Giovanni B. Delmastro

Giovanni B. Delmastro
Museo Civico di Storia Naturale, Carmagnola

Master of Science

About

121
Publications
84,446
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1,067
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Publications

Publications (121)
Article
Full-text available
The massive occurrence of a new alien loach species in Piedmont (NW Italy) (Actinopterygii: Cobitidae). Most of riverine habitats of Piedmont plain have been colonized by an exotic loach of possible Danubian origin: this paper reports the known occurrence sites of this new exotic species. We hypothesize that the invasion of this area began in the l...
Article
Full-text available
Invasive alien species are a major driver of biodiversity loss, with their impacts potentially more intense when complexes of cryptic species are involved. In freshwaters, the anthropogenic manipulation of fish communities has resulted in altered fish communities, and in Europe has increased the complexity of Phoxinus species assemblages. Here, we...
Article
Two fluviolacustrine lineages (SI1 Barbus and SI2 Barbus) of the Barbus genus have been recently detected in the Apulia-Campania ichthyogeographic district (southern Italy). The aim of this study was to solve the taxonomic structure of these lineages by comparing them with the two already established Italian fluviolacustrine species B. plebejus and...
Article
The role of south-western Alps as a corridor for Mediterranean trout (Salmo trutta complex Linnaeus, 1758) was evaluated in order to understand the influence of the last glacial events in shaping the spatial distribution of the genetic diversity of this salmonid. For this, the allochthonous hypothesis of a man-mediated French origin (19th century)...
Article
The results of a historic ichthyological expedition to Algeria and Tunisia are presented. In September 1982, 14 species were recorded at 32 locations. The only alien species recorded was Gambusia holbrooki, which was widespread. Anaecypris punica and Haplochromis desfontainii are still recorded these times from Algeria, in addition to Tropidophoxin...
Article
Full-text available
Riassunto Vengono presentati i risultati del Gruppo di Lavoro (GdL) sulla Sistematica e la Nomenclatura delle specie ittiche d'acqua dolce italiane istituito in seno all'A.I.I.A.D. Il GdL, in circa quattro anni di attività, ha fatto il punto sull'attuale situazione tassonomica delle specie ittiche italiane (Ciclostomi e Pesci ossei) con particolare...
Article
Full-text available
The comparison of a 1635 bp fragment of the first intron of the S7 ribosomal protein coding gene, a commonly used phylogenetic marker, for specimens from the three European pike species Esox aquitanicus, Esox cisalpinus and Esox lucius highlights diagnostic sites and indels constituting molecular synapomorphies. Both the sequence alignment and the...
Conference Paper
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Article
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Background Pikes represent an important genus (Esox) harbouring a pre-duplication karyotype (2n = 2x = 50) of economically important salmonid pseudopolyploids. Here, we have characterized the 5S ribosomal RNA genes (rDNA) in Esox lucius and its closely related E. cisalpinus using cytogenetic, molecular and genomic approaches. Intragenomic homogenei...
Article
Full-text available
Minnows of the genus Phoxinus are promising candidates to investigate adaptive divergence , as they inhabit both still and running waters of a variety of altitudes and climatic zones in Europe. We used landmark-based geometric morphometric methods to quantify the level of morphological variability in Phoxinus populations from streams and lakes of N...
Article
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The question whether taxonomic descriptions naming new animal species without type specimen(s) deposited in collections should be accepted for publication by scientific journals and allowed by the Code has already been discussed in Zootaxa (Dubois & Nemésio 2007; Donegan 2008, 2009; Nemésio 2009a–b; Dubois 2009; Gentile & Snell 2009; Minelli 2009;...
Data
This plot is not part of the published stance but derives from it. The plot shows the number of authors by geographic region (courtesy of Dr. Diego Astua).
Article
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In this short note we report the sudden and numerically significant expansion of signal crayfish (P. leniusculus) from Piedmont towards Liguria. P. leniusculus (Decapode Astacidae) is native to northwestern America, introduced in Italy in 1981 in the province of Bolzano, a few years later it was reported in Brugneto Lake (Genova district) and durin...
Article
This integrative study examined the morphological and genetic affinities of three endemic barbel species from Italy (brook barbel Barbus caninus, Italian barbel Barbus plebejus and horse barbel Barbus tyberinus) and of putative hybrid specimens to their species of origin. Two of the species frequently occur together with the non-native barbel Barbu...
