Global ETD Search

1	Stálost objektu jako metoda pro výzkum vyšších kognitivních funkcí primátů / Object permanence as a method to study higher cognitive functions of primates Englerová, Kateřina January 2014 (has links) Object permanence is a cognitive ability, which allows individual to realize the existence of an object even it is not directly accessible to its senses. This ability is essential for successful using of complex cognitive operations. Object permanence is qualitatively and gradually change throughout the development of a child. Congruently, it is not developed to the same level in various species of animals. The aim of this study is to study object permanence in naive rhesus monkeys (Macaca mulatta), because there is still some uncertainty about the development of this ability in macaques. Our results show that the naive subjects do not have the highest stage of object permanence (and they do not use representative strategy to solve the tasks), however, other results of our team suggest that more experienced individuals are able to achieve the highest stage under certain circumstances. We show that experimental design used to test object permanence can be modified and used also for studying of other cognitive abilities. We test the preferences of macaque monkeys toward novel non-food stimuli. The reactions of different species of animals can vary. The reactions depend on the type of stimuli (food or non-food), but also on the ecology and ethology of the species. Age, sex and personality of the...
2	Explorace, neofobie a potravní konzervatismus u sýkor / Exploration, neophobia and dietary conservatism in tits (Paridae) Beranová, Eliška January 2012 (has links) Neophobia and exploratory behaviour are two processes applied in great measure in birds' reactions towards novel stimuli. The specific demonstration of these two processes may differ between different species of birds as well as within them. We compared neophobia and exploratory behaviour in two species of tits (Paridae). Adult Great tits (Parus major) and Blue tits (Cyanistes caeruleus) did not differ neither in exploring novel environment and novel object nor in neophobia towards novel object near food. We have found great differences between juveniles of these two species. Juvenile Blue tits were more neophobic towards both novel objects. Age, sex and personality affected some differences within tested species. We tested whether there exist any differences in reactions towards novel food between and within species. We used red painted mealworm (larvae of Tenebrio molitor), house cricket (Acheta domestica) and aposematic bug (Pyrrhocoris apterus) as novel food. Adult wild-caught tits with plentiful experience with various feeds did not differ in reaction towards these types of novel food. In contrast hand-reared juvenile tits differed quite a lot. Juvenile Blue tits were more neophobic than juvenile Great tits towards all three types of novel food. We found dieraty conservatism, phenomenon...
3	Boldness Behavior and Chronic Stress in Free-Ranging, Urban Coyotes (<i>Canis latrans</i>) Robertson, Katie E. January 2018 (has links) No description available. Wildlife Management Animals Ecology coyote urbanization boldness stress behavior flight initiation distance novel object test hair cortisol Chicago urban wildlife bold-shy neophobia neophilia health sarcoptic mange roads social status age suburban Illinois

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