|
|
Laboratorní test disasortativního párování u hraboše polního - literární rešerše
BÍLKOVÁ, Pavlína
Petrásková P. (2019): Laboratorní test disasortativního párování u hraboše polního - literární rešerše [Laboratory test of disassortative pairing in the common vole - literature search. Bc. Thesis in Czech]-49 pp. , Faculty of Sciences, University of South Bohemia, České Budějovice, Czech Republic. The aim of this work is to use the literature research to map current knowledge about the effect of odour preference on reproductive success in mammals focusing on voles. As assortative pairing is referred to each form of non-random pairing. Most of the time is meant a situation in which individuals who have similar phenotypes pair more often. The opposite is the situation where individuals with different phenotypes pair more often. This is sometimes referred to as negative assortative or disassortative pairing. In particular, this study deals with non-random pairing among to body odour . These are mainly linked to genes for the major histocompatibility complex (MHC) in animals, which play a key role in the immune system. MHC gene products found in various body secretions form the specific odour of each individual. In the research part were searched question for following questions: How is the breeding partner chosen? Is Assortative or Disassortative Pairing More Frequent? What information does body odour convey? What channels is the odour information transmitted and received? How is odour preference testing solved in laboratory conditions? In the practical part, a plan of the experiment is presented in which T-labyrinth will play the main role in determining the odour preference. Under laboratory conditions, voles will have plenty of time to complete the process
|
|
|
Isosporan oocysts in the faeces of bank voles (Myodes glareolus; Arvicolinae, Rodentia): real parasites, or pseudoparasites?
TREFANCOVÁ, Aneta
This study concerns clarification of the origin of infections of arvicoline rodents with Isospora spp. based on three different approaches: phylogenetic analyses of three genes (18S rRNA, COI and COIII), morphological and morphometrical analyses, and experimental infection. Field collections, parasitological examinations of samples, microscopy, DNA extraction, PCR, and computational analyses were employed during the course of this study.
|
|
|
Diet composition of Common Kestrels Falco tinnunculus and Long-eared Owls Asio otus coexisting in an urban environment
LÖVY, Matěj
We studied dietary composition of urban populations of Common Kestrels (Falco tinnunculus) and Long-eared Owls (Asio otus) under fluctuating vole abundance. We tested hypotheses that the proportion of alternative prey in the diet increase with decreasing vole abundance throughout the years and that alternative prey differ between raptors due to different daily activities and/or hunting techniques. Finally, we tested whether the proportion of voles in the diet is influenced by the nest position within the city.
|
|
| |
guest ::
