Browsing RESEARCH: Chimimba C by Title
Now showing items 16-35 of 42
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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 ... -
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, ... -
A mathematical epidemiological model of gram-negative Bartonella bacteria: Does differential ectoparasite load fully explain the differences in infection prevalence of Rattus rattus and R. norvegicus?
(Taylor & Francis, 2012)We postulate that the large difference in infection prevalence, 24% versus 5%, in R. norvegicus and R. rattus, respectively, between these two co-occurring host species may be due to differences in ectoparasite and potential ... -
Molecular and morphometric assessment of the taxonomic status of Ectemnorhinus weevil species (Coleoptera : Curculionidae, Entiminae) from the sub-Antarctic Prince Edward Islands
(BLACKWELL PUBLISHING, 2006-08)There are long-standing controversies on the taxonomic status of Ectemnorhinus weevil species occurring on the sub-Antarctic Prince Edward Islands. Since the two islands that constitute the Prince Edward Islands archipelago ... -
Molecular characterization of cosmopolitan and potentially co-invasive helminths of commensal, murid rodents in Gauteng Province, South Africa
(Springer, 2018)Concurrent studies of helminth parasites of introduced and native rodent species are few and miss the opportunity to identify potential co-invasive parasite species. This study employed molecular tools to infer the phylogeny ... -
Net effects of multiple stressors in freshwater ecosystems: a meta-analysis
(John Wiley & Sons Ltd, 2016)The accelerating rate of global change has focused attention on the cumulative impacts of novel and extreme environmental changes (i.e. stressors), especially in marine ecosystems. As integrators of local catchment and ... -
Niche complementarity between an alien predator and native omnivorous fish in the Wilge River, South Africa
(Springer, 2018)A major challenge in biological invasions is to predict community susceptibility to invasion. This study investigated trophic interrelationships between an alien predator, largemouth bass (Micropterus salmoides), and native ... -
Non-invasive monitoring of adrenocortical activity in free-ranging Namaqua rock mice Micaelamys namaquensis from South Africa in response to anthropogenic land use and season
(2019)Stress in animals has been linked to behavioural and physiological changes in response to environmental, social and anthropogenic stimuli. Hence, stress-related responses in animals, especially in rodents, have been used ... -
Ontogenetic variation and craniometric sexual dimorphism in the social giant mole-rat, Fukomys mechowii (Rodentia: Bathyergidae), from Zambia
(2010-10)The degree of maxillary molar tooth-row eruption and wear were used to assign samples of the social giant mole-rat, Fukomys mechowii, from Zambia, into nine relative age classes in order to assess ontogenetic (age) variation ... -
Reproductive photoresponsiveness in male spiny mice from South Africa
(Zoological Society of London, 2012)Many seasonally breeding mammals use changes in photoperiod as a reliable cue to time reproduction. Photoperiodic timing assists an animal in predicting annual environmental changes in its habitat and therefore, enables ... -
Seasonal changes in reproductive development in male spiny mice (Acomys spinosissimus) from South Africa
(Elsevier, 2012)Seasonal reproduction is a common characteristic of many small mammals which inhabit seasonal environments in temperate regions, the sub-tropics as well as the tropics. It is important for an animal to reproduce during ...