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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Parasitic bacteria Arsenophonus in honeybee and its parasite Varroa destructor
 Hejdánková, Sylvie ; Hubert, Jan (advisor) ; Smrž, Jaroslav (referee)
Arsenophonus is vertically and horizontally transmitted parasitic bacteria and strengthens its transfer through phenomenon called son killing. Arsenophonus has been detected in the arthropod hosts, insects, ticks and the garden spider Araneus diadematus. The aim of this study is detection parasitic bacteria Arsenophonus in honeybees and its parasite Varroa destructor. We find out that bacteria Arsenophonus is present in both hosts and it is identified as Arsenophonus nasoniae. Detection of bacteria Arsenophonus is discovered for the first time in Varroa destructor mites. We proved that the frequency of bacteria Arsenophonus in mites Varroa destructor is significantly higher than in honeybees. This study shows that the mite Varroa destructor could act as a vector for transmission parasitic bacteria Arsenophonus among honeybees. Results of this study could lead to the future application of Arsenophonus as a biological control for the mite Varroa destructor.
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Interactions "symbiotic" or "parasitic" bacteria Cardinium and Wolbachia with mites (Acari)
 Hejdánková, Sylvie ; Hubert, Jan (advisor) ; Smrž, Jaroslav (referee)
The thesis reviews known information and findings describing the interactions of bacteria Candidatus Cardinium hertigii (Sphingobacteriales: Flexibacteraceae) and Wolbachia pipientis (Rickettsiales: Rickettsiaceae) with mites (Acari). Both bacteria are known as symbionts or reproductive parasites and has been found in many species of arthropods. Here, the morphological characterization and localization of bacteria in their hosts and ecological interactions are revised and described. The main known interactions between these bacteria and mites lead to cytopasmic incompatibility, parthenogenesis, feminization and hybrid breakdown. The mites can be infected by both bacteria (Cardinium and Wolbachia), i. e. double infections, or by several strains of bacteria, i. e. multiple infections. The possible aplication of symbiotic/parasitic bacteria in the control of pest mites is discussed. The studied bacteria are suitable models for desription of the arthropod bacterial interactions.
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