Ettore Randi

Ettore Randi

PhD

About

531
Publications
169,446
Reads
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13,253
Citations
Additional affiliations
October 1982 - present
Institute for Environmental Protection and Research (ISPRA)
Position
  • Research Director

Publications

Publications (531)
Article
Full-text available
Intra- and inter-specific gene flow are natural evolutionary processes. However, human-induced hybridization is a global conservation concern across taxa, and the development of discriminant genetic markers to differentiate among gene flow processes is essential. Wolves (Canis lupus) are affected by hybridization, particularly in southern Europe, w...
Article
Full-text available
Simple Summary: This study evaluates the use of acoustic devices as a method to monitor wolves by analyzing different variables extracted from wolf howls. By analyzing the wolf howls, we fo-cused on identifying individual wolves, subspecies. We analyzed 170 howls from 16 individuals from the three subspecies: Arctic wolves (Canis lupus arctos), Eur...
Article
Carnivores tend to exhibit a lack of (or less pronounced) genetic structure at continental scales in both a geographic and temporal sense and this can confound the identification of post‐glacial colonization patterns in this group. In this study we used genome‐wide data (using Genotyping‐by‐Sequencing (GBS)) to reconstruct the phylogeographic histo...
Article
Full-text available
Background Since their domestication 10,500 years ago, goat populations with distinctive genetic backgrounds have adapted to a broad variety of environments and breeding conditions. The VarGoats project is an international 1000-genome resequencing program designed to understand the consequences of domestication and breeding on the genetic diversity...
Article
The Sardinian dhole (Cynotherium sardous) was an iconic and unique canid species that was endemic to Sardinia and Corsica until it became extinct at the end of the Late Pleistocene. Given its peculiar dental morphology, small body size, and high level of endemism, several extant canids have been proposed as possible relatives of the Sardinian dhole...
Article
Full-text available
Background The low cost and rapidity of microsatellite analysis have led to the development of several markers for many species. Because in non-invasive genetics it is recommended to genotype individuals using few loci, generally a subset of markers is selected. The choice of different marker panels by different research groups studying the same po...
Article
Full-text available
Background Understanding the processes that lead to hybridization of wolves and dogs is of scientific and management importance, particularly over large geographical scales, as wolves can disperse great distances. However, a method to efficiently detect hybrids in routine wolf monitoring is lacking. Microsatellites offer only limited resolution due...
Article
Full-text available
Local adaptation of animals to the environment can abruptly become a burden when faced with rapid climatic changes such as those foreseen for the Italian peninsula over the next 70 years. Our study investigates the genetic structure of the Italian goat populations and links it with the environment and how genetics might evolve over the next 50 year...
Article
Full-text available
Marmora’s Warbler ( Curruca sarda ) and Balearic Warbler ( C. balearica ) are allopatric sibling species and were recently split mostly based on morphological and ethological characteristics. Here we provide the first phylogenetic and phylogeographic analyses of this species complex to support the taxonomic status of C. sarda and C. balearica in li...
Preprint
Full-text available
The Sardinian dhole (Cynotherium sardous) was an iconic and unique canid species of canid that was endemic of Sardinia and Corsica until it became extinct at the end of the Late Pleistocene. Given its peculiar dental morphology, small body size and high level of endemism, several canids have been proposed as possible ancestors of the Sardinian dhol...
Preprint
Full-text available
Background Understanding the processes that lead to hybridization of wolves and dogs is of scientific and management importance, particularly over large geographical scales, as wolves can disperse great distances. However, a method to efficiently detect hybrids in routine wolf monitoring is lacking. Microsatellites offer only limited resolution due...
Article
We revise the taxonomy of the Sylvia cantillans complex, a group of phenotypically distinct warblers with mainly parapatric distributions around a large part of the Mediterranean basin. We redefine the species limits using a combination of mitochondrial and nuclear markers and we objectively link available names to the genetically defined lineages...
Article
Full-text available
The grey wolf (Canis lupus) is one of the most widely distributed mammals in which a variety of distinct populations have been described. However, given their currently fragmented distribution and recent history of human-induced population decline, little is known about the events that led to their differentiation. Based on the analysis of whole ca...
Article
Full-text available
Madagascar does not have native wild felid species; however, distinct populations of free-ranging “forest cats” of unknown species are known throughout the island, including at Ankarafantsika National Park, Bezà Mahafaly Special Reserve, Makira Natural Park and the Masoala peninsula. Malagasy “forest cats” are commonly considered invasive lemur pre...
