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Toxic Relationships
Rausová, Terezie ; Rodek,, Václav (referee) ; Rathouský, Luděk (advisor)
In my work I have been working for some time with topics such as anthropocene, parasitism, symbiosis and environmental anxiety. I search for and capture the socio-ecological situation. I ironize the self-destructive behavior of modern people in terms of endangering basic life functions and warn of poisoning the environment, which plays an irreplaceable role in the lives of future generations. My source of inspiration is science fiction stories, which often deal with apocalyptic vision. The starting medium for me throughout the study is painting, which I build on strong and fluorescent colors. Formally, the paintings are made of acrylic paint and spray on canvas. The output of the bachelor's thesis is a series of large-format paintings, supplemented by smaller formats, which should attract with their neon colors and at first glance draw the viewer into a toxic zone. The installation should worry the viewer and not leave you cold in connection with the position of man within the social and natural system.
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The Effect of Presence and Abundance of Parasites (Nomada, Stylops) on the Host Species Population (Hymenoptera: Andrena) at the Level of Entire Communities
Bureš, Vít ; Straka, Jakub (advisor) ; Libra, Martin (referee)
Bees (Anthophila) play a crucial role as pollinators, vital for maintaining biodiversity in ecosystems. However, the decline in pollinator populations in recent years raises concerns about ecosystem stability. This study investigates the impact of parasitism on host bee populations of the genus Andrena as a potential factor influencing the decline of insects. Additionally, it examines populations of parasites of the genera Stylops and Nomada as indicators of host population status. Bees of the genus Andrena are abundant in the western Palearctic and are commonly parasited by Stylops and Nomada. Leveraging a large dataset from Europe, this study uses abundance data to explore the influence of abiotic and biotic factors on the parasitization rates of host Andrena bees. Specifically, the effects of abiotic factors such as altitude, habitat type, annual rainfall, and average temperature on the parasitization rates by both parasite types has not been confirmed. The results indicate that within small geographical units (sites), larger populations of host Andrena bees are more heavily parasitized by Stylops compared to smaller populations, while this trend does not hold true for Nomada. Interestingly, this study reveals that Stylops and Nomada coexist within the same host populations without competing for...
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Popularization of the manipulation hypothesis
BIERLOVÁ, Tereza
This bachelor thesis deals with popularization of manipulation hypothesis among children attending elementary school and general audience in the form of short stories. In the literary part were chosen ten examples of manipulation by a parasite from scientific literature. In the research part was examined the topic of manipulation theory in the current biological textbooks for elementary school. Subsequently were created five short stories of manipulation by a parasite to help the reader understand the relationship in the examples in an easy way.
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Population Genetics of Parasites and Their Arthropod Hosts
Bezányiová, Kateřina ; Straka, Jakub (advisor) ; Votýpka, Jan (referee)
Arthropoda are currently the largest metazoan phylum. Given that organisms with parasitic lifestyle are thought to comprise the majority of existing species, it's easy to imagine an immense diversity of parasites interacts with arthropods. However, in comparison to organisms parasitising vertebrates, parasites of arthropods are direly understudied despite their abundance, importance, and potential usefulness. Amongst other things, parasites can be used as tools allowing the inference of information on host life history, ecology, and past events the host species have experienced. Population genetic structure of parasites and other symbionts may reflect these traits and events due to their close relationship with the host. Even though parasites comprise a diverse assemblage of taxa, it's possible to identify convergent patterns in their biology. Models predicting congruent population genetic co- structuring can be thus based on a few traits such as host specificity, life cycle complexity or parasite and/or host dispersal. In some cases, the parasite may provide better resolution of population structure than the host itself, serving as a proxy that may be used to direct conservation programmes of both the host and parasite, as has already been done with parasites of vertebrates. This thesis summarises known...
