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Parasitation of the European marine gobies (Gobiidae, Perciformes) by metazoan parasites
Slámová, Tereza ; Vukićová, Jasna (advisor) ; Mašová, Šárka (referee)
Gobiidae (Teleostei, Perciformes) is one of the most species-rich families of teleost fishes, comprising over 1,700 species currently recognized. They inhabit marine waters worldwide, with the exception of the Arctic and Antarctic regions, but also brackish and freshwater habitats. Mostly, they live inconspicuously on the bottom. They are usually small-sized, so they are suitable intermediate hosts in the transfer of parasites to larger fishes, or to birds and mammals. The main metazoan groups of parasites of gobies are Myxozoa, Monogenea, Digenea, Cestoda, Nematoda, Acanthocephala and Crustacea. Their life cycles and the known impact of parasites on fish physiology, fitness, behaviour and mortality are described. Additional effects on goby hosts such as the effect on reproduction and the effect on a female mate choice are mentioned, as well. The immunity response of fish to parasitation is briefly discussed. Finally, some special cases like parasitism in brackish and eutrophicated waters, and a difference in parasitation of gobies in protected and unprotected areas are discussed. Published works about parasitation of European marine gobies are scattered and usually are focussed on a single parasite species or group. The effects of a parasite on a goby are rarely described. Only some parts of...
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The role of Toxoplasma gondii on the expression of Major Urinary Proteins in the house mouse
Hladovcová, Denisa ; Stopka, Pavel (advisor) ; Hrdý, Ivan (referee)
Major Urinary Proteins (MUP) are pheromonal transmitters involved in chemical communication in rodents. Complexes of MUPs and ligands mediate information about genetical background of an individual and co-create individual scent profile. They play a significant role in kinship determination, the crucial factor in the choice of a mating partner. It is assumed that the MUP production is energetically demanding due to the pressure of sexual selection, and the transmitted signal is thus supposed to be honest. This theory hasn't yet been experimentally tested, neither was proven the effect of another intense selection pressure- a parasitic infection. In my thesis, I describe the effect of an infection of a parasite Toxoplasma gondii on MUP production. The results suggest that the production is altered in both sexes, the production decreasing in males to the level of male castrates (or the female level). Considering the results of more detailed analysis of the infection we assume that the energetical demands of the MUP production doesn't allow the production of ordinary amounts if MUPs during the first phase of the infection as the energy is primarily devoted to the infection control. The increased production in latter phase can be attributed to the importance of scent communication. Decreased levels of...
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Application of mass spectrometry methods for identification and localization of important molecules from parasitic helminths
Siegel, Tomáš ; Kašný, Martin (advisor) ; Harant, Karel (referee)
The thesis summarises the fundamental technological solutions, processes and principles of mass spectrometry with special focus on their use in parasitology. In the first part, the particular phases of processing of the biological sample by using mass spectrometry are defined - from ionisation to the evaluation of results. In the text, the various methodological approaches are presented mainly on the published examples concerning the identification of molecules from parasitic helminths, especially proteins of fasciolid flukes (e.g. Fasciola hepatica). The second part of the thesis comprises the methods of identification and localization of molecules by using mass spectrometry imaging and the use of this combined technique in experimental biology, parasitology, is discussed. There is also proposed the procedure including the combination of laser microdissection and mass spectrometry techniques which could be applied for identification and localisation of important proteins of the fluke Fascioloides magna.
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Role of true bugs in a lifetime of humans
CHALOUPKOVÁ, Věra
This bachelor thesis covers the theme of the role of true bugs in human life. The aim of this bachelor thesis is to create a brief research focusing on true bugs as human and livestock parasites, pests of crops cultivated by humans, their function in biological control, their use in laboratory research and in food, as well as their occurrence in literature, television programs, music and as an inspiration for artworks and various products
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Složení společenstev larválních stádií motolic (Digenea) u vybraných zástupců plicnatých plžů čeledi Planorbidae
VYHLÍDALOVÁ, Tereza
In the present study the species diversity, seasonal dynamics, composition of larval trematode communities and factors influencing their structure were studied in two species of planorbid gastropods (Gyraulus albus and Segmentina nitida) in typical eutrophic fishponds in South Bohemia, Czech Republic. The study significantly contributed to the present knowledge about the fauna of trematodes in small planorbids, provided evidence for validity of general rules affecting trematode community composition and structure and demonstrated the underestimated role of both snail species as first intermediate hosts for trematodes in the past.
