Browsing RESEARCH: Chimimba C by Title
Now showing items 7-26 of 46
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Broad niche overlap between invasive Nile tilapia Oreochromis niloticus and indigenous congenerics in Southern Africa: Should we be concerned?
(MPDI (Basel, Switzerland), 2015)This study developed niche models for the native ranges of Oreochromis andersonii, O. mortimeri, and O. mossambicus, and assessed how much of their range is climatically suitable for the establishment of O. niloticus, and ... -
Calibrating a camera trap-based biased mark-recapture sampling design to survey the leopard population in the N'wanetsi concession, Kruger National Park, South Africa
(John Wiley & Sons Ltd, 2013)Estimating large carnivore abundance can be challenging. A biased leopard (Panthera pardus) population survey was conducted in the N’wanetsi concession in the Kruger National Park (KNP), South Africa, using motion-sensitive ... -
Circadian rhythms of locomotor activity in the reddish-grey musk shrew (Eulipotyphla: Soricidae) from South Africa
(The Zoological Society of London, 2011)The circadian rhythm of locomotor activity in a southern African shrew, the reddish-grey musk shrew Crocidura cyanea was investigated. Thirteen individuals were subjected to three successive light cycles, each cycle lasting ... -
A comparative analysis of components incorporated in conservation priority assessments: a case study based on South African species of terrestrial mammals.
(2007-07-06)Assessing the risk of extinction to species forms an essential part of regional conservation initiatives that facilitate the allocation of limited resources for conservation. The present study conducted conservation priority ... -
Craniometric sexual dimorphism and age variation in the South African Cape dune mole-rat (Bathyergus Suillus)
(American Society of Mammalogists, 2007)Because absolute mammalian age is difficult to measure directly, various methods have been used for its estimation. Among these methods, the degree of molar eruption and wear are considered to be the most reliable indicators ... -
Dynamics of Rodent-Borne Zoonotic Diseases and Their Reservoir Hosts: Invasive Rattus in South Africa
(University of California, Davis., 2012)Lack of adequate sanitation and pest control, and poor housing conditions that prevail in much of both rural and urban South Africa, cause rodent populations to thrive, promoting contact with humans, which results in ... -
Ecological niche modeling of the invasive potential of Nile tilapia Oreochromis niloticus in African river systems: concerns and implications for the conservation of indigenous congenerics
(2013-06-30)This study applied ecological niche models to determine the potential invasive range of Nile tilapia, Oreochromis niloticus, with a particular focus on river systems in southern Africa where it is now established and ... -
Evidence of a contact zone between Rhabdomys dilectus(Rodentia: Muridae) mitotypes in Gauteng province, South Africa
(Zoological Society of Southern Africa, 2015)Recent studies have described the presence of several mitochondrial lineages within Rhabdomys, which was previously considered to be a monotypic genus. The exact distributional limits of the species and subspecies and their ... -
Faecal glucocorticoid metabolite concentrations and their alteration post-defaecation in African wild dogs, Lycaon pictus from South Africa
(BioOne, 2018)Non-invasive techniques for the monitoring of animal well-being, such as faecal hormone analysis, are increasingly becoming some of the most desirable methods for addressing practical conservation questions. Despite the ... -
Food web properties vary with climate and land use in South African streams
(2020)Land use intensification and climate change are two prominent drivers of variation in biological communities. However, we know very little about how these two potential environmental stressors interact. Here we use a stable ... -
Genetic identification of freely traded synanthropic invasive murid rodents in pet shops in Gauteng Province, South Africa
(2020)Although synanthropic invasive murid rodents are freely traded in pet shops in South Africa, their taxonomic identities, however, remain largely unknown. Twenty-four murid rodents were sampled from pet shops in four of the ... -
Genetic monitoring detects an overlooked cryptic species and reveals the diversity and distribution of three invasive Rattus congeners in South Africa
(BioMed Central, 2011)Background: South Africa’s long and extensive trade activity has ensured ample opportunities for exotic species introduction. Whereas the rich biodiversity of endemic southern African fauna has been the focus of many ... -
Geometric craniometric analysis of sexual dimorphism and ontogenetic variation: A case study based on two geographically disparate species, Aethomys ineptus from southern Africa and Arvicanthis niloticus from Sudan (Rodentia:Muridae)
(ElsevierGmbH., 2009)Non-geographic morphometric variation, particularly at the level of sexual dimorphism and ontogenetic (age-related) variation, has been documented in rodents, and useful for establishing whether to analyse sexes separately ... -
Habitat-specific shaping of proliferation and neuronal differentiation in adult hippocampal neurogenesis of wild rodents
(Open Access Publishing, 2013-04)Daily life of wild mammals is characterized by a multitude of attractive and aversive stimuli. The hippocampus processes complex polymodal information associated with such stimuli and mediates adequate behavioral responses. ... -
Helminth composition and prevalence of indigenous and invasive synanthropic murid rodents in urban areas of Gauteng Province, South Africa
(Cambridge University Press, 2018)Although synanthropic rodents such as the indigenous species, Mastomys coucha, and the invasive species, Rattus norvegicus, R. rattus and R. tanezumi, are well-known to be hosts to various micro- and macroparasites, their ... -
The hippocampus of the eastern rock sengi: cytoarchitecture, markers of neuronal function, principal cell numbers, and adult neurogenesis
(Open Access Publishing, 2013-10)The brains of sengis(elephant shrews, order Macroscelidae)have long been known to contain a hippocampus that in terms of allometric progression indices is larger than that of most primates and equal in size to that of ... -
The influence of distance to perennial surface water on ant communities in Mopane woodlands, northern Botswana
(John Wiley & Sons Ltd, 2019)Studies of biodiversity along environmental gradients provide information on how ecological communities change in response to biotic and abiotic factors. For instance, distance to water is associated with several factors ... -
Inter-island dispersal of flightless Bothrometopus huntleyi (Coleoptera: Curculionidae) from the sub-Antarctic Prince Edward Island archipelago
(Antarctic Science Ltd, 2011)Bothrometopus huntleyi is a flightless weevil endemic to the volcanically-formed sub-Antarctic Prince Edward Islands archipelago that arose approximately 0.5 million years ago (m.y.a.). Since emergence, a series of volcanic ... -
Is reproduction of male eastern rock sengis (Elelphantulus myurus) from southern Africa affected by photoperiod
(NRC Research Press, 2016)Many mammals use the change in day length to time physiological and behavioural activities on a seasonal basis. Particularly, mammals from temperate regions use photoperiod to regulate reproductive functions; however, ...