| melanoma in golden and king wildebeests ( connochaetes taurinus). | pigmentation of the skin is a crucial component in the pathogenesis of melanocytic neoplasms and other skin-related tumors, as melanin is known to function in both the absorbance of ultraviolet radiation and as an antioxidant. very limited information exists regarding the incidence and metastatic potential of neoplastic conditions of the skin in game animals, especially wildebeests, relative to domestic animals. four cases of cutaneous melanoma in color-variant golden and king wildebeests ( conn ... | 2018 | 29517449 |
| genetic divergence in south african wildebeest: analysis of allozyme variability. | genetic variability within the blue (connochaetes taurinus) and black (c. gnou) wildebeests in south africa was estimated from allozyme frequencies at 31 protein-encoding loci. seven loci, ak-1, alb, est-d, icdh-1, mpi-1, pgm-1, and tf, were polymorphic in the blue wildebeest, but only two loci, est-d and tf, were variable in its congener. average gene diversity was h = 0.018 +/- 0.013 in the black wildebeest and was significantly smaller than that, h = 0.081 +/- 0.030, in the blue wildebeest. t ... | 1994 | 7995929 |
| immune effector mechanisms involved in the control of parasitaemia in trypanosoma brucei-infected wildebeest (connochaetes taurinus). | the course of trypanosoma brucei infection in the wildebeest (connochaetes taurinus) was studied. a low but persistent parasitaemia developed in all five wildebeest following intravenous inoculation with 1 x 10(8) organisms of clone iltat 2.1. unlike cattle controls, however, the wildebeest did not develop anaemia. in both cattle and wildebeest, radioimmunoassay studies revealed a classical sequence of production of igm, igg1 and igg2 antibodies which had the capacity to bind to the correspondin ... | 1986 | 3710523 |
| epizootology of wildebeest-derived malignant catarrhal fever in an outbreak in the north-western transvaal: indications of an intermediate host. | the investigation involved 37 herds of cattle numbering 6,280 animals and 5 groups of blue wildebeest (connochaetes taurinus), consisting of 30-330 wildebeest per group. all the cases of wildebeest-derived malignant catarrhal fever encountered were associated with wildebeest and not with other game animals. six per cent of the cases were encountered in late summer when the wildebeest calves were 3-4 months old, whereas 73% occurred in spring, when the wildebeest calves were 8-11 months old and d ... | 1989 | 2748134 |
| wet season range fidelity in a tropical migratory ungulate. | 1. in migratory populations, the degree of fidelity and dispersal among seasonal ranges is an important population process with consequences for demography, management, sensitivity to habitat change and adaptation to local environmental conditions. 2. characterizing patterns of range fidelity in ungulates, however, has remained challenging because of the difficulties of following large numbers of marked individuals across multiple migratory cycles and of identifying the appropriate scale of anal ... | 2012 | 22256947 |
| relationships between graminoid growth form and levels of grazing by caribou (rangifer tarandus) in alaska. | herbivores and their forage interact in many ways, in some instances to the benefit or detriment of herbivore and vegetation. studies of wildebeest (connochaetes taurinus) in africa and snow geese (chen caerulescens) in the arctic have suggested that these grazers enhance graminoid production in certain sites by repeatedly using them. other studies have concluded that herbivores are sensitive to local variation in forage quality and quantity, and preferentially use those sites that are intrinsic ... | 1996 | 28307265 |
| genetic variability in south african blue wildebeest (connochaetes oaurinus). | 1. we use protein gel-electrophoresis to investigate genetic heterogeneity at 33 protein coding loci in a total of 46 blue wildebeest (c. taurinus) kept under different management regimes. 2. average heterozygosity ranged from 2.14 to 4.3% and within-population differences accounted for 97.2% of total relative gene diversity. 3. comparatively little divergence was found between animals sampled from populations with very diverse population sizes and management histories, with the largest genetic ... | 1993 | 8281767 |
