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1

Taraphdar, Tanushree. "Molecular genetic characterization of wolbachia endosymbionts in dipteran pest of silkworm." Thesis, Vidyasagar University, 2005. http://hdl.handle.net/123456789/1392.

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2

Saeed, Abiya. "CHARACTERIZING THE MATERNALLY INHERITED ENDOSYMBIONTS OF SOLITARY BEES." UKnowledge, 2014. http://uknowledge.uky.edu/entomology_etds/10.

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Solitary bees are important pollinators of crops, with species in the family Megachilidae (mason bees) being used for orchard pollination. Commercial movement of these bees also moves their microbiota, including bacterial endosymbionts capable of reproductive manipulation. To test for presence of these bacteria, I screened commercially available species of US orchard pollinators and locally captured solitary bees from Kentucky. I also set up mason bee boxes in five apple orchards to examine recruitment of local pollinators. I conducted 454-pyrosequencing to determine bacterial diversity within
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Ellegaard, Kirsten Maren. "Genome Evolution and Niche Differentiation of Bacterial Endosymbionts." Doctoral thesis, Uppsala universitet, Molekylär evolution, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-217724.

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Most animals contain chronic microbial infections that inflict no harm on their hosts. Recently, the gut microflora of humans and other animals have been characterized. However, little is known about the forces that shape the diversity of these bacterial communities. In this work, comparative genomics was used to investigate the evolutionary dynamics of host-adapted bacterial communities, using Wolbachia infecting arthropods and Lactobacteria infecting bees as the main model systems. Wolbachia are maternally inherited bacteria that cause reproductive disorders in arthropods, such as feminizati
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Yuan, Xincheng. "Comparative genome analysis of Wolbachia strain wPanCI and wPanMK." Thesis, Griffith University, 2018. http://hdl.handle.net/10072/381508.

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Wolbachia are maternally transmitted endosymbionts that naturally infect approximately 40% of all insect species and impose a range of phenotypic effects upon their hosts, including feminization, parthenogenesis, cytoplasmic incompatibility (CI) and male-killing. The genetic basis and mechanisms of these phenotypes remain mostly undetermined. Investigating new strains of Wolbachia can provide important insight into the biology of the symbiosis. In Drosophila pandora, two distinct Wolbachia strains co-exist to manipulate host reproduction, which are wPanCI (causing CI) and wPanMK (causing male-
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Sontowski, Rebekka, Detlef Bernhard, Christoph Bleidorn, Martin Schlegel, and Michael Gerth. "Wolbachia distribution in selected beetle taxa characterized by PCR screens and MLST data." Universitätsbibliothek Leipzig, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-185242.

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Wolbachia (Alphaproteobacteria) is an inherited endosymbiont of arthropods and filarial nematodes and was reported to be widespread across insect taxa. While Wolbachia’s effects on host biology are not understood from most of these hosts, known Wolbachia-induced phenotypes cover a spectrum from obligate beneficial mutualism to reproductive manipulations and pathogenicity. Interestingly, data on Wolbachia within the most species-rich order of arthropods, the Coleoptera (beetles), are scarce. Therefore, we screened 128 species from seven beetle families (Buprestidae, Hydraenidae, Dytiscidae, Hyd
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Caballero, Rafael De J. "Systematics of the Bemisia tabaci Complex and the Role of Endosymbionts in Reproductive Compatibility." Diss., The University of Arizona, 2006. http://hdl.handle.net/10150/195357.

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Reciprocal and homologous crosses were carried out using pairs or groups of twenty males and females for three biotypes of the whitefly Bemisia tabaci complex. Crosses were undertaken for the A biotype-Arizona (AzA), the B biotype-Africa (AzB), and the monophagous, Jatropha (Jat) biotype-Puerto Rico. The maternal haplotype pedigree of parents and selected offspring (F₁, F₂) was determined using the mitochondria cytochome oxidase I sequence. All reciprocal crosses yielded viable female offspring, indicating reproductively compatibility, except for AzB♀ x AzA♂, or AzB♀ x Jat♂ crosses, which yiel
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Ellwood-Thompson, Rhianedd Eleri. "Occurrence and transmission of Wolbachia endosymbionts in the oak gall wasp community : application of denaturing gradient gel electrophoresis." Thesis, Cardiff University, 2004. http://orca.cf.ac.uk/55379/.

