Valerio Sbordoni

Valerio Sbordoni
University of Rome Tor Vergata | UNIROMA2 · Dipartimento di Biologia

Professor

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331
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Publications

Publications (331)
Article
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Volunteers’ contribution to research is growing, especially since the beginning of the 21st century. Given the constant increase of Citizen Science initiatives, recruiting strategies have to be planned properly. Retention is pivotal as well, especially when time is invested in volunteers’ training. However, practically no follow-up data are availab...
Article
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Keywords: Biodiversity data, butterflies, citizen science, natural science forum, social networks. ABSTRACT/SUMMARY Forums and social networks store a big deal of data on flora and fauna, collected especially by amateurs. To what extent are these data useful to contribute to biodiversity data systems? In this paper, we addressed the question abou...
Article
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A new anophthalmic carabid beetle belonging to the genus Duvalius Delarouzée, 1859, recently collected in a deep cave in the Southern Aurunci Mountains, Lazio, is described. The new species appears to be the most troglomorphic among all the thus far known Italian Duvalius.
Article
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Understanding and counteracting biodiversity losses requires quantitative knowledge on species distribution and abundance across space and time, as well as integrated and interoperable information on climate conditions and climatic changes. In this paper we developed a new biodiversity-climate database for Italy, ClimCKmap, based on the critical an...
Article
Aim: To identify the effect of multiple, temporally close, forcing events (i.e. climate-driven habitat fragmentations/homogenizations) in shaping current patterns of biodiversity in alpine areas. Given their spatial configuration, alpine areas have been traditionally seen as islands surrounded by an "ocean" of unsuitable lands. A quantitative asses...
Poster
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Euphydryas aurinia (Rottemburg, 1775) is one of the most seriously threatened European butterflies, suffering a severe decline in most countries. Although there are several studies on its ecology and biology, the factors affecting its mortality and the role of natural enemies on its population dynamics are yet not fully known. Larval survival play...
Article
Full-text available
Courtship in butterflies can vary among species, from simple to elaborate displays, which are thought to promote conspecific mating and drive a female, at first unreceptive, to eventually mate. In this paper, we studied the courtship behaviour of a population of E. aurinia provincialis (Nymphalidae) of the Italian region Latium, finding clear diffe...
Chapter
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In this study, we test the proficiency of DNA barcoding in taxon delimitation of a sample of Delias species. With more than 250 species, Delias is the most speciose and diverse genus of butterflies. Most Delias species show striking colours on the ventral wing surfaces, likely exhibited as aposematic signals to predators. The systematic arrangement...
Chapter
Full-text available
In this study, we test the proficiency of DNA barcoding in taxon delimitation of a sample of Delias species. With more than 250 species, Delias is the most speciose and diverse genus of butterflies. Most Delias species show striking colours on the ventral wing surfaces, likely exhibited as aposematic signals topredators. The systematic arrangement...
Article
Full-text available
Pheromones are known to play an important role in butterfly courtship and may influence both individual reproductive success and reproductive isolation between species. Recent studies have focused on courtship in Hipparchia butterflies (Nymphalidae: Satyrinae) emphasizing morphological and behavioural traits, as well as genetic differences. Behavio...
Article
Full-text available
Pheromones are known to play an important role in butterfly courtship and may influence both individual reproductive success and reproductive isolation between species. Recent studies have focused on courtship in Hipparchia butterflies (Nymphalidae: Satyrinae) emphasizing morphological and behavioural traits, as well as genetic differences. Behavio...
Data
PCA displaying relative positions of males and females H. fagi pattern of VOCs to different conditions (IN, inside laboratory; OUT, environmental temperature; SUN, after basking; perturbed condition by provoking the flight of butterfly; not perturbed = motionless). Females were measured only when perturbed, all the other measurements were carried o...
Data
Sample size of Hipparchia fagi for each condition in the pilot scheme. (DOCX)
Data
PCA displaying relative positions of males and females H. fagi pattern of VOCs to different conditions (IN, inside laboratory; OUT, environmental temperature; SUN, after basking; perturbed condition by provoking the flight of butterfly; not perturbed = motionless). It is the same plot in S1 Fig but the sensor responses are differently labeled for e...
