A5027974207- Amphibian and Reptile Biology
- Species Distribution and Climate Change
- Animal Behavior and Reproduction
- Genetic diversity and population structure
- Wildlife Ecology and Conservation
- Mosquito-borne diseases and control
- Genomics and Phylogenetic Studies
- Turtle Biology and Conservation
- Bat Biology and Ecology Studies
- Lepidoptera: Biology and Taxonomy
- Evolution and Paleontology Studies
- Plant and animal studies
- Primate Behavior and Ecology
- Antimicrobial Peptides and Activities
- Vector-borne infectious diseases
- Spider Taxonomy and Behavior Studies
- Viral Infections and Vectors
- Insect Utilization and Effects
- Digital Imaging for Blood Diseases
- Fish biology, ecology, and behavior
- Ecology and Vegetation Dynamics Studies
- Fish Biology and Ecology Studies
- African Botany and Ecology Studies
- Venomous Animal Envenomation and Studies
- Identification and Quantification in Food
University of Antananarivo
2014-2024
Association Vahatra
2012-2024
BP (United Kingdom)
2023-2024
Génétique Animale et Biologie Intégrative
2023-2024
Laboratoire de Mathématiques d'Orsay
2024
Bavarian State Collection of Zoology
2015
Field Museum of Natural History
2005
National Academy of Sciences
2005
National Academies of Sciences, Engineering, and Medicine
2005
Abstract One of the predicted biological responses to climate warming is upslope displacement species distributions. In tropics, because montane assemblages frequently include local endemics that are distributed close summits, these may be especially vulnerable experiencing complete habitat loss from warming. However, there currently a dearth information available for tropical regions. Here, we present preliminary appraisal this extinction threat using herpetological assemblage Tsaratanana...
The Marojejy Massif in northern Madagascar is a constant source of herpetological surprises. Herein we describe new species leaf-mimicking leaf-tailed gecko, Uroplatus finaritra sp. nov., based on morphological and molecular phylogenetic evidence. This inhabits the rainforests National Park at low elevations morphologically similar to phantasticus, but differs by having larger body size, relatively shorter tail, dark-red pigmentation oral mucosa. Molecular data reveals distance 14.0–14.7%...
Previous studies on leaf-tailed geckos of the genus Uroplatus identified a lineage from Ankarana karst massif in northern Madagascar as genetically highly divergent, but only fragmentary information was available these geckos. Here, we provide an integrative analysis based molecular and morphological data, including newly collected specimen this locality. Phylogenetic placed sister to U. ebenaui, with surprisingly high genetic divergence over 19% uncorrected pairwise distance mitochondrial...
The northern part of Madagascar is well known for its high species diversity and endemism. Exceptional richness related to the existence large forest blocks mountain complexes. These areas shelter a diverse variety habitats occupied by wide species, including leaf-tailed geckos genus Uroplatus. Based on morphological molecular evidence, we here formally name two evolutionary lineages as new that previously had been considered candidate (Uroplatus spp. Ca3 Ca4), both small-sized Uroplatus...
Background An understanding of the conservation status Madagascar's endemic reptile species is needed to underpin planning and priority setting in this global biodiversity hotspot, complement existing information on island's mammals, birds amphibians. We report here first systematic assessment extinction risk native non-marine Malagasy snakes, lizards, turtles tortoises. Methodology/Principal Findings Species range maps from The IUCN Red List Threatened were analysed determine patterns...
The genus Scaphiophryne (Anura: Microhylidae) contains at least nine species that, together with their probable sister Paradoxophyla, form the Madagascar-endemic subfamily Scaphiophryninae. are robust burrowing frogs explosive breeding behavior and characterized by a unique larval morphology, being intermediate between that of filter-feeding generalized tadpole types. Based on nominal subgenus can be distinguished from Pseudohemisus, clade occurring in arid biomes largely unsolved taxonomy...
The Lygodactylus tolampyae complex includes several deep genetic lineages of small diurnal geckos from the West and North Madagascar whose taxonomy is largely unsolved. We sequenced DNA fragments one mitochondrial four nuclear-encoded genes for up to 70 samples across entire known range these geckos. find as many 11 differentiated by >4% pairwise distances in 16S rRNA gene fragment, with >9% distance majority lineage comparisons. Many were concordantly all without any haplotype...
The biodiversity of Madagascar is extraordinarily distinctive, diverse, and endangered. It therefore urgent that steps be taken to document, describe, interpret, protect this exceptional biota. As a collaborative group field laboratory biologists, we employ suite methodological analytical tools investigate the vertebrate portion Madagascar's fauna. Given species are fundamental unit evolution, where micro- macroevolutionary forces converge generate biological diversity, thorough...
Madagascar velvet geckos, genus Blaesodactylus, are classified in six species distributed over low-elevation sites across most of Madagascar. Based on DNA sequences one mitochondrial and two nuclear-encoded gene fragments obtained from numerous newly collected tissue samples, we provide an updated review their molecular variation. Our genetic screening confirms extended distribution B. ambonihazo, so far only known its type locality Ankarafantsika, now reaching northwards to the Sahamalaza...
A fundamental assumption of evolutionary biology is that phylogeny follows a bifurcating process. However, hybrid speciation and introgression are becoming more widely documented in many groups. Hybrid inference studies have been historically limited to small sets taxa, while exploration the prevalence trends reticulation at deep time scales remains unexplored. We study history an adaptive radiation 109 gemsnakes Madagascar (Pseudoxyrhophiinae) identify potential instances introgression....
Speciation rates vary substantially across the tree of life. These should be linked to rate at which population structure forms if a continuum between micro and macroevolutionary patterns exists. Previous studies examining link speciation degree formation in clades have been shown either correlated or uncorrelated depending on group, but no study has yet examined relationship young group that is constrained spatially single-island system. We examine this correlation 109 gemsnakes...
The black-spined toad, Duttaphrynus melanostictus , is widespread in South and South-East (SE) Asia, although recent molecular analyses have revealed that it represents a species complex (here called the D. complex). Invasive populations of this toad been detected Madagascar since, at least, 2014. We here trace origin introduction based on mitochondrial DNA sequences 340 samples. All 102 specimens from identical pointing to single event. Their haplotype corresponds lineage occurring...
Abstract Taxonomic progress is often hindered by intrinsic factors, such as morphologically cryptic species that require a broad suite of methods to distinguish, and extrinsic uncertainties in the allocation scientific names species. These can be due wide variety including old poorly preserved type specimens (which contain only heavily degraded DNA or have lost important diagnostic characters), inappropriately chosen (e.g. juveniles without characters) documented (with unprecise, incorrect,...
The highly diverse snake superfamily Elapoidea is considered to be a classic example of ancient, rapid radiation. Such radiations are challenging fully resolve phylogenetically, with the case in point. Previous attempts at inferring phylogeny elapoids produced incongruent estimates their evolutionary relationships, often very low statistical support. We sought this situation by sequencing over 4,500 ultraconserved element loci from multiple representatives every elapoid family/subfamily...
Abstract Processes leading to spectacular diversity of both form and species on islands have been well-documented under island biogeography theory, where distance from source size are key factors determining immigration extinction resistance. But far less understood the processes governing in situ diversification world’s mega islands, large isolated land masses produced morphologically distinct radiations related taxa continental regions. Madagascar has long recognized as a natural...
Few details are available on the consumption of ectoparasites, specifically bat flies (Diptera: Nycteribiidae and Streblidae), by their chiropteran hosts while grooming. Such important to document rates ectoparasites host provide dynamics host-parasite interactions. We present data ectoparasite for an endemic Malagasy fruit (Pteropodidae: Rousettus madagascariensis) occupying a cave day roost colony in northern Madagascar. Using quantified behavioral analyses, grooming associated ingestion...
Malagasy frogs of the subgenus Brygoomantis in mantellid frog genus Mantidactylus currently comprise 14 described species mostly brown, riparian frogs. Data from DNA barcoding suggested that diversity this is dramatically underestimated by current taxonomy. We here provide a comprehensive revision subgenus. use hybrid-enrichment based barcode fishing to obtain mitochondrial fragments name-bearing type material 16 20 available names for members subgenus, and integrate these into genetic...
Abstract Lizards and snakes exhibit colour variation of adaptive value for thermoregulation, camouflage, predator avoidance, sexual selection speciation. Furcifer pardalis , the panther chameleon, is one most spectacular reptilian endemic species in Madagascar, with pronounced dimorphism exceptionally large intraspecific male coloration. We perform here an integrative analysis molecular phylogeography after collecting high‐resolution photographs blood samples from 324 F. individuals...
Abstract How environmental factors shape patterns of biotic diversity in tropical ecosystems is an active field research, but studies examining the possibility ecological speciation terrestrial are scarce. We use isolated rainforest herpetofauna on Montagne d'Ambre (Amber Mountain) massif northern Madagascar as a model to explore elevational divergence at level populations and communities. Based intensive sampling DNA barcoding amphibians reptiles along transect ranging from ca. 470–1470 m...
Abstract Understanding the remarkably high species diversity and levels of endemism found among Madagascar’s flora fauna has been focus many studies. One hypothesis that received much attention proposes Quaternary climate fluctuations spurred diversification. While spatial patterns distribution phylogenetic relationships can provide support for biogeographic predictions, temporal estimates divergence are required to determine fit these geospatial climatic or mechanisms. We use multilocus DNA...
The distribution and population density of the Critically Endangered Tarzan Chameleon (Calumma tarzan) in eastern humid forests Madagascar was studied using line transect-distance sampling. Based on results from species models, eight sites were visited over a four-month period February 2020 to March 2021. In total, 46 transects 1 km investigated 23 different forest fragments understand C. tarzan. Another 28 200 m length surveyed estimate density. Among fragments, tarzan confirmed 14...