Rigorous theses

Rigorous theses 15,500 records found  beginprevious15384 - 15393nextend  jump to record: Search took 0.01 seconds. 
New view on the age-specificity of pig Cryptosporidium by species-specific primers for distinguishing Cryptosporidium suis and Cryptosporidium pig genotype II
JENÍKOVÁ, Martina
Two species of Cryptosporidium are routinely found in pigs: Cryptosporidium suis and Cryptosporidium pig genotype II. Identification of Cryptosporidium species and genotypes currently relies on molecular methods such as polymerase chain reaction (PCR) followed by restriction fragment lenght polymorphism (RFLP) or gene sequencing. However their applications are limited in identification of mixed infections. To overcome this problem, novel species specific primers were designed and tested in this study.
Larval and adult seed consumption affected by the degree of food specialization in Amara (Coleoptera: Carabidae)
KLIMEŠ, Petr
This is the first study in which seed consumption is assessed for all larval instars and adults of ground beetles. Three species of the genus Amara were examined. Larvae of all three instars and adults were fed seeds of three plant species Stellaria media, Capsella bursa-pastoris and Taraxacum officinale in a laboratory no-choice experiment. In general, larvae showed greater food specialization and the daily specific seed consumption was comparable or even higher in larval than in adult stage. Results suggest that also carabid larvae may be very important consumers of weed seed in the field.
Diet composition of Common Kestrels Falco tinnunculus and Long-eared Owls Asio otus coexisting in an urban environment
LÖVY, Matěj
We studied dietary composition of urban populations of Common Kestrels (Falco tinnunculus) and Long-eared Owls (Asio otus) under fluctuating vole abundance. We tested hypotheses that the proportion of alternative prey in the diet increase with decreasing vole abundance throughout the years and that alternative prey differ between raptors due to different daily activities and/or hunting techniques. Finally, we tested whether the proportion of voles in the diet is influenced by the nest position within the city.
Effect of pH on the denitrifying enzyme activity in pasture soils in relation to the intrinsic differences in denitrifier communities
ČUHEL, Jiří
The effects of pH on denitrifying enzyme activity (DEA) and on the ratio of the denitrification products, N2O and N2, were determined in three pasture soils differing in cattle impact. The linkage between intrinsic differences in the denitrifying communities and pH effects on relative N2O production was also assessed. The soils were therefore analyzed for DEA and N2O production over a range of pH values and for the kinetic constants of NO3- and N2O reductions.
Relation of Pleurocapsa cuprea Hansgirg to the genus Hildenbrandia (Rhodophyta)
CAISOVÁ, Lenka
Pleurocapsa cuprea has been originally described as a relatively common freshwater cyanobacteial species with specific habitat preferences. Due to the striking resemblance of some diagnostic features to the red algal genus Hildenbrandia, morphological, molecular as well as pigment analyses have been done to either confirm or disprove the relationship of Pleurocapsa cuprea to the Cyanobacteria.

Rigorous theses : 15,500 records found   beginprevious15384 - 15393nextend  jump to record:
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