A5075778906- Genetic diversity and population structure
- Amphibian and Reptile Biology
- Species Distribution and Climate Change
- Wildlife Ecology and Conservation
- Morphological variations and asymmetry
- Genomics and Phylogenetic Studies
- Animal Behavior and Reproduction
- Evolution and Paleontology Studies
- Identification and Quantification in Food
- Plant and animal studies
- Fish Ecology and Management Studies
- Environmental DNA in Biodiversity Studies
- Ecology and Vegetation Dynamics Studies
- Bat Biology and Ecology Studies
- Animal Ecology and Behavior Studies
- Evolution and Genetic Dynamics
- Genetic Mapping and Diversity in Plants and Animals
- Insect and Arachnid Ecology and Behavior
- Spider Taxonomy and Behavior Studies
- Botany and Plant Ecology Studies
- T-cell and B-cell Immunology
- Animal and Plant Science Education
- Geological Studies and Exploration
- Chromosomal and Genetic Variations
- Wildlife-Road Interactions and Conservation
Naturalis Biodiversity Center
2015-2024
Leiden University
2020-2024
John Wiley & Sons (United States)
2023
Liechtenstein Institute
2023
Hudson Institute
2023
Natural History Museum Rotterdam
2007-2020
Systematic (Netherlands)
2019
Adnan Menderes University
2018
University College London
2017
Utah State University
2017
Significance Snake venoms are toxic protein cocktails used for prey capture. To investigate the evolution of these complex biological weapon systems, we sequenced genome a venomous snake, king cobra, and assessed composition venom gland expressed genes, small RNAs, secreted proteins. We show that regulatory components secretory system may have evolved from pancreatic origin toxin genes were co-opted by distinct genomic mechanisms. After co-option, important capture massively expanded gene...
Abstract The newts Triturus vulgaris and montandoni are sister species that exhibit contrasting levels of intraspecific morphological variation. has a broad Eurasiatic distribution encompassing both formerly glaciated unglaciated areas shows substantial differentiation in the southern part its range, while T. , confined to Carpathians, is morphologically uniform. We analysed sequence variation two mtDNA fragments total length c . 1850 bp 285 individuals collected from 103 localities....
The major climatic oscillations during the Quaternary Ice Age heavily influenced distribution of species and left their mark on intraspecific genetic diversity. Past range shifts can be reconstructed with aid modeling phylogeographical analyses. We test responses different members genus Triturus (i.e. marbled crested newts) as climate shifted from previous glacial period (the Last Glacial Maximum, ~21 Ka) to current interglacial. present results a dense mitochondrial DNA phylogeography...
Habitat loss, together with less obvious land-use changes such as intensified farming practice, can have significant adverse impacts on biodiversity. An important factor in determining the ability of species to cope is their potential sustain a populations network by dispersal across landscape. quality and structure are particularly for surface-dwelling low abilities, amphibians. To assess this ecological function, ponds coastal typically rural area northern France were surveyed amphibians...
Comparative studies of mortality in the wild are necessary to understand evolution aging; yet, ectothermic tetrapods underrepresented this comparative landscape, despite their suitability for testing evolutionary hypotheses. We present a study aging rates and longevity across tetrapod ectotherms, using data from 107 populations (77 species) nonavian reptiles amphibians. test hypotheses how thermoregulatory mode, environmental temperature, protective phenotypes, pace life history contribute...
European marbled newts come in two species that have abutting ranges. The northern species, Triturus marmoratus, is found France and the part of Iberian Peninsula whereas southern T. pygmaeus, southwestern corner Peninsula. We study intraspecific genetic differentiation group because morphological data show geographical variation a recognized center speciation diversity for all kinds organisms, amphibians included. use target enrichment by sequence capture to generate c. 7 k nuclear DNA...
Amphibian populations are increasingly sampled with traps instead of the traditional dipnet, because high yields at a comparatively low workload. Observations on sympatric newt species in west France uncovered size effect which larger Triturus cristatus and T. marmoratus were more frequently captured than smaller Lissotriton helveticus L. vulgaris . The small juveniles large interspecies hybrids fitted this series. lightweight, collapsable, easy to clean funnel here employed useful for...
Two hybridizing species of newts, Triturus cristatus and T. marmoratus, with overlapping distributions show a parapatric distribution when surveyed in detail. The factors that govern the vs. marmoratus département (province) Mayenne western France are identified as forestation relief. hybrid zone running through is narrow but widens to approximately 20 km an area mixed habitat. In this most breeding sites shared F1 hybrids form about 4% total population. Analysis survey data collected 30...