Preprint
Full-text available
Carnivores tend to exhibit a lack of (or less pronounced) genetic structure at continental scales in both a geographic and temporal sense using various mitochondrial DNA markers on modern and/or ancient specimens. This tends to confound the identification of refugial areas and post-glacial colonization patterns in this group. In this study we used...
Article
Full-text available
The genomic era has led to an unprecedented increase in the availability of genome‐wide data for a broad range of taxa. Wildlife management strives to make use of these vast resources to enable refined genetic assessments that enhance biodiversity conservation. However, as new genomic platforms emerge, problems remain in adapting the usually comple...
Article
Full-text available
The survival of indigenous European wildcat (Felis silvestris silvestris) populations can be locally threatened by introgressive hybridization with free-ranging domestic cats. Identifying pure wildcats and investigating the ancestry of admixed individuals becomes thus a conservation priority. We analyzed 63k cat Single Nucleotide Polymorphisms (SNP...
Article
Full-text available
Using next-generation sequencing, we obtained for the first time a complete mitochondrial DNA genome from a museum specimen of the extinct wolf (Canis lupus) population of the island of Sicily (Italy). Phylogenetic analyses indicated that this genome, which was aligned with a number of historical and extant wolf and dog mitogenomes sampled worldwid...
Article
Full-text available
Anthropogenic hybridization is widely perceived as a threat to the conservation of biodiversity. Nevertheless, to date, relevant policy and management interventions are unresolved and highly convoluted. While this is due to the inherent complexity of the issue, we hereby hypothesize that a lack of agreement concerning management goals and approache...
Preprint
Full-text available
Using next generation sequencing, we obtained for the first time a complete mitochondrial DNA genome from a museum specimen of the extinct wolf (Canis lupus) population of the island of Sicily (Italy). Phylogenetic analyses showed that this genome, which was aligned with a number of historical and extant complete wolf and dog mtDNAs sampled worldwi...
Article
Full-text available
Next Generation Sequencing (NGS) and related technologies have revolutionized the field of conservation and population genetics, providing novel tools and the capacity to discover thousands of new Single Nucleotide Polymorphisms (SNPs) for the analysis of population parameters. However, gathering NGS data for organisms with very large genomes, such...
Poster
Full-text available
Brown bear is a flagship species whose conservation needs international efforts. Today, in Europe brown bears live in 10 fragmented populations due to habitat loss and historical human persecution. A reintroduced brown bear population in Central Italian Alps presently numbers 52-63 individuals. This population risks loss of genetic variability due...
Article
Full-text available
Background Genomic methods can provide extraordinary tools to explore the genetic background of wild species and domestic breeds, optimize breeding practices, monitor and limit the spread of recessive diseases, and discourage illegal crossings. In this study we analysed a panel of 170k Single Nucleotide Polymorphisms with a combination of multivari...
Article
Full-text available
Wolf-dog hybridization is considered as one of the main threats for wolf conservation since the admixture and introgression of domestic genes may disrupt local adaptations and threaten the long term survival of wild wolf populations. We investigated the occurrence of wolf-dog hybridization in Croatia by analyzing a panel of 12 autosomal microsatell...
Article
Conservation genetic disciplines have greatly progressed during the last thirty years, mainly thanks to the continuous development of molecular biological knowledge and the implementation of molecular tools used to describe diversity at the DNA level. The ongoing transition from Conservation genetics to Conservation genomics is showing to increase...
Article
Full-text available
Pigmentation is often used to understand how natural selection affects genetic variation in wild populations since it can have a simple genetic basis, and can affect a variety of fitness-related traits (e.g., camouflage, thermoregulation, and sexual display). In gray wolves, the K locus, a β-defensin gene, causes black coat color via a dominantly i...
Article
Full-text available
The dispersal process is crucial in determining the fate of populations over time, but habitat fragmentation limits or prevents it. Landscape genetic is an effective tool to assess the degree to which dispersal still occurs in fragmented landscapes. The purpose of this study was to investigate the landscape determinants of genetic differentiation i...
Article
Full-text available
Sexually Selected Infanticide (SSI) is thought of as a male reproductive strategy in social mammalian species, because females who lose cubs may quickly re-enter oestrus. SSI has rarely been documented in non-social mammals and, in brown bears, SSI has been studied mainly in an eco-ethological perspective. The authors examined the first genetically...
Article
Full-text available