Data
Box plot of the distribution of each sensor signals of H. fagi and H. hermione males. P-values from the Kruskal-Wallis test are shown. (EPS)
Data
Box plot of the distribution of each sensor signals of H. fagi and H. hermione females. P-values from the Kruskal-Wallis test are shown. (EPS)
Data
Screenshot pc of libra nose software during a measurement session. The response of the i-th sensor (Δ fi) to the i-th compound at concentration c (cj) is given by: Δfi* ꞊ Δ fi / ∑j Δ fi. (TIF)
Data
2007 measurement session: Pilot scheme. (DOCX)
Data
Box plot of the distribution of each sensor signals of H. fagi females and males. P-values from the Kruskal-Wallis test are shown. (EPS)
Data
Box plot of the distribution of each sensor signals of H. hermione females and males. P-values from the Kruskal-Wallis test are shown. (EPS)
Article
The Italian biodiversity is among the richest in Europe. In particular, the Italian butterfly fauna includes almost 300 native species, and within the Euro-Mediterranean area is second in species richness only to Turkey. Italy, however, has suffered from the lack of suitable instruments to evaluate the extinction risk of individual butterfly specie...
Article
Full-text available
The genus Bathysciola is widely distributed in the northern Mediterranean region, although its range extends east to the Caucasus and Iran. More than 130 species belonging to this genus are actually known in the whole geographic distribution area and 45 species are distributed in continental and insular Italy. The species belonging to the Bathyscio...
Poster
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CSMON-LIFE (Citizen Science MONitoring) aims at involving citizens in monitoring Italian biodiversity by a citizen science approach. Novel IT tools for mobile devices have been developed in the framework of the project, providing citizens with a platform for collecting and sharing geo-referenced data of target species. CSMON-LIFE also offered anoth...
Article
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DNA Barcodes of the animal species occurring in Italy under the European “Habitats Directive” (92/43/EEC): a reference library for the Italian National Biodiversity Network. DONATELLA CESARONI, STEFANO DE FELICI, GIORGIO RICCARDUCCI, MARCO CIAMBOTTA, ALESSANDRA VENTURA, ELEONORA BIANCHI, VALERIO SBORDONI Keywords: BioCASE, DNA barcoding, National...
Article
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In this paper, we studied the genetic variability in Weddell seal from colonies in Terra Nova Bay and Wood Bay, both sites located in the Ross Sea area, Antarctica. Two mitochondrial genes and one nuclear gene, with different mutation rates, were sequenced to investigate the haplotype diversity of the colonies and to test for a possible recent expa...
Article
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In this study, we investigated the molecular phylogenetic divergence and historical biogeography of cave crickets belonging to the genus Troglophilus (Orthoptera, Rhaphidophoridae) from caves in eastern Mediterranean and Anatolia regions. Three mitochondrial DNA genes (COI, 12S rDNA, and 16S rDNA) and two nuclear ones (18S rDNA and 28S rDNA) were a...
Article
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Pinzari M., Pinzari M., Sbordoni V. – Notes on life-history of Erycia furibunda (Diptera Tachinidae), a parasitoid of Euphydryas aurinia provincialis (Lepidoptera Nymphalidae) In this paper we present new data on the larval-pupal parasitoid Erycia furibunda found in association with coexisting populations of E. aurinia provincialis in Central Italy...
Article
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Aim: Niche stability areas (NSAs) are portions of the species range where climate conditions remain suitable through time. They represent the core of species ranges. Their distribution and extent, coupled with dispersal and colonization, shape the realized range of species. In this study, we quantified the roles of survival within NSAs and post-gla...
Article
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Biogeographia – The Journal of Integrative Biogeography 31 (2016): 1 – 2 Biogeographia: a brief historical outline of the Societa Italiana di Biogeografia (SIB) VALERIO SBORDONI Department of Biology, Universita di Roma “Tor Vergata”, Roma, Italy e-mail corresponding author: valerio.sbordoni@uniroma2.it EDITORIAL On September 1954, during the 27 th...
Article
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In this paper, we show the results of research that can inform conservation measures elsewhere in Europe for the endangered butterfly Euphydryas aurinia. A five year field study was undertaken to identify the host plant preference of larvae of Euphydryas aurinia provincialis in the Mediterranean and which signals are used by females to lay their eg...
Book
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The main objectives of this research are: 1) the creation of an expert network for the evaluation of the extinction risk of butterfly species in Italy; 2) the evaluation of the extinction risk for these species; 3) the expansion of the baseline - provided by the Italian Red Lists published in the past few years - for future evaluations of biodivers...
Article
All species concepts are rooted in reproductive, and ultimately genealogical, relations. Genetic data are thus the most important source of information for species delimitation. Current ease of access to genomic data and recent computational advances are blooming a plethora of coalescent-based species delimitation methods. Despite their utility as...
