Riccardo Castiglia

Sapienza University of Rome | la sapienza · Department of Biology and Biotechnology "Charles Darwin" BBCD

The Italian endemic voles belonging to the Microtus savii group (de Sélys-Longchamps, 1838) include five controversial taxa, namely M. savii savii, M. s. niethammericus Contoli 2003; M. s. tolfetanus Contoli 2003, M. s. nebrodensis (Minà-Palumbo, 1868) and M. brachycercus (Lehamann, 1961). A previous mtDNA phylogenetic analysis revealed three main...

The black rat Rattus rattus is recognized as one of the world’s most harmful invasive species. It has spread across the globe by passive human transport and the dynamics of colonization have been investigated in several areas of the world. However, data for the Mediterranean basin are still lacking. We investigated the black rat colonization of the...

The twentieth century saw the decline of interest toward museum collections and an increased support to 'experimental' and 'evolutionary' biology, implicitly recognising the opposite nature of the 'old' museum-based taxonomy. With few exceptions, such as those of Florence and Verona, Italian museums after World War II were pushed at the border of s...

A meta-analysis approach was used to test for chromosomal speciation in rodents. Forty-one pairs of sister species, identified in the two most species-rich rodent families (Cricetidae and Muridae), were used as phylogenetically independent data points, each resulting from a speciation event. About 30% of sister species have an identical karyotype....

The house mouse Mus musculus domesticus is characterized by more than 100 metacentric populations, due to the occurrence of Robertsonian (Rb) fusions, together with the standard all-telocentric karyotype (2n = 40). We examined G-banded karyotypes of 18 mice from 10 localities in Sicily and describe 3 new metacentric populations: 'Ragusa Ibla' (IRAG...

The genus Arvicola has a wide palearctic distribution and present two ecological forms – terrestrial and aquatic – characterizing the genus. In Europe two species are present: the most widespread, A. amphibius and A. italicus, endemic to Italy. The aim of the study was to describe the genetic structure and variability in A. italicus and the genetic...

To protect native wildlife, more than one hundred rodent eradications have been attempted in the Mediterranean islands by using anticoagulant rodenticides (ARs). Despite their high efficiency, resistance to ARs has been observed in many countries and it is mostly related to missense mutations (SNPs) in the VKORC1 gene. The presence of resistant ind...

The genetic structure and dispersal dynamics of reptile populations are profoundly influenced by natural processes and human activities. While natural dispersal is shaped by species' characteristics and paleogeographical features, human-mediated translocations have become increasingly prevalent, posing ecological challenges. Mitochondrial genetic m...

SUMMARY The flowerpot blindsnake (Indotyphlops braminus), native to India, nowadays holds the widest global distribution among the snakes, due to passive transport by humans. Previous genetic analysis showed that two geographically separated mtDNA clades occur in India, one confined to the wetter parts ofWestern Ghats (“wet zone” clade), while the...

The dissemination of specimen data in scientific collections is a crucial step in making them available to the scientific community. However, even today, especially in some countries, little or nothing is known about the contents of the naturalistic collections of some museums. This is regrettable, especially in cases where the collections include...

The taxonomy of wall geckos (genus Tarentola) in the Mediterranean basin is very complex and studies have indicated that some species are actually species complexes. We analysed mitochondrial (16S rRNA) and nuclear (MC1R, ACM4) DNA sequences of Tarentola samples from Pantelleria, an island in the Sicilian Channel between Tunisia and Sicily, to est...

ABSTRACT The vertebrate collection of the Museum of Comparative Anatomy “Giovanni Battista Grassi” of Rome The Museum of Comparative Anatomy “Giovanni Battista Grassi” houses ancient anatomical models, a vast collection of microscopes, and the archive of the zoologist G. B. Grassi. However the greater part is constituted by the vertebrate collecti...

Riassunto Il patrimonio culturale marino italiano ha per tradizione e storia un'imponente ricchezza di collezioni museali naturalistiche, con migliaia di reperti ossei e tassidermizzati di vertebrati marini, costruite in oltre due secoli di attività. I reperti museali rappresentano la conoscenza primaria ed unica della biodiversità organismica ed e...

A phylogenetic reassessment of the Sceloporus torquatus species complex is presented using a multilocus approach. Topological conflicts related to a clade belonging to disjunct southern populations of S. madrensis are resolved, confirming the identity of such populations as distinct from the nominal populations of S. madrensis located 175 kilometre...

Understanding patterns and modalities of species’ colonization in insular ecosystems is a major goal of biogeography and may be key to decision makers, in terms of e.g., management and conservation. In this paper, we assess source and patterns of colonization of an opportunistic reptile, Podarcis siculus, on the remote island of Pantelleria (Italy)...