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Eight Wolbachia variants were identified in the wasp community. Identical Wolbachia variants were identified in inquiline and parasitoid wasp species suggesting that horizontal transmission of Wolbachia occurs in this community
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Martins, Cíntia. "Análises moleculares das formigas lava-pés (Solenopsis spp.) (Hymenoptera : Formicidae) e da presença da endobactéria Wolbachia /." Rio Claro : [s.n.], 2010. http://hdl.handle.net/11449/87741.

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Orientador: Odair Correa Bueno<br>Banca: Ana Eugênia C. Campos Farinha<br>Banca: Denise Selivon Scheepmaker<br>Resumo: O gênero Solenopsis tem distribuição cosmopolita, mas espécies do grupo S. saevissima, são nativas da América do Sul e inclui as conhecidas formigas lava-pés. Elas foram introduzidas de forma acidental em diversas regiões biogeográficas do mundo. No Brasil possuem ampla distribuição, mas têm preferência por áreas de atividade humana. São formigas altamente agressivas e são responsáveis por acidentes que podem levar a choques anafiláticos e à morte. As formigas apresentam assoc
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Lentz, Christian [Verfasser]. "Target-based discovery of novel inhibitors of enzymatic targets from Wolbachia endosymbionts and evaluation as antifilarial drug candidates / Christian Lentz." Bonn : Universitäts- und Landesbibliothek Bonn, 2013. http://d-nb.info/1080864466/34.

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Lentz, Christian Stephan [Verfasser]. "Target-based discovery of novel inhibitors of enzymatic targets from Wolbachia endosymbionts and evaluation as antifilarial drug candidates / Christian Lentz." Bonn : Universitäts- und Landesbibliothek Bonn, 2013. http://nbn-resolving.de/urn:nbn:de:hbz:5n-32648.

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11

Martins, Cíntia [UNESP]. "Análises moleculares das formigas lava-pés (Solenopsis spp.) (Hymenoptera : Formicidae) e da presença da endobactéria Wolbachia." Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/87741.

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Made available in DSpace on 2014-06-11T19:23:00Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-02-09Bitstream added on 2014-06-13T18:09:03Z : No. of bitstreams: 1 martins_c_me_rcla.pdf: 494549 bytes, checksum: 956ee49fb3cabf6b959eecbb86566527 (MD5)<br>O gênero Solenopsis tem distribuição cosmopolita, mas espécies do grupo S. saevissima, são nativas da América do Sul e inclui as conhecidas formigas lava-pés. Elas foram introduzidas de forma acidental em diversas regiões biogeográficas do mundo. No Brasil possuem ampla distribuição, mas têm preferência por áreas de atividade humana. Sã
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Vollmer, Jennifer [Verfasser]. "Wolbachia, endosymbionts of arthropods and filarial nematodes : Requirement of cell wall biosynthesis for cell division and replication in a host cell-free culture / Jennifer Vollmer." Bonn : Universitäts- und Landesbibliothek Bonn, 2013. http://d-nb.info/1048616126/34.

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Fattouh, Nour. "Caractérisation du mode de vie intracellulaire des endosymbiotes Wolbachia." Thesis, Montpellier, 2018. http://www.theses.fr/2018MONTT079.

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Les bactéries intracellulaires Wolbachia ont développé une vaste gamme d’interactions symbiotiques, du parasitisme reproductif au mutualisme chez les arthropodes terrestres et les nématodes filaires, devenant ainsi les endosymbiotes les plus répandus sur terre. Bien qu’elles se développent lentement dans les cultures cellulaires d’insectes pour lesquelles les marqueurs sont limités et qu’elles ne sont génétiquement pas manipulables, il existe un intéret croissant de déchiffrer leur mode de vie intracellulaire pour 2 raisons. Premièrement, Wolbachia intervient dans le développement et la transm
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Gibbons, Sarah Jane. "Population genetics of Wuchereria bancrofti and its bacterial endosymbiont Wolbachia." Thesis, University of Liverpool, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.485943.

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Wuchereria bancrofli is a filarial parasite responsible for 90% of lymphatic filariasis worldwide. Currently a mass drug administration programme, The Global Programme for the Elimination of Lymphatic Filariasis (GPELF) is underway, through the administration of three drugs: diethylcarbamazine (DEC), albendazole and ivermectin, to eliminate lymphatic filariasis as a global he~lth problem. The major aims of the research described in this thesis, were to investigate the genetic diversity of W. bancrofli and their endosymbiotic bacteria Wolbachia and to investigate the presence of putative resist
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Klemm, Claudia Ulrike [Verfasser]. "Identification of a putative Litomosoides sigmodontis phosphate permease, Ls-ppe-1, and its role in the interaction between filarial nematodes and their Wolbachia endosymbionts & Establishment of RNA interference in the rodent filaria Litomosoides sigmodontis, a model of human filariasis / Claudia Ulrike Klemm." Bonn : Universitäts- und Landesbibliothek Bonn, 2009. http://d-nb.info/1005973725/34.