The crested newt has a widespread European distribution and encompasses four taxa recently elevated to full species: Triturus cristatus, T. carnifex, dobrogicus, karelini. These are distinct on morphological, chromosomal, isozymic grounds have fairly sharp transition zones. A survey (12 countries, 49 geographic sites, 210 individuals) of mtDNA variation (20-27 restriction enzyme sites mapped per individual) was made in order 1) correlate with morphological features defining the species, 2)...
Abstract The monophyly of European newts the genus Triturus within family Salamandridae has for decades rested on presumably homologous behavioral and morphological characters. Molecular data challenge this hypothesis, but phylogenetic position not yet been convincingly resolved. We addressed issue temporal divergence with novel Bayesian approaches applied to DNA sequence from three mitochondrial genes (12S, 16S cyt b ). included 38 salamandrid species comprising all 13 recognized 16 out 17...
The rapid radiation of crested newts (Triturus cristatus superspecies) comprises four morphotypes: 1) the T. karelinii group, 2) carnifex - macedonicus, 3) and 4) dobrogicus. These vary in body build number rib-bearing pre-sacral vertebrae (NRBV). phylogenetic relationships morphotypes have not yet been settled, despite several previous attempts, employing a variety molecular markers. We here resolve newt phylogeny by using complete mitochondrial genome sequences.Bayesian inference based on...
Speciation typically involves a stage in which species can still exchange genetic material. Interspecific gene flow is facilitated by the hybrid zones that such establish upon secondary contact. If one member of hybridizing pair displaces other, their zone would move across landscape. Although theory predicts moving quickly stagnate, tracked over or few decades do not always follow limitation. This suggests have potential to traverse considerable distances extended periods time. When move,...
Abstract The pervasive and unabated nature of global amphibian declines suggests common demographic responses to a given driver, quantification major drivers could inform broad-scale conservation actions. We explored the influence climate on parameters (i.e., changes in probabilities survival recruitment) using 31 datasets from temperate zone populations (North America Europe) with more than decade observations each. There was evidence for an population rates, but direction magnitude highly...
The shape of hybrid zones provides insight into genetic isolation between the evolutionary lineages involved: greater limitation to gene flow, farther along unimodal bimodal continuum. We study zone modality in a group closely related species at variety levels divergence. explore degree and geography hybridization 12 transects Triturus newts, for nine ten secondary contact Europe, using nuclear mitochondrial encoded data morphological characteristics. Species status is verified by examining...
Abstract Cryptic phylogeographic diversifications provide unique models to examine the role of phylogenetic divergence on evolution reproductive isolation, without extrinsic factors such as ecological and behavioural differentiation. Yet, date very few comparative studies have been attempted within radiations. Here, we characterize a new speciation continuum in group widespread Eurasian amphibians, Pelobates spadefoot toads, by conducting multilocus (restriction site associated DNA...
Newts of the genus Triturus (marbled and crested newts) exhibit substantial variation in number trunk vertebrae (NTV) a higher NTV corresponds to longer annual aquatic period. Because phylogeny has thwarted resolution date, evolutionary history NTV, period, their potential coevolution remained unclear. To resolve Triturus, we generated c. 6000 transcriptome-derived marker data set using custom target enrichment probe set, conducted phylogenetic analyses using: (1) concatenation with RAxML,...
Abstract The golden‐striped salamander ( Chioglossa lusitanica ) is an ecologically specialized species, endemic to north‐western Iberia. Patterns of genetic variation were assessed at seven polymorphic enzyme loci and one mitochondrial DNA (mtDNA) marker (cytochrome b in 17 populations across its range. Estimates diversity revealed a high degree subdivision F ST = 0.68), mainly attributable the existence two groups populations. located, respectively, north south Mondego River, indicating...
Abstract Aim To devise a robust phylogenetic hypothesis for midwife toads ( Alytes : Anura: Discoglossidae) and to discuss its implications the reconstruction of biogeographical history group. Location Western Palearctic. Methods Analysis sequences mitochondrial DNA (cytochrome b 16S RNA, 861 bp) 29 characters cranial osteology all species subspecies within . Results Phylogenetic analyses support sister group relationship between dickhilleni A. muletensis , this clade with maurus The...
Abstract: Populations of many amphibian species are declining worldwide, and a few appear to have become extinct. In an attempt evaluate the potential usefulness remote‐sensing techniques as tool for identifying causes these declines, we compiled database that contains descriptions 120 localities, both at which declines been documented no yet known. The number involved, dates degree habitat characteristics, other factors provided each locality. Four relatively undisturbed areas in...
Hybridization between divergent lineages often results in reduced hybrid viability. Here we report findings from a series of independent molecular analyses over several seasons on four life stages F1 hybrids the newts Triturus cristatus and T. marmoratus. These two species form bimodal zone broad overlap France, with making up about 4% adult population. We demonstrate strong asymmetry direction cross, one class (cristatus-mothered) 90% hybrids. By analyzing embryos hatchlings, show that this...