This diploma thesis was focused on the study of lysozyme and lysozyme-like proteins, either of similar function (antibacterial) or molecular weight (14 - 17 kDa), of synanthropic acaroid mites. In general, animals utilize lysozymes for defensive (antimicrobial) or digestive purposes but also as a digestive enzyme. Some chitinases or other enzymes that act similarly to lysozyme can be utilized for similar purposes. Chitinases belong to house dust mite allergens. One of major mite are historically named lysozyme-like proteins which name relates to their size similar to lysozyme. Bacteriolytic activity has also 14.5 kDa (UniprotKB Q8MWR6) protein. The species selected for the study were domestic mites Dermatophagoides farinae, D. pteronyssinus and Lepidoglyphus destructor. Presence of lysozyme was detected by direct detection with polyclonal antibody using immunohistochemistry and dot blots. Immunohistochemistry proved presence of lysozyme epitopes in the feces of D. farinae, D pteronyssinus a L. destructor. Dot blot analysis demonstrated the presence of imunoreactivity of antibody in spent growth medium extracts (SGME) of all three species. This implies that lysozyme is synthesized in the midgut. The presence of lysozyme and lysozyme-like proteins was proved using 2D electrophoresis and MALDI TOF/TOF...

Aim of this study was to assess distribution and abundance of common synanthropic species of birds (House sparrow, Tree sparrow, Eurasian collared dove and Blackbird) in area of the city České Budějovice in the Czech Republic in autumn and winter. Habitat preferences of these species were analysed. Study also determined influence of the certain characteristics of urban vegetation on their occupation by both species of sparrows.