| does competition or facilitation regulate migrant ungulate populations in the serengeti? a test of hypotheses. | interspecific competition and facilitation have both been proposed as processes promoting species separation and co-existence in african ungulates. in one group of grazers on the serengeti plains, comprising wildebeest (connochaetes taurinus), zebra (equus burchelli), and thomson's gazelle (gazella thomsoni), these processes have also been suggested to regulate the populations. censuses of these populations over 20 years have shown changes that allow a test of which, if either, process regulates ... | 1982 | 28311742 |
| generation time and intrinsic rates of natural increase in wildebeeste (connochaetes taurinus albojubatus thomas). | | 1970 | 5465737 |
| an unusual site for a ciliate in the blue wildebeeste (connochaetes taurinus). | | 1970 | 5462488 |
| studies on the epizootiology of rinderpest in blue wildebeest and other game species of northern tanzania and southern kenya, 1965-7. | | 1967 | 5235256 |
| malignant catarrhal fever in east africa. i. behaviour of the virus in free-living populations of blue wildebeest (gorgon taurinus taurinus, burchell). | | 1965 | 14281668 |
| the influence of a semi-arid sub-catchment on suspended sediments in the mara river, kenya. | the mara river basin in east africa is a trans-boundary basin of international significance experiencing excessive levels of sediment loads. sediment levels in this river are extremely high (turbidities as high as 6,000 ntu) and appear to be increasing over time. large wildlife populations, unregulated livestock grazing, and agricultural land conversion are all potential factors increasing sediment loads in the semi-arid portion of the basin. the basin is well-known for its annual wildebeest (co ... | 2018 | 29420624 |
| annual mass drownings of the serengeti wildebeest migration influence nutrient cycling and storage in the mara river. | the annual migration of ∼1.2 million wildebeest (connochaetes taurinus) through the serengeti mara ecosystem is the largest remaining overland migration in the world. one of the most iconic portions of their migration is crossing of the mara river, during which thousands drown annually. these mass drownings have been noted, but their frequency, size, and impact on aquatic ecosystems have not been quantified. here, we estimate the frequency and size of mass drownings in the mara river and model t ... | 2017 | 28630330 |
| electroejaculation, semen characteristics and semen preservation of the brindled gnu. | | 1976 | 1271362 |
| war-induced collapse and asymmetric recovery of large-mammal populations in gorongosa national park, mozambique. | how do large-mammal communities reassemble after being pushed to the brink of extinction? few data are available to answer this question, as it is rarely possible to document both the decline and recovery of wildlife populations. here we present the first in-depth quantitative account of war-induced collapse and postwar recovery in a diverse assemblage of large herbivores. in mozambique's gorongosa national park, we assembled data from 15 aerial wildlife counts conducted before (1968-1972) and a ... | 2019 | 30865663 |
| the development of genome-wide single nucleotide polymorphisms in blue wildebeest using the dartseq platform. | blue wildebeest (connochaetes taurinus taurinus) are economically important antelope that are widely utilised in the south african wildlife industry. however, very few genomic resources are available for blue wildebeest that can assist in breeding management and facilitate research. this study aimed to develop a set of genome-wide single nucleotide polymorphism (snp) markers for blue wildebeest. the dartseq genotyping platform, commonly used in polyploid plant species, was selected for snp disco ... | 2020 | 32574831 |
| remarkable muscles, remarkable locomotion in desert-dwelling wildebeest. | large mammals that live in arid and/or desert environments can cope with seasonal and local variations in rainfall, food and climate1 by moving long distances, often without reliable water or food en route. the capacity of an animal for this long-distance travel is substantially dependent on the rate of energy utilization and thus heat production during locomotion-the cost of transport2-4. the terrestrial cost of transport is much higher than for flying (7.5 times) and swimming (20 times)4. terr ... | 2018 | 30356212 |
