Intestinal ciliates (Ciliophora) from the wild plains zebra (Equus quagga) in South Africa, with notes on the microtubule cytoskeleton organisation

2021 ◽  
pp. 125842
Author(s):  
Olga A. Kornilova ◽  
Anton V. Radaev ◽  
Ludmila V. Chistyakova
Keyword(s):  
South Africa ◽  
Microtubule Cytoskeleton ◽  
Plains Zebra

scholarly journals Assessing the potential of plains zebra to maintain African horse sickness in the Western Cape Province, South Africa

2019 ◽  
Author(s):  
Thibaud Porphyre ◽  
John D. Grewar
Keyword(s):  
South Africa ◽  
Western Cape ◽  
African Horse Sickness ◽  
Western Cape Province ◽  
Tariff Barrier ◽  
Source Of Infection ◽  
Stochastic Vector ◽  
Reservoir Hosts ◽  
Plains Zebra

AbstractAfrican horse sickness (AHS) is a disease of equids that results in a non-tariff barrier to the trade of live equids from affected countries. AHS is endemic in South Africa except for a controlled area in the Western Cape Province (WCP) where sporadic outbreaks have occurred in the past 2 decades. There is potential that the presence of zebra populations, thought to be the natural reservoir hosts for AHS, in the WCP could maintain AHS virus circulation in the area and act as a year-round source of infection for horses. However, it remains unclear whether the epidemiology or the ecological conditions present in the WCP would enable persistent circulation of AHS in the local zebra populations.Here we developed a hybrid deterministic-stochastic vector-host compartmental model of AHS transmission in plains zebra (Equus quagga), where host populations are age- and sex-structured and for which population and AHS transmission dynamics are modulated by rainfall and temperature conditions. Using this model, we showed that populations of plains zebra present in the WCP are not sufficiently large for AHS introduction events to become endemic and that coastal populations of zebra need to be >2500 individuals for AHS to persist >2 years, even if zebras are infectious for more than 50 days. AHS cannot become endemic in the coastal population of the WCP unless the zebra population involves at least 50,000 individuals. Finally, inland populations of plains zebra in the WCP may represent a risk for AHS to persist but would require populations of at least 500 zebras or show unrealistic duration of infectiousness for AHS introduction events to become endemic.Our results provide evidence that the risk of AHS persistence from a single introduction event in a given plains zebra population in the WCP is extremely low and it is unlikely to represent a long-term source of infection for local horses.

Estimation and management of genetic diversity in small populations of plains zebra (Equus quagga) in KwaZulu-Natal, South Africa

2001 ◽  
Vol 29 (6) ◽  
pp. 563-583 ◽  
Author(s):  
Anthony E Bowland ◽  
Karen S Bishop ◽  
Peter J Taylor ◽  
Jenny Lamb ◽  
F.Herman van der Bank ◽  
...  
Keyword(s):  
South Africa ◽  
Genetic Diversity ◽  
Small Populations ◽  
Kwazulu Natal ◽  
Plains Zebra

scholarly journals The Equidae from Cooper’s D, an early Pleistocene fossil locality in Gauteng, South Africa

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e6909
Author(s):  
Shaw Badenhorst ◽  
Christine M. Steininger
Keyword(s):  
South Africa ◽  
The Other ◽  
Early Pleistocene ◽  
Fossil Assemblage ◽  
Plains Zebra

Cooper’s D is a fossil locality in the Bloubank Valley close to other important sites such as Sterkfontein and Kromdraai in Gauteng, South Africa. The fossil deposits of Cooper’s D date to 1.38 ± 0.11 Ma. Hominins like Paranthropus robustus and early Homo have been recovered from Cooper’s Cave. We report here on the Equidae remains. Our sample contains specimens from the extinct Equus capensis, and a specimen which represents an extinct hipparion Eurygnathohippus cf. cornelianus. This particular specimen was previously identified as plains zebra (Equus quagga). The contribution of Equidae to the total fossil assemblage of Cooper’s D is relatively low, and these remains were likely accumulated by various predators such as spotted and brown hyenas and leopards. The Equidae, as well as the other fauna from Cooper’s D supports the existence of grassland, wooded and water components in the vicinity of the site.

Ways of Seeing Nonhuman Animals: Some Likened Zebras to Horses, Others to Asses

2020 ◽  
pp. 1-17
Author(s):  
Peter Heywood
Keyword(s):  
South Africa ◽  
Nineteenth Century ◽  
Nonhuman Animals ◽  
Plains Zebra

Abstract When Europeans first encountered zebras in South Africa, they variously referred to them as horses, asses, or mules. This type of classification continued into the nineteenth century when mountain zebras were sometimes described as “asinine” and plains zebras as “equine.” Quaggas, a subspecies of the plains zebra with reduced striping and brown coloration that were occasionally used as draft animals, were considered by some observers to be the most equine zebras. This perception seems to have influenced the image of quaggas and led some artists to incorrectly portray them with horse-like tails that they did not possess. This article examines the designations “equine” and “asinine” as applied to plains zebras (including quaggas) and mountain zebras, and connects these terms to their representation by various artists.

Genetic diversity of piroplasms in plains zebra (Equus quagga burchellii) and Cape mountain zebra (Equus zebra zebra) in South Africa

2010 ◽  
Vol 174 (1-2) ◽  
pp. 145-149 ◽  
Author(s):  
Raksha Bhoora ◽  
Peter Buss ◽  
Alan J. Guthrie ◽  
Barend L. Penzhorn ◽  
Nicola E. Collins
Keyword(s):  
South Africa ◽  
Genetic Diversity ◽  
Plains Zebra

Time and Latitude in South Africa

1972 ◽  
Vol 1 ◽  
pp. 27-38
Author(s):  
J. Hers
Keyword(s):  
South Africa ◽  
Cape Town ◽  
Astronomical Observations ◽  
Royal Observatory ◽  
The Republic ◽  
Astronomical Determination ◽  
Limited Accuracy ◽  
Better Than

In South Africa the modern outlook towards time may be said to have started in 1948. Both the two major observatories, The Royal Observatory in Cape Town and the Union Observatory (now known as the Republic Observatory) in Johannesburg had, of course, been involved in the astronomical determination of time almost from their inception, and the Johannesburg Observatory has been responsible for the official time of South Africa since 1908. However the pendulum clocks then in use could not be relied on to provide an accuracy better than about 1/10 second, which was of the same order as that of the astronomical observations. It is doubtful if much use was made of even this limited accuracy outside the two observatories, and although there may – occasionally have been a demand for more accurate time, it was certainly not voiced.

Combining Professional Interests and Travel: People to People Citizen Ambassador Program

2011 ◽  
Vol 1 (2) ◽  
pp. 47-54
Author(s):  
Alex Johnson ◽  
Amanda Hitchins
Keyword(s):  
South Africa ◽  
Health Education ◽  
Communication Disorders ◽  
Social Conditions ◽  
Speech Language Pathologists ◽  
Exchange Program

Abstract This article summarizes a series of trips sponsored by People to People, a professional exchange program. The trips described in this report were led by the first author of this article and include trips to South Africa, Russia, Vietnam and Cambodia, and Israel. Each of these trips included delegations of 25 to 50 speech-language pathologists and audiologists who participated in professional visits to learn of the health, education, and social conditions in each country. Additionally, opportunities to meet with communication disorders professionals, students, and persons with speech, language, or hearing disabilities were included. People to People, partnered with the American Speech-Language-Hearing Association (ASHA), provides a meaningful and interesting way to learn and travel with colleagues.

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