Search

Start Over Creator Martínková, Natália

2. Chamois introductions to Central Europe and New Zealand

Creator:
Martínková, Natália, Zemanová, Barbora, Kranz, Andreas, Giménez, Mabel D., and Hájková, Petra
Type:
article, model:article, and TEXT
Subject:
Alpine chamois, animal translocations, introduction, invasive species, and Rupicapra rupicapra
Language:
English
Description:
Chamois (Rupicapra rupicapra) introductions were popular at the beginning of the 20th century when first animals were shipped from Austria to the Czech Republic and New Zealand. The historical record of the Czech introduction indicates Neuberg Mürzsteg Game Reserve in Eastern Alps, Styria, Austria as the main area of origin of founders. First animals for the New Zealand population are thought to have originated from Ebensee, Upper Austria, Austria and later more animals came from the Mürzsteg region. We sequenced mitochondrial control region of chamois from the introduced populations and their putative source areas, and we applied median-joining networks and Bayesian inference analysis to distinguish the regions of origin of female founders. We found the Mürzsteg region as the most likely source population for introductions to the Czech Republic and New Zealand, supplemented with close association with sequences from Ebensee in populations from the Czech Republic. Genetic diversity present in the Czech Republic was further relocated to the introduced populations in Slovakia in the 1960’s.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

3. fragmented distribution range of Microtus tatricus and its evolutionary implications

Creator:
Martínková, Natália and Dudich, Alexander
Type:
article and TEXT
Subject:
Rodentia, Arvicolidae, Microtus multiplex complex, mountains, subalpine habitat, phylogeny, colonisation history, and molecular species identification
Language:
English
Description:
Microtus tatricus occurs in the Carpathian Mountains of Slovakia, Poland, Ukraine and Romania – a list of current distribution records is given. The species’ distribution range is insular on the scale of its entire distribution and fragmented within each mountain range inhabited. The overall altitudinal range is 650–2350 m a.s.l., with the largest number of collecting sites situated between 1100–1700 m a.s.l. The total range size of M. tatricus was estimated as 840 km2 and the total population size at between 200,000–250,000 individuals. A possible reduction in the species’ distribution range is discussed.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/

4. Karyotypic relationships of the Tatra vole (Microtus tatricus)

Creator:
Martínková, Natália, Nová, Petra, Sablina, Olga V., Graphodatsky, Alexander S., and Zima, Jan
Type:
article and TEXT
Subject:
chromosomes, banding pattern, phylogeny, M. subterraneus, M. gregalis, and M. afghanus
Language:
English
Description:
This study reports for the first time the banding pattern on chromosomes of the Tatra vole, Microtus tatricus, as revealed by G-, C-, and Ag-NOR staining procedures. The banded karyotype of M. tatricus was compared with Microtus (Terricola) subterraneus, M. (Stenocranius) gregalis, and M. (Blanfordimys) aghanus. The karyotype of M. tatricus possesses highly derived features, e.g., the low diploid number of chromosomes or unique combinations of arms in the biarmed autosomes. It is almost impossible to find clear relationships of M. tatricus with other extant vole species from the point of view of comparative karyology. The karyotypic changes in voles are apparently not accompanied by adequate divergence in morphological and genetic traits.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/

6. Multilocus phylogeny of arvicoline voles (Arvicolini, Rodentia) shows small tree terrace size

Creator:
Martínková, Natália and Moravec, Jiří
Type:
article, model:article, and TEXT
Subject:
divergence, evolutionary history, supertree, supermatrix, phylogenetic tree terrace, Microtus, and Arvicolinae
Language:
English
Description:
We combined mitochondrial (cyb, control region, coi, nd4) and nuclear (irbp, ghr, sry, lcat) DNA sequence data to infer phylogenetic relationships of arvicoline voles. The concatenated supermatrix contained 72.8 % of missing data. From this dataset, Bayesian inference showed close relationships of Arvicola and Chionomys, Proedromys with Lasiopodomys and Microtus gregalis, Phaiomys with Neodon and M. clarkei. Genus Microtus formed a supported group with Blanfordimys and N. juldaschi. The gene partition taxon sets were explained in the multilocus phylogeny in such a way that the resulting Bayesian inference tree represented a unique solution on a terrace in the tree space. This means that although the supermatrix contained a large proportion of missing data, it was informative in retrieving a phylogeny with a unique optimality score, tree likelihood.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

