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Die invloed van swartpunt by gars (Hordeum distichon) op ