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Dermacentor variabilis, also known as the American dog tick or wood tick, is a species of tick that is known to carry bacteria responsible for several diseases in humans, including Rocky Mountain spotted fever and tularemia (Francisella tularensis). It is one of the best-known hard ticks. Diseases are spread when it sucks blood from the host.
Woodtick or wood tick is the common name for several ticks, including: Dermacentor variabilis, also known as the American dog tick; Dermacentor andersoni, ...
Dogs and medium-sized mammals are the preferred hosts of an adult American dog tick, although it feeds readily on other large mammals, including human beings. This tick is the most commonly identified species responsible for transmitting R. rickettsii to humans.
The American dog tick (Dermacentor variabilis), mainly found in the eastern United States, is the most common vector for R. rickettsii. The Rocky Mountain wood tick ( Dermacentor andersoni ), found in the Rocky Mountain States, and the brown dog tick ( Rhipicephalus sanguineus ) , found in select areas of the southern United States, are also ...
Long Star ticks are generally found in the West, but they've recently made the jump to the East Coast, too. Ticks have been documented transmitting a wide range of protozoan, bacterial, viral, and ...
Ticks are external parasites, living by feeding on the blood of mammals, birds, and sometimes reptiles and amphibians. The timing of the origin of ticks is uncertain, though the oldest known tick fossils are from the Cretaceous period, around 100 million years old. Ticks are widely distributed around the world, especially in warm, humid climates.
Haemaphysalis (Ha. leachii, the yellow dog tick of the tropics). Dermacentor (Dermacentor andersoni, the Rocky Mountain wood tick; Dermacentor variabilis, the American dog tick; D. reticulatus, the ornate dog tick of Europe). D. nitens, the tropical horse tick of the Americas, has a one-host lifecycle similar to the boophilids.
Many other types of ticks may feed on the cats, but the only other tick that has been shown to transmit the organism is the American dog tick (Dermacentor variabilis) but only in a research setting. [2] [5] [10] In the past, domestic cats were thought to always die from infection so they were considered terminal hosts or "dead end hosts". [4]