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Important plants in terms of pollen for bee-keeping in the spring and early summer in the area of the protected landscape Šumava
ŠEMRO, Martin
Objective of the work was to identify with using pollen analysis botanical origin of bee pollens. Pollen analysis consisted in the distribution of samples to individual sub-samples . Samples were weighed and a part of them was dissolved in a solution of glycerin and water. Dissolved samples were viewed under a microscope. Pollen was removed by the beekeeper Mgr .Milan Trhlín with using a device called pollen catcher. The samples were collected in the year 2011 in the spring and early summer period from beehive location on the hill Lískovec, of the protected landscape Šumava 1,8 km west of city Volary, at a time of 25. march to 24. june. Another objective of the work was with using phytocenology study, in the distance 1,5 km from the beehive habitat, evaluate the structure of plant association from the point of nutrition honeybees. The work also includes evaluation preference bees for individual plant species. There were detected, that bees prefer the plants that provide the best digest pollen and the plants which grows up to 1,5 km from beehive habitat. There were distinguised 32 types of pollen grains.
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Important plants in terms of pollen for bee-keeping in the summer and late summer in the area of the protected landscape Šumava
PAŠKOVÁ, Dagmar
Objective of the work was to identify botanical origin of bee pollens collected from Protected Landscape area Šumava near the village of Volary and evaluate the importance of individual plant species in the diet of honey bees. The work also includes statistical analysis which examined how many subscriptions to a plant taxa occurred and what share has a certain plant taxon in the total pollen clutch. There were counted 18 different pollen taxa of bee pollens collected during summer and late summer of 2011. The work is complemented by photographs of selected pollen grains.
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Important plants in terms of pollen for bee-keeping in the summer and late summer aspect in the northern area of the landscape Blanský les
PETROVÁ, Jana
Objective of the work was to identify botanical origin of bee pollens collected from the northern territory of Protected Landscape Area Blanský les by pollen analysis and assess the importance of individual plant species in the diet of honey bee in the range up to 2 km from the beehive. The work also includes statistical analysis, which examined how rich is the preference of bees in the collection of bee pollens, as well as the occuring of plant taxa in the proportion of samples and what is the similarity of sampling and individual plant taxa in terms of preference of bees. There were counted 23 766 different pollen types and plant taxa of bee pollens collected during summer and late summer between 2010 and 2011. The work is complemented by photographs of selected pollen grains.
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Occurrence and prevalence of Nosema spp. in European honey bee (Apis mellifera)
ANDERLOVÁ, Jana
Nosemosis is a serious disease of bees caused by microsporidia Nosema apis and Nosema ceranae. Both species are widely spread around the world and in the Czech Republic. The aim of this thesis was to evaluate the incidence and prevalence of Nosema spp., describe the species variability and assess the influence of the season. PCR method amplifying part of the gene encoding the small ribosomal subunit rRNA was used to identify the species of Nosema spp. A total 77 samples originated from 17 farmers were examined Out of them, 71% (55 samples) were positive for the presence of Nosema spp. Samples were collected in five seasons in 2011?2012. Both N. apis, and N. ceranae were detected in all breeds. In 2011, N. apis was detected as causative agent of nosemosis except one sample, where the mixed infection was detected. In 2012, N. ceranae was observed in mono- or mixed infections. Currently monoinfections of N. apis were not detected in 2012. Generally, the highest occurrence was detected in the autumn and winter months.
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Effect of \kur{Nosema apis} and \kur{Nosema ceranae} on colonyof bees
ANDERLOVÁ, Jana
The work is aimed at assessing the influence of Nosema apis and Nosema ceranae on the hive. The literature contains only a limited degree of information about Nosema disease, which caused by both protozoa, that?s why the main aim of this work is to gather all available technical information from various sources, to compare and evaluate them. The result of evaluating the information gathered then is how this disease affects bee behavior, which has implications for breeding bees. The content of this work is first the general characteristics of Nosema apis and Nosema ceranae, their distribution, reproduction and development. A description Nosema disease, such as preventive and disinfecting measures to prezent it and how you can treat already established disease. The findings described by ptrotozoa Nosema apis imply that this protozoa is explored in the vast majority. Nosema ceranae is a recently discovered species and its research is not yet complete. Finally, the thesis summarizes the most important effects of Nosema apis and Nosema ceranae on the hive. These factors include, fluctuating number of individuals in a hive, honey yields lower, in some cases death of the colony and it also changed the behavior of honey bees.
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