Dermacentor

Normal Routes of Exposure Inhalation Ingestion Abraded skin Mucous membranes Vectors (ticks—Dermacentor reticulates-, Dermacentor marginatus Ixodes persulcatus). 

Normal Routes of Exposure Ingestion Abraded skin Vectors (ticks—Ixodes ricinus, Dermacentor marginatus). 

Ineffective at 3 mg/kg BW against fever ticks (Boophilus annulatus, B. microlopus) and the American dog tick (Dermacentor variabilis). At 5 mg/kg BW, famphur was effective (87-97%) against fever ticks but ineffective against the dog tick. At the highest daily release rate, famphur was 100% effective against fever ticks between days 12 and 41, but remained ineffective against the dog tick... 

Sonenshine DE, Taylor D, Corrigan G (1985) Studies to Evaluate the Effectiveness of Sex Pheromone-Impregnated Formulations for Control of Populations of the American Dog Tick, Dermacentor variabilis (Say) (Acari Ixodidae). Exp Appl Acarol 1 23... 

TABLE V, Control of Adults and Nymphs (test 1 only) of Five Species of Three-host Ticks (Amblyomma, Dermacentor, Rhipicephalus spp. on Cattle Given Daily Oral or Subcutaneous Treatment with MK-933 "Reproduced with permission in part from ref. 16. Copyright 1981, J. Econ. Entomol., Entomological Society of America. "... 

Rhipicephalus sanguineus. Dermacentor variabilis, D. reticulatus, Ixodes... 

Xu. G.. Fang, Q. Q., Keirans, J. R and Durden, L. A, (2003). Cloning and sequencing of putative acetylcholinesterase cDNAs from the American dog tick, Dermacentor variabilis. and the brown dog tick, Rhipicephaius sanguineus (Acari Ixodidae)../. Med. EntomoL 40, 890-896. 

Parker RR, Spencer RR. Hereditary transmission of tularemia infection by the wood tick Dermacentor andersoni Stiles. Public Health Reports. 1926 41 1403-1407. 

Noguchi H. A filter-passing infectious agent obtained from Dermacentor andersoni. J Exp Med. 1926 44 1-10. 

Rocky mountain wood tick, Dermacentor andersoni, 285... 

Tularaemia results from systemic infection with the gram-negative bacteria Francisella tularensis. Wild rodents (in particular, hares) and other small-animal populations are the main reservoir of infection. In humans, most cases are sporadic, related to tick bites (Dermacentor) or direct contact with infected animals. Hunters are at greatest risk, but the disease also affects butchers, farmers, foresters, laboratory workers and veterinarians (Evans et al. 1985). The incubation period varies from 1 day to 10 days. The clinical manifestation is usually an ulcerated nodule at the point of inoculation, associated with enlargement and, later, breakdown of lymph nodes. Systemic symptoms and toxaemia may be severe. Minocycline is considered to be efficacious in most cases (100 mg twice per day for 4 weeks). 

Derivatization, 44,1073,1074,1105,1185,2083 Derivatized BR (brassinosteroids), 3859 Dermacentor reticulatus, 4071 Dermal toxicity, 4099 Dermatitis, 3087, 3094 Desacetoxyvindoline-4-hydroxylase (D4H), 587... 

Sonenshine, D. E., and G. Esch. 1970. Radio-labeling Dermacentor variabilis with strontium-90 and strontium-90 plus carbon-14 mixtures. J. Econ. Entomol. 63(5) 1635-1638. 

Sheele JM, Byers PA, Sonenshine DE. Initial assessment of the ability of ivermectin to loll Ixodes scapularis and Dermacentor variabilis ticks feeding on humatts. Wilderness Environ Med 2013 24 48-52. 

Blocking the action of thrombin prevents conversion of fibrinogen to fibrin (52). Thrombin inhibitors are produced by the salivary glands of Ixodes holocyclus 61), Ixodes ricinus 62), A. americanum 63), and 0. savignyi 64). Dermacentor andersoni salivary glands contain inhibitors of factor V, an integral part of the complex with Xa that converts prothrombin to thrombin, and factor Vn, a component of the extrinsic pathway 65). Omithodoros moubata produces inhibitor of the intrinsic pathway component,... 

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