Yes (215)
Number of found documents:
215
Published from
to
Populačně genetická struktura sysla obecného v České republice
ŘÍČANOVÁ, Štěpánka
2012 - English
The European ground squirrel is considered an endangered species with declining numbers throughout Europe. Here, we analysed European ground squirrels from six Czech and one Slovak localities using five microsatellite loci as genetic marker. The results show a strong genetic differentiation among the investigated populations (mean value of FST = 0.16) and high levels of inbreeding (values of FIS ranged from 0.34 to 0.90). One of the most important factors is the lack of migration due to the large distances between the populations and the presence of migration barriers. Based on the results obtained we recommend a few suggestions for a conservation management of this species. Sysel obecný je považován za ohrožený druh s klesající tendencí v celé Evropě. Analyzovali jsme sysli z šesti českých a jedné slovenské lokality pomocí pěti mikrosatelitních lokusů. Výsledky ukazují silnou genetickou diferenciaci mezi zkoumanými populacemi (průměrná hodnota FST = 0,16) a vysoký stupeň příbuzenského křížení(FIS v rozmezí hodnot 0,34 až 0,90). Jeden z nejdůležitějších faktorů je nedostatečná migrace vzhledem k velké vzdálenosti mezi populacemi a přítomnost migračních bariér. Na základě získaných výsledků doporučujeme několik opatření k ochraně druhu.
Available in the Digital Repository of University of South Bohemia.
Populačně genetická struktura sysla obecného v České republice
The European ground squirrel is considered an endangered species with declining numbers throughout Europe. Here, we analysed European ground squirrels from six Czech and one Slovak localities using ...
Splicting of intron-containing of plant LTR retrotransposen \kur{Ogre}
STEINBAUEROVÁ, Veronika
2008 - English
Available in the Digital Repository of University of South Bohemia.
Splicting of intron-containing of plant LTR retrotransposen \kur{Ogre}
The stabilizing effect of resting eggs banks of the Daphnia longispina species complex for longitudinal taxon heterogeneity in long and narrow reservoirs
VANÍČKOVÁ, Ivana
2013 - English
We compared the spatial distribution of taxa from the Daphnia longispina complex in the active water column community and in the resting egg banks in five long narrow reservoirs in the Czech Republic (Central Europe). We concluded that the spatial heterogeneity of Daphnia taxonomic composition observed in reservoirs is substantially strengthened by the presence of spatially heterogeneous egg banks. We compared the spatial distribution of taxa from the Daphnia longispina complex in the active water column community and in the resting egg banks in five long narrow reservoirs in the Czech Republic (Central Europe). We concluded that the spatial heterogeneity of Daphnia taxonomic composition observed in reservoirs is substantially strengthened by the presence of spatially heterogeneous egg banks.
Keywords:
ephippia; resting eggs; Daphnia; reservoir; hybridization
Available in the Digital Repository of University of South Bohemia.
The stabilizing effect of resting eggs banks of the Daphnia longispina species complex for longitudinal taxon heterogeneity in long and narrow reservoirs
We compared the spatial distribution of taxa from the Daphnia longispina complex in the active water column community and in the resting egg banks in five long narrow reservoirs in the Czech Republic ...
Tick-borne encephalitis virus inhibits rRNA synthesis and host protein production in human cells of neural origin
SELINGER, Martin
2019 - English
Tick-borne encephalitis virus (TBEV), a member of the genus Flavivirus (Flaviviridae), is a causative agent of a severe neuroinfection. Recently, several flaviviruses have been shown to interact with host protein synthesis. In order to determine whether TBEV interacts with this host process in its natural target cells, we analysed de novo protein synthesis in a human cell line derived from cerebellar medulloblastoma (DAOY HTB-186). We observed a significant decrease in the rate of host protein synthesis, including the housekeeping genes HPRT1 and GAPDH and the known interferon-stimulated gene viperin. In addition, TBEV infection resulted in a specific decrease of RNA polymerase I transcripts, 18S and 28S rRNAs and their precursor, 45-47S pre-rRNA, but had no effect on the RNA polymerase III-transcribed 5S rRNA levels. Tick-borne encephalitis virus (TBEV), a member of the genus Flavivirus (Flaviviridae), is a causative agent of a severe neuroinfection. Recently, several flaviviruses have been shown to interact with host protein synthesis. In order to determine whether TBEV interacts with this host process in its natural target cells, we analysed de novo protein synthesis in a human cell line derived from cerebellar medulloblastoma (DAOY HTB-186). We observed a significant decrease in the rate of host protein synthesis, including the housekeeping genes HPRT1 and GAPDH and the known interferon-stimulated gene viperin. In addition, TBEV infection resulted in a specific decrease of RNA polymerase I transcripts, 18S and 28S rRNAs and their precursor, 45-47S pre-rRNA, but had no effect on the RNA polymerase III-transcribed 5S rRNA levels.
