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Spontaneous directional preferences in \kur{Eublepharis macularius}: Laterality and cardinal direction preferences
VOTRUBOVÁ, Kateřina
Despite increasing numbers of studies on orientation, magnetoreception and laterality, there is only few of them focused on reptiles. This thesis points out this issue and tries to come up with a new infromation about orientation in reptiles. Practical part is aimed at laterality in leopard gecko (Eublepharis macularius) by testing it in T-maze. It also focuses on potential influence of the Earth's magnetic field on orientation in T-maze and geckos ability to perceive this field. Additionally, this thesis include some general evaluation of gecko's etology throughout the experiment.
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Ověření magnetické orientace u savců
KOČANDRLOVÁ, Barbora
Thesis is monitoring body orientation during the day cycle, with a special focus on the body orientation during resting and grazing cattle. Environmental conditions including the Earth's magnetic field which affect the animal orientation have been evaluated. Body orientation of the selected individuals was determined by compass, directly every half hour at the site. In total 24 cows in 2 herds were monitored. In every herd were chosen 12 easily recognizable individuals. Monitoring took place 7 days in September 2016. About weather conditions (wind, rain, sun, temperature) and resting of the individuals was kept an account, which would affect the cattle orientation. This study could not confirm the theory of the N-S cattle orientation by magnetic field and therefore can not confirm or disprove the influence of the power line to the cattle orientation. Even at rest or grazing cattle the theory of the N-S orientation could not be confirmed.
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Magnetic orientation of chosen dog breeds
Konderla, Lukáš ; Nováková, Petra (advisor) ; Mrkvičková Kořanová, Diana (referee)
Theoretical part of this thesis deals at first with a dog breed Patterdale Terrier. There is also mentioned the beginning of the history of the breed, it´s characteristic description and formally recognized standard. Part of the bachelor is the economic analysis, which is made subjectively and could serve to possible new Patterdale Terrie breeders. This breed was subsequently used as the object of studying at the practical section. Furthermore, the work deals with the issue of magnetism, namely the phenomenon called magnetoreception. Are outlined here the main hypothesis of mechanisms functioning of magnetoreception.
The practical part of the bachelor is aimed at the body orientation monitoring of chosen dogs at water intake. Statistical analysis supported the hypothesis of North-South direction preference by different animals in various activities. Dogs were turning their bodies in a range of 170°-210°.
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Fluctuation of Earth's magnetic field and its influence on dogs
Beránková, Kateřina ; Nováková, Petra (advisor) ; Mrkvičková Kořanová, Diana (referee)
Fluctuation of Earth's magnetic field and its influence on dogs
Kateřina Beránková
The aim of the bachelor thesis was monitoring and documenting the orientation selected breeds of dogs when feeding, depending on fluctuation of the Earth's magnetic field.
The theoretical part of this thesis deals with a summary of information about one of the three selected breeds of dogs (deutscher boxer), that was just like the rest of breeds used as a model animal for the practical part. In the next part is introduced magnetoreception, therefore, the ability of animals to perceive the Earth's magnetic field and its hypothetical models of functioning. There is also described magnetic orientation and its other forms which are magnetic map, magnetic compass and magnetic alignment, which is spontaneous orientation of the body axis of the animal in certain direction, for example, in the North-South axis by influence of the Earth's magnetic field. The practical part of the thesis mainly deals with exploring the influence of the Earth's magnetic field on the orientation of the head and of the body axis, when dogs are feeding. Selected breeds of dogs were Deutscher boxer, Bernese mountain dog, Chodsky dog and hybrid of Labrador retriever and Siberian husky. Statistical analysis showed North-South direction preference only in the case of the breed Chodsky dog. For other breeds of dogs, East-West orientation was dominated.
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Influence of magnetic weather on dogs
Junas, Tomáš ; Nováková, Petra (advisor) ; Mrkvičková Kořanová, Diana (referee)
The bachelor thesis deals with the theme of magnetism, if you like magnetic influence of weather on dogs. The first part is devoted to a literature review on the issue of magnetism and researched breeds. The practical part contains the research on the influence of magnetic field on the orientation of the dog in the water intake. Three dogs were studied using a photo-trap. In all three dogs was statistically found preference of the south-west direction, which does not correspond to previous research. The cause of the deviations could be e.g. high-voltage lines, the fluctuation of the earth's magnetic field, or a local anomaly of the magnetic field. Economic analysis of breeding the dog, it was found that the breeding of these breeds cannot be considered as gainful activity.
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Magnetic orientation in the bank vole (\kur{Myodes glareolus})
NOVÁKOVÁ, Monika
The magnetic orientation was established in several species of rodents, but the mechanism of its perception has not been determined. Aim of this work was to verify magnetic sense in the bank vole (Myodes glareolus) and try to solve the nature of its magnetoreception in tests carried out in total darkness and when the horizontal component was reversed and the vertical component was inverted. A spontaneous directional preference in the magnetic field was tested in circular arena.
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