hyalomma dromedarii (h. dromedarii) is a very characteristic tick with a cosmopolitan distribution, which is closely associated with camels. it is well adapted to extreme dryness of habitat and to camel hosts. in this study, we studied rural husbandry of one-humped camels (dromedaries) in a village in south-west of semnan (biabanak). a total of 163 ticks (94 adults and 67 nymphs) were found on ...

background: ehrlichiosis is an emerging tick-borne zoonotic disease caused by the family of anaplasmatacea. re­cently, outbreak of human monocytic ehrlichiosis was reported in northern part of iran. besides, serological evidence of canine monocytic ehrlichiosis caused by ehrlichia canis was reported from southeastern of iran but the epidemi­ology of this disease is almost undetermined in iran. ...

background: rhipicephalus ( boophilus ) annulatus tick is one of the most important ectoparasite of cattle. re­cently, several laboratories in the world have been concentrated on immunizing cattle against tick using various types of tissue extracts of ticks. the aim of this study was to evaluate the effect of immunization of cattle with tick salivary gland extract on biological parameters of ti...

Ixodes scapularis, the black-legged tick, vectors several human pathogens including Borrelia burgdorferi, the agent of Lyme disease in North America. Pathogen transmission to the vertebrate host occurs when infected ticks feed on the mammalian host to obtain a blood meal. Efforts to understand how the tick confronts host hemostatic mechanisms and imbibes a fluid blood meal have largely focused ...

The cattle industry is one of the most important agroeconomic activities in Mexico. The national herd is estimated to include approximately 33.5. million head of cattle. Ticks and tick-borne diseases are principal factors with a negative impact on cattle health and production. The most economically important tick species parasitizing cattle in Mexico are Rhipicephalus microplus, R. annulatus, a...

To assess the endemicity of tick-borne pathogens in New Hampshire, we surveyed adult tick vectors. Pathogens were more prevalent in areas of high tick density, suggesting a correlation between tick establishment and pathogen endemicity. Infection rates in ticks correlated with disease frequency in humans.

Climate change is affecting human health worldwide. In particular, changes to local and global climate parameters influence vector water-borne diseases like malaria, dengue fever, tick-borne encephalitis. The Republic of Sakha in northern Russia no exception. Long-term trends increasing annual temperatures thawing permafrost have corresponded with the northward range expansion tick-species Repu...

In an epidemiological study undertaken on 23 farms where heartwater occurs endemically, it was found that on an overall average, antibodies to Cowdria ruminantium were detected in 64.3% of the cattle, 6 adult Amblyomma hebraeum ticks were counted per animal and 7.0% of ticks were infected with the heartwater agent. It was found that the seropositivity of the animals was determined largely by th...

Identifying the factors that influence the species diversity and distribution of ticks (Acari: Ixodida) across vertebrate host taxa is of fundamental ecological and medical importance. Host body size is considered one of the most important determinants of tick abundance, with larger hosts having higher tick burdens. The species diversity of tick assemblages should also be greater on larger-bodi...