Results 121 to 130 of about 1,181 (156)

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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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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Skin test to detect resistance of cattle to Rhipicephalus appendiculatus ticks

Medical and Veterinary Entomology, 1990
Abstract. The evaluation of a skin test to detect acquired resistance to Rhipicephalus appendiculatus Neumann ticks is described. An extract of salivary glands of partially fed female R.appendiculatus was prepared by dissection ...
A R, Walker, J D, Fletcher
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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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Predation of free-living engorged femaleRhipicephalus appendiculatus

Experimental & Applied Acarology, 1991
In experiments done over a period of 1 1/2 years using engorged female Rhipicephalus appendiculatus tethered in a grass plot, 42% predation was observed in long grass (40-60 cm), and 36% in short grass (6-10 cm). Deaths due to environmental factors were 4.8% and 6.8% in long and short grass, respectively.
Mwangi Esther N, Newson RM., Kaaya Godwin P.   +2 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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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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Transmission of Theileria parva bovis by nymphs of Rhipicephalus appendiculatus

Preventive Veterinary Medicine, 1993
Abstract Theileria parva bovis (a protozan causing January disease of cattle in Zimbabwe) was transmitted experimentally by nymphs of the tick Rhipicephalus appendiculatus to six of 14 cattle. Animals either became seriously ill or did not become infected. Attempts to induce mild or inapparent infection by reducing the number of infecting nymphs were
H.T. Koch, L. Kambeva, R.A.I. Norval, J.G.R. Ocama, F.C. Munatswa   +4 more
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Effects of anti-tick cocktail vaccine against Rhipicephalus appendiculatus.

The Japanese journal of veterinary research, 2008
Rhipicephalus appendiculatus serpin-3 (RAS-3), R. appendiculatus serpin-4 (RAS-4) and a 36-kDa immuno-dominant protein of R. appendiculatus (RIM36) were reported as candidate antigens for the anti-tick vaccine to control ixodid ticks. In the present study, we generated recombinant proteins of RAS-3 (rRAS-3), RAS-4 (rRAS-4) and RIM36 (rRIM36), and ...
Imamura, Saiki, Konnai, Satoru, da Silva Vaz, Itabajara Junior, Yamada, Shinji, Nakajima, Chie, Ito, Yuko, Tajima, Tomoko, Yasuda, Jun, Simuunza, Martin, Onuma, Misao, Ohashi, Kazuhiko   +10 more
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