Article
Full-text available
In Italy over the last three decades air-breathing catfish taxa belonging to the family Clariidae have often been released in ponds and small lakes devoted to recreational fishing activity; until now cases of self-sustaining populations have not been reported. While some species have been reported in the Italian ichthyological literature, it seems...
Conference Paper
With only one species of pike in Europe (Esox lucius Linnaeus, 1758), Esox systematics was considered settled for decades. However recent taxonomical studies of European pikes led to the discovery of two new species: Esox cisalpinus Bianco & Delmastro, 2011 from Northern and Central Italy, and Esox aquitanicus Denys et al. 2014 in the South-West of...
Article
In the last decades, the distribution and abundance of great cormorants have extraordinarily increased throughout Europe. Many studies reported that great cormorants may impact fish populations not only by consuming large number of individuals but also by wounding them. Most studies regarded fish farms and cultured species, but there is less inform...
Article
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Previous studies have given substantial attention to external factors that affect the distribution and diversification of freshwater fish in Europe and North America, in particular Pleistocene and Holocene glacial cycles. In the present paper we examine sequence variation at one mitochondrial and four nuclear loci (over 3kbp) from populations sampl...
Poster
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L’ordine Siluriformes comprende un vastissimo gruppo di pesci dulciacquicoli (raramente anche marini) che conta oltre 3100 specie ripartite in 34 famiglie variamente diffuse nel continente africano, euro-asiatico, americano ed australiano. Nessun taxon è autoctono in Italia, dove, a partire dai primi anni del novecento, vennero introdotte specie de...
Article
Incomplete knowledge of biodiversity remains a stumbling block for conservation planning, and even occurs within globally important Biodiversity Hotspots. Although technical advances have boosted the power of molecular biodiversity assessments, the link between DNA sequences and species and the analytics to discriminate entities, remain crucial. He...
Conference Paper
Full-text available
Riassunto Il completo isolamento delle specie di lamprede stenoaline italiane può essere datato a circa 2 milioni d'anni fa, visto che a tal periodo si fanno risalire importanti eventi orografici della penisola, compresa la formazione dei principali bacini fluviali. Adottando criteri parsimoniosi, è possibile quindi ipotizzare l'esistenza, a quella...
Article
Full-text available
The genetic variability among Italian populations of the white-clawed crayfish (Austropotamobius pallipes) was examined to determine their phylogeography and to assess their conservation status as a management unit. A fragment of the mitochondrial DNA COI gene of 107 specimens from ten populations was sequenced, and the phylogenetic relationships w...
Article
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Pacifastacus leniusculus (Dana, 1852), a new exotic crayfish species established in Piedmont (NW Italy) (Crustacea: Decapoda: Astacidae). A breeding population of the Nearctic Signal crayfish Pacifastacus (Pacifasta-cus) leniusculus leniusculus (Dana, 1852) is reported in a small tributary of the Bormida river in southeastern Piedmont. This species...
Article
The phylogeographic structure of vairone (Telestes muticellus), a primary freshwater fish endangered in a large part of its distributional range, was assessed: (i) to reconstruct the complex dispersion pattern in the upper Tyrrhenian hydrographic basins of Ligury, actually not recognised as peri-Mediterranean ichthyogeographic district, and (ii) to...
Article
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The first record of Gobius couchi for the Ligurian Sea and the second record of this rare gobiid fish for the western Mediterranean are reported.
Article
The phylogeographical pattern of vairone (Telestes muticellus) populations was assessed to test the biogeographical distinction of three peri-Mediterranean ichthyogeographical districts: Padano-Venetian (PV), Tuscano-Latium (TL) and southern France (SF), evaluating the role of Alpine and Apennine barriers in shaping distinct evolutionary lineages....
Article
The freshwater faunas of the Italian peninsula are isolated from the rest of Europe by the geographic barrier of the Alps and consequently have developed many endemic forms and contain few non-endemic species. However, some 'non-endemics' may either represent recent invaders of the Adriatic basin or cryptic endemic species. To test these two hypoth...