| morphology and transmission of theileria recondita (theileriidae: sporozoa) isolated from haemaphysalis punctata from north wales. | adult haemaphysalis punctata (canestrini and fanzago 1877) collected from an area of rough grazing at mynydd mawr, aberdaron, north wales, transmitted theileria recondita (wales); field-collected nymphs failed to transmit this parasite. following adult tick infestation, piroplasms were first observed in the blood of splenectomised infested sheep 8 days after tick attachment; the parasitaemia lasted 9 days. the parasite can also be transferred by syringe passage of blood from splenectomised to no ... | 1988 | 3138810 |
| pathogenesis of infection with theileria recondita (wales) isolated from haemaphysalis punctata from north wales. | the pathogenicity of theileria recondita infection in both splenectomised and non-splenectomised sheep was investigated. following transmission of t. recondita to splenectomised animals both by adult ticks and blood transfusion a fever and severe macrocytic hypochromic anaemia developed which lasted the 9 days or more of patent infection. the prepatent period following tick attachment was about 8 days, but was variable following blood transfusion. infection of normal animals caused a transient m ... | 1988 | 3138811 |
| haemaphysalis punctata and ixodes ricinus in a coastal habitat in north wales. | the populations of haemaphysalis punctata and ixodes ricinus on the mynydd mawr national trust reserve, gwynedd, were studied for two years. h. punctata was the more numerous species, being recoverable by blanket dragging over most of the year except for some very short days. there were spring and late summer peaks of activity. it seems probable that the complete life cycle of h punctata takes two or three years in this habitat. the activity of i ricinus was short relative to h punctata, but spr ... | 1981 | 7244372 |
| investigations on babesia motasi isolated from wales. | a number of observations were carried out on the effect of the newly isolated parasite, babesia motasi (wales) on intact and splenectomised sheep and on a splenectomised goat. the parasite was not pathogenic for intact animals but caused fever and anaemia in splenectomised ones. b motasi (wales) was also studied morphologically, morphometrically and serologically. the common form of the parasite was seen to be a double pyriform, the mean length of one side being 2.23 micrometer. it appeared to b ... | 1981 | 7323470 |
| distribution of borrelia burgdorferi s.l. spirochaete dna in british ticks (argasidae and ixodidae) since the 19th century, assessed by pcr. | the distribution of borrelia burgdorferi sensu lato, the lyme borreliosis agent, was surveyed in british ticks in the collection of the natural history museum, london. alcohol-preserved specimens of eight species of ticks known to attack humans were studied: ixodes ricinus, i. hexagonus, i. uriae, i. trianguliceps, dermacentor reticulatus, haemaphysalis punctata, rhipicephalus sanguineus and argas vespertilionis. the sample comprised all life stages and originated from a wide range of host speci ... | 1998 | 9513944 |