Aeschlimann A. Ixodes ricinus, Linn6, 1758 (Ixodoidea; Ixodidae). Essai pr6liminaire de synthese sur la biologie de cette espece en Suisse. Acta Trop (Basel) 1972;29:321-40. 2 Golding D, Champion RH, Rook A, Roberts SOB. Erythema chronicum migrans in Britain. Br Med J 1978 ;ii :1087. 3 Steere AC, Malawista SE, Snydan DR, Andiman WA. A cluster of arthritis in children and adults in Lyme Connecti...

Carbon dioxide (CO(2) ), 1-octen-3-ol, acetone, ammonium hydroxide, L-lactic-acid, dimethyl trisulphide and isobutyric acid were tested as attractants for two tick species, Amblyomma americanum and Dermacentor variabilis (Acari: Ixodidae), in dose-response bioassays using Y-tube olfactometers. Only CO(2) , acetone, 1-octen-3-ol and ammonium hydroxide elicited significant preferences from adult ...

Tumour necrosis factor (TNF) plays a central role in the inflammatory process. In the skin, it contributes to immune containment of tick-transmitted pathogens like Borrelia burgdorferi. In the saliva of some tick species, active compounds are present that inhibit detection of TNF in specific ELISA. We compared the presence of anti-TNF activity in saliva or salivary gland extract from 11 tick sp...

Eight commercial insect repellents were tested against Ornithodoros parkeri (Acari: Argasidae), Dermacentor variabilis (Acari: Ixodidae), Aedes aegypti (Diptera: Culicidae), and Xenopsylla cheopis (Siphonaptera: Pulicidae). Patterns of tolerance to the test materials were distinctive for each test species. Levels of tolerance were coded as character state 0 (sensitive), 1 (intermediate), or 2 (...

KEIRANS, J.E., WALKER, JANE B. , HORAK, I. G. & HEYNE, HELOISE 1993. Rhipicephalus exophthalmos sp . nov., a new tick species from southern Africa, and redescription of Rhipicephalus oculatus Neumann , 1901 , with which it has hitherto been confused (Acari: lxodida: Ixodidae) . Onderstepoort Journal of Veterinary Research , 60: 229246 Rhipicephalus exophthalmos sp . nov ., a species which has i...