Non-specific ulceration of the small bowel

No Abstract

Handinfeksies - 'n statistiese ontleding

No Abstract

Owren se siekte (Kongenitale faktor V-tekort, parahemofilie) by twee kleurlingsusters

No Abstrac

Dried skimmed milks and kwashiorkor

No Abstract

Roan antelope Hippotragus equinus in Africa : a review of abundance, threats and ecology

1. The roan antelope Hippotragus equinus, Africa’s second largest antelope species, is widely distributed throughout Africa. Many populations are isolated, occur at low densities, and are declining. The species’ interactions with and adaptations to the diverse environmental conditions throughout its geographic range remain largely unknown. Most studies have taken place in southern Africa, near the range limit for the species; few studies have been conducted on the historically large Central and West African populations. 2. We reviewed available published and accessible unpublished data related to the ecology of roan antelope. We aim to: 1) review available taxonomic, abundance, distribution, and population trend data; 2) describe the threats faced by the roan antelope, and establish whether sufficient data exist to describe its ecological requirements; and 3) highlight the relevance of conserving this species throughout Africa and suggest where research on survival requirements should be focussed. 3. Roan antelope populations throughout Africa are declining due to natural and anthropogenic threats. Methodological irregularities result in uncertainty and non-comparable population data between studies. Large gaps exist in our knowledge of roan antelope diet and regional movements. Information on the population genetics of roan antelope is needed in order to assess the connectedness of different populations. 4. Data deficiency severely impedes our ability to employ powerful analytical methods aimed at understanding and predicting population persistence and viability, and to model envisaged threats from impending climate change. A unified approach to fundamental ecological research is required to inform the conservation and management of large rare mammalian ungulates such as the roan antelope in Africa.University of Pretoria and South African National Research Foundation.http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1365-29072017-04-30hb2016Mammal Research InstituteZoology and Entomolog

First record of roan antelope (Hippotragus equinus) feeding on the fruits of the sausage tree (Kigelia africana)

No abstract available.National Research Foundation (NRF), Paul G. Allen Family Foundation, Wilderness Safaris, Wilderness Wildlife Trust, Komanis Foundation and Elephants Without Borders.http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1365-20282015-12-30hb201

Home range and habitat use of roan antelope Hippotragus equinus in Northern Botswana

Studies investigating animal movement and habitat use are essential for wildlife management and conservation. Northern Botswana represents some of the least modified landscapes in Africa. Studying the seasonal habitat use of herbivores in these landscapes provides important baseline information with which to compare the behavioural responses of similar species occurring in anthropogenically modified landscapes. We report on the home range extent and habitat use of roan antelope (Hippotragus equinus) in a region of northern Botswana unaffected by artificial water and fences. We deployed Global Positioning System (GPS) collars on individuals in four roan antelope herds in northern Botswana, three herds in the drier northern section of Botswana and one herd in the wetter Okavango Delta. Herds in the drier northern section occupied larger home ranges (>50 km2) than did herds in the wetter Okavango Delta (<50 km2). All herds preferred specific core areas (all smaller than 20 km2) within their home ranges. All herds had similar location and size of home range between the wet and dry season (non-migratory). All herds occurred in back-country sandveld areas dominated by either Kalahari apple-leaf (Philenoptera nelsii) or silver cluster-leaf (Terminalia sericea) woodlands with low densities of competitors and predators. In Botswana, the long-term persistence of free-roaming roan antelope herds likely depends on the preservation of these unmodified back-country habitats away from permanent water.Wilderness Safaris, the Wilderness Wildlife Trust, the National Research Foundation (NRF) of South Africa, the Research Development Fund of the University of Pretoria, the Botswana Wildlife Management Association (BWMA), the Paul G. Allen Family Foundation, the Conservation Foundation, the Comanis Foundation and Jerome Cohen & Madeleine Delman Cohen.http://www.elsevier.com/locate/jaridenv2022-10-15hj2021Mammal Research InstituteZoology and Entomolog