Results 181 to 190 of about 19,409 (219)

Kadam virus: Neutralization studies and laboratory transmission by dermacentor variabilis

Transactions of the Royal Society of Tropical Medicine and Hygiene, 1972
Abstract By neutralization test, Kadam virus, originally isolated from ticks (Rhipicephalus pravus) collected from a cow in Uganda, is distinct from 39 other group B viruses and in particular shows no close relationship to members of the TBE complex. Attempts to infect mosquitoes (Aedes aegypti) and mosquito cell lines (Ae.
W N, Mugo, R E, Shope
openaire   +2 more sources

Persistence of colonies of Anaplasma marginale in overwintering Dermacentor variabilis

American Journal of Veterinary Research, 1987
SUMMARY Dermacentor variabilis were infected as nymphs with Anaplasma marginale by allowing the ticks to feed on a single infected donor calf. Two weeks after molting to the adult stage, the ticks were allotted into 1 of 3 groups and were allowed to overwinter at room temperature (25 C) in the laboratory (group 1), cold storage (4.5 C) in the ...
T M, Logan, K M, Kocan, W, Edwards, J A, Hair, P L, Claypool, S A, Ewing   +5 more
openaire   +2 more sources

Characterization of Dermacentor variabilis Molecules Associated with Rickettsial Infection

Annals of the New York Academy of Sciences, 2006
Abstract:  To ultimately define the virulence factors of rickettsiae, an understanding of the biology of the organism is essential. Comprehension of the pathogen–human interaction is critical to the development of control measures; and, in the case of vector‐borne diseases, the role of the vector in maintaining and transmitting pathogens to vertebrate
Kevin R, Macaluso, Albert, Mulenga, Jason A, Simser, Abdu F, Azad   +3 more
openaire   +2 more sources

Supercooling Points of Adult Dermacentor variabilis (Acari: Ixodidae) From a Population Near the Northern Distribution Limit

Journal of medical entomology, 2020
The northern distributional limit of Dermacentor variabilis Say, the American dog tick, is expanding in Saskatchewan and Manitoba (western Canada). The ability of D.
M. E. Yunik, N. Chilton
semanticscholar   +1 more source

The Distribution in Oregon of Ixodes Pacificus, Dermacentor Andersoni, and Dermacentor Occidentalis with a Note on Dermacentor Variabilis (Acarina: Ixodidae)

Journal of Medical Entomology, 1977
Numerous tick collections from areas throughout Oregon between 1967 and 1975 have clarified the distribution of 3 man-biting species, Ixodes pacificus, Dermacentor andersoni , and D. occidentalis . Additional unpublished Oregon records at the Rocky Mountain Laboratory are included (a total of 11,839 ticks) to give full county (spatial) and monthly ...
E R, Easton, J E, Keirans, R A, Gresbrink, C M, Clifford   +3 more
openaire   +2 more sources

Optimal sampling and spatial distribution of Ixodes pacificus, Dermacentor occidentalis and Dermacentor variabilis ticks (Acari: Ixodidae)

Experimental & Applied Acarology, 1998
A common method for sampling tick populations is flagging, which is a method of dragging a white cloth over a plant substrate for a fixed distance along a transect. Flagging over rough physical surfaces or using long subtransect lengths could lead to the underestimation of tick densities.
X, Li, J E, Dunley
openaire   +2 more sources

Common yarrow (Achillea millefolium) essential oil and main components as potential repellents and acaricides against Ixodes scapularis and Dermacentor variabilis (Acari: Ixodidae) ticks

Experimental & applied acarology, 2023
L. J. Pickett, Miranda Amiro, Claire Hawboldt, N. Faraone   +3 more
semanticscholar   +1 more source

Population Genetics of Dermacentor variabilis Say 1821 (Ixodida: Ixodidae) in the United States Inferred From ddRAD-seq SNP Markers

Annals of the Entomological Society of America, 2019
Dermacentor variabilis Say is a tick species widely distributed in North America, where it is a common pest, and acts as vector for many tick-borne pathogens that affect both humans and livestock. In the United States, D.
P. Lado, C. Cox, Kya Wideman, Andrea Hernandez, H. Klompen   +4 more
semanticscholar   +1 more source

Prevalence of Francisella tularensis in Dermacentor variabilis Ticks, Minnesota, 2017

Vector Borne and Zoonotic Diseases, 2019
Introduction: The prevalence of Francisella tularensis in Minnesota ticks is unknown. Ticks collected at seven sites were tested to determine the infection prevalence of F. tularensis in Dermacentor variabilis in Minnesota.
Tory V Whitten, Courtney K. Demontigny, J. Bjork, Mandy Foss, Molly Peterson, J. Scheftel, D. Neitzel, Maureen Sullivan, Kirk E. Smith   +8 more
semanticscholar   +1 more source

Extension of the Range of Dermacentor variabilis (Acari: Ixodidae) in Pennsylvania

Journal of Medical Entomology, 1993
The American dog tick, Dermacentor variabilis (Say), until recently was recorded only from the southeastern and southwestern counties of Pennsylvania. Since 1968, this species has expanded its range and is reported from 63 of Pennsylvania's 67 counties.
R, Snetsinger, S B, Jacobs, K C, Kim, D, Tavris   +3 more
openaire   +2 more sources