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The Rocky Mountain Wood tick (Dermacentor andersoni) has a similar appearance to the American Dog tick but can be distinguished by its bright reddish, tear drop shaped body (Dog ticks are more dark brown). Females will have a white colored shield and males will have gray and white spots on their body.
- Black-legged tick or deer tick. The black-legged tick, also known as the deer tick, is mainly found in the eastern half and Midwest region of the U.S. The scientific name for this tick is Ixodes scapularis.
- Lone Star tick. The Lone Star tick is mainly found in the Southern and Eastern U.S. Its scientific name is Amblyomma americanum. The Lone Star tick can spread
- Alpha-gal syndrome and the Lone Star tick. Bites from the Lone Star tick can sometimes lead to alpha-gal syndrome, which is associated with a meat allergy.
- American dog tick. The American dog tick is mainly found east of the U.S. Rocky Mountains. The scientific name for this tick is Dermacentor variabilis. The American dog tick also is found in some areas of the Pacific Coast.
The Rocky Mountain Wood tick (Dermacentor andersoni) has a similar appearance to the American dog tick but can be distinguished by its bright red, tear drop shaped body. Females will have a white colored shield and males will have gray and white spots on their body.
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What types of ticks carry R rickettsii?
- Introduction
- Distribution
- Description
- Life Cycle
- Seasonality
- Medical and Veterinary Importance
- Removal
- Management
- Selected References
Dermacentor variabilis (Say), also known as the American dog tick or wood tick, is found predominantly in the United States, east of the Rocky Mountains, and as its name suggests, is most commonly found on dogs as an adult. The tick also occurs in certain areas of Canada, Mexico and the Pacific Northwest of the U.S. (Mcnemee et al. 2003). Dermacent...
The American dog tick is widely distributed in the United States east of a line drawn from Montana to South Texas. It is also found in Canada, east of Saskatchewan, and in California, west of the Cascade and the Sierra Nevada Mountain ranges. This species is most abundant in the eastern United States from Massachusetts south to Florida but is also ...
The 8-legged adult male and female D. variabilisticks are typically brown to reddish-brown in color with gray/silver markings on their scutum (dorsal "shield"). The female will vary in size depending on whether or not it has blood fed. Unfed females are typically 5 mm long and are slightly larger than males, which are about 3.6 mm long. Females can...
Dermacentor variabilisdevelops from the egg stage, to the 6-legged larva, to the 8-legged nymph, and finally to the adult. The cycle requires a blood meal before progression from larva to nymph, from nymph to adult and by the adult for egg production. This cycle also requires three different hosts and requires at least 54 days to complete, but can ...
Adult American dog ticks overwinter in the soil and are most active from around mid-April to early September. Larvae are active from about March through July and nymphs are usually found from June to early September (Goddard 1996). In northern areas, such as Massachusetts and Nova Scotia, adults appear from April to August with a peak in May and Ju...
The American dog tick is the primary vector for the pathogen causing Rocky Mountain spotted fever (RMSF), although it is also known to transmit the causative agent of tularemia and can cause canine tick paralysis. First discovered in the late 19th century in the Rocky Mountain region, RMSF is more commonly reported in eastern U.S. Rickettsia ricket...
Ticks should not be removed by handpicking because infected tick secretions can be transferred from a person's hands to his or her eyes, mucous membranes, mouth, etc. Therefore, forceps should be used when removing a tick (Smith and Whitman 1992). To properly remove a tick, grasp the mouthparts near the attachment site firmly with tweezers. Once th...
The American dog tick occurs primarily in wooded, shrubby and long-grass areas. However, it is possible for residential areas to support populations of this tick. Shrubs, weeds, tall grass, clutter and debris on the property attracts the rodents that are hosts for immature ticks. By maintaining grass short, removing possible rodent harborages, and ...
Burg JG. 2001. Seasonal Activity and spatial distribution of host-seeking adults of the tick Dermacentor variabilis. Medical and Veterinary Entomology 15: 413-421.Campbel A. 1979. Ecology of the American dog tick, Dermacentor variabilisin southwestern Nova Scotia. Recent Advances in Acarology. Rodriguez JG (editor). Volume 2: 135-143.Carroll JF, Nichols JD. 1986. Parasitization of meadow voles, Microtus pennsylvanicus (Ord), by American dog ticks, Dermacentor variabilis(Say), and adult tick movement during high host density. Jo...CDC 2019. Rocky Mountain Spotted Fever (RMSF). https://www.cdc.gov/rmsf/index.html. (30 March 2021)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.
Jun 1, 2023 · Four types of ticks carry R. rickettsii: the American dog tick, Rocky Mountain wood tick, Lonestar tick, and brown dog tick. The American dog tick is the primary RMSF tick vector...
