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 20 of 235 for “"Tick"”.
-
One tick closer to a better understanding of tick physiology and how to incorporate tick biology in a classroom
The black-legged tick, Ixodes scapularis (Acari: Ixodidae), transmits pathogens that can have detrimental effects on human and wildlife health. The pathogens that I. scapularis transmits include the causative agents of Lyme disease and Powassan virus disease. Due to various human impact factors …
-
Modeling host responses to tick feeding and tick-borne flavivirus evolution and dispersal
Ixodid ticks are hematophagous arthropods that feed on host animals for an extended period of time. To facilitate feeding, ticks secrete a complex mixture of salivary molecules that inhibit host responses such as coagulation, complement, itch responses, and immune responses. Ticks act as vectors …
-
Tick toxinology : isolation and characterisation of the toxin from the Australian paralysis tick, Ixodes holocyclus
Several species of ticks have been reported to secrete neurotoxins which can be fatal to mammals, including man. Envenomation by the Australian paralysis tick, I. holocyclus, is a considerable veterinary problem affecting tens of thousands of domestic and native animals each year. Envenomation is …
-
Abiotic Factors Contributing to the Survival of Three Tick Species in Southeastern Virginia, <i>Amblyomma Americanum</i> (Lone Star Tick), <i>Dermacentor Variabilis</i> (American Dog Tick), and <i>Amblyomma Maculatum</i> (Gulf Coast Tick)
… <em>Dermacentor variabilis</em> are hard-bodied ticks in the Hampton Roads area of southeastern Virginia. This study consisted of two field projects focused on these tick species. To estimate the off-host survival of local tick species, a capture-mark-recapture (CMR) study was performed. An …
-
Molecular Detection of Tick-Borne Pathogens Associated With Ixodid Tick Species Infesting Migratory Songbirds and Ruminants
<p>Ticks are hematophagous arthropods and capable of inoculating various infectious agents to their vertebrate hosts. Ticks attached to birds and ruminants are capable of carrying tick-transmitted microorganisms. In our study, the prevalence of tick-borne pathogens was examined in ticks infesting …
-
Modeling the Impact Of Environmental Factors, Diapause and Control Strategies on Tick and Tick-Borne Disease Dynamics
… responsible for a wide variety of diseases: ticks. Due to climate change, various tick species are rapidly spreading northward from the United States and have increasingly affected the Canadian population through a variety of tick-borne diseases including Lyme disease. In order to address …
-
A Metagenomic Study of The Tick Midgut
<strong>A Metagenomic Study of the Tick Midgut<br></strong> Daniel Yuan, B.S.<br> Supervisory Professor : Steven J. Norris, Ph.D.<br> Southern tick–associated rash illness (STARI) or Master’s disease is a Lyme-like illness that occurs following bites by <em>Amblyomma americanum</em>, the lone-star …
-
Ticks And Tick-Borne Pathogens In North Dakota
<p>In 2010 a statewide survey of ticks and tick-borne pathogens was conducted in North Dakota. Ticks were collected from the four eco-regions in the state by flagging for questing adults and by collecting feeding immature ticks from trapped small mammals. I collected 1762 individual ticks …
-
HIJACKING OF CELLULAR PATHWAYS BY NOVEL TICK-BORNE PHLEBOVIRUS
… Syndrome (SFTS) virus is an emerging tick-borne Phlebovirus isolated from patients presenting with hemorrhagic manifestations. Case fatality rates of 12-50% have been reported. Limited information regarding SFTS virus pathogenesis is known. Inhibition of interferon (IFN) responses by …
-
Epidemiologic studies of hard tick-associated illness in the United States
… describes three epidemiologic studies of hard tick-associated illness in the United States. The first is the prospective health assessment of Fort Campbell, Kentucky patrons bitten by ticks during 2004-2006. The study was designed to determine the frequency, clinical characteristics, and …
-
Tick Infestations and Their Consequences for Migratory Songbirds During Spring Stopover
… how haematophageous ectoparasites, such as ticks (<em>Ixodida</em>), impact host body condition as they feed on passerines during migration. We hypothesized that foraging location would impact tick acquisition by migrants and that tick burdens during migration would negatively impact body …
-
THE ECOLOGY OF TICK-BORNE RELAPSING FEVER IN WESTERN NORTH AMERICA
<p>In North America the primary cause of tick-borne relapsing fever (TBRF) is the spirochete <i>Borrelia hermsii</i> that is vectored by the tick <i>Ornithodoros hermsi</i>. Ecological investigations were combined with mathematical modeling and genetics to gain a clearer understanding of the …
-
THE ECOLOGY OF TICK-BORNE RELAPSING FEVER IN WESTERN NORTH AMERICA
<p>In North America the primary cause of tick-borne relapsing fever (TBRF) is the spirochete <i>Borrelia hermsii</i> that is vectored by the tick <i>Ornithodoros hermsi</i>. Ecological investigations were combined with mathematical modeling and genetics to gain a clearer understanding of the …
-
Expression of a tick toxin for the development of a canine vaccine
… failure is the dominant characteristic of tick toxicosis by the Australian paralysis tick, Ixodes holocyclus. A tick toxin vaccine has the potential to be an effective preventative measure against tick toxicosis that affects thousands of domestic and companion animals each year. In previous …
-
Elucidating the Molecular Function of Reprolysin Metalloproteases in Tick-Host-Pathogen Interaction
<p>Ticks are ectoparasites that attach to their host for many days to weeks, feeding to engorgement and continuing their species life cycle. The mechanisms behind the successful feeding and manipulation of host immune responses have been associated with the secretion of their specialized saliva. …
-
Tick-borne Diseases: Assessing the Knowledge, Attitudes, and Behaviors of College Students
… Southern Illinois University Carbondale TITLE: TICK-BORNE DISEASES: ASSESSING THE KNOWLEDGE, ATTITUDES, AND BEHAVIORS OF COLLEGE STUDENTS. MAJOR PROFESSOR: Dr. Dhitinut Ratnapradipa Within the last few decades, the prevalence of tick-borne diseases (TBDs) has dramatically increased. Symptoms of …
-
Characterisation and analysis of the NS1 gene of tick-borne encephalitis virus
Tick-borne encephalitis virus (TBEV) encodes a highly immunogenic ncnstructural glycoprotein, NS1. The proposed NS1 gene from the TE V strains Neudörfl and K23 was identified, cloned and sequenced. The NS1 gene from the Neudorfl strain of TBEV was then cloned under the powerful constitutive …
-
The tick response to Rickettsial dissemination during typical and atypical Rickettsial infection
Ticks are the only disease vectors for spotted fever group (SFG) Rickettsia which are obligate intracellular bacteria belonging to the genus Rickettsia. In nature, ticks maintain the infection of SFG Rickettsia via vertical and horizontal transmission. However, the prevalence of rickettsial …
Page 1 of 12