Keywords:
tick-borne encephalitis; host response; rRNA; transcriptional/translational shut-off
Available in the Digital Repository of University of South Bohemia.
Tick-borne encephalitis virus inhibits rRNA synthesis and host protein production in human cells of neural origin
Tick-borne encephalitis virus (TBEV), a member of the genus Flavivirus (Flaviviridae), is a causative agent of a severe neuroinfection. Recently, several flaviviruses have been shown to interact with ...
Role of adipokinetic hormone during starvation in Drosophila
KUTHANOVÁ, Michaela
2020 - English
The role of adipokinetic hormone (Drome-AKH) in maintaining the levels of basic nutrients, under starvation conditions, was studied using Drosophila melanogaster mutants with AKH deficiency (Akh1) and AKH abundance (EE-Akh). Our results showed lipids as the main energy reserve in Drosophila, and their physiological level and metabolism were shown to be under the control of AKH. AKH abundance in the body resulted in lower levels of triacylglycerols and diacylglycerols than in the controls, probably due to a more intensive metabolism; interestingly, there was a disproportional representation of fatty acids in triacylglycerols and diacylglycerols in Drosophila. Lower level of glycogen and its partial control by AKH suggest its lesser role as the storage substance. However, maintenance of free carbohydrate level in Drosophila seemed to be critical; when glycogen stores are exhausted, carbohydrates are synthesized from other sources. Protein levels and their alterations, under starvation, did not seem controlled by AKH. AKH-deficient flies were more resistant while AKH-abundant flies were more sensitive to starvation; females were found to be more resistant than males, regardless of the AKH level, probably due to higher body mass and higher amount of nutrients. However, in accordance with the level of all nutrients, that of AKH also gradually decreased with prolonged starvation
Keywords:
Adipokinetic hormone; Drosophila melanogaster; starvation
Available in the Digital Repository of University of South Bohemia.
Role of adipokinetic hormone during starvation in Drosophila
The role of adipokinetic hormone (Drome-AKH) in maintaining the levels of basic nutrients, under starvation conditions, was studied using Drosophila melanogaster mutants with AKH deficiency (Akh1) and ...
Green and blue infrastructure: means of reducing surface temperatures in the urban environment
SEDLÁČEK, Jan
2021 - English
Climate change may accelerate the Urban Heat Island (UHI) effect with many consequences for the well-being of human populations in cities. Green and blue infrastructures (GBI) are presented as a way to mitigate the UHI effect. In our study, the influence of GBI (primarily less studied types) on surface temperature (ST) was tested using a thermal camera. Various types of GBI (e. g. tree shade and lawn) and their combination were compared. Climate change may accelerate the Urban Heat Island (UHI) effect with many consequences for the well-being of human populations in cities. Green and blue infrastructures (GBI) are presented as a way to mitigate the UHI effect. In our study, the influence of GBI (primarily less studied types) on surface temperature (ST) was tested using a thermal camera. Various types of GBI (e. g. tree shade and lawn) and their combination were compared.
Keywords:
surface temperature; urban climate; microclimate; urban heat island; UHI; green infrastructure; blue infrastructure; greenery; vegetation; green roof; green wall fountain; well-being; tree shade; climate change; thermal amplitudes
Available in the Digital Repository of University of South Bohemia.
Green and blue infrastructure: means of reducing surface temperatures in the urban environment
Climate change may accelerate the Urban Heat Island (UHI) effect with many consequences for the well-being of human populations in cities. Green and blue infrastructures (GBI) are presented as a way ...
Unsuspected findings about phylogeny and ultrastructure of the enigmatic cyanobacterium Microcrocis geminata resulted in its epitypification and novel placement in Geminocystaceae
POKORNÝ, Jan
2024 - English
In present study the epitype originating from a large natural population of the type species M. geminata was established. The type material was characterised phylogenetically using cultivation-independent approach, morphologically and ultrastructurally. The phylogenetic placement in Geminocystaceae is supported by the unique parallel thylakoids. V této studii byl ustanoven epityp pocházející z velké přírodní populace typového druhu M. geminata. Typový materiál byl charakterizován fylogeneticky s použitím přístupu nezávislého na kultivaci, morfologicky a ultrastrukturně. Fylogenetická pozice v Geminocystaceae je podpořena unikátními paralelními tylakoidy.
