R
R. J. van Aarde
Researcher at University of Pretoria
Publications - 100
Citations - 3434
R. J. van Aarde is an academic researcher from University of Pretoria. The author has contributed to research in topics: Population & Porcupine. The author has an hindex of 33, co-authored 100 publications receiving 3234 citations. Previous affiliations of R. J. van Aarde include Mammal Research Institute & University of California, Davis.
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Range utilization by the aardvark, Orycteropus afer (Pallas, 1766) in the Karoo, South Africa
TL;DR: In this article, radio tracking of five aardvark in the False Upper Karoo, South Africa was carried out using three methods to determine home range size, namely restricted polygon, minimum convex polygon excluding excursions and MCP including excursions.
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Ligand specificity of uterine oestrogen and progesterone receptors in the subadult African elephant, Loxodonta africana.
TL;DR: The ligand specificity of progesterone and oestrogen receptors in the uteri of four nonpregnant, nonlactating African elephants, killed during routine culling in the Kruger National Park, were determined and the use of the different radioligands did not significantly affect the quantitative values obtained for the progestersone receptor.
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Changes in elephant conservation management promote density-dependent habitat selection in the Kruger National Park
Ashley Robson,R. J. van Aarde +1 more
TL;DR: In this paper, the authors compared the yearly distribution of randomly chosen available gridcells and total availability of distance to rivers and woody cover for assessing temporal variation in habitat selection in Kruger National Park and its three districts.
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Demography of a Cape porcupine, Hystrix africaeaustralis , population
TL;DR: Examination of age-specific survival, mortality and fecundity rates in a population, evaluates the roles of possible density-dependent changes of population parameters in the regulation of porcupine numbers, and describes the life history strategy of the species.
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Circulating progesterone and oestradiol-17β concentrations in cyclic Cape porcupines, Hystrix africaeaustralis
TL;DR: The hormonal characteristics of the oestrous cycle of females Houses with vasectomized males were similar to those of females housed with intact males and some instances (19%) of vaginal opening were not followed by an increase in progesterone secretion.