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.
Results
Showing 1 to 11 of 11 for “"Spiroplasma"”.
-
Molecular Phylogenetic Analysis of Novel Spiroplasma Isolates
Spiroplasmas are among the smallest self replicating organisms known. They are helical, motile descendents of Gram-positive bacteria that have evolved to occupy broad host ranges including plants, insects and crustaceans. Spiroplasmas are the causative agent of several economically important …
-
Group VIII <em>Spiroplasma</em> of Costa Rica
<p><em>Spiroplasma</em> bacteria isolates are classified or identified through a series of serological tests that normally consists of screening, one-way deformation tests, cloning, antisera production, and reciprocal deformation tests. Serological tests on the spiroplasmas are followed by …
-
Analysis of Serology and Phylogeny in Spiroplasma Classification
<p>Spiroplasmas are helical, motile bacteria that are associated with plants and arthropods. Traditionally, they were classified into groups based on serology; however, the recent loss of antisera repositories led to the suspension of the requirement to complete serological analysis. Therefore, …
-
Comparative Serological and Molecular Analysis of Group VIII <em>Spiroplasma</em> from Australia and North America
<p><em>Spiroplasma</em> bacteria (Mollicutes: Spiroplasmataceae) are characterized by motility, helical morphology and are most frequently found in insect guts and phloem tubes of plants. Traditionally, <em>Spiroplasma</em> have been classified by serology. Recent work has generated 16S rDNA …
-
Histopathological, biological and molecular characteristics of the pathogenic Spiroplasma penaei isolated from the hemolymph of infected Pacific white shrimp, Penaeus vannamei
… characteristics of the pathogenic mollicute, Spiroplasma penaei, isolated from the hemolymph of infected Pacific white shrimp, Penaeus vannamei, were investigated. The doubling times of a S. penaei were 6.13 h (2% NaCl) and 3.43 h (no salt) under aerobic conditions, and 6.63 h (2% NaCl) and …
-
Motility of Swimming Bacteria Hydrodynamics and Statistics
… Next, we investigate the motility properties of Spiroplasma melliferum, which is special among bacteria, as it can swim without flagella. Instead, Spiroplasma can switch the handedness of its helical body and in the process, the helical domains rotate generating propulsion. Based on experimental …
-
Characterising the bacterial microbiota of Phlebotomus and Glossina insects : vectors of parasitic diseases
… of known tsetse symbionts including Sodalis and Spiroplasma, as well as the trypanosome parasite, was explored in wild Ugandan tsetse populations. Sodalis was detected in 39% of wild-caught tsetse, Wolbachia in 1.7%, Spiroplasma in 88% and Trypanosoma in 12%, providing essential information about …
-
A Molecular Diagnostic Survey of Pathogens and Parasites of Honey Bees, Apis mellifera L., From Arkansas and Oklahoma
… Nosema apis and N. ceranae; bacterial pathogens Spiroplasma apis and S. melliferum; Trypanosomatid parasites Crithidia mellificae and Lotmaria passim and the parasitic phorid fly Apocephalus borealis. A study including both migratory honey bee colonies and hobbyist managed colonies provides a …
-
Establishing Sodalis species as a laboratory model of endosymbionts
… diverse phenotypes: Wigglesworthia, Wolbachia, Spiroplasma and Sodalis. Sodalis glossinidius – a secondary endosymbiont - is interesting as sequencing of its genome suggests S. glossinidius has undergone less genome reduction than its primary symbiont counterparts such as Wigglesworthia, and …
-
Papel de las aves en la dispersión de garrapatas y microorganismos que vehiculan
… (Anaplasma/Ehrlichia, Borrelia, Rickettsia and Spiroplasma) and viruses (Crimean-Congo hemorrhagic fever virus, Flavivirus, Phlebovirus, Coltivirus and Orbivirus) using molecular biology techniques. In these studies, ticks belonging to five species (Haemaphysalis punctata, Hyalomma marginatum, …
-
Changes in Gene Expression and Viral Titer in Varroa Jacobsoni Mites After a Host Shift Asian to European Honey Bees
… virus (Tymoviridae), a microsporidian and a spiroplasma, all of which have been previously reported for <em>A. mellifera.</em> The results from the expression analysis suggested that there are four different viruses that are differentially expressed between mites on <em>A. cerana </em>and …