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Secondary sexual ornaments and ectoparasites in the barn swallow (Hirundo rustica)
Wichová, Eliška ; Albrecht, Tomáš (advisor) ; Sedláček, Ondřej (referee)
Parasites could represent an important evolutionary driver and play an important role in a sexual selection. In the mate selection process, females use secondary sexual ornaments, which may reflect the parasite load and health condition of males. Females would benefit from choosing males with the most extravagant sexual characters, which indicate low levels of parasite infestation. A popular model species for sexual selection study is the barn swallow (Hirundo rustica). However there are no recent studies investigating the relationship between the level of the ectoparasitic infestation and the ornamentation of the barn swallow. Results of this thesis, based on analysis of ectoparasite load in 204 individuals show, that the level of infestation by feather mites is positively correlated with outermost tail feathers and the intensity of feather holes is negatively correlated with a breast coloration. The relationship between the abundance of ectoparasites and white tail spots was not found. The effect of ectoparasites on the survival of individuals or the nest initiation date was not observed. A possitive relationship between the individual seasonal change in feather mites infestation and brood size was detected. This implies a potential trade-off between the investments into parental care and defence...
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Application of mass spectrometry methods for identification and localization of important molecules from parasitic helminths
Siegel, Tomáš ; Kašný, Martin (advisor) ; Harant, Karel (referee)
The thesis summarises the fundamental technological solutions, processes and principles of mass spectrometry with special focus on their use in parasitology. In the first part, the particular phases of processing of the biological sample by using mass spectrometry are defined - from ionisation to the evaluation of results. In the text, the various methodological approaches are presented mainly on the published examples concerning the identification of molecules from parasitic helminths, especially proteins of fasciolid flukes (e.g. Fasciola hepatica). The second part of the thesis comprises the methods of identification and localization of molecules by using mass spectrometry imaging and the use of this combined technique in experimental biology, parasitology, is discussed. There is also proposed the procedure including the combination of laser microdissection and mass spectrometry techniques which could be applied for identification and localisation of important proteins of the fluke Fascioloides magna.
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Biogeography and host spectrum of twisted-wings (Strepsiptera)
Benda, Daniel ; Straka, Jakub (advisor) ; Malenovský, Igor (referee)
Twisted-wings (Strepsiptera) are an endoparazitic order of insects with cosmopolitan distribution, which are sister group of Coleoptera. There are 7 known host insect orders. As a group with relatively small number of species (almost 600) and cryptic way of life, Strepsiptera were usually overlooked by entomologists. Majority of publications about Strepsiptera deal simply with describtion of new species. For many taxa of basal families, the host group is unknown, because just free flying male has been collected and described. In contrary, only a female collected with host is known in some species. In derived families Xenidae and Stylopidae (parasitize Hymenoptera: Aculeata), there are known hosts in overwhelming majority of species. Many information about distribution of these groups can be extracted also from publications about hosts, where stylopized individuals are mentioned. Presented thesis summarizes the distribution of Strepsiptera at the level of families and genera. It also provides an assessment of the occurrens of Strepsiptera in different biogeographic regions with focus on their hosts. Keywords: Twisted-wings, Strepsiptera, distribution, parasites, host group, biogeography
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Parasitation of the European marine gobies (Gobiidae, Perciformes) by metazoan parasites
Slámová, Tereza ; Vukićová, Jasna (advisor) ; Mašová, Šárka (referee)
Gobiidae (Teleostei, Perciformes) is one of the most species-rich families of teleost fishes, comprising over 1,700 species currently recognized. They inhabit marine waters worldwide, with the exception of the Arctic and Antarctic regions, but also brackish and freshwater habitats. Mostly, they live inconspicuously on the bottom. They are usually small-sized, so they are suitable intermediate hosts in the transfer of parasites to larger fishes, or to birds and mammals. The main metazoan groups of parasites of gobies are Myxozoa, Monogenea, Digenea, Cestoda, Nematoda, Acanthocephala and Crustacea. Their life cycles and the known impact of parasites on fish physiology, fitness, behaviour and mortality are described. Additional effects on goby hosts such as the effect on reproduction and the effect on a female mate choice are mentioned, as well. The immunity response of fish to parasitation is briefly discussed. Finally, some special cases like parasitism in brackish and eutrophicated waters, and a difference in parasitation of gobies in protected and unprotected areas are discussed. Published works about parasitation of European marine gobies are scattered and usually are focussed on a single parasite species or group. The effects of a parasite on a goby are rarely described. Only some parts of...
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