| xenotransfusion with packed bovine red blood cells to a wildebeest calf (connochaetes taurinus). | a 4-month-old female blue wildebeest (connochaetes taurinus) was presented for bilateral pelvic limb fracture repair. clinical examination under anaesthesia revealed a water-hammer pulse and a haematocrit of 0.13. a xenotransfusion was performed using bovine (bos taurus) erythrocytes because of inability to acquire a wildebeest donor. clinical parameters improved following transfusion and the post-operative haematocrit value was 0.31. the wildebeest remained physiologically stable with a gradual ... | 2018 | 30326712 |
| large herbivore conservation in a changing world: surface water provision and adaptability allow wildebeest to persist after collapse of long-range movements. | large herbivores, particularly wide-ranging species, are extensively impacted by land use transformation and other anthropogenic barriers to movement. the adaptability of a species is, therefore, crucial to determining whether populations can persist in ever smaller subsets of their historical home ranges. access to water, by drinking or from forage moisture, is an essential requirement, and surface water provision is thus a long-established, although controversial, conservation practice. in the ... | 2020 | 32069369 |
| subspecific identity and a comparison of genetic diversity between wild and ex situ wildebeest. | the original north american ex situ wildebeest population was believed to originate from the white-bearded wildebeest (connochaetes taurinus albojubatus), which is both morphologically distinct and geographically separated from the brindled wildebeest (c. t. taurinus). however, after an import of wildebeest into north america in 2001, managers have suspected that white-bearded and brindled wildebeest were mixed in herds at multiple institutions. we sequenced the mitochondrial control region (d-l ... | 2020 | 31904139 |
| how free-ranging ungulates with differing water dependencies cope with seasonal variation in temperature and aridity. | large mammals respond to seasonal changes in temperature and precipitation by behavioural and physiological flexibility. these responses are likely to differ between species with differing water dependencies. we used biologgers to contrast the seasonal differences in activity patterns, microclimate selection, distance to potential water source and body temperature of the water-independent gemsbok (oryx gazella gazella) and water-dependent blue wildebeest (connochaetes taurinus), free-living in t ... | 2019 | 31723430 |
| a preliminary description of the sleep-related neural systems in the brain of the blue wildebeest, connochaetes taurinus. | the current study provides a detailed qualitative description of the organization of the cholinergic, catecholaminergic, serotonergic, orexinergic, and gabaergic sleep-related systems in the brain of the blue wildebeest (connocheates taurinus), along with a quantitative analysis of the pontine cholinergic and noradrenergic neurons, and the hypothalamic orexinergic neurons. the aim of this study was to compare the nuclear organization of these systems to other mammalian species and specifically t ... | 2020 | 31513360 |
| placentation in the blue wildebeest (connochaetes taurinus). | the wildebeest is a populous african ungulate, but despite its wide distribution within that continent few reports exist on the structure and endocrine functions of its placenta. | 2019 | 31174626 |
| biologging subcutaneous temperatures to detect orientation to solar radiation remotely in savanna antelope. | observations of animal thermoregulatory behavior are labor-intensive, and human presence may disturb the normal behavior of the animal. therefore, we investigated whether a remote biologging technique could be used to detect orientation to solar radiation in savanna antelope. we predicted that when a mammal was orientated perpendicular to solar radiation, the subcutaneous temperature on the side of the body facing the sun would be greater than that on the opposite side, whereas when the mammal w ... | 2019 | 31033258 |
| a practical guideline to remote biopsy darting of wildebeests for genetic sampling. | the use of biopsy darts for remote collection of tissue samples from free-ranging terrestrial and aquatic animal species has gained popularity in the recent past. the success of darting is very important since scientists may not have many chances to re-dart the same animal, especially with the free-ranging elusive wildlife species. we used wildebeest (connochaetes taurinus) as a model to estimate the optimum shooting distance, pressure and the shot part of the body through which a researcher can ... | 2016 | 30255036 |