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001-es BibID:	BIBFORM070967
Első szerző:	Fehér Zoltán
Cím:	Phylogeny and phylogeography of the species group (Gastropoda: Hygromiidae) / Fehér Zoltán, Szabó Krisztián, Bozsó Miklós, Pénzes Zsolt
Dátum:	2009
ISSN:	0947-5745
Megjegyzések:	The Lozekia-Kovacsia species group comprises three species of high conservation concern, Lozekia transsilvanica (Westerlund, 1876), Lozekia deubeli (M. Kimakowicz, 1890) and Kovacsia kovacsi (Varga and L. Pintér, 1972), which occupy relatively small ranges in the Carpathian-Pannonian region. Despite their conservation concern, the phylogeny and biogeographical history of these species have not been studied by molecular methods up to now. This study, based on mitochondrial cytochrome oxidase subunit I gene sequences, has two main objectives: (i) to infer the phylogenetic relationships within the group in order to test the latest morphology-based system, proposed by Nordsieck [1993, Das System der paläarktischen Hygromiidae (Gastropoda: Stylommatophora: Helicoidea). Arch Molluskenkunde 122:1] and (ii) to reconstruct the distribution history of the three species. The monophyly and thus the systematic distinctness of the three species was confirmed, but our findings do not support the monophyly of the Lozekia genus and therefore contradict the current system of the species group. Genetic diversity was found to be much higher within L. deubeli than within the other two species, a possible explanation of this phenomenon is that L. transsilvanica and K. kovacsi are more recently evolved, younger species. Nested clade phylogeographycal analysis showed that the three species evolved by fragmentation events; probably L. deubeli and the ancestor of the other two species split first. At the intraspecific level, fragmentation events, as well as range expansion, played a significant role in the biogeographical history of this species group. As our findings are based on a single mitochondrial gene, we feel premature to propose changes in the generally accepted system and nomenclature. Further molecular phylogenetic analyses, also involving nuclear DNA sequences, should clarify if the evolutionary scenario suggested by our data is valid, and the three species can indeed be placed within the same genus, Lozekia.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban Lozekia Kovacsia Hygromia Carpathians Pannon Pannonicum phylogeography phylogeny mitochondrial cytochrome oxidase subunit I
Megjelenés:	Journal Of Zoological Systematics And Evolutionary Research 47 : 4 (2009), p. 306-314. -
További szerzők:	Szabó Krisztián (1975-) (zoológus) Bozsó Miklós Pénzes Zsolt
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM070965
Első szerző:	Vörös Judit
Cím:	Increased genetic structuring of isolated populations (Caudata: Salamandridae) at the margins of the Carpathian Mountains / Vörös Judit, Ursenbacher Sylvain, Kiss István, Jelić Dušan, Schweiger Silke, Szabó Krisztián
Dátum:	2017
ISSN:	0947-5745 1439-0469
Megjegyzések:	The traditional southern Pleistocene refugia hypothesis in Europe has lately been challenged for several animal and plant species. The Carpathian Basin, especially at the marginal regions, is one of the recently recognized biodiversity hotspots in Europe. Marginal populations are prone to have lower genetic diversity and higher genetic differentiation than central populations. Here, we examined one mitochondrial DNA fragment (D-loop) and nine nuclear (microsatellite) loci to describe the genetic diversity and phylogeographical pattern of fire salamander (Salamandra salamandra) populations in the Carpathian Basin with focusing on the southern margins of the Western Carpathians, where isolated populations of this species are present. Analyses of microsatellites indicated reduced genetic diversity for most of the isolated populations. Based on the mitochondrial DNA, only two haplotypes were found, whereas the analyses with the nuclear markers revealed a more recent genetic split between Western (Alpine) and Eastern (Carpathian) populations, and separated the Apuseni Mountains population (part of the Western Carpathians). Using approximate Bayesian computation analyses, we identified the most probable colonization scenario for the isolated North Hungarian Carpathian Basin populations. The split between isolated salamander populations from the central populations in the Carpathian Mountains dates back to the beginning of the Late Pleistocene, while the split between most of the Hungarian populations can be associated with the Last Glacial Maximum. We found evidence for long-time isolation between the marginal Carpathian Basin and central populations. Our results also show that S. salamandra survived glacial periods in the temperate forests of north-east Pannonia (North Hungarian Mountains), confirming that the Carpathian Basin served as important northerly refugia during the Pleistocene climatic oscillations.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban Salamandra salamandra Carpathian Mountains northerly refugia phylogeography
Megjelenés:	Journal Of Zoological Systematics And Evolutionary Research 55 : 2 (2017), p. 138-149. -
További szerzők:	Ursenbacher, Sylvain Kiss István Jelić, Dušan Schweiger, Silke Szabó Krisztián (1975-) (zoológus)
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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