American dog tick, light micrograph

American dog tick, light micrograph

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Caption: American dog tick (Dermacentor variabilis), light micrograph (LM) from a whole mount. This species, also known as the wood tick, is known to carry bacteria responsible for several diseases in humans, including Rocky Mountain spotted fever (RMSF) and tularemia. RMSF is a potentially fatal rickettsial disease of dogs and humans caused by the intracellular bacterium Rickettsia rickettsii. The pathogen has been reported throughout the USA, Central and South America. Diseases are spread when it sucks blood from the host. It can then take several days for the host to experience some symptoms. Magnification: x12 when printed at 10cm wide.

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Keywords: acari, american, animal, arachnid, arachnids, black background, blood, carrier, colored, coloured, condition, dermacentor, disease, disorder, dog, ectoparasite, false-colored, false-coloured, fauna, fever, head, human, invertebrate, invertebrates, ixodida, ixodidae, light micrograph, lm, micrograph, mountain, mouth, mouthpart, mouthparts, paralysis, parasite, parasitic, parasitiformes, pest, piercing, rickettsia, rocky mountain spotted fever, spotted, sucking, tick, ticks, tularemia, variabilis, vector, ventral, wildlife, wood

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