|
|
Selekční kritéria k upevnění varroatolerance včely medonosné
Rod, Jan
Main purpose of this thesis is to summarize knowledge in the field of suppressing the varroosis and to compare contemporary methods and chemicals. Then to describe behavioural patterns of varroatolerant bees, their mutual relations and their importance for selection of varroatolerant honey-bee colonies. In the thesis is described relation between varroosis and the viruses of honey bee and a possible consequences of this relation for the honey bee population. Theoretical knowledge is supported by the experiments with the new methods of application of oxalic acid. The object of these experiments was to determine the efficiency of oxalic acid in control of the growth of the Varroa mite and it’s effect on the brood. Then the varroasensitive hygiene of honey bee colonies was tested. The results show that methods for selecting varroatolerant honey bee colonies is still not finished for praxis, therefore, collapses have to be prevented by application of varroacids.
|
|
|
Selekční kritéria k upevnění varroatolerance včely medonosné
Volná, Jitka
This thesis focuses on the study of varroatolerance of honeybees. The first, theoretical part engages in the compilation of findings in varroatolerance of honeybees from previously published scientific papers. The second, practical part focuses on the evaluation of the data obtained from the winter and post-treatment fallout of Varroa destructor from the years 2011 to 2015, hygienic behavior from the years 2002 to 2003 and from 2007 to 2015 in the AF Mendelu apiary and varroasensitive hygiene. The results confirm that monitoring the fallout, the selection to improve hygienic behavior of bees and the monitoring mite reproduction in the cells of the comb, has its own importance for increasing varroatolerance of honeybees. In the future it is necessary to examine this issue further and refine the testing methodology of mite reproduction for the Czech honeybee population.
|
|
|
New trends in prevention and negotiation of varroosis
LUKÁŠKOVÁ, Jana
Varroa destructor, in Czech language known as kleštík včelí, is a parasitic mite (of eastern bee and honeybee) which causes the disease called varroasis. Kleštík is like a black passenger on the body of bees and drones, which commonly penetrate foreign hives, and because of that they can be considered the main vector of parasite. In the Czech Republic we fight this parasite using methods every since its discovery in the early 80s of the 20th century. Some methods are defined by the Veterinary Institute in the Czech Republic and the others were disovered by the beekeepers themselves. The main purpose of this thesis was to determine what are current methods to suppress or to completely obliterate the infection caused by Varroa destructor. What methods have proved to be most effective, and what new methods were invented from the time of its discovery. I conducted a field experiment bee hives belonging to beekeeping organizations Trhové Sviny during the 2015 and the 2016. The practical part of my research ( i.e. occurrence and also the review of varroasis disease treatment) had little effect on normal activities of beekeepers. The process of Varroa destructor presence, its treatment and the methods of treatment researched. Based on the collected samples sent to Veterinary Administration for testing to find out whether are the Varroa counter measures effective or not. The conclusion of my reasearch ist he unificated treatment and detection of Varroa are of the main importance. That goes not only for the beekeeping associations but also by unregistered beekeepers. Because the amount of bee colonies here in the Czech Republic is huge, the use of alternative treatment and suppresing procedures as well as the intentional breeding for resistance against Varroa are rather unrealistic, the only viable option fort he moment , is to follow Veterinary Services guidelines.
|
|
| |
|
| |
|
| |
|
| |
|
| |
guest ::