Keywords:
sinice; Geminocystaceae; Merismopediaceae; fylogeneze; taxonomie; tylakoidy
Available in the Digital Repository of University of South Bohemia.
Unsuspected findings about phylogeny and ultrastructure of the enigmatic cyanobacterium Microcrocis geminata resulted in its epitypification and novel placement in Geminocystaceae
In present study the epitype originating from a large natural population of the type species M. geminata was established. The type material was characterised phylogenetically using ...
Fungal Bioremediation of Creosote-contaminated Soil
BYSS, Marius
2008 - English
The influence of two ligninolytic fungi (Pleurotus ostreatus and Irpex lacteus) on bioremediation of creosote-contaminated soil was studied. The thesis describes the polycyclic aromatic hydrocarbon concentration decrease during the laboratory-scale experiments and reveals the changes in the present soil microbial community under the influence of either fungus. The thesis compares different impact on PAH concentrations and soil microbial community depending on the fungus applied. The influence of two ligninolytic fungi (Pleurotus ostreatus and Irpex lacteus) on bioremediation of creosote-contaminated soil was studied. The thesis describes the polycyclic aromatic hydrocarbon concentration decrease during the laboratory-scale experiments and reveals the changes in the present soil microbial community under the influence of either fungus. The thesis compares different impact on PAH concentrations and soil microbial community depending on the fungus applied.
Available in the Digital Repository of University of South Bohemia.
Fungal Bioremediation of Creosote-contaminated Soil
The influence of two ligninolytic fungi (Pleurotus ostreatus and Irpex lacteus) on bioremediation of creosote-contaminated soil was studied. The thesis describes the polycyclic aromatic hydrocarbon ...
Newly emerged Batesian mimicry protects only unfamiliar prey
VESELÝ, Petr
2010 - English
The present RNDr. thesis comprises an original research paper testing the efficacy of signal of the Batesian mimic under various familiarity of the predator with the ancestral species from which the mimic evolved. Předložená rigorózní práce zahrnuje článek testující efektivitu výstražného signálu Batesovského mimika v případě, kdy predátor má search image kořisti, z níž Batesovský mimik vznikl.
Keywords:
aposematismus; výstražné zbarvení; Batesovské mimikry; search image
Available in the Digital Repository of University of South Bohemia.
Newly emerged Batesian mimicry protects only unfamiliar prey
The present RNDr. thesis comprises an original research paper testing the efficacy of signal of the Batesian mimic under various familiarity of the predator with the ancestral species from which the ...
Šestý nosorožec: taxonomické zhodnocení kriticky ohroženého severního tuponosého nosorožce
ROBOVSKÝ, Jan
2011 - English
The two forms of white rhinoceros; northern and southern, have had contrasting conservation histories. The Northern form, once fairly numerous is now critically endangered, while the southern form has recovered from a few individuals to a population of a few thousand. Since their last taxonomic assessment over three decades ago, new material and analytical techniques have become available, necessitating a review of available information and re-assessment of the taxonomy.Dental morphology and cranial anatomy clearly diagnosed the southern and northern forms. The differentia ion was well supported by dental metrics, cranial growth and craniometry, and corresponded with differences in post-cranial skeleton, external measurements and external features. No distinctive differences were found in the limited descriptions of their behavior and ecology. Fossil history indicated the antiquity of the genus, dating back at least to early Pliocene and evolution into a number of diagnosable forms. The fossil skulls examined fell outside the two extant forms in the craniometric analysis. Gene Předkládaná rigorózní práce se zabývá revizí nosorožce tuponosého. Na základě detailní morfologické a genetické revize se domníváme, že oba stávající poddruhy Ceratotherium simum simum a C. s. cottoni jsou výrazně odlišní a zaslouží si být povýšeni na druhovou úroveň (pokud přijmeme fylogenetický koncept druhu). Od společného předka se odštěpili před cca 1 mil. let.
Keywords:
Nosorožec tuponosý; Ceratotherium; fylogenetický koncept druhu; revize
Available in the Digital Repository of University of South Bohemia.
Šestý nosorožec: taxonomické zhodnocení kriticky ohroženého severního tuponosého nosorožce
The two forms of white rhinoceros; northern and southern, have had contrasting conservation histories. The Northern form, once fairly numerous is now critically endangered, while the southern form has ...
NRGL provides central access to information on grey literature produced in the Czech Republic in the fields of science, research and education. You can find more information about grey literature and NRGL at service web
Send your suggestions and comments to nusl@techlib.cz
Provider
Other bases