Results 131 to 140 of about 1,232 (170)

Inheritance of weight in Rhipicephalus appendiculatus ticks (Acari: Ixodidae) in the laboratory

Experimental and Applied Acarology, 1996
A selection of the 10% lightest and 10% heaviest males and females of a population of individually weighed Rhipicephalus appendiculatus Neumann adults was made in two experiments. The offspring of homologous pairs were followed until the next adult stage (light x light, control x control and heavy x heavy).
Madder, M., Torreele, G., Berkvens, D.
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Integument and Sensillum Auriforme of the Opisthosoma of Rhipicephalus appendiculatus (Acari: Ixodidae)

Journal of Medical Entomology, 1996
The opisthosomal integument and sensilla auriformia of Rhipicephalus appendiculatus Neumann larvae, nymphs, females and males, both unfed, fed, and during molt, were examined by light and electron microscopy in relation to semiochemical production. The integument consists of epidermis, endocuticle, exocuticle, epicuticle, a superficial wax layer and a ...
Walker, Alan R., Lloyd, Carolyn M., McGuire, Kirsty, Harrison, Scott J., Hamilton, J. G.C.   +4 more
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Geographic variation in diapause response of adult Rhipicephalus appendiculatus ticks

Experimental & Applied Acarology, 2002
Diapause in adults of the African brown ear tick Rhipicephalus appendiculatus is dependent on latitude and stock origin. Lower latitude populations, that is, those nearer the equator, show no diapause response to long or short day exposure. Diapause response to short daylengths is found in higher latitude populations, further south, and increases with ...
Madder, M., Speybroeck, N., Brandt, J., Tirry, L., Hodek, I., Berkvens, D.   +5 more
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In vitro growth of tick tissues (Rhipicephalus appendiculatus neumann, 1901)

Experimental Parasitology, 1962
Abstract 1. 1. The medium, in which initial outgrowths and long survival of several kinds of tick tissue cells occurred, contained Hanks' balanced salt solution, amino acids and vitamins of Eagle's basal medium together with 20% ox serum. 2. 2.
H M, MARTIN, B O, VIDLER
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Transmission ofTheileria lawrencei (Serengeti) by the ixodid tick,Rhipicephalus appendiculatus

Tropical Animal Health and Production, 1973
The transmission by the tickRhipicephalus appendiculatus ofTheileria lawrencei (Serengeti) from buffalo to cattle, and thence between cattle, is described. Buffalo were shown to act as carriers ofT. lawrencei (Serengeti) piroplasms infective for ticks for up to 26 months. Tick transmission ofT. lawrencei (Serengeti) from buffalo to cattle was efficient,
A S, Young, R E, Purnell
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Cyclic development and longevity of Theileria parva in the tick Rhipicephalus appendiculatus

Experimental Parasitology, 1964
Full details of the technical methods evolved in the study of Theileria parva in the tick Rhipicephalus appendiculatus are described. Stages of T. parva discovered in intestinal contents, gut epithelial cells, and the cells of the salivary glands are fully described.
H M, MARTIN, S F, BARNETT, B O, VIDLER
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Resistance Between Stages of the Tick Rhipicephalus appendiculatus (Acari: Ixodidae)

Journal of Medical Entomology, 1990
The ability of one stage of Rhipicephalus appendiculatus Neumann to induce resistance in a host to the feeding of the next stage in the life cycle was studied using Bos taurus cattle and rabbits. Simple resistance within a stage and cross-resistance between stages was generally less than 50%.
A R, Walker, J D, Fletcher, L, Todd
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Variation in body size in the tick complex Rhipicephalus appendiculatus/Rhipicephalus zambeziensis.

Journal of vector ecology : journal of the Society for Vector Ecology, 2005
We examined the relationship between body size and the phenology of the tick complex Rhipicephalus appendiculatus/Rhipicephalus zambeziensis. These ticks transmit Theileria parva in cattle. In Africa, the body size of R. appendiculatus increases with latitude while the body size of the morphologically similar Rhipicephalus zambeziensis is constant at ...
Speybroeck, N., Madder, M., Thulke, H. H., Mtambo, J., Tirry, L., Chaka, G., Marcotty, T., Berkvens, D.   +7 more
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Artificial-membrane feeding of the ixodid tick,Rhipicephalus appendiculatus, to repletion

Experimental & Applied Acarology, 1991
An artificial feeding device was constructed with a Baudruche membrane bearing olfactory and tactile stimuli, to induce voluntary attachment and feeding of the brown ear tick, Rhipicephalus appendiculatus. Preparation of the membrane and experimental conditions used are described. Unfed adults of R.
S M, Waladde, S A, Ochieng', P M, Gichuhi   +2 more
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Cutaneous responses of cattle to extracts from Rhipicephalus appendiculatus larvae

Veterinary Parasitology, 1984
A component of an extract from Rhipicephalus appendiculatus larval ticks induced an immediate hypersensitivity reaction in sensitized cattle when intra-dermally inoculated. Generally, the magnitude of the cutaneous reaction depended upon the duration of exposure of the cattle to tick infestation.
M G, Binta, M P, Cunningham
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