Observation of a novel Babesia spp. in eastern grey kangaroos (Macropus giganteus) in Australia

Dawood, Kaiser E., Morgan, Jess A.T., Busfield, Frances, Srivastava, Mukesh, Fletcher, Taryn I., Sambono, Jacqueline, Jackson, Lousie A., Venus, Bronwyn, Philbey, Adrian W. and Lew-Tabor, Ala E. (2013) Observation of a novel Babesia spp. in eastern grey kangaroos (Macropus giganteus) in Australia. International Journal for Parasitology: Parasites and Wildlife, 2 1: 54-61. doi:10.1016/j.ijppaw.2012.12.001

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Author Dawood, Kaiser E.
Morgan, Jess A.T.
Busfield, Frances
Srivastava, Mukesh
Fletcher, Taryn I.
Sambono, Jacqueline
Jackson, Lousie A.
Venus, Bronwyn
Philbey, Adrian W.
Lew-Tabor, Ala E.
Title Observation of a novel Babesia spp. in eastern grey kangaroos (Macropus giganteus) in Australia
Journal name International Journal for Parasitology: Parasites and Wildlife   Check publisher's open access policy
ISSN 2213-2244
Publication date 2013
Year available 2013
Sub-type Article (original research)
DOI 10.1016/j.ijppaw.2012.12.001
Open Access Status DOI
Volume 2
Issue 1
Start page 54
End page 61
Total pages 8
Place of publication Oxford, United Kingdom
Publisher Elsevier
Collection year 2014
Language eng
Formatted abstract
The roles and epidemiological features of tick-borne protozoans are not well elicited in wildlife. Babesia spp. are documented in many domestic animals, including cattle, horses, pigs, dogs and cats. Three cases affecting eastern grey kangaroos are described. The kangaroos exhibited neurological signs, depression and marked anaemia, and microscopic examination of blood smears revealed intraerythrocytic piroplasms.  One to seven intraerythrocytic spherical, oval, pyriform and irregularly-shaped parasites consistent with Babesia spp. were seen in the blood smears and the percentage of infected erythrocytes was estimated to be approximately 7% in each case. Data suggest that the tick vector for this kangaroo Babesia sp. is a Haemaphysalis species. For Case 2, ultrastructural examination of the erythrocytes of the renal
capillaries showed parasites resembling Babesia spp. and 18 of 33 erythrocytes were infected. DNA sequencing of the amplified 18S rDNA confirmed that the observed intraerythrocytic piroplasms belong to the genus Babesia. The phylogenetic position of this new kangaroo Babesia sp. (de novo Babesia macropus), as a sister species to the new Australian woylie Babesia sp., suggests a close affinity to the described Afro–Eurasian species Babesia orientalis and Babesia occultans suggesting perhaps a common ancestor for the Babesia in kangaroos.
Keyword Babesia
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Queensland Alliance for Agriculture and Food Innovation
Official 2014 Collection
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Created: Tue, 09 Apr 2013, 15:08:04 EST by Dr Alicja Lew-tabor on behalf of Centre for Animal Science