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Edible dormice on the Mediterranean island of Cres
Boris Kryštufek, Toni Koren, 2011, objavljeni povzetek znanstvenega prispevka na konferenci

Najdeno v: osebi
Ključne besede: edible dormouse, Glis glis, Cres
Objavljeno: 15.10.2013; Ogledov: 2411; Prenosov: 18
URL Polno besedilo (0,00 KB)

Šakali vse okrog nas
Boris Kryštufek, 2011, strokovni članek

Najdeno v: osebi
Ključne besede: šakali, Slovenija
Objavljeno: 15.10.2013; Ogledov: 2476; Prenosov: 15
URL Polno besedilo (0,00 KB)

Evidence of a complex phylogeographic structure in the common dormouse, Muscardinus avellanarius (Rodentia, Gliridae)
Alice Mouton, Andrea Grill, Maurizio Sara, Boris Kryštufek, Ettore Randi, Giovanni Amori, Rimvydas Juškaitis, Gaetano Aloise, Alessio Mortelliti, Fabiana Panchetti, Johan Michaux, 2012, izvirni znanstveni članek

Opis: This is the first mitochondrial phylogeography of the common dormouse, Muscardinus avellanarius (Linnaeus, 1758), a hibernating rodent strictly protected in Europe (Habitat Directive, annex IV; Bern Convention, annex III).The 84 individuals of M. avellanarius, sampled throughout the distributional range of the species, have been sequenced at the mitochondrial DNA gene (cytochrome b, 704 base pairs). The results revealed two highly divergent lineages, with an ancient separation around 7.7 Mya and a genetic divergence of 7.7%. Lineage 1 occurs in Western Europe (France, Belgium, and Switzerland) and Italy, and lineage 2 occurs in Central-Northern Europe (Poland, Germany, Latvia, and Lithuania), on the Balkan Peninsula, and in Turkey. Furthermore, these two lineages are subdivided into five sublineages genetically isolated with a strong geographical association. Therefore, lineage 1 branches into two further sublineages (Western European and Italian), whereas lineage 2 contained three sublineages (Central-Northern European, Turkish, and Balkan). We observed low genetic diversity within the sublineages, in contrast to the significant level of genetic differentiation between them. The understanding of genetic population structure is essential for identifying units to be conserved. Therefore, these results may have important implications for M. avellanarius conservation
Najdeno v: osebi
Ključne besede: Rodentia, Gliridae, common dormouse, Muscardinus avellanarius, conservation, cytochrome b, glacial refugia
Objavljeno: 15.10.2013; Ogledov: 1511; Prenosov: 87
URL Polno besedilo (0,00 KB)

Mitochondrial phylogeography of the edible dormouse (Glis glis) in the western Palearctic region
Helene Hürner, Boris Kryštufek, Maurizio Sará, Alexis Ribas, Tanja Ruch, R. Sommer, Victoria Ivashkina, Jochan R. Michaux, 2010, izvirni znanstveni članek

Opis: This study describes in detail the phylogeographic pattern of the edible dormouse (Glis glis) a European rodent with pronounced hibernating behavior. We used sequences of 831 base pairs of the mitochondrial DNA cytochrome-b gene from 130 edible dormice collected at 43 localities throughout its distribution. Our results reveal presence of 3 main haplogroups: Sicilian, South Italian (restricted to the Calabrian region), and European (a widespread lineage corresponding to all remaining western, central, and eastern European populations). Examination of paleontological data confirms refugial regions for G. glis in the 3 Mediterranean peninsulas, although overall low genetic diversity is found. The low diversity of the European lineage is probably the result of a recent expansion (dated around 2,000 years ago) from a single refugium. Other factors, such as the ecological constraints on the species, may have caused genetic bottlenecks that reinforced the low genetic variability of G. glis. This work could have important implications for strategies to conserve the edible dormouse by defining important areas for their conservation.
Najdeno v: osebi
Ključne besede: dormouse, Glis-glis, glacial refugia, mitochondrial DNA, phylogeography, Europe
Objavljeno: 15.10.2013; Ogledov: 1613; Prenosov: 56
URL Polno besedilo (0,00 KB)

Species richness and distribution of non-volant small mammals along an elevational gradient on a Mediterranean mountain
Boris Kryštufek, Nataša Režek Donev, Janko Skok, 2011, izvirni znanstveni članek

Opis: We explored the alpha and gamma patterns in species richness of non-volant small mammals on Mt. Snežnik (sea level: 1796 m) on the northern edge of the Mediterranean Basin. A total of 2871 individuals were sampled belonging to 23 different species of rodents and soricomorphs. Two estimates of true species richness (sample-based rarefaction and abundance-based coverage estimator of species richness, ACE) yielded very similar values to empirical data. The empirical number of species varied between 4 and 11 per station in alpha-richness and between 5 and 17 per 200 m elevational interval in gamma-richness. The 95% confidence intervals for ACE overlapped between elevations in both data sets, hence not a single sampling site or elevational interval emerged statistically richest or poorest in the number of species. The two patterns responded to elevation in a very different way but any of the curves was decidedly humped. The mid-domain effect predictions failed to reproduce the pattern of observed or estimated species richness, and hence the ranges were located non-randomly along the elevational gradient. The pattern of distribution and diversity is supposedly generated by the environmental variables correlated to the elevation, which vary in a non-random manner with elevation
Najdeno v: osebi
Objavljeno: 15.10.2013; Ogledov: 1828; Prenosov: 41
URL Polno besedilo (0,00 KB)

Unusual occurrence of the bicoloured white-toothed shrew (Crocidura leucodon)
Boris Kryštufek, 2009, kratki znanstveni prispevek

Najdeno v: osebi
Ključne besede: Crocidura leucodon, habitat selection, altitudinal distribution, Slovenia, South Europe
Objavljeno: 15.10.2013; Ogledov: 3106; Prenosov: 27
URL Polno besedilo (0,00 KB)

Mitochondrial cytochrome b sequences resolve the taxonomy of field mice (Apodemus) in the western Balkan refugium
Boris Kryštufek, Martina Lužnik, Elena Bužan, 2012, izvirni znanstveni članek

Opis: Apodemus sylvaticus stankovici, described from the topographically rough landscape of the western Balkan glacial refugium, was recently proposed as being either a junior synonym of Apodemus flavicollis or a species on its own right. To untangle this taxonomic vagueness, we sequenced complete cytochrome b gene in 28 field mice collected at 12 locations in the mountains of Bosnia and Herzegovina, Montenegro, western Macedonia and northern Greece. Samples yielded 27 new haplotypes which clustered into two distinct groups. One of these clades also included the reference haplotype of A. flavicollis, while another cluster emerged as being identical with the reference sample for A. sylvaticus. As is common in Apodemus, both species retrieved in our analysis were characterized by low levels of intraspecific variation (0.4- 0.9%) as opposed to a high level of differentiation between them (8.0-10.0%); therefore, the taxonomic classification of our material was without doubt. We found no evidence regarding the presence of an additional cryptic species in the mountains of the western Balkans. The very similar values of genetic variability in the two species imply their common evolutionary history of a long-term coexistence in the western Balkan refugium
Najdeno v: osebi
Ključne besede: Mice, Apodemus flavicollis, Apodemus sylvaticus, Apodemus stankovici, molecular taxonomy
Objavljeno: 15.10.2013; Ogledov: 2464; Prenosov: 58
URL Polno besedilo (0,00 KB)

The status of a rare phylogeographic lineage of the vulnerable European souslik Spermophilus citellus, endemic to central Macedonia
Boris Kryštufek, Peter Glasnović, Svetozar Petkovski, 2012, kratki znanstveni prispevek

Opis: The conversion of grasslands for agriculture has triggered a serious decline of the European ground squirrel or souslik Spermophilus citellus, categorized as Vulnerable on the IUCN Red List since 1996. The Jakupica phylogeographic lineage of central Macedonia is the smallest of the three major evolutionary lines of the European souslik. This lineage is an important reservoir of within-species diversity and should be regarded as an independent unit for conservation management purposes. It is endemic to Mount Jakupica, where it lives in mountain pastures at 1,500-2,250m altitude. The total area occupied by sousliks (884 ha) is fragmented and 94% of individuals occur in four colonies. Densities (0.8-5.5 adults ha-1) are lower than those reported elsewhere for the species, with the total population probably ,2,000 adults. One large colony, reportedly of c. 1,000 sousliks, was decimated in 2007 by a catastrophic fire and had still not recovered bz 2010. A steady decline in livestock grazing, together with the predicted advance of the tree line as a consequence of climate change, will probably reduce the optimal habitat for the souslik and negatively affect population fitness. Monitoring needs to be implemented, at least for the largest colonies, to provide early warning of any declines
Najdeno v: osebi
Ključne besede: Spermophilus citellus, souslik, European souslik, density, endemic, distance sampling, fragmentation, Macedonia
Objavljeno: 15.10.2013; Ogledov: 2194; Prenosov: 49
URL Polno besedilo (0,00 KB)

Female reproductive characteristics of the Horvath's rock lizard (Iberolacerta horvathi) from Slovenia
Katarina Ljubisavljević, Peter Glasnović, Katja Kalan, Boris Kryštufek, 2012, izvirni znanstveni članek

Opis: In this paper, we present data on the female reproductive traits of the Horvath's rock lizard from Slovenia. The clutch, egg and hatchling characteristics were investigated based on clutches laid in laboratory conditions by pregnant females collected from a natural population. A female lays one clutch of eggs annually with an average number of three (range 1-5) eggs. We found a significant positive correlation between female size and egg width and volume. The mean egg length and volume in a clutch decreased significantly with clutch size independently of female size. The incubation period averaged 44 days. Significant positive correlations were found between the hatchling total length and mass, and egg mass. There was a significant negative relationship between the egg mass and incubation duration. The life-history strategy of the Horvath's rock lizard appeared to be shaped by several factors, such as the constraints of a high-altitude environment, flattened body morphology and possibly phylogenetic background
Najdeno v: osebi
Ključne besede: Horvatova kuščarica, Iberolacerta horvathi, kuščarice, življenjski ciklus
Objavljeno: 15.10.2013; Ogledov: 1788; Prenosov: 35
URL Polno besedilo (0,00 KB)

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