Mice are among the most important pests worldwide due to their severe impact on urban areas, businesses, and animal husbandry, as well as on the risk of zoonoses transmission. It is also widely recognised that human commensal rodents can be extremely harmful to small islands biocenoses where control or eradication of invasive pest species is genera...

The pygmy white-toothed shrew Suncus etruscus is a widespread species whose distribution patterns are unclear. Paleonto-logical data suggested an east to west pattern of dispersion in the Mediterranean basin during the Late Holocene but some doubts are still present especially considering the absence of fossil remains from key areas, such as mainla...

The pigmy white-toothed shrew Suncus etruscus is a widespread species whose distribution patterns are unclear. Paleontological data suggested an east-west pattern of dispersion in the Mediterranean basin during late Holocene but some doubts are still present especially considering the absence of fossil remains from key areas, as mainland Italy. Her...

Abstract: The Tuscan Archipelago is one of the most ancient and ecologically heterogeneous island systems in the Mediterranean. The biodiversity of these islands was strongly shaped by the Pliocene and Pleistocene sea regressions and transgression, resulting in different waves of colonization and isolation of species coming from the mainland. The...

We reply to the comments made by Benvenuti et al. (2022) about our paper on the Italian natural history museums and scientific collections and the need of a centralized hub and repository. While agreeing that digitization is a useful tool to valorize each museum and collection, we still believe that the suggestion of a centralized hub is valid and...

Human commensal rodents can be extremely harmful to small islands biocenoses. Eradication of invasive rodents is often one of the most direct methods to protect island biodiversity and most of them are carried out using anticoagulant rodenticides (ARs). These compounds act by inhibiting the vitamin K 2,3-epoxide reductase (VKORC) complex of the vit...

Il Museo di Anatomia Comparata “Giovanni Battista Grassi” conserva i cimeli e l’archivio del grande zoologo italiano Giovanni Battista Grassi (1854 – 1925) che ne fu direttore dal 1894 sino alla morte. La collezione include antichi modelli anatomici in cartapesta di Jérôme Auzoux (1797-1880) e modelli embriologici in cera di Friedrich Ziegler (1860...

The evolution of complex morphological structures can be characterized by the interplay between different anatomical regions evolving under functional integration in response to shared selective pressures. Using the highly derived humeral morphology of talpid moles as a model, here we test whether functional performance is linked to increased level...

The geographic variability of the dorsal pattern (DP) of the Italian wall lizard, Podarcis siculus, across its native range was studied with the aim of understanding whether the distributions of this phenotypic trait were more shaped by allopatric differentiation rather than adaptive processes. A total of 1298 georeferenced observations scattered a...

The East European vole Microtus mystacinus is the most widespread vole species in Anatolia. It is also frequently seen in watery habitats in a large area of Eurasia. In this paper, an attempt was made to ascertain the level of genetic differentiation between Anatolian (Asian part of Turkey) and Turkish Thracian (European part of Turkey) populations...

The geographic variability of the dorsal pattern (DP) of the Italian wall lizard, Podarcis siculus, across its native range was studied with the aim to understand whether the distributions of this phenotypic trait were more shaped by allopatric differentiation rather than adaptive processes. A total of 1298 georeferenced observations scattered acro...

In Italy, differently from other countries, a national museum of natural history is not present. This absence is due, among the other reasons, to its historical political fragmentation up to 1870, which led to the establishment of medium-sized museums, mostly managed by local administrations or universities. Moreover, a change of paradigm in biolog...

Biogeography and the occurrence of small mammals are usually hard to investigate due to the small size and secretive habits of these mammals. Available data are particularly insufficient on minor islands and at national borders, where research efforts are usually scarce. Here we briefly updated the knowledge on murid rodents on two remote Italian s...

Venom spitting is a defence mechanism based on airborne venom delivery used by a number of different African and Asian elapid snake species ('spitting cobras'; Naja spp. and Hemachatus spp.). Adaptations underpinning venom spitting have been studied extensively at both behavioural and morphological level in cobras, but the role of the physical prop...

Based on genetic and morphological evidence, Senczuk et al. (2019) formally raised the Podarcis populations from the Western Pontine Islands, previously classified as several subspecies of P. siculus, to species rank, i.e. Podarcis latastei (Bedriaga, 1879). This taxonomic change was not accepted in the checklist of the European herpetofauna by Spe...

Islands are compelling natural laboratories for studying evolutionary processes. Nevertheless, the existence of general rules underlying morphological evolution on islands remains an unresolved issue. In this study, we investigated the insular phenotypic variability of the Italian wall lizard (Podarcis siculus) on a large geographical scale, in ord...

