Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 20 for “"Commensalism"”.
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Study of a microbial commensalism
… own numbers being affected, indicating a true commensalism. The stimulation began by the 8th hour of incubation and continued throughout the growth period. The organisms were plated on differential plating media designed to specifically permit the growth of one organism while inhibiting the …
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The Small Animals of Maasai Settlements: Ethnoarchaeological Investigations of the Commensalism Model
… was designed to test Tchernov's model of commensalism and the idea that remains of commensal species that today coexist with humans in settlement environments could be used to detect early sedentism in the archaeological record. The validity of the model has been questioned due to the lack …
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Analysis of Bacterial-Host Interactions Between Campylobacter jejuni and the Avian Host During Commensalism
… animals, especially avian species, to result in commensalism. The primary route of transmission to humans is through the consumption or handling of undercooked poultry meats, making C. jejuni of particular importance to the agricultural industry. The direct interplay between C. jejuni and the …
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Growth in mixed cultures of microorganisms
An interaction of the commensalism type between P. vulgais and S. cerevisiae was discovered and verified. A continuous flow apparatus for investigation of this interaction was described. A Coulter Counter was used for detecting the number of the microorganisms grown in mixed cultures. Size …
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Prevotella Phylogeny: Genomic And Molecular Insights Into The Role Of The Human Commensal Prevotella In Cystic Fibrosis
… diseases. Due to it’s association with both commensalism and disease, the role of Prevotella in disease progression is unclear. However, Prevotella has shown immunomodulatory potential, the ability to change the metabolic microenvironment and other cytotoxic phenotypes in both in vitro and in …
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Prevalence and impacts of ants colonizing active bird nests in Illinois
… species and bird nests likely is a facultative commensalism benefiting ants that is widespread in North America, and warrants further investigation.
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Butyrate Sensing by Campylobacter jejuni Impacts Bacterial-Host Interactions
… of ΔbumS and ΔbumR mutants in a chick model of commensalism indicated that bumR is important for early colonization. This contrasts with a human volunteer infection study that demonstrated bumR is essential for infection of humans. Mutational analyses of genes within the BumSR regulon in the …
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Symbiotic synergies : adaptive framework for polydisciplinary collaboration in performance practice
… types of symbiotic relationships: mutualism, commensalism, and parasitism. Identifying distinct modes of hierarchy, stages in process, and direction of active influence between practitioners and expressive medium, the framework posits an adaptive approach in collaborative engagement, with the …
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Ecology of Mite Phoresy on Mountain Pine Beetles
… results, MPB and its phoretic mites sustain a commensalism and the lower distribution of mites may be a consequence of MPB outbreak dynamics.
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Candida Albicans Als5p Amyloid In Host-Microbe Interactions: A Ceanorhabditis Elegans Study
… the yeast-host interaction towards hallmarks of commensalism; c) be discriminated against by host pathogen recognition receptors (PRRs) leading to a slower decline in viability; and d) can lead to distinct downstream MAPK responses.</p>
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Signals and Sensory Mechanisms that Impact Campylobacter jejuni-Host Interactions
… present within the intestinal tract to establish commensalism. The sensing mechanisms and subsequent physiological responses by C. jejuni can be crucial for initial growth and colonization and long-term persistence within the infected host. However, how many of the signals and sensing mechanisms …
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Identification and Characterization of Flagellar Co-expressed Determinants (Feds) of Campylobacter jejuni
… to promote disease and infection of poultry for commensalism. Expression of many flagellar genes is dependent on two alternative sigma factors, σ54 and σ28. Μany rod and hook genes are dependent on σ54 for expression, whereas σ28 is involved in the expression of the major flagellin and other …
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The larval development of Pinnixa Longpipes (Lockington, 1877) (Brachyura: Pinnotheridae), reared in the laboratory
<p>The Pea Crab, Pinniza longpies, is commensal with the tube building polychaete, Axiothella rubrocincta. This worm constructs U-shaped tubes in san-mud substrata of bays and estuaries along the Pacific coast. The pronounced lateral elongation and diminutive size of p. Longpies enable it to move …
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Development and Application of a Microfluidic Cultivation Platform for the Analysis and Control of Industrially Relevant Synthetic Microbial Co-Cultures
… Especially interactions based on synthrophy and commensalism, i.e. mutual or unilateral positive dependencies, can be an asset for biotechnological processes. However, since the analysis of the interaction between two or more different microbial organisms in co-culture is highly challenging due …
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Social Interaction, Integration, and Alliances: Yavi-Chicha Ceramic Production and Circulation in the Border Region of Bolivia, Argentina, and Chile, A.D. 1000-1550
… been embedded in the new practices of political commensalism that emerged as social strategies within the context of coalescent communities. In the third article, I explore the social effects of circulating items by investigating the patterns of circulation of Yavi-Chicha pottery in the Chilean …
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Functional Genomic Examinations Of Interactions Between Common Members Of The Human Gut Microbiota
The adult human gut microbiota consists of hundreds to thousands of bacterial species, the majority belonging to the Bacteroidetes and the Firmicutes. Differences in the balance between these phyla has been linked to obesity in mice and humans. However, little is known about their interactions in …
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Applying ecological models to positive interactions among lotic fishes: implications for population and community regulation at multiple spatial scales
Positive biotic interactions such as mutualism, commensalism and facilitation are ubiquitous in nature, but historically have received considerably less research attention than negative interactions such as competition, predation and parasitism. The paucity of research on positive interactions is …
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Mechanism of Candida Albicans Biofilm and Virulence Inhibition By A Bacterial Secreted Factor
<p>The human microbiome is a diverse polymicrobial population comprised of both fungi and bacteria. Perturbations of the normal microbiome can have a profound impact on health, including the development of infections. Exploitation of these polymicrobial interactions has the potential to provide …
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Colonization dynamics of oro-gastrointestinal microbes critical to infant health
The gastrointestinal microbiota is intimately tied to a person’s health and well-being. This collection of bacteria, archaea, and fungi is assembled during a person’s infancy and achieves the stability of an “adult-like” microbiota in early childhood. Research has begun to uncover several host and …