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Rodent trypanosomes: occurrence, development and transmission
Valsová, Iveta ; Votýpka, Jan (advisor) ; Kodym, Petr (referee)
Trypanosomes of the subgenus Herpetosoma are considered highly host-specific and nonpathogenic to their hosts. They are commonly found in rodents (and some insectivores), and fleas are believed to be their vectors. Around 50 trypanosome species have gradually been assigned to this subgenus, mainly based on the morphology of blood forms and their host specificity. However, due to the application of molecular methods, this number is beginning to increase. This thesis aims to investigate the prevalence and evolution of trypanosomes of the subgenus Herpetosoma in different mammalian hosts and their fleas in the Czech Republic. In total, samples from 17 mammalian species (mainly rodents) were tested for the presence of trypanosomes; only three species were found: with 1% prevalence Trypanosoma in the bank vole (Clethrionomys glareolus) similar to T. microti (typical for the field vole, Microtus agrestis), with 4% prevalence T. grosi in field mice (Apodemus spp.), and with 40% prevalence Trypanosoma sp. B08-471 in the European edible dormice (Glis glis). This trypanosome species was also detected in the flea Ceratophyllus (Monopsyllus) sciurorum, which is a typical ectoparasite of edible dormice. In fleas, the development of trypanosomes and also commonly occurring monoxenous trypanosomatids of the genus...
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