Genetic and phenotypic differentiation in allopatric conditions can be explained either by neutral phenomena or adaptative processes driven by selection. In reptiles, coloration can affect aspects directly related to their survival, representing a classical character under selection. In this context, secondary contact areas are natural laboratory t...

Islands are compelling natural laboratories for studying evolutionary processes. Nevertheless, the existence of general rules underlying morphological evolution on islands remains an unresolved issue. In this study, we investigated the insular phenotypic variability of the Italian wall lizard (Podarcis siculus) on a large geographical scale, in ord...

A combined approach based on karyology and DNA taxonomy allowed us to characterize the taxonomic peculiarities in 10 Mesoamerican lizard species, belonging to six genera and five families, inhabiting two Biosphere Reserve in Chiapas, Mexico: La Sepultura Biosphere Reserve, and Montes Azules Biosphere. The karyotypes of four species, Phyllodactylus...

A combined approach based on karyology and DNA taxonomy allowed us to characterize the taxonomic peculiarities in 10 Mesoamerican lizard species, belonging to six genera and five families, inhabiting two Biosphere Reserve in Chiapas, Mexico: La Sepultura Biosphere Reserve, and Montes Azules Biosphere. The karyotypes of four species, Phyllodactylus...

The occurrence and the history of Neotropical mammal specimens in the collections of naturalistic museums in Rome, Italy, and their scientific utilization is here reviewed. These specimens belong to several scientific expeditions made after the discovery of the new Continent. The oldest specimens date back to the famous Museum of Athanasius Kircher...

A combined approach based on karyology and DNA taxonomy allowed us to characterize the taxonomic peculiarities in 10 Mesoamerican lizard species, belonging to six genera and five families, inhabiting two Biosphere Reserve in Chiapas, Mexico: La Sepultura Biosphere Reserve, and Montes Azules Biosphere. The karyotypes of four species, Phyllodactylus...

Groups of proximate continental islands may conceal more tangled phylogeographic patterns than oceanic archipelagos as a consequence of repeated sea level changes, which allow populations to experience gene flow during periods of low sea level stands and isolation by vicariant mechanisms during periods of high sea level stands. Here, we describe fo...

Chromosomal evolution is widely considered an important driver of speciation because it can promote the establishment of reproductive barriers. Karyotypic reorganization is also expected to affect the mean phenotype, as well as its development and patterns of phenotypic integration, through processes such as variation in genetic linkage between QTL...

The Talpidae family has a highly stable karyotype. Most of the chromosome studies in this mammal group, however, employed classical cytogenetic techniques. Molecular cytogenetic analyses are still scarce and, for example, no repeated DNA sequences have been described to date. In this work, we used sequence analysis, chromosomal mapping of a LINE1 r...

Chromosomal evolution is widely considered to be an important driver of speciation, as karyotypic reorganization can bring about the establishment of reproductive barriers between incipient species. One textbook example for genetic mechanisms of speciation are large-scale chromosomal rearrangements such as Robertsonian (Rb) fusions, a common class...

Necromys is a genus of sigmodontine rodent widely distributed throughout South America, from central Argentina to Trinidad and Tobago, and includes eight living species. In Brazil, two species are currently known: N. lasiurus, widely distributed, and N. lenguarum, known only from a sole locality in Mato Grosso state, core area of Cerrado domain, ba...

Abstract—To clarify genetic differences between subspecies of the house mouse Mus musculus, their distribution, and hybridization, we first conducted a comparative analysis of variability of nucleotide sequences of fragments of the nuclear gene Brca1, exon 11 (2331 bp), and mitochondrial gene Cox1 (1260 bp) in 40 house mice from West and East Europ...

The presence of the brown rat Rattus norvegicus Berkenhout, 1769 in the Aegean Island of Symi is reported here for the first time. Molecular analysis of a specimen collected in the island confirms this finding

Checklists represent a basic tool for conservation and management of regional faunas. However, our knowledge on species composition in a territory changes over time due to species movements across borders, extinctions, introductions, as well as to new taxonomic evidence. We aimed to provide the most updated data on native and non-native species of...

To clarify genetic differences between subspecies of the house mouse Mus musculus, their distribution , and hybridization, we first conducted a comparative analysis of variability of nucleotide sequences of fragments of the nuclear gene Brca1, exon 11 (2331 bp), and mitochondrial gene Cox1 (1260 bp) in 40 house mice from West and East Europe, Trans...

Sea level oscillations occurred during the Pleistocene have strongly affected islands’ physiography by changing area, elevation, and even the number of islands rising above the sea level. Such changes had direct consequences on island genetic diversity by promoting genetic admixture during glacial marine regressions while fragmentation or even exti...