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Toxic Relationships
Rausová, Terezie ; Rodek,, Václav (referee) ; Rathouský, Luděk (advisor)
In my work I have been working for some time with topics such as anthropocene, parasitism, symbiosis and environmental anxiety. I search for and capture the socio-ecological situation. I ironize the self-destructive behavior of modern people in terms of endangering basic life functions and warn of poisoning the environment, which plays an irreplaceable role in the lives of future generations. My source of inspiration is science fiction stories, which often deal with apocalyptic vision. The starting medium for me throughout the study is painting, which I build on strong and fluorescent colors. Formally, the paintings are made of acrylic paint and spray on canvas. The output of the bachelor's thesis is a series of large-format paintings, supplemented by smaller formats, which should attract with their neon colors and at first glance draw the viewer into a toxic zone. The installation should worry the viewer and not leave you cold in connection with the position of man within the social and natural system.
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Teaching of parasitism in elementary and secondary schools
Čiháková, Kateřina ; Mourek, Jan (advisor) ; Ehler, Edvard (referee)
Main aim of this master thesis is to map the situation of parasitism teaching in elementary and grammar schools. Thats why it contains analysis of reachable elementary and grammar school textbooks - it informs about various kinds of rating the textbooks, which can help both - current and future teachers of biology - to better know and identify reachable textbooks and choose the right ones for the parasitism teaching. It also contains test results of students parasitism knowledge, which are generally very good. Anyway they should learn much more about parazite's manipulation of their host behavior. Other part of my master thesis shows the results of grammar school teachers-filled questionnaires. All questionnaire results (teachers' and students') show that there can be an improvement in parasitism teaching. In next section you can find the Framework Education Programme analysis, own educational programme draft - workbooks, didactic games and powerpoint presentations. Thanks to the realization of teaching the parazites manipulation of their host behavior I found out that students' interest in the topic is quite big so it would be a shame not to share this newly explored area of parasitism with them. Key words: parasite, host, manipulation hypothesis, questionnaires, parasitism teaching
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The role of trehalose in mycorrhizal associations
Šoch, Jan ; Ponert, Jan (advisor) ; Hála, Michal (referee)
Mycorrhizal symbiosis is a widely spread phenomenon in nature. A translocation of nutrients occurs between symbionts with disaccharide trehalose playing a key role in the process. However, this saccharide fulfils many important roles in metabolism of fungi and plants. Fungi use trehalose mainly as storage and transport saccharide. On the other hand, trehalose occurs in extremely low amounts in plants where it acts as a signal molecule. Thus it is likely that the saccharide could be used by the fungus to manipulate plant metabolism on a physical interface between symbionts. Trehalose has a similar function in many parasitic interactions. In most cases of mycorrhizal associations trehalose synthesis creates a carbon sink in mycelium which leads to saccharide transfer from the host plant to the fungus. Completely different situation occurs in the types of mycorrhizal symbiosis, where saccharides are translocated from a fungus to a plant. Some plants can utilize trehalose effectively as a sole source of energy. Consequently, the question raises - could such plants gain fungal trehalose on purpose as a source of energy and carbon? This review aims to assess and discuss the mentioned possibilities considering available literature. Key words: mycorrhiza, orchids, parazitism, saccharides, sink, symbiosis,...
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Parasites And Their Preparation For School Utilization
Chlumová, Kateřina ; Říhová, Dagmar (advisor) ; Hanel, Lubomír (referee)
This diploma thesis deals with common parasites of game animals, animals and human occurring in the territory of the Czech Republic. It focuses on their fixation and general preparation of such specimens for usage in teaching of Science. The first part is devoted to the phenomenon of parasitism, and the history and definition of this concept. Systematic hierarchy of various unrelated parasitic groups is clarified. The second part provides the list of parasites, from the evolutionary original to the highly derived groups. We give an overview of their morphology and anatomy with the emphasis on their life cycle. The detailed knowledge of life cycle is essential for obtaining specimens. In each group, we indicate methods of collection and fixation in detail. The co called smartmicroscope represent the main point of the third part of proposed diploma thesis. Text of the thesis is supplemented with pictures taken by smart microscope, as well as by common microscope. KEY WORDS parasite, parasitism, mikropredatore, vector, fixation, preparation, smart mikroscope
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