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Tamarozzi, Francesca. "Wolbachia endosymbiont of Onchocerca volvulus : driver of immunopathology and target for therapy." Thesis, University of Liverpool, 2012. http://livrepository.liverpool.ac.uk/7855/.

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Onchocerciasis affects an estimated 37 million people in Sub-Saharan Africa and Latin America, causing debilitating skin and eye disease and accounting for a global loss of 1 million Disability-Adjusted Life-Years. The discovery of Wolbachia bacterial endosymbionts in filarial nematodes, including Onchocerca volvulus, has revolutionised the understanding of the parasite’s biology and immunopathogenic mechanisms of disease, and has offered a novel approach to its treatment and control with anti-Wolbachia antibiotics. Treatment with doxycycline is effective at sterilising and killing adult O. vo
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Truitt, Amy Michelle. "Wolbachia-Host Interactions and the Implications to Insect Conservation and Management." PDXScholar, 2017. https://pdxscholar.library.pdx.edu/open_access_etds/3643.

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Parasitic reproductive endosymbionts are emerging as formidable threats to insect biodiversity. Wolbachia are prevalent maternally inherited intra-cellular bacteria found in >50% of arthropod species. These symbiotic bacteria interact with their hosts in diverse ways, most often they alter host reproduction causing four conditions that all selectively favor infected females: feminization, male killing, parthenogenesis, and cytoplasmic incompatibility (CI). Furthermore, depending on strain-type and host genetic background, Wolbachia are known to affect insect behavior, expand or shift host ther
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Oliver, Kerry M. "The role of pea aphid bacterial symbionts in resistance to parasitism." Diss., Tucson, Arizona : University of Arizona, 2005. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu%5Fetd%5F1031%5F1%5Fm.pdf&type=application/pdf.

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Ribeiro, Rafael Meira. "Wolbachia e incompatibilidade citoplasmática em Anastrepha sp. 1 aff. fraterculus e A. obliqua (Diptera: Tephritidae)." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/41/41131/tde-21052009-101359/.

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Wolbachia é um gênero de bactérias endossimbiontes que são verticalmente transmitidas pelas fêmeas aos seus descendentes, embora transmissão entre táxons distintos também ocorra com certa freqüência. Entre os efeitos que essa bactéria causa nos sistemas de reprodutivos de seus hospedeiros destaca-se a incompatibilidade citoplasmática (IC). Wolbachia foi descrita em numerosas espécies de artrópodos, especialmente os insetos. Dentre os insetos, essa bactéria foi descrita em diversos gêneros das moscas-das-frutas da familia Tephritidae, tendo sido demonstrada a IC em Rhagoletis cerasi e Ceratitis
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Fenn, Katelyn A. "A molecular study of the interactions between the parasitic nematode Brugia malayi and its endosymbiont, Wolbachia." Thesis, University of Edinburgh, 2005. http://hdl.handle.net/1842/14834.

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The aim of this thesis is to work towards establishing the molecular basis of the communication between the host nematode <i>Brugia malayi</i> and its host specific <i>Wolbachia</i> strain, <i>w</i>Bma. The genome sequence of <i>w</i>Bma was annotated and compared to the published annotated genome of the <i>Wolbachia</i> found in <i>Drosophila melanogaster </i>(<i>w</i>Mel). Interesting genes discovered in the <i>w</i>Bma genome include a family of seven ankyrin repeat containing (ANK) proteins. ANK proteins are known to be involved in many protein:protein interactions, more commonly in eukary
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Atyame, Nten Célestine Michelle. "Dynamique évolutive des bactéries endocellulaires Wolbachia et des incompatibilités cytoplasmiques chez le moustique Culex pipiens." Thesis, Montpellier 2, 2011. http://www.theses.fr/2011MON20031/document.

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Les Wolbachia sont des α-Protéobactéries endocellulaires transmises maternellement et qui manipulent la reproduction des Arthropodes pour augmenter leur transmission. Chez le moustique Culex pipiens, Wolbachia induit l'incompatibilité cytoplasmique (IC) qui se traduit par une forte mortalité embryonnaire lors de croisements entre individus infectés par des souches incompatibles de Wolbachia. Ce moustique se caractérise par une forte diversité génétique de ses Wolbachia (nommées wPip) et par des patrons d'IC complexes. Nous avons examiné les mécanismes qui façonnent la dynamique de cette associ
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Badawi, Myriam. "Base génétique moléculaire de la féminisation induite par la bactérie endosymbiotique Wolbachia." Thesis, Poitiers, 2014. http://www.theses.fr/2014POIT2306/document.

