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 24 for “"Vector species"”.
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Malaria situation in Namibia: A study of vector species and effectiveness of the past and current control strategies in selected parts of Namibia
… northern parts of Namibia. Although the malaria vectors were presumed to be Anopheles arabiensis, a member of the Anopheles gambiae group of morphologically similar species, no scientific study had been undertaken to identify the species in Namibia. Given the variable behaviour of this species, …
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Blood host preferences and competitive inter-species dynamics within an African malaria vector species complex inferred from signs of animal activity around aquatic larval habitats distributed across a gradient of fully domesticated to fully pristine ecosystems in southern Tanzania
The effectiveness of current first-choice vector control interventions on the semi-zoophagic vector Anopheles arabiensis are limited, among other things, by insecticide resistance and their ability to acquire non-human bloodmeals. Across much of southern Tanzania, in areas where humans and cattle …
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Genetic Analysis of Tritrophic Interactions between Entompathogenic Nematodes, Symbiotic Bacteria and Blood – Sucking Flies.
… a year through the viruses and parasites they vector. Many of these vector species have successfully expanded their range into temperate climates due to a combination of climate change and the easy movement of goods and people around the world. The temperate climate of the U.K. is home to 34 …
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The Behaviour and Ecology of Mosquito Vectors
Mosquitoes continue to vector pathogens to humans around the world. Research into the unique behaviour and ecology of vector species enables new avenues of control to be developed. I examined two mosquito vector species. The first, Coquillettidia perturbans (Walker, 1856), has been incriminated as …
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Rôle des moustiques Culicidae, de leurs communautés microbiennes et des réservoirs vertébrés, dans la transmission des arbovirus à Madagascar
… of the virus transmission and identity of the vector species and vertebrates réservoirs involved. Madagascar island was chosen for its high endemic biodiversity, contrasting climatic conditions and drastic changes in habitats due to an increase anthropic pressure. These factors increase the …
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Assessment of impacts of indoor residual house spraying (IRHS) on the diversity, abundance and distribution of human malaria vectots in Chongwe District, Zambia
Dominant human malaria vectors in Chongwe district, Zambia, were identified and impacts of indoor Residual House Spraying (IRHS) on their diversity, abundance and distribution assessed. A case-control type of study design was used in which Chishiko village in the district was the case in point, …
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Assessment of impacts of indoor residual house spraying (IRHS) on the diversity, abundance and distribution of human malaria vectots in Chongwe District, Zambia
Dominant human malaria vectors in Chongwe district, Zambia, were identified and impacts of indoor Residual House Spraying (IRHS) on their diversity, abundance and distribution assessed. A case-control type of study design was used in which Chishiko village in the district was the case in point, …
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Blood Meal Analysis for the Detection and Identification of Host DNA in the Gut Contents of Ornithodoros coriaceus
Ornithodoros coriaceus ticks are the vector for the disease epizootic bovine abortion, an abortive disease of cattle that can cause significant revenue losses in the beef cattle industry, in the western United States. The transmission cycle of the etiologic agent is unknown and it has not been …
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Vector Competence of Aedes aegypti for Zika Virus and Effects of Colonization
The following dissertation aims to determine how vector colonization of influences the vector competence of Aedes aegypti for Zika virus (ZIKV) as well as the microbiome as a correlating factor. Ae. aegypti is the vector of multiple arthropod-borne viruses including dengue, yellow fever, and Zika …
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Functional characterization of olfactory receptors and molecular species identification of vector mosquitoes.
… dengue, malaria, yellow fever, and Zika. Not all species of mosquitoes are responsible for vectoring these pathogens however, so accurate identification and surveillance are extremely important and directly impact human health. DNA barcoding allows for a rapid, accurate, and reliable species …
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Mosquito Species Abundance, Diversity and Arbovirus Prevalence across Different Land-use in The Gambia
… The Gambia. This study investigates mosquito species abundance and diversity, as well as the arbovirus prevalence across human, agricultural, and sylvatic habitats in The Gambia, accounting for ecological and seasonal variation. Adult mosquito samples were collected using a BG-Pro and CDC …
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Aquatic Community Interaction Diversity and Mosquito Larvae
… which includes an estimated 3,600 described species. Colloquially we knowmosquitoes as biting insects that pose a threat to humans and domestic animals asimportant vectors of disease. Although a minority of the described species of mosquitoesare not known as competent disease vectors, many …
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The Impact of the Non-Structural Small Segment Gene on Host Immune Responses Against Rift Valley Fever Virus
… proximity and relationship between, the mosquito vector species, livestock, and humans, infection spreads to humans causing a range of mild to severe clinical conditions. The severe health and economic impacts RVFV exerts on endemic regions demands the urgent development of effective preventive …
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Secondary Transmission Dynamics of the West Nile Virus in Mosquitoes
… 2013 season individuals across 9 different WNV vector species were collected throughout the Niagara region with 1023 tested for the presence of naturally occurring WNV TOT. None of the samples showed signs of TOT. A single gravid female Culex pipiens tested positive for WNV, but no viral RNA was …
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Aedes aegypti Heat Shock 70 Genes and their Inducible Promoters
Aedes aegypti is an important vector of the viruses that cause dengue fever, dengue hemorrhagic fever, and yellow fever. In depth genetic studies of vector species have been made possible due to the availability of genome sequences and techniques for producing stably transformed mosquitoes. These …
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Forest disturbance, mosquito vector ecology and La Crosse virus dynamics in southwestern Virginia
… the temperate forest mosquito community, LACV vectors, and the LACV amplifying vertebrate host (chipmunks) were impacted by logging. This research was conducted across an experimental FCD gradient (from least to most disturbed: contiguous control, fragmented control, clearcut, and high-leave …
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Reading Between the Strands: Deciphering Double Stranded RNA-Based Immune Responses in Mosquito-Virus Interactions
… Culex quinquefasciatus is a globally distributed vector species that contributes to the spread of multiple arthropod-borne viruses. Despite their significance, the molecular mechanisms by which Culex species mosquitoes recognize and respond to viral infection remain poorly understood. Antiviral …
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La Crosse virus and Dirofilaria immitis: Abundance of Potential Vectors in Southwestern Virginia and the Effects of Dual Infection on Aedes albopictus and Ochlerotatus triseriatus
… Ae. albopictus and Oc. triseriatus are important vectors of La Crosse virus and among the numerous species able to transmit D. immitis. In this study, Aedes albopictus and Ochlerotatus triseriatus were infected with La Crosse virus and Dirofilaria immitis to determine the effects of dual infection …
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Direct and indirect effects of native and invasive plants on mosquito ecology
… mosquitoes (Diptera: Culicidae), including the vectors of human and wildlife pathogens, interact with terrestrial plants throughout their life cycles. Inputs of leaf detritus into the aquatic habitat provide an energy base for developing larvae, and plants mediate the distribution of adult …
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Characterizing the effect of mutation recombination and reassortment on the genetic diversity of African horse sickness virus genomes
… at least two different virus strains of the same species. Since it is an arbovirus, we proposed that the virus would evolve slower than other RNA viruses that require a single host for replication, due to limitations imposed by its ability to successfully infect and replicate in both insect vector …
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