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a genus of ticks parasitic on various animals, and vectors of disease-producing microorganisms.
Dermacentor anderso´ni a species of tick common in the western United States, parasitic on numerous wild mammals, most domestic animals, and humans. It is a vector of Rocky Mountain spotted fever, tularemia, Colorado tick fever, and Q fever in the United States, and is the cause of tick paralysis.
Dermacentor varia´bilis the chief vector of Rocky Mountain spotted fever in the central and eastern United States, the dog being the principal host of the adult forms, but also parasitic on cattle, horses, rabbits, and humans.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
the wood tick; the vector of Rocky Mountain spotted fever; also transmits tularemia and causes tick paralysis; there are characteristic black and white markings on the large scutum of the male.
Farlex Partner Medical Dictionary © Farlex 2012
tickMedical entomology A hematophagous ectoparasitic arthropod of the superfamily Ixodoidea, which is either a hard tick–family Ixodidae or a soft tick–family Argasidae; ticks may be vectors of bacterial and viral infections. See Colorado tick fever, Deer tick, Lone Star tick, Lyme disease, Rocky Mountain spotted fever.
Ticks of interest
Dermacentor andersoni, the North America vector, Rocky Mountain spotted fever–RMSF, Colorado tick fever–CTF, tularemia and tick paralysis
D marginatus Asian vector–Russian spring-summer fever virus, tick-borne encephalitis virus, possibly also Congo-Crimean hemorrhagic fever virus and Babesia reservoir for Omsk hemorrhagic fever virus
D occidentalis West coast North America–presumed vector for RMSF, CTF
D parumapertus Southwestern US–vector for RMSF, CTF
D variabilis Eastern US–vector for RMSF, tularemia, CTF, and tick paralysis; Asian and African ticks, vectors of Rickettsialpox
Ixodes dammini Northern deer tick–vector, Babesia microti, Lyme disease agent
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.