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La symbiose est l'un des principaux moteurs de l'évolution. Le génotype du symbiote est capable d'altérer le phénotype de l'hôte, et vice-versa : c'est le « phénotype étendu ». Dans ce contexte, les endosymbioses à Wolbachia sont remarquables. Cette bactérie intracellulaire est un parasite de la reproduction capable d'induire la féminisation des mâles génétiques ou l'incompatibilité cytoplasmique chez ses hôtes crustacés isopodes terrestres. Actuellement, aucun mécanisme moléculaire régissant ces effets n'est connu. Dans le but d'identifier des gènes impliqués dans la féminisation, nous avons
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Genty, Lise-Marie. "Approche in situ de la régulation des interactions arthropode-symbiote." Thesis, Poitiers, 2013. http://www.theses.fr/2013POIT2324/document.

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La présence de Wolbachia dans les ovogonies assure la transmission verticale de la bactérie à la descendance de l'hôte. Cependant, nous montrons que chez l'hôte Armadillidium vulgare, l'efficacité de l'infection des descendants tient à un enrichissement en Wolbachia au cours de la maturation des ovaires et des ovocytes dû à une sélection en faveur des ovocytes infectés et/ou à l'entrée secondaire de Wolbachia dans les ovocytes en cours de maturation via l'infection des tissus somatiques. Dans ces tissus, nous avons précisé la localisation de Wolbachia au niveau cellulaire et révélé des morphot
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Jäckel, Regina [Verfasser], and Susanne [Akademischer Betreuer] Dobler. "Einfluss von Wolbachia-Endosymbionten auf Populationsstruktur, prägame Isolation und Speziationsmechanismen bei Altica lythri Aubé, 1843 (Coleoptera, Chrysomelidae) / Regina Jäckel. Betreuer: Susanne Dobler." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2011. http://d-nb.info/1020383119/34.

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Laurin-Lemay, Simon. "Phylogéographie comparée d’un système multitrophique : les parasitoïdes du genre Horismenus spp. ont-ils échappé au processus de domestication du haricot au Mexique?" Thèse, 2010. http://hdl.handle.net/1866/4762.

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Cette étude vise à comparer l’histoire évolutive des parasitoïdes du genre Horismenus (Hymenoptera: Eulophidae) à celle de leurs hôtes bruches (Coleoptera: Bruchidae) et plante hôte (Phaseolus vulgaris L.) cultivée dans le contexte d’agriculture traditionnelle, au sein de son centre de domestication Mésoaméricain. Nous avons analysé la structure génétique de 23 populations de quatre espèces de parasitoïdes au Mexique, en utilisant un fragment du gène mitochondrial COI afin de les comparer aux structures précédemment publiées des hôtes bruches et du haricot commun. Nous avons prédit que les str
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Kern, Peter. "Wolbachia in Eurema butterflies : endosymbiont effects on host sex ratios and population genetics." Thesis, 2015. http://hdl.handle.net/1959.7/uws:44206.

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Many insect species are infected with endosymbiotic bacteria that live in the cytoplasm of their host cells. Most of these bacteria are maternally inherited and can manipulate reproduction of their insect hosts by inducing cytoplasmic incompatibility (CI), thelytokous parthenogenesis, male killing and feminisation, and some of these manipulations distort the sex ratio of their hosts. This PhD research studied Wolbachia infections in Eurema butterflies (Lepidoptera: Pieridae), the effects of Wolbachia on their sex determination system, and the effects on gene flow and genetic diversity across
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Castillo, Chantel Tamar, and 關佳萱. "Molecular Detection of Wolbachia endosymbiont in Rhipicephalus sanguineus (Acari: Ixodidae) Ticks of Southern Taiwan." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/4edy78.

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碩士<br>高雄醫學大學<br>熱帶醫學碩士學位學程<br>106<br>Background. Wolbachia belongs to the order Rickettsiales and is considered a common intracellular bacteria within a variety of arthropods. As an endosymbiont, Wolbachia is not known to directly infect vertebrates and possesses an interesting ability to alter its host biology in diverse ways, such as suppression of vector population and interference of pathogen transmission. Previous studies have reported that Wolbachia plays a role in cytoplasmic incompatibility and is able to reduce dengue and Zika virus transmission in some mosquitoes. Hence, this symbio
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von, Saint André von Arnim Amélie. "The Role of Endosymbiotic Wolbachia Bacteria in the Pathogenesis of River Blindness." Doctoral thesis, 2007. https://nbn-resolving.org/urn:nbn:de:bvb:20-opus-31560.

