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Effect of diet on occurrence of gastrointestinal parasites in domestic animals (dogs, cats, hedgehogs, ferrets).
FILCOVÁ, Kristýna
The literature review, which is the part of the diploma thesis, contains a summary of the most widespread methods of pet food. It also contains a summary of gastrointestinal parasites in dogs, cats, hedgehogs and ferrets, and the methods of their diagnostics and therapy. The practical part of my thesis focused on collecting samples of pet excrements in the course of 2021 2023, which were then examined fot the presence of parasites using the standard coprological flotation method. In the course of the above-mentioned years, the questionnares were also provided to the pets owners, which the pet owners filled out. The questionnaire contained questions about the methods of pet food, methods of prevention used against gastrointestinal parasites, possible infection of pets with gastrointestinal parasites and the therapy used, and questions about the knowledge of this issue among pet owners. The number of infections of pets based on methods of pet food, methods of prevention used with individual methods of pet food, occurrence of the endoparasites with the prevention used, the opinion on the effectiveness of the prevention method and the opinion on the possibility to get infected from the infected pet were evaluated as well. The presence of infection with gastrointestinal parasites did not differ in individual categories of pet food. I did not prove that pets fed raw food were infected with parasites from this food. The thesis proves that pet fed heat-treated food, which is not a source of infection, are often infected with parasites. Infection from environment is a source of infection more often than feeding raw food.
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Colonisation of islands by the insectivorous mammals
Matějů, Petr ; Černá Bolfíková, Barbora (advisor) ; Kristýna, Kristýna (referee)
Biological invasions are a serious problem worldwide. Besides the natural colonizations mediated by tectonic movements or formation of a land bridge connection, there are also the artificial ones. Humans can deliberately or undeliberately translocate species across ecosystems. Recently, mainly because of the buisness and tourism there is a dramatical increase in human-mediated biological invasions. Many authors, who discussed invasions in the past, were focused on rodents. Despite its severe impact on the ecosystems the topic of insectivorous mammals remains relatively untouched by scientists so far. Practical part of this thesis is focused on the Northern white-breasted hedgehog (Erinaceus roumanicus) and his dispersal in the Mediterranean area. Mitochondrial control region sequences of 28 samples were analyzed and compared to already published data from GenBank. Discussion was made through phylogenetical analysis. Main topics of discussion were focused on a possible contemporaneity and a course of transfer of the gene flow. Most of the samples showed haplotype similarity with individuals occupying the closest mainland. On the other hand samples from Skyros did not go with the trend. They matched with haplotype from Crete.
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