dc.contributor.author |
Sungirai, Marvelous
|
|
dc.contributor.author |
Baron, Samantha
|
|
dc.contributor.author |
Van der Merwe, Nicolaas Albertus (Albie)
|
|
dc.contributor.author |
Moyo, Doreen Zandile
|
|
dc.contributor.author |
De Clercq, Patrick
|
|
dc.contributor.author |
Maritz-Olivier, Christine
|
|
dc.contributor.author |
Madder, Maxime
|
|
dc.date.accessioned |
2019-04-04T06:12:50Z |
|
dc.date.issued |
2018-04 |
|
dc.description.abstract |
Recently there was an expansion in the geographic range of Rhipicephalus microplus in Zimbabwe. In order to understand gene flow patterns and population structure in this highly invasive and adaptable cattle tick, a population genetics study was carried out. Eighty-seven R. microplus tick samples drawn from 5 distinct populations were genotyped using eight polymorphic microsatellite loci. Genetic diversity (He) was high (0.755–0.802) in all the populations, suggesting high levels of gene flow with 97% of genetic variation found within populations and 3% amongst populations. No isolation by distance was observed with low but significant genetic differentiation amongst the populations (0–0.076). Most of the sampled individuals had admixed genetic backgrounds, except for those from Matabeleland North whose genetic makeup appeared different from the rest. Rhipicephalus microplus was recently recorded in this area and the environmental conditions do not support survival of the tick there. These results confirm recent range expansion of the tick and the lowest genetic diversity recorded in the Matabeleland North population is suggestive of a founder effect, which may lead to genetic drift. Generally, the very low levels of genetic differentiation amongst the populations could be a result of the frequent movement of livestock from one area to another, which will have implications for disease control. This study offers further opportunities to study evolutionary adaptation of R. microplus in Zimbabwe and southern Africa. |
en_ZA |
dc.description.department |
Forestry and Agricultural Biotechnology Institute (FABI) |
en_ZA |
dc.description.department |
Genetics |
en_ZA |
dc.description.department |
Veterinary Tropical Diseases |
en_ZA |
dc.description.embargo |
2019-04-05 |
|
dc.description.librarian |
hj2019 |
en_ZA |
dc.description.sponsorship |
The Belgium Department of Development Co-operation (DGD) |
en_ZA |
dc.description.uri |
http://www.elsevier.com/locate/actatropica |
en_ZA |
dc.identifier.citation |
Sungirai, M., Baron, S., Van der Merwe, N.A. et al. 2018, 'Population structure and genetic diversity of Rhipicephalus microplus in Zimbabwe', Acta Tropica, vol. 180, pp. 42-46. |
en_ZA |
dc.identifier.issn |
0001-706X (print) |
|
dc.identifier.issn |
1873-6254 (online) |
|
dc.identifier.other |
10.1016/j.actatropica.2018.01.003 |
|
dc.identifier.uri |
http://hdl.handle.net/2263/68775 |
|
dc.language.iso |
en |
en_ZA |
dc.publisher |
Elsevier |
en_ZA |
dc.rights |
© 2018 Elsevier B.V. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in Acta Tropica. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. A definitive version was subsequently published in Acta Tropica, vol. 180, pp. 42-46, 2018. doi : 10.1016/j.actatropica.2018.01.003. |
en_ZA |
dc.subject |
Boophilus microplus |
en_ZA |
dc.subject |
Ixodida |
en_ZA |
dc.subject |
Rhipicephalus |
en_ZA |
dc.subject |
Population genetics |
en_ZA |
dc.subject |
Microsatellites |
en_ZA |
dc.subject.other |
Veterinary science articles SDG-01 |
en_ZA |
dc.subject.other |
SDG-01: No poverty |
|
dc.title |
Population structure and genetic diversity of Rhipicephalus microplus in Zimbabwe |
en_ZA |
dc.type |
Postprint Article |
en_ZA |