Rhipicephalus sanguineus

Latreille, 1806

Brown Dog Tick, Kennel Tick, Pantropical Dog Tick

is a hard distinguished by its ability to complete its entire indoors, a trait unusual among ixodid ticks. It is found worldwide but is most common in warmer climates. The species is a three- tick that feeds on a variety of mammals, with dogs serving as the preferred host in the United States. It is a significant of multiple affecting dogs and humans, including Ehrlichia canis, canis, rickettsii, and Rickettsia conorii.

Rhipicephalus sanguineus by (c) @dineshphotography7797, some rights reserved (CC BY), uploaded by @dineshphotography7797. Used under a CC-BY license.Rhipicephalus sanguineus by (c) Reynante Martinez, some rights reserved (CC BY), uploaded by Reynante Martinez. Used under a CC-BY license.1-s2.0-S0020751913002750-gr2 (14244675787) by Phylogeny Figures. Used under a CC BY 2.0 license.

Pronunciation

How to pronounce Rhipicephalus sanguineus: /ˌrɪpɪˈsɛfələs sæŋˈɡwɪniəs/

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Identification

Distinguished from similar ticks by its hexagonal basis capituli, reddish-brown uniform coloration without ornamentation, and elongated body shape. The indoor capability is a behavioral indicator. In the United States, it is the primary establishing sustained indoor in kennels and residences.

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Appearance

are 2.28–3.18 mm in length and 1.11–1.68 mm in width. The body is reddish-brown in color and elongated in shape. The basis capituli (the flat surface where mouthparts attach) is hexagonal. The surface lacks ornamentation.

Habitat

Domestic environments including dog kennels, residences, and peri-domiciliary areas. Unlike most hard ticks, it can complete its entire indoors, allowing establishment in colder climates. Outdoor survival is limited by macroclimatic conditions; in temperate regions, persistence depends on the sheltered microclimate provided by dog-associated .

Distribution

distribution worldwide, more common in warmer climates. Present in North America, South America, Europe, Africa, Asia, and Australia. In the United States, established occur throughout the country due to indoor . In the United Kingdom, found only in kennels as of 2010. Distribution is expanding with climate change, with autochthonous cases emerging in Hungary since 2005.

Seasonality

Activity patterns are less constrained by season than outdoor ticks due to indoor capability. In temperate regions, indoor persist year-round. Outdoor activity is limited by temperature and humidity requirements, with optimal conditions for propagation occurring at 20–30°C with high relative humidity.

Diet

Obligate blood-feeding . Larvae feed for 5–15 days, nymphs for 3–13 days, and continue blood-feeding with mating occurring on the .

Host Associations

  • Domestic dog (Canis lupus familiaris) - Preferred in the United States; required for development of large Attachment sites include , ears, back, between toes, and axilla
  • Humans - Incidental in peri-domestic environmentNot preferred but can be bitten
  • Various mammals - Alternative Will feed on wide variety of mammals when available

Life Cycle

Three- with four developmental stages: , larva, nymph, and . The can be completed entirely indoors, which is unusual among Ixodidae. Larvae feed 5–15 days, drop from host, and to nymphs after 1–2 weeks. Nymphs attach to same or different host, feed 3–13 days, drop, and develop into adults after two weeks. Adults attach to host, feed and mate; females drop to lay eggs, with up to 7,000 eggs per female. acquisition can occur at any life stage.

Behavior

Exhibits -seeking adapted to domestic environments. All postembryonic stages can tolerate critical temperature and humidity conditions for defined periods, ensuring enzootic persistence. Capable of establishing dramatic levels in kennels and residences. Becoming an increasingly significant urban pest in association with domestic dogs.

Ecological Role

for transmission of multiple pathogenic agents affecting domestic dogs and humans. include Ehrlichia canis (canine ), canis (canine ), rickettsii ( in humans), Rickettsia conorii (/boutonneuse fever), Anaplasma platys, Coxiella burnetii, Hepatozoon canis, and Mycoplasma haemocanis. The serves as a bridge between wildlife, domestic animal, and human cycles in peri-domestic environments.

Human Relevance

Major veterinary and public health concern. Causes direct harm to dogs through blood loss and irritation. Transmits serious to dogs including and . Transmits and other rickettsial diseases to humans. in homes and kennels can reach pest proportions requiring professional management. Prevention through regular , pet inspection, and environmental control is essential.

Similar Taxa

More Details

Acaricide Resistance

The has developed resistance to multiple classes of acaricides, complicating control efforts. Research is ongoing into alternative control methods including desiccant dusts (kaolin/silicate-based products), , and nanoemulsions.

Climate Adaptation

While survival and are directly proportional to relative humidity and inversely proportional to temperature, the has evolved mechanisms that allow temporary survival under critical conditions, facilitating persistence in suboptimal climates through association with sheltered domestic environments.

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Sources and further reading