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Introduction: This study investigates the role of Wolbachia bacteria in the pathogenesis of O. volvulus keratitis in a mouse model. Wolbachia bacteria are essential symbionts of most filarial nematodes of importance for mankind. Methods: Using a mouse model for river blindness in which soluble extracts of filarial nematodes are injected in the corneal stroma, changes in stromal thickness and haze of the cornea are observed by in vivo confocal microscopy, followed by immunohistochemical staining for neutrophils and PECAM-1, as well as ELISA of corneal chemokines. Reactions to filarial extracts
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Harris, Leanne Rochelle. "The invasion and spread of the bacterial endosymbiont Cardinium in Encarsia pergandiella (Hymenoptera: Aphelinidae)." Thesis, 2008. http://hdl.handle.net/1828/2580.

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A large and extremely diverse number of insects harbour maternally transmitted bacterial symbionts. Some symbionts manipulate host reproduction in order to benefit their own fitness, and the most common of these reproductive manipulations is cytoplasmic incompatibility (CI). In CI, uninfected females produce few or no viable progeny when mated to infected males. The bacterial endosymbiont Cardinium causes CI in its host, Encarsia pergandiella (Hymenoptera: Aphelinidae). I used population cages with varying initial infection frequencies to test a model of CI invasion. Cardinium was found to sp
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Ophine, Lely, and Lely Ophine. "Genetic Identification and Phylogenetic Analysis of Culex Mosquitoes and Its Endosymbiont Wolbachia from Sumatera Utara, Indonesia." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/01145249254117481242.

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碩士<br>高雄醫學大學<br>醫學研究所碩士班<br>105<br>Background: The potential application of the endosymbiotic bacteria, Wolbachia, to the control of mosquito-borne infections has emerged as a novel biological control strategy against mosquitoes. Although Culex mosquitoes play the role as the primary vector for lymphatic filariasis and Japanese encephalitis in Indonesia, little is known about the composition and structure of their microbiota, specifically Wolbachia. Objectives: The objectives of this study are to determine the genetic identity of Culex mosquitoes collected from Sumatera Utara, Indonesia, and t
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Paulo, Tânia Filipa Teixeira. "Testing endosymbiont-mediated immune protection in a novel host species." Master's thesis, 2015. http://hdl.handle.net/10451/22490.

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Tese de mestrado, Biologia Evolutiva e do Desenvolvimento, Universidade de Lisboa, Faculdade de Ciências, 2015<br>The complexity of life forms cannot be explained without the concept of symbiosis. Symbiotic relations exist abundantly in nature, particularly the ones between bacteria and eukaryotic hosts. One of the most widespread endosymbiotic bacteria described belongs to the genus Wolbachia, naturally infecting arthropods and nematodes. In arthropods, Wolbachia induces reproductive manipulations, to promote infected female’s fitness as they are vertically transmitted, maternally. Additional
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McPherson, Audrey E. "Factors influencing the intriguing persistencce of a Wolbachia symbiont in spotted wing Drosophila." Thesis, 2021. http://hdl.handle.net/1828/13005.

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Wolbachia is a maternally inherited, endosymbiotic bacterium that infects at least 40% of terrestrial arthropods. As a facultative symbiont in the majority of its hosts, Wolbachia commonly act as a reproductive parasite; however, there are a number of Wolbachia strains that do not cause reproductive manipulations in their hosts and have no apparent fitness enhancement, yet are stably maintained in populations at low to intermediate frequencies. How these strains of Wolbachia persist in nature has been a long-standing question and is still unresolved. One explanation for the persistence of such
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Paulson, Amber Rose. "The Microbial Associates and Putative Venoms of Seed Chalcid Wasps (Hymenoptera: Torymidae: Megastigmus)." Thesis, 2013. http://hdl.handle.net/1828/5103.

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Conifer seed-infesting chalcids of the genus Megastigmus (Hymenoptera: Torymidae) are important forest pests. At least one species, M. spermotrophus Wachtl, has been shown to be able to manipulate the seed development of its host, Douglas-fir (Pseudotsuga menziesii) in remarkable ways, such as redirecting unfertilized ovules that would normally abort. The mechanism of host manipulation is currently unknown. Microbial associates and venoms are two potential mechanisms of host manipulation. Microbial associates are emerging as an important player in insect-plant interactions. There is also evide
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