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VetMed Resource

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Abstract

The development and morphology of Babesia bigemina in the gut of Boophilus microplus were studied during laboratory maintenance by: tick transmission in unsplenectomized (intact) calves; tick transmission in splenectomized calves; syringe passage at intervals of 5 days or less in splenectomized...

Author(s)
Stewart, N. P.; Dalgliesh, R. J.; Vos, A. J. de
Citation
Research in Veterinary Science, 1986, 40, 1, pp 94-98
Abstract

Pure strains of Babesia bovis, B. bigemina and Anaplasma marginale were isolated from cattle infected with all 3 species as well as a Theileria sp. and Eperythrozoon teganodes, using only transmission by the tick, Boophilus microplus. Unengorged adult ticks transferred to susceptible cattle...

Author(s)
Dalgliesh, R. J.; Stewart, N. P.
Citation
Veterinary Parasitology, 1983, 13, 4, pp 317-323
Abstract

Examples of Boophilus microplus (Can.) collected from calves in Queensland with patent infection by Anaplasma marginale were incubated at either 4--5, 14, 22, 27 or 37 deg C for up to 14 days. Extracts prepared from larvae, nymphs, immature females, adult males or mixtures of both sexes were...

Author(s)
Dalgliesh, R. J.; Stewart, N. P.
Citation
Australian Veterinary Journal, 1982, 58, 1, pp 24-26
Abstract

Percentages of feeding ticks in which Babesia bigemina could be detected (infection rates) were determined following treatment of bovine hosts with each of 4 babesicides. Infection rates were suppresseed by imidocarb dipropionate, quinuronium sulphate and amicarbalide, reaching minimum levels 3-4...

Author(s)
De Vos, A. J.; Stewart, N. P.; Dalgliesh, R. J.
Citation
International Journal for Parasitology, 1984, 14, 3, pp 249-252
Abstract

Observations were made on the morphology and infectivity of Babesia bigemina in the gut of Boophilus microplus (Can.). The babesia parasites were derived from stabilates of a laboratory strain, prepared at intervals during several years of blood-passaging in cattle. Increased numbers of a...

Author(s)
Dalgliesh, R. J.; Stewart, N. P.; Rodwell, B. J.
Citation
Research in Veterinary Science, 1981, 31, 3, pp 350-352
Abstract

Illustrated accounts are given of the life-cycle of Boophilus microplus and of the life-cycles and transmission of the parasites it transmits to cattle in Queensland, Australia -- Babesia bovis, B. bigemina and Anaplasma.ADDITIONAL ABSTRACT:In this article from Queensland, the life-cycles are...

Author(s)
Stewart, N. P.; Dalgliesh, R. J.; Tratt, T.
Citation
Queensland Agricultural Journal, 1981, 107, 6, pp 305-308
Abstract

In studies in Australia, 2 strains of Babesia bovis that had been serially blood passaged in splenectomised calves 27-33 times, a procedure known to have reduced their virulence for normal cattle, were shown to have low pathogenicity for replete females of Boophilus microplus (Can.). In comparison...

Author(s)
Dalgliesh, R. J.; Stewart, N. P.; Duncalfe, F.
Citation
Zeitschrift fur Parasitenkunde, 1981, 64, 3, pp 347-351
Abstract

In 2 of 3 experiments, Boophilus microplus larvae infected with Babesia bigemina were released in a 2 to 4 g batch onto an artificially confined area (A) of a donor calf. A 2 g batch of uninfected larvae was released onto a confined area (B) on the other side of the calf. In experiment 1, the calf...

Author(s)
Dalgliesh, R. J.; Stewart, N. P.; Callow, L. L.
Citation
Australian Veterinary Journal, 1978, 54, 4, pp 205-206
Abstract

Percentages of larval ticks in which Babesia bovis and B. bigemina could be detected (infection rates) were determined after the larvae had been exposed to temperatures between 9 deg C and 27 deg C for periods of one to 35 days and then either fed on calves or heated at 37 deg C to stimulate...

Author(s)
Dalgliesh, R. J.; Stewart, N. P.
Citation
International Journal for Parasitology, 1982, 12, 4, pp 323-326
Abstract

Greater numbers of ticks were recovered from cattle experiencing initial tick-transmitted Babesia bovis infections than from comparably tick-infested cattle not infected with B. bovis.

Author(s)
Callow, L. L.; Stewart, N. P.
Publisher
Australian Veterinary Association., Artarmon, NSW, Australia
Citation
Australian Advances in Veterinary Science, 1979., 1979, pp 75

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