Natural populations of the house mouse Mus musculus domesticus show great diversity in chromosomal number due to the presence of chromosomal rearrangements, mainly Robertsonian translocations. Breeding between two populations with different chromosomal configurations generates subfertile or sterile hybrid individuals due to impaired meiotic develop...

African Grass Rats of the genus Arvicanthis Lesson, 1842, are one of the most important groups of rodents in sub‐Saharan Africa. They are abundant in a variety of open habitats, they are major agricultural pests, and they became a popular model in physiological research because of their diurnal activity. Despite this importance, information about t...

It is now well established that Southern European peninsulas have been major glacial refugia for temperate species during Pleistocene climatic oscillations. However, substantial environmental changes occurred also within these peninsulas throughout the Pleistocene, raising questions about the role and interplay of various microevolutionary processe...

We report a new locality for Monodelphis handleyi, a rare short-tailed opossum species, previously known only from its type locality, in Loreto, northeastern Peru. One adult male was collected using pitfall trap disposed in Humaitá Amazonian savanna of southern Amazonas state, Brazil. Voucher specimen had their identification confirmed by molecular...

During historical times many local grey wolf (Canis lupus) populations underwent a substantial reduction of their sizes or became extinct. Among these, the wolf population once living in Sicily, the biggest island of the Mediterranean Sea, was completely eradicated by human persecution in the early decades of the XX century. In order to understand...

Aim Emergence of coastal lowlands during Pleistocene ice ages might have provided conditions for glacial expansions (demographic and spatial), rather than contraction, of coastal populations of temperate species. Here, we tested these predictions in the insular endemic Sicilian wall lizard Podarcis wagleriana. Location Sicily and neighbouring isla...

In recent years, great attention has been paid to many Podarcis species for which the observed intra-specific variability often revealed species complexes still characterized by an unresolved relationship. When compared to other species, P. siculus underwent fewer revisions and the number of species hidden within this taxon may have been, therefore...

In this paper, some data about the presence of Apodemus sylvaticus (Linnaeus, 1758) (Mammalia Rodentia Muridae) in rocky environments of the National Park of the Sibillini Mountains are provided. Considering the available data on the distribution of A. sylvaticus in Italy, this appears to be an unusual finding, which can be explained considering th...

It is now well established that Southern European peninsulas have been major glacial refugia for temperate species during Pleistocene climatic oscillations. However, substantial environmental changes occurred also within these peninsulas throughout the Pleistocene, rising questions about the role and interplay of various of micro-evolutionary proce...

New records for Monodelphis glirina, a short-tailed opossum distributed throughout the Amazon region, from Humaitá, Amazonas state, and Confresa, Mato Grosso state, prompted new insights into the geographic distribution and genetic diversity of this species. One of the records extends the species range circa 350 km beyond the previous southeastern...

During historical times many local grey wolf (Canis lupus) populations underwent a substantial reduction of their sizes or became extinct. Among these, the wolf population once living in Sicily, the biggest island of the Mediterranean Sea, was completely eradicated by human persecution in the early decades of the XX century. In order to understand...

Groups of proximate continental islands may conceal more tangled phylogeographic patterns than oceanic archipelagos as a consequence of repeated sea level changes, which allow populations to experience gene flow during periods of low sea level stands and isolation by vicariant mechanisms during periods of high sea level stands. Here, we describe fo...

Taking advantage of a dense sampling scheme especially in the contact zones of the two clades of Hierophis viridiflavus detected in Italy, we aim to add information on their genetic distribution and to assess the presence of gene flow upon secondary contact.

During the first decades of the last century, an enigmatic extinction was documented to have occurred on the small Mediterranean island of Santo Stefano in the Pontine Archipelago. Although islands are fascinating systems for studying microevolutionary processes, they may nevertheless host unstable communities that make their populations particular...

In the Norway rat, Rattus norvegicus, anticoagulant rodenticide resistance is mainly associated with mutations in the third exon of the Vitamin K epoxide reductase complex subunit 1 (VKORC1). Identification of the resistant wild populations is very important to improve the control practices and to limit the damages due to inadequate use of the anti...

Islands are fascinating natural laboratory where to study speciation and evolution. Here, we investigated the variation of the head morphology of 374 individuals of Podarcis siculus from mainland Italy, Sicily and the Pontine Archipelago, using the geometric morphometric approach. We also included in the analysis samples of an extinct island popula...

During the first decades of the last century, an enigmatic extinction was documented to have occurred on the small Mediterranean island of Santo Stefano in the Pontine Archipelago. Although islands are fascinating systems for studying microevolutionary processes, they may nevertheless host unstable communities that make their populations particular...