A5029995644- Genetic diversity and population structure
- Animal Ecology and Behavior Studies
- Chromosomal and Genetic Variations
- Amphibian and Reptile Biology
- Genetic Mapping and Diversity in Plants and Animals
- Evolution and Paleontology Studies
- Species Distribution and Climate Change
- Bat Biology and Ecology Studies
- Yersinia bacterium, plague, ectoparasites research
- Wildlife Ecology and Conservation
- Animal Behavior and Reproduction
- Morphological variations and asymmetry
- Evolution and Genetic Dynamics
- Plant and animal studies
- Genomics and Phylogenetic Studies
- Lepidoptera: Biology and Taxonomy
- Animal and Plant Science Education
- Molecular Biology Techniques and Applications
- Genetic and phenotypic traits in livestock
- Diverse academic and cultural studies
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- CRISPR and Genetic Engineering
- Medieval Architecture and Archaeology
- Ecology and Vegetation Dynamics Studies
- Chronic Myeloid Leukemia Treatments
Sapienza University of Rome
2016-2025
Istituto di Scienze Marine del Consiglio Nazionale delle Ricerche
2024
National Research Council
2024
Museu Paraense Emílio Goeldi
2024
Fundação Oswaldo Cruz
2024
Weatherford College
2023
Research Institute on Sustainable Economic Growth
2023
Società Italiana di Fisica
2020
Charles Darwin University
2005-2017
European University of Rome
2015
Therian mammals have an extremely conserved XX/XY sex determination system. A limited number of mammal species have, however, evolved to escape convention and present aberrant chromosome complements. In this study, we identified a new case atypical in the African pygmy mouse Mus minutoides , close evolutionary relative house mouse. The is characterized by very high proportion XY females (74%, n = 27) from geographically widespread Southern Eastern populations. Sequencing mobility group...
Abstract A meta‐analysis approach was used to test for chromosomal speciation in rodents. Forty‐one pairs of sister species, identified the two most species‐rich rodent families ( C ricetidae and M uridae), were as phylogenetically independent data points, each resulting from a event. About 30% species have an identical karyotype. There significant difference number differences between sympatric allopatric compatible with direct role rearrangements speciation.
A selective sweep is the result of strong positive selection driving newly occurring or standing genetic variants to fixation, and can dramatically alter pattern distribution allelic diversity in a population. Population-level sequencing data have enabled discoveries sweeps associated with genes involved recent adaptations many species. In contrast, much debate but little evidence addresses whether “selfish” are capable fixation—thereby leaving signatures identical classical sweeps—despite...
The current distribution of genetic diversity is the result a vast array microevolutionary processes, including short-term demographic and ecological mechanisms long-term allopatric isolation in response to Quaternary climatic fluctuations. We investigated past processes that drove population differentiation spatial Italian wall lizard Podarcis siculus by means sequences mitochondrial cytb (n = 277 from 115 localities) nuclear mc1r β-fibint7genes 262 n 91, respectively) all its range....
New records for Monodelphis glirina, a short-tailed opossum distributed throughout the Amazon region, from Humaitá, Amazonas state, and Confresa, Mato Grosso prompted new insights into geographic distribution genetic diversity of this species. One extends species range circa 350 km beyond previous southeastern limit. Voucher specimens had their identification confirmed by morphological comparison with holotype corroborated molecular data (mitochondrial gene Cytochrome b). Our analyses...
African Grass Rats of the genus Arvicanthis Lesson, 1842, are one most important groups rodents in sub-Saharan Africa. They abundant a variety open habitats, they major agricultural pests, and became popular model physiological research because their diurnal activity. Despite this importance, information about taxonomy distribution is unsatisfactory, especially eastern In study, we collected comprehensive multilocus DNA dataset to date across geographic taxonomic range (229 genotyped...
The West European house mouse, Mus musculus domesticus, is a particularly suitable model to investigate the role of chromosomal rearrangements in reproductive isolation. In fact, it exhibits broad range polymorphism due Robertsonian (Rb) fusions leading various types contact zones between different races. present study, we analyzed parapatric central Italy Cittaducale race (CD: 2n= 22) and surrounding populations with standard karyotype (2n= 40) understand if Rb play causative speciation....
In Italy, differently from other countries, a national museum of natural history is not present. This absence due, among reasons, to its historical political fragmentation up 1870, which led the establishment medium-sized museums, mostly managed by local administrations or universities. Moreover, change paradigm in biological research, at beginning 20th century, contributed privilege experimental studies universities and facilitated dismissal descriptive exploratory biology, formed basis...
The mesic four-striped grass rat Rhabdomys dilectus De Winton, 1897 is distributed in regions of southern and eastern Africa. We carried out a molecular chromosomal study the northernmost populations species to provide insight into subspecific boundaries identified within describe its genetic structure Eastern Maximum likelihood, maximum parsimony neighbour-joining methods were used construct phylogenetic relationships among all haplotypes belonging large part range. Times divergences...
Thirty years after its identification, the model of chromosomal speciation in <i>Mus musculus domesticus</i> is reevaluated using methods population biology, molecular cytogenetics and functional genomics. Three main points are considered: (1) structural predisposition <i>M. m. chromosomes to Robertsonian fusion; (2) impediment heterozygosity gene flow between populations mice with karyotypes rearranged by fusion them standard all-acrocentric 40-chromosome karyotype; (3)...
A chromosome study of unstriped grass rats the genus <i>Arvicanthis</i> (Rodentia, Murinae) in western and central Africa is presented. The observations extend data available to 242 specimens from 59 localities. All individuals karyotyped belong four karyotypic forms, or cytotypes, earlier described as ANI-1, ANI-2, ANI-3, ANI-4 are presumed correspond distinct species. In order provide diagnostic characters for these one African species, we standardized chromosomal developed a...
Abstract The house mouse, Mus musculus domesticus , exhibits a high level of chromosomal polymorphism because the occurrence and fast fixation Robertsonian fusions between telocentric chromosomes. For this reason, it has been considered classical speciation model to analyse role changes in reproductive isolation. In study, we analysed parapatric contact area two metacentric races central Italy, Cittaducale race (CD: 2 n = 22) Ancarano (ACR: 24), estimate gene flow at boundary. Hybrids these...
The Italian endemic voles belonging to the Microtus savii group (de Sélys‐Longchamps, 1838) include five controversial taxa, namely M. , s. niethammericus Contoli ; tolfetanus nebrodensis ( Minà‐Palumbo, 1868) and brachycercus (Lehamann, 1961). A previous mt DNA phylogenetic analysis revealed three main lineages that do not correspond recognized taxa. Here, we perform a comprehensive univariate multivariate of craniodental measurements in 151 specimens from 54 geographic samples phylogroups....