distribution and prevalence of cytauxzoon felis in bobcats (lynx rufus), the natural reservoir, and other wild felids in thirteen states.cytauxzoon felis, a protozoan parasite of wild and domestic felids, is the causative agent of cytauxzoonosis in domestic and some exotic felids in the united states. the bobcat (lynx rufus) is the natural reservoir for this parasite, but other felids such as florida panthers (puma concolor coryii) and domestic cats may maintain long-term parasitemias and serve as reservoirs. experimentally, two tick species, dermacentor variabilis and amblyomma americanum, have demonstrated the ability to transm ...201021071149
ehrlichia ewingii infection and exposure rates in dogs from the southcentral united states.we used pcr and a novel serologic assay to determine infection and exposure rates to ehrlichia ewingii in dogs from an area of northeast oklahoma and northwest arkansas where amblyomma americanum ticks are abundant. of 143 dogs assayed, 13 (9.1%) harbored e. ewingii by pcr and 64 (44.8%) had antibodies to e. ewingii detected using a peptide-based microtiter plate elisa. dogs were more likely (p=0.001) to be positive by pcr if sampled in august (30.8%) but no association was found between seropos ...201020541322
a molecular and serologic survey of ehrlichia canis, e. chaffeensis, and e. ewingii in dogs and ticks from oklahoma.polymerase chain reaction and southern hybridization were used to survey for the presence of ehrlichia canis, ehrlichia chaffeensis, and ehrlichia ewingii in blood samples of 65 dogs that harbored ticks from northcentral and northeastern oklahoma. dog blood samples were also examined for antibodies against e. canis and e. chaffeensis, using an immunofluorescent antibody test. ten of 65 dogs (15.4%) examined were positive for ehrlichia spp. by pcr. four (6.2%) were positive for e. ewingii, 2 (3.1 ...19989831955
ticks and tick-borne diseases in oklahoma.tick-borne diseases are common in oklahoma, especially the eastern part of the state where tick prevalence is highest. three species of hard ticks are present in oklahoma that are known vectors of human disease--the american dog tick (rocky mountain spotted fever; rmsf), the lone star tick (ehrlichiosis) and the black-legged tick (lyme disease). oklahoma consistently ranks among the top states in numbers of reported rmsf cases, and ehrlichiosis may be as prevalent as rmsf. although lyme disease ...19989828526
short report: geographic distribution of different genetic types of ehrlichia chaffeensis.the 120-kd protein gene of ehrlichia chaffeensis was used to characterize ehrlichial dna from seven pools of adult amblyomma americanum ticks. ticks from missouri, kentucky, and north carolina contained e. chaffeensis dna of the arkansas strain genotype. ticks from north carolina also contained ehrlichiae of the sapulpa strain genotype, originally identified in oklahoma.19979230803
new version of lstsim for computer simulation of amblyomma americanum (acari: ixodidae) population dynamics.a previous version of lone star tick simulation model (lstsim) for a wildlife ecosystem was revised and expanded to include a beef cattle forage area and improved handling of tick-host-habitat interactions. relationships between environmental and biological variables were also refined in the new version. general validity of the revised model was established by comparing simulated and observed host-seeking populations of amblyomma americanum (l.) at five geographic locations, three in oklahoma an ...19938254630
control of the lone star tick in oklahoma parks through vegetative management. 19817320314
area control of larvae of the lone star tick (acari: ixodidae) with acaricides. 19836186711
environmental alteration in recreational areas by mechanical and chemical treatment as a means of lone star tick control. 19705441234
the ecology and behavior of the lone star tick (acarina: ixodidae). i. the relationship between vegetative habitat type and tick abundance and distribution in cherokee co., oklahoma. 19715118876
spotted fever group rickettsiae in the lone star tick, amblyomma americanum (acari: ixodidae). 19863772952
computer simulation of area-wide management strategies for the lone star tick, amblyomma americanum (acari: ixodidae). 19873669024
susceptibility of amblyomma americanum to natural and experimental infections with theileria hundred fifty amblyomma americanum were examined between march and september 1986 from cookson hills wildlife refuge in eastern oklahoma (usa). of these ticks, 11% (17 of 150) were infected with theileria cervi. field-collected nymphal ticks had an 8% (3 of 37) prevalence of infection averaging 1.0 infected acini/nymph. female ticks had a 16% prevalence of infection averaging 1.6 infected acini/female; t. cervi was not observed in salivary glands of field-collected male ticks. when laborator ...19883193564
trypanosomes in amblyomma americanum from oklahoma. 1976978370
Displaying items 1 - 14 of 14