Hybridisation between a domesticated species and its wild ancestor is an important conservation problem, especially if it results in the introgression of domestic gene variants into wild species. Nevertheless, the legal status of hybrids remains unregulated, partially because of the limited understanding of the hybridisation process and its consequ...
Article
Full-text available
The grey wolf (Canis lupus) is an iconic large carnivore that has increasingly been recognized as an apex predator with intrinsic value and a keystone species. However, wolves have also long represented a primary source of human–carnivore conflict, which has led to long-term persecution of wolves, resulting in a significant decrease in their number...
Article
Full-text available
For most rare and elusive species, estimating age-specific survival is a challenging task, although it is an important requirement to understand the drivers of population dynamics, and to inform conservation actions. Apennine brown bears Ursus arctos marsicanus are a small, isolated population under a severe risk of extinction, for which the main d...
Article
Full-text available
Hybridization is a natural or anthropogenic process that can deeply affect the genetic make-up of populations, possibly decreasing individual fitness but sometimes favouring local adaptations. The population of Italian wolves (Canis lupus), after protracted demographic declines and isolation, is currently expanding in anthropic areas, with document...
Article
Full-text available
The survival of isolated small populations is threatened by both demographic and genetic factors. Large carnivores declined for centuries in most of Europe due to habitat changes, overhunting of their natural prey and direct persecution. However, the current rewilding trends are driving many carnivore populations to expand again, possibly reverting...
Data
Distribution of the concatenated multifragment mtDNA haplotypes in wolves sampled all over the world. Country acronyms: IB = Iberian Peninsula; IT = Italy; HR = Croatia; SL = Slovenia; GR = Greece; BG = Bulgaria; PL = Poland; ES = Estonia; LA = Latvia; FI = Finland; UK = Ukraine; SW = Sweden; IR = Iran; OM = Oman; SA = Saudi Arabia; IS = Israel; IN...
Data
ABC demographic scenarios and locations of the selected wolf populations. (PDF)
Data
Delta K values [29] obtained in Structure analyses of dog and wolf samples assuming K values from 1 to 15. (PDF)
Data
(A) NJ and (B) consensus ML mtDNA phylogenetic trees. Details of clade A are highlighted in the top -left figures. (PDF)
Data
Phylogenetic tree of concatenated multi-fragment (control-region, ATP6, COIII and ND4) dog and wolf mtDNA haplotypes generated using a Bayesian procedure implemented in MrBayes [41]. A homologous concatenated sequence of Canis latrans (DQ480509) is used as an outgroup. Every node shows its posterior probability. Clade A, that includes the Italian w...
Data
Model checking. Pre-evaluation of scenario-prior combinations; direct and logistic regression comparison methods of the estimated posterior probabilities among scenarios and fit of the selected best scenarios (Sc2 and Sc4) with the observed data. PCA I and II plotted using 10.000 data points. (PDF)
Data
List of the wolf and dog samples analyzed in this study indicating: The country of origin, taxon, gender, mtDNA haplotypes at ATP6, COIII, ND4, CR and the concatenated multifragment sequences (MF). The individual Bayesian clustering assignments were computed using Structure with K = 3, assuming that genotypes could have ancestry in a dog cluster (q...
Data
Haplotype composition. Detailed composition of the concatenated multifragment haplotypes. (PDF)
Data
Results of Bayesian clustering analyses of dog and wolf samples obtained by Structure assuming K values from 1 to 15. Dog and wolf population samples are shown in the same sequence as in Fig 2: dogs (1), Italian wolves (2), Iberian wolves (3), Dinaric wolves (4), Balkanic wolves (5), Carpathian wolves (6), Baltic wolves (7). (PDF)
Data
Prior (red) and posterior (green) density distributions of posterior probability for the selected ABC parameters from scenarios 2 and 4. (PDF)
Data
Description of the genotyped autosomal (CFA) microsatellites (STR). (PDF)
Data
List of mtDNA sequences downloaded from the GenBank. For every sample is shown: the accession number, country of origin of the sequenced sample (if available), taxon, dog breed (if available), and clade of memberships (BEAST analysis), and haplotypes at different genic regions. (PDF)
Data
DIYABC prior distributions for demographic parameters and mutation rates. (PDF)
Data
Model checking results for the best fitting scenario (SC2) based on 1,000 simulated datasets. (PDF)
Data
(A) Description of laboratory methods with details on primers and PCR profiles for all the genotyped markers and (B) Details on MrBayes and BEAST models. (PDF)
Article
Full-text available
In the past century the Italian wolf has been repeatedly indicated as a distinct subspecies, Canis lupus italicus, due to its unique morphology and its distinctive mtDNA control region (CR) monomorphism. However, recent studies on wolf x dog hybridization in Italy documented the presence of a second mtDNA CR haplotype (W16), previously found only i...
Article
Full-text available
The raccoon dog (Nyctereutes procyonoides) has a wide distribution in Europe and is a prominent example of a highly adaptable alien species. It has been recorded sporadically in Denmark since 1980 but observations since 2008 suggested that the species had established a free-ranging, self-sustaining population. To elucidate the origin and genetic pa...