Chapter
Full-text available
This paper presents the first attempt to build a georeferenced dataset of the butterflies of Bhutan. The huge range of habitats in Bhutan, from subtropical in the south to alpine in the north, presents a wide assemblage of habitat niches for butterflies. The digitized data was collected by four of the authors (Bozano, Wangdi, Sherub and Sbordoni) d...
Article
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The most stable isotope of radon, 222Rn, represents the major source of natural radioactivity in confined environments such as mines, caves and houses. In this study, we explored the possible radon-related effects on the genome of Dolichopoda cave crickets (Orthoptera, Rhaphidophoridae) sampled in caves with different concentrations of radon. We an...
Article
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Historically, where forest habitats are deemed as the pristine landscape state, anthropogenic habitats such as managed grasslands or open spaces are often perceived to be antagonistic and of secondary conservation priority. Traditionally, studies on biodiversity responses to ecological variation, i.e. edge effect, have mostly focused on forest habi...
Article
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Cave-dwelling organisms belong to widely different evolutionary lineages but they show parallel or convergent evolution in several morphological and physiological traits such as elongated appendages, lower metabolism, specialized sensory systems, loss of eye and pigmentation. Circadian rhythms in locomotor activity have already been documented in h...
Conference Paper
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New tools are available for biogeographic researches such as the modelistic approach called " species distribution modeling " (SDMs). is kind of approach is very useful to investigate several issues in biogeography and conservation biology and in human introduced species too. In this research we applied this methodology to two case study among the...
Article
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The genus Dolichopoda (Orthoptera; Rhaphidopohoridae) is present in Italy with 9 species distributed from northwestern Italy (Piedmont and Liguria) to the southernmost Apennines (Calabria), occurring also in the Tyrrhenian coastal areas and in Sardinia. Three morphologically very close taxa have been described in Piedmont and Liguria, i.e., D. ligu...
Article
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Radon represents the major source of natural radioactivity in confined environments. Despite the clear evidence of a direct association between residential exposure and human lung cancer provided by case-control studies, results relating indoor exposure and genotoxic/mutagenic effect induction are still contradictory. The present study attempts to...
Article
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The four entomological expeditions in Vietnam organized by the Natural History Museum of the University of Florence and the Vietnam National Museum of Nature during the period 2010-2013 are illustrated. The full list of collected material is given. Remarks on Coleoptera Lucanidae and Brentidae, Hemiptera Gerromorpha, Nepomorpha and Leptopodomorpha,...
Article
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To produce a dynamic model of tree line position and habitat suitability for temperate and warm temperate forests, with high spatial and temporal resolution from the Last Glacial Maximum to the present, using an approach based on the quasi-constant altitudinal difference between the tree line altitude (TLA) and the equilibrium line altitude (ELA) o...
Article
In this study, multiple molecular markers [genotyping of 12 nuclear microsatellite loci and the protein-coding gene ldh-c1* plus sequencing of the mitochondrial DNA (mtDNA) control region] were employed to investigate the genetic structure of the two trout forms, Salmo cettii and Salmo fibreni, inhabiting Lake Posta Fibreno, central Italy. The two...
Article
Full-text available
The main aim of this study was to investigate and compare the patterns of male courtship behaviour in Hipparchia fagi (Woodland Grayling) and H. hermione genava (Rock Grayling) in order to determine if premating barriers are involved in the reproductive isolation between the two sympatric and syntopic species. Although they show a similar pattern o...
Article
The genus Eupholidoptera includes 46 Mediterranean species distributed from Turkey to Greece, Italy and southern France. In the eastern part of its range, Eupholidoptera has been considered to consist of several distinct species, while in the Balkans and Italian peninsula only E. chabrieri has been recognized. However, the status of some Italian po...
Data
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Karst habitats host a high number of specialized organisms that contribute to complex and peculiar food webs. In underground aquatic habitats, vertebrates are the top predators that strongly influence and regulate prey communities. In this study, the diet of the Italian crested newt, Triturus carnifex, in the world's deepest karst phreatic sinkhole...
Article
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Aim Our study provides a description of the mitogenetic structure of alpine butterflies of the Parnassius phoebus complex throughout their Holarctic distribution. Our analyses extend and reassess population history models for alpine butterflies under an explicit calibration of their mitochondrial DNA (mtDNA) substitution rate. Location Mountain ran...
Article
Two species of chironomid midges are currently described in the genus Belgica Jacobs, 1900. Belgica antarctica Jacobs, 1900 is endemic to parts of the maritime Antarctic, and Belgica albipes (Séguy, 1965) is endemic to Îles Crozet, a sub‐Antarctic archipelago in the southern Indian Ocean. The relationships between these species, and their closest k...