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 “"Vibrios"”.
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Symbiotic Associations and Pathogenic Potential of Vibrios In the North Inlet Estuary
… or curved rods common throughout marine systems. Vibrios inhabit a range of niches within the water column, attached to sediment particles and in symbiotic associations with marine animals and plants. Most commonly though, vibrios are known for their pathogenic nature and are the causative agents …
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Application of Alternative Technologies to Eliminate <i>Vibrios </i> spp. in Raw Oysters
… was compared with microwave enumeration data on Vibrios in oysters. The observed maximum log reductions by microbial enumeration were 4.4 and 3.4 for <i>V. vulnificus</i> and <i>V. parahaemolyticus</i>, respectively. The lethality calculated by integrating temperature profiles was acceptable. The …
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Survival of Vibro vulnificus and other Vibrios in raw oysters (Crassostrea virginica) during processing in Virginia and cold storage
… incubated at 35-37°C, salt content, pH, total Vibrios and V. vulnificus populations before and after processing. Oysters were stored in crushed ice and maintained an internal temperature of 1°C and tested at 5, 10, and 15 days after processing. Oysters were also stored at -9°C tested every one …
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The stimulation or inhibition of growth and acid precipitable material production of Vibrio Fetus by Kreb's cycle intermediates, fatty acids, amines, and miscellaneous compounds
… medium used for obtaining maximal growth of vibrios. Studies requiring a large cell crop of vibrios would be facilitated by the use of the chemically defined medium to which lactate, citrate, and/or succinate had been added. A large cell crop of V. fetus would be useful in preparation of V. …
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Improved Detection Methods for Selected Vibrio Species in the Marine Aquatic Environment
… relative abundance of the three main pathogenic Vibrios following the opening of the Bonnet Carre spillway to prevent the Mississippi River from flooding New Orleans. This influx of fresh water into the Mississippi sound had a significant impact on the salinity and enabled <em>V. cholerae</em> …
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Rischio igienico sanitario associato al consumo dei molluschi eduli lamellibranchi (M.E.L)
… by law (Escherichia coli, Salmonella spp) and Vibrios of major public health interest have been investigated in this study. Within the 440 examined samples, 40% contained potentially harmful Vibrios species to human being, while only in 6.4% of the samples, the levels of Escherichia coli were …
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Plastics and Microplastics as Vectors for Bacteria and Human Pathogens
… of <em>Vibrio spp</em>. In many instances, vibrios were enriched on plastics by at least two orders of magnitude compared to paired seawater samples. Antibiotic-resistance profiles for <em>Vibrio spp</em>. isolates revealed no differences between the antibiotic susceptibilities of vibrios …
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Quroum sensing disruption and the use of short-chain fatty acids and polyhydroxyalkanoates to control luminescent vibriosis
Luminescent vibrios are amongst the most important pathogens in aquaculture. As a result of the massive (mis)use of antibiotics in order to treat infections, these pathogens have acquired resistance to most of the antibiotics that are used. Consequently, antibiotics are not effective anymore to …
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A cholera model linking between-host, within-host and environmental disease dynamics
… of virus and immune cell interaction with the vibrios. For each subgroup, we discuss the existence and uniqueness of a DFE (Disease Free Equilibrium) by calculation of the Basic Reproduction number R_0, when applicable, and the existence and uniqueness of a positive EE (Endemic Equilibrium) …
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Multi-scale and multi-group modeling techniques applied to Cholera and COVID-19
… virus and immune cell interaction with the vibrios. One model is presented to incorporate all three of these dynamical components. This model is extended to consider the case of a sub-divided population interacting in a spatially heterogeneous environment. In particular, we find that the …
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Interactions between calanoid copepod hosts and their associated microbiota
… E. affinis distinctly responds to colonizing Vibrios. Finally, we probed how specifically and predictably bacterial communities assemble on C. finmarchicus. Our findings suggest that C. finmarchicus has a predictable “core microbiome” that persists throughout the host’s entrance into diapause. …
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Emergent patterns of diversity and dynamics in natural populations of planktonic Vibrio bacteria
… using the genus Vibrio as a model system. Vibrios are ubiquitous marine bacteria, and include a variety of pathogens. Quantification of Vibrio environmental dynamics by cultivation- independent quantitative PCR and constant denaturant capillary electrophoresis (CDCE), suggests that sea …
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Nachweis und Differenzierung von Vibrio sp. in Krusten- und Schalentieren und Erzeugnissen daraus unter besonderer Berücksichtigung der routinemäßigen Diagnostik
… study was to reveal the contamination rate by vibrios of commercially available crustaceaens, and molluscs, and products thereof. Beside this, a simple quick routine method for the detection should be established. Between January 2001 and May 2002 the administrative „Wirtschaftskontrolldienst“ …
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Protection of Artemia from vibriosis by heat shock and heat shock proteins
… constraint on aquaculture and in this context vibriosis brings about massive mortalities in many commercial species, ranging from fish to shrimp, with resultant heavy monetary losses. During my work the application of heat shock proteins (Hsps) as an approach to disease control in aquaculture …
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Ecology and population structure of Vibrionaceae in the coastal ocean
… into particulate matter. In summary, although vibrios are known commensals of marine invertebrates, evidence suggests that population structure within animals is fairly weak compared to suspended particles in the water column. This highlights the importance of comparing multiple environmental …
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Iron and the ecology of marine microbes
… strategies in specific populations of marine vibrios with distinct micro-habitat preferences. Using a combination of genomics and functional screens, I showed that siderophore-based iron acquisition is not conserved at the organismlevel but represents a stable trait at the population level. …
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Interactions between calanoid copepod hosts and their associated microbiota
… distinctly recognize and respond to colonizing vibrios via transcriptional regulation of innate immune response elements and transcripts involved in maintaining cuticle integrity. Our work also suggests that association with E. affinis can significantly impact the physiology of Vibrio colonists. …
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Seleção e avaliação de bactérias do gênero Bacillus com potencial probiótico para uso na carcinicultura
… de bactérias totais, Bacillus spp. e Vibrios spp. De uma coleção heterogênea isolada de 107 isolados bacterianos do hepatopâncreas e estômago de Litopenaues vannamei, apenas 20 foram positivos para as atividades de enzimas digestivas que funcionou como teste de seleção inicial e foram …
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Understanding host, pathogen, environment dynamics in the marine environment with a particular focus on the Pacific oyster crassostrea gigas and its pathogens
This study was undertaken to investigate viral and bacterial infections in Pacific oysters in Ireland. In recent years, ostreid herpes virus-1 (OsHV-1) and variants, in particular OsHV-1 microVar (OsHV-1 µVar), and bacteria belonging to the genus Vibrio, specifically V. splendidus and V. …