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The importance of production and quality of pollen in the summer and late summer for the bee colonies (case studies from around of the village Volary - CHKO Šumava)
PETROVÁ, Jana
Objective of the work was to identify with using pollen analysis botanical origin of bee-colected pollens collected from beehive station Lískovec near the town Volary in the Protected Landscape Area of Šumava. Bee-collected pollens were collected once a week from one honey bee colony with using of a pollen trap. The time of collection was summer and late summer period from 22 June to 11 September 2010. Bee-collected pollens were dried, categorized by color, weighed and observed using the microscope. Pollen grains were determined by the number and type of apertures, shape, sculpture and size. Size of pollen grains was measured on at least 50 pollen grains of one type. In each microscopic slide were counted at least 500 pollen grains. The proportion of plant species in the sample was expressed as a percentage and the importace of plant species was evaluated in the diet of honey bees in the area of interest. Selected samples of bee-collected pollens from beehive station Lískovec and also from beehive station Dobčice were investigated for protein content and amino acid composition. Pollen belonging to Polemonium coeruleum, Trifolium pratense and Trifolium repens was evaluated as an important source of protein and amino acids for honey bees. The concentration of essential amino acids expressed as percentages of total amount of amino acids did not differ significantly between samples of bee-collected pollen. Another objective of the work was to compare the results from the area of interest with the results processed in the similar study from beehive station Dobčice in the northern area of the landscape Blanský les. The work also includes statistical evaluation of dominance, frequency, Shannon-Wiener index of diversity and variability between samples and species. 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 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 spring and early summer in the northern area of the landscape Blanský les
ZÍDKOVÁ, Michaela
Bachelor work dealt with determination of important plants for bee-keeping from pollen loads and the importance of pollen in honeybee nourishment. Pollen loads were collected from one honeybee colony, which stands to the south from the village of Dobčice in Blanský les Protected Landscape Area. Natural reservations of Chrášťanský vrch and Vysoká Běta are in the distance of flying range from the colony. According to the pollen grains were detected taxons of Blanský les Protected Landscape Area?s flora in native preparates and estimated its importance from the point of view of honeybee nourishment in the stated region. The attention was given to the structure of vegetation in honeybee colony surroundings and the occurrence of important biotopes of pollen plants.
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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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Function of honey-bee (Apis mellifera) in see industry of field crops.
PŠENIČKOVÁ, Zuzana
In this dissertation I am trying to point out the importance of the honeybee in the pollination of plants and the connection between the plant and the honeybee. The honeybee is essential and indispensable part of agricultural production that increase in the hectare production. It is also importat in forests, fields and in orchards. In the introduction there is a telling about bee colony and alternative ways of pollinate. In this dissertation I outline economic and ecological features of beekeeping and problems that beekeepers have to solve, some grants from the European Union that help to our beekeepers. In conclusion there are described some problems and different opinions for geneticaly modified plants and their influence for the honeybee.
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Carnal stratification in colony of bees
KOLÁŘ, Petr
This thesis will address gender stratification colonies. In addition, there will outline the issues concerning the origins and development of hives or internal and external environmental laws in the colony. In this work will also be mention of the relations in the colony, the division of labor and communication conditional chemicals and the number of individuals in the colony. Furthermore, there is one part of this work will be devoted to a major bee species on Earth. The aim of the work will prove that every bee has a function of sex.
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