Adult females of the blacklegged tick, Ixodes scapularis (Acari: Ixodidae), were collected from a North American porcupine, Erethizon dorsatum, in eastern Ontario, Canada. This porcupine parasitism indicates that an established population I. is present local vicinity. tick species known to parasitize more than 150 different vertebrate hosts, including porcupine. The presence ticks parasitizing ...

The genus Anaplasma (Rickettsiales: Anaplasmataceae) includes obligate tick-transmitted intracellular organisms, Anaplasma phagocytophilum and Anaplasma marginale that multiply in both vertebrate and tick host cells. Recently, we showed that A. marginale affects the expression of tick genes that are involved in tick survival and pathogen infection and multiplication. However, the gene expressio...

this study was conducted during 3 years period (2002-2004). tick sampling was carried out randomly from domestic animals during seasonal activity of ticks from different parts of iran. 2170 ticks from 151 cattle, 629 sheep, 336 goats and 33 camels were collected. the occurance of tick infestation in cattle, sheep, goats and camels was 60%, 71.4%, 53% and 46 % respectively. sampled ticks of rhip...

BACKGROUND Tick-borne rickettsioses are caused by obligate intracellular bacteria belonging to the spotted fever group (SFG) rickettsiae. Although Spotted Fever is prevalent in the Middle East, no reports for the presence of tick-borne pathogens are available or any studies on the epidemiology of this disease in the West Bank. We aimed to identify the circulating hard tick vectors and genetical...

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Ticks require blood meal to complete development and reproduction. Multifunctional tick salivary glands play a pivotal role in tick feeding and transmission of pathogens. Tick salivary molecules injected into the host modulate host defence responses to the benefit of the feeding ticks. To colonize tick organs, tick-borne microorganisms must overcome several barriers, i.e., tick gut membrane, ti...

to assess hard ticks population on sangsari sheep breed under the effect of weather’s parameters such as duration of sun shine, humidity, ambient temperature, altitude, 5% of a flock (almost 1000 sheep in mountains and fields of semnan and tehran provinces) were randomly separated and were observed monthly. during a year, a total of 1505 hard ticks (635 females and 870 males) containing dermace...

BACKGROUND Understanding and quantification of the risk of Lyme borreliosis after a tick bite can aid development of prevention strategies against Lyme borreliosis. METHODS We used 3,525 single tick bite reports from three large prospective studies on the transmission risk of tick-borne pathogens to humans, with 50 reports of Lyme borreliosis during the follow-up period, among 1,973 reports w...

The degree of plasticization of the alloscutal cuticle of a 'hard' (ixodid) tick, Amblyomma hebraeum, and a 'soft' (argasid) tick, Ornithodoros moubata, was assessed throughout the blood-feeding period. Cuticle viscosity was calculated from rate of creep of cuticle under constant load using a Maxwell model. Feeding-related plasticization (i.e. increased rate of extension under a constant load) ...

Ticks and tick transmitted infectious agents are increasing global public health threats due to abundance, expanding geographic ranges of vectors pathogens, emerging tick-borne agents. Greater understanding tick, host, pathogen interactions will contribute development novel control disease prevention strategies. Tick-borne pathogens adapt in multiple ways very different vertebrate host environm...