A5023758992- Amphibian and Reptile Biology
- Species Distribution and Climate Change
- Animal Behavior and Reproduction
- Lepidoptera: Biology and Taxonomy
- Plant and animal studies
- Wildlife Ecology and Conservation
- Study of Mite Species
- Genetic diversity and population structure
- Phonetics and Phonology Research
- Insect and Arachnid Ecology and Behavior
- Spider Taxonomy and Behavior Studies
- Animal and Plant Science Education
- Genomics and Phylogenetic Studies
- Vector-borne infectious diseases
- Mosquito-borne diseases and control
- Turtle Biology and Conservation
- Aquatic Invertebrate Ecology and Behavior
- Ichthyology and Marine Biology
- Neurobiology and Insect Physiology Research
- Viral Infections and Vectors
- Bat Biology and Ecology Studies
- Ecology, Conservation, and Geographical Studies
- Parasite Biology and Host Interactions
- Antimicrobial Peptides and Activities
- Fish Biology and Ecology Studies
Bielefeld University
2016-2023
Technische Universität Braunschweig
2010-2013
University of Amsterdam
1977
Zoological Institute
1977
Amsterdam Museum
1977
The Tsaratanana Massif is the highest mountain massif of Madagascar and characterized by a high species-level endemism its biota. Here we describe two new small-sized species leaf-tailed geckos Uroplatus ebenaui group from this region. Named in preliminary way as confirmed candidate [Ca1] [Ca2] previous studies, here provide detailed data on their molecular morphological differentiation them fotsivava sp. nov. kelirambo Their closest relatives are U. fiera finiavana, respectively, revealed...
The Mascarene ridged frog, Ptychadena mascareniensis, is a species complex that includes numerous lineages occurring mostly in humid savannas and open forests of mainland Africa, Madagascar, the Seychelles, Islands. Sampling across this broad distribution presents an opportunity to examine genetic differentiation within investigate how evolution bioclimatic niches may have shaped current biogeographic patterns. Using model-based phylogenetic methods molecular-clock dating, we constructed...
We review the intrageneric systematics of day geckos, genus Phelsuma (Squamata: Sauria: Gekkonidae) in light a recently published multigene phylogeny, and provide an overview 19 selected chromatic, morphological behavioural characters for all currently recognized species subspecies genus. To replace previous attempts dividing into phenetic assemblages, we propose following monophyletic groups summarize that partly support this grouping: barbouri group (P. barbouri, P. pronki); dubia...
Abstract We conducted a comprehensive molecular phylogenetic study for group of chameleons from Madagascar (Chamaeleonidae: Calumma nasutum group, comprising seven nominal species) to examine the genetic and species diversity in this widespread genus. Based on DNA sequences mitochondrial gene ( ND2 ) 215 specimens, we reconstructed phylogeny using Bayesian approach. Our results show deep divergences among several unnamed lineages that are difficult identify morphologically. evaluated lineage...
Abstract Aim We studied the gecko genus Ebenavia to reconstruct its colonization history, test for anthropogenic versus natural dispersal out of Madagascar, and correlate divergence date estimates our phylogeny with geological age islands in region. Location Madagascar surrounding Western Indian Ocean (Comoros, Mayotte, Mauritius, Pemba). Methods reconstructed covering entire geographical range using a molecular data set three mitochondrial two nuclear markers. estimated times based on...
The Lygodactylus madagascariensis species group, constituting the subgenus Domerguella, currently contains five valid of inconspicuous dwarf geckos from Madagascars humid forests, but at least 18 deep genetic lineages have been revealed by recent molecular studies. Given high morphological similarity these lineages, taxonomic resolution this astonishing diversity requires efforts to correctly delimit species, as well assigning available nomina species-level identified. We here combine DNA...
We describe a new Phelsuma species from the relictual forest of Anja Reserve (13 km south Ambalavao, on central high plateau southern Madagascar). gouldi sp. nov. seems to be an arboreal and possibly rockdwelling that has been observed in private (949 m a.s.l.), near Betroka almost 160 further south-west. The belongs P. mutabilis group differs other three group, mutabilis, breviceps, borai by genetic divergence more than 10% mitochondrial 16S rRNA gene, combination 7–9 subdigital lamellae...
Abstract We describe Calumma vohibola sp. nov., a morphologically distinct chameleon species of the nasutum group from littoral forest fragments north-central east coast Madagascar. Males and females this differ all other by an almost absent rostral appendage, characteristic stress colouration in female consisting dark reddish ground with many irregular light blue spots, significant sequence divergence mitochondrial ND2 gene (10.5–19.4% pairwise distance) no haplotype sharing nuclear C-mos...
Field surveys in northeastern Madagascar have revealed the existence of a new Blommersia frog species (Anura: Mantellidae), populations which were recorded within 30 km radius town Maroantsetra. We combined morphological, bioacoustic and molecular techniques show that it is indeed distinct evolutionary lineage we describe as variabilis sp. nov. from type locality Ambodivoahangy near This morphologically most similar to B. wittei by presence vomerine teeth relatively small, well-delimited...
Paroedura hordiesi sp. n. is described from Montagne des Français, a karstic limestone massif in the far north of Madagascar recently established as nature reserve. The new species has nostril contact with rostral scale and shares many characters P. karstophila especially homalorhina which are also restricted to habitats. differs by smoother skin on dorsum legs, original regenerated tails being both entirely smooth, colouration, larger snout-vent length. Morphologically most similar Ankarana...
We describe a new gecko of the genus Blaesodactylus from dry forest in Ankarafantsika National Park, western Madagascar. ambonihazo sp. nov. is distinguished by its medium size, small and homogeneous gular granules, unspotted ventral side, lack tubercles on distal part original tail. The species, for which we propose an IUCN Red List status "Data Deficient", also characterized strong differentiation mitochondrial DNA unique haplotype nuclear Rag-1 gene. molecular data presented herein...
Chameleons of the Madagascan endemic genus Brookesia Gray are small to extremely reptiles with a mostly terrestrial lifestyle, and due their low mobility camouflage they nearly invisible in leaf litter Madagascar's forests. The is widely distributed (except arid south south-west) but many species restricted relatively area island (Glaw & Vences 2007). Speciation has been most prolific northern parts Madagascar, an that currently host about two-thirds 27 nominal (Raxworthy Nussbaum 1995;...
The distribution of the larvae Eylais discreta on abdominal tergites host species Sigara striata, S. falleni and Cymatia coleoptrata is examined. On striata segments 3 4, C. 2 are successively preferred. There but little influence multiple infestations this distribution. growth rate various similar, while a possible difference could not be proved statistically. E. generally hibernate host; during phase there growth; until March-April they start growing faster. coleoptrataare retarded in...
The small arboreal frog Guibemantis liber (Anura: Mantellidae) has served as an example for the existence of deep conspecific lineages that differ by a substantial amount in mitochondrial DNA but are similar morphology and bioacoustics thus assigned to same nominal species. During fieldwork northern Madagascar, we identified additional such surprisingly, observed close syntopy two these at various sites. In-depth study based on sequences cytochrome b gene from 338 specimens G. sensu lato...