7. origin and phylogenetic relationships of Microtus bavaricus based on karyotype and mitochondrial DNA sequences

Creator:
Martínková, Natália, Zima, Jan, Jaarola, Maarit, Macholán, Miloš, and Spitzenberger, Friederike
Type:
article and TEXT
Subject:
Terricola, molecular divergence, and glaciation
Language:
English
Description:
Geographic isolation of small populations in refugia during late Pleistocene glaciations resulted in population differentiation that in some cases lead to speciation. We report the karyotype of Microtus bavaricus, an evolutionary young and threatened rodent endemic to the Alps. Our results show that the karyotype of M. bavaricus is almost identical to that of M. liechtensteini (2N = 46, NF = 54). A close relationship between the two species was also supported by phylogenetic analysis of complete mitochondrial DNA sequences for the cytochrome b gene. The cytochrome b divergence between Microtus bavaricus and M. liechtensteini was 1.7 %, the lowest estimate observed among the 14 currently recognised species of Eurasian pine voles (subgenus Terricola).
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/

8. Phylogeny of species and cytotypes of mole rats (Spalacidae) in Turkey inferred from mitochondrial cytochrome b gene sequences

Creator:
Kandemir, İrfan, Sözen, Mustafa, Matur, Ferhat, Kankiliç, Teoman, Martínková, Natália, Çolak, Faruk, Öskurt, Sakir Ö., and Çolak, Ercument
Type:
article, model:article, and TEXT
Subject:
Nannospalax, molecular phylogeny, chromosomal form, Anatolia, and Thrace
Language:
English
Description:
We described the genetic variation of cytochrome b gene sequences of blind mole rats in Turkey. We examined 47 individuals belonging to nine cytotypes of three superspecies Nannospalax leucodon, N. xanthodon and N. ehrenbergi in the 402bp gene sequence of cytochrome b. Phylogenetic analyses showed that relationships between cytotypes were well supported, but deeper divergence between species showed insignificant relationships. Cytotypes of N. xanthodon with low diploid number of chromosomes from western Turkey formed a monophyletic group distinct from the populations with higher number of chromosomes (2n = 56-60). The monophyly of N. xanthodon was supported with respect to N. leucodon (2n = 56) in the Bayesian and maximum likelihood phylogenies. The divergence between two analyzed cytotypes of N. ehrenbergi (2n = 52, 2n = 56) was 9.4 %, and the Kilis cytotype (2n = 52) appeared as the basal branch of the whole analysed dataset. N. ehrenbergi cytotypes were paraphyletic and they formed unsupported relationships with previously described N. galili (2n = 52), N. golani (2n = 54), N. carmeli (2n = 58) and N. judaei (2n = 60) from Israel. The results of this study showed that the Nannospalax species complex most likely represents more species than currently recognized, especially in N. xanthodon. We suggest that cytotypes of N. xanthodon and N. ehrenbergi from Turkey should be investigated in detail as possible candidates for being separate species.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

10. Quantifying colour difference in animals with variable patterning

Creator:
Dračková, Tereza, Smolinský, Radovan, Hiadlovská, Zuzana, Dolinay, Matej, and Martínková, Natália
Format:
počítač and online zdroj
Type:
model:article and TEXT
Subject:
colouration, Reptilia, image analysis, colour pattern, RGB, and CIELAB
Language:
English
Description:
Colour pattern influences behaviour and affects survival of organisms through perception of light reflectance. Spectrophotometric methods used to study colour optimise precision and accuracy of reflectance across wavelengths, while multiband photographs are generally used to assess the complexity of colour patterns. Using standardised photographs of sand lizards (Lacerta agilis), we compare how colours characterised using point measurements (using the photographs, but simulating spectrophotometry) on the skin differ from colours estimated by clustering pixels in the photograph of the lizard's body. By taking photographs in the laboratory and in the field, the experimental design included two 2-way comparisons. We compare point vs. colour clustering characterisation and influence of illumination in the laboratory and in the field. We found that point measurements adequately represented the dominant colour of the lizard. Where colour patterning influenced measurement geometry, image analysis outperformed point measurement with respect to stability between technical replicates on the same animal. The greater colour variation derived from point measurements increased further under controlled laboratory illumination. Both methods revealed lateral colour asymmetry in sand lizards, i.e. that colours subtly differed between left and right flank. We conclude that studies assessing the impact of colour on animal ecology and behaviour should utilise hyperspectral imaging, followed by image analysis that encompasses the whole colour pattern.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public