated and panmictic population (i.e. Wright-Fisher model). While this assumption may be reasonable under many conditions, several recent studies have shown that results can misleading when it is violated. Among most widely applied inference are Bayesian skyline plots (BSPs), which used across range biological fields. Violations panmixia expected in systems, but consequences for plot...
Abstract The idea that molecular data should contain information on the recent evolutionary history of populations is rather old. However, much work carried out today owes to statisticians and theoreticians who demonstrated it was possible detect departures from equilibrium conditions (e.g., panmictic population/mutation–drift equilibrium) interpret them in terms deviations neutrality or stationarity. During last 20 years detection population size changes has usually been under assumption...
Community-based management, ecotourism, and researchers' presence are proposed to prevent lemur extinctions.
Great ape populations are undergoing a dramatic decline, which is predicted to result in their extinction the wild from entire regions near future. Recent findings have particularly focused on African apes, and implicated multiple factors contributing this such as deforestation, hunting, disease. Less well-publicised, but equally dramatic, has been decline orang-utans, whose distribution limited parts of Sumatra Borneo. Using largest-ever genetic sample orang-utan populations, we show strong...
There still is no general agreement on the origins of European gene pool, even though Europe has been more thoroughly investigated than any other continent. In particular, there continuing controversy about relative contributions Palaeolithic hunter-gatherers and migrant Near Eastern Neolithic farmers, who brought agriculture to Europe. Here, we apply a statistical framework that have developed obtain direct estimates contribution these two groups at time they met. We analyze large dataset...
Abstract We investigated the genetic structure within and among Bornean orang‐utans ( Pongo pygmaeus ) in forest fragments of Lower Kinabatangan flood plain Sabah, Malaysia. DNA was extracted from hair faecal samples for 200 wild individuals collected during boat surveys on River. Fourteen microsatellite loci were used to characterize patterns diversity. found that diversity high set (mean H E = 0.74) differentiation significant between (average F ST 0.04, P < 0.001) with values ranging...
Recent papers have promoted the view that model-based methods in general, and those based on Approximate Bayesian Computation (ABC) particular, are flawed a number of ways, therefore inappropriate for analysis phylogeographic data. These further argue Nested Clade Phylogeographic Analysis (NCPA) offers best approach statistical phylogeography. In order to remove confusion misconceptions introduced by these papers, we justify explain reasoning behind inference. We ABC is statistically valid...
Habitat fragmentation may strongly reduce individuals' dispersal among resource patches and hence influence population distribution persistence. We studied the impact of landscape heterogeneity on golden-crowned sifaka (Propithecus tattersalli), an endangered social lemur species living in a restricted highly fragmented landscape. combined spatial analysis genetics methods to describe units identify environmental factors which best predict rates patterns genetic differentiation within...
In tropical regions, most primary ecosystems have been replaced by mosaic landscapes in which species must cope with a large shift the distribution of their habitat and associated food resources. Primates are particularly vulnerable to modifications. Most persist small fragments surrounded complex human-mediated matrices whose structure connectivity may strongly influence dispersal feeding behavior. Behavioral plasticity appears be crucial parameter governing ability organisms exploit...
Abstract The Neolithic transition has been widely debated particularly regarding the extent to which this revolution implied a demographic expansion from Near East. We attempted shed some light on process in northeastern Iberia by combining ancient DNA (aDNA) data Early settlers and published Middle modern samples same region. successfully extracted amplified mitochondrial 13 human specimens, found at three archaeological sites dated back Cardial culture (Can Sadurní Chaves) Late (Sant Pau...
Several inferential methods using genomic data have been proposed to quantify and date population size changes in the history of species. At same time an increasing number studies shown that structure can generate spurious signals change. Recently, Mazet et al. (2016) introduced, for a sample two, time-dependent parameter, which they called IICR (inverse instantaneous coalescence rate). The is equivalent panmictic models, but not necessarily structured models. It characterised by temporal...
Significance Many species live in socially structured populations, forming cohesive units with kin structure. Yet, sociality has been neglected by population geneticists under the assumption that social groups can be seen as small demes subjected to significant genetic drift. Such are usually considered susceptible inbreeding, inbreeding avoidance becoming a major force explaining dispersal strategies. We find structure is highly effective maintaining high genotypic and diversity levels,...
Delimitation of cryptic species is increasingly based on genetic analyses but the integration distributional, morphological, behavioral, and ecological data offers unique complementary insights into diversification. We surveyed communities nocturnal mouse lemurs (Microcebus spp.) in five different sites northeastern Madagascar, measuring a variety morphological parameters assessing reproductive states for 123 individuals belonging to lineages. documented two non-sister lineages occurring...
Abstract Several African mammals exhibit a phylogeographic pattern where closely related taxa are split between West/Central and East/Southern Africa, but their evolutionary relationships histories remain controversial. Bushpigs ( Potamochoerus larvatus ) red river hogs P. porcus recognised as separate species due to morphological distinctions, perceived lack of interbreeding at contact, putatively old divergence times, historically, they were considered conspecific. Moreover, the presence...
Comparisons between archaeological findings and allele frequencies at protein loci suggest that most genes of current Europeans descend from populations have been expanding in Europe the last 10,000 years, Neolithic period. Recent mitochondrial data interpreted as indicating a much older, Paleolithic ancestry. In spatial autocorrelation study seven hypervariable (four microsatellites, two larger, tandem-repeat loci, sequence polymorphism) broad clinal patterns DNA variation were recognized....
Polymorphism of microsatellite markers was used to study the genetic variability and structure in natural populations European sea bass Dicentrarchus labrax . The data consisted six loci analysed for 172 individuals from three samples collected Golfe‐du‐Lion (France) one sample Golfo‐de‐Valencia (Spain). Our goals were (i) assess level as revealed by these markers, (ii) estimate differentiation among within a restricted area, (iii) evaluate how fit predictions two most widely mutation models...
Abstract Behavioural observations suggest that orang‐utans are semi‐solitary animals with females being philopatric and males roaming more widely in search of receptive partners, leading to the prediction closely related than at any given site. In contrast, our study presents evidence for male female philopatry orang‐utan. We examined patterns relatedness parentage a wild orang‐utan population Borneo using noninvasively collected DNA samples from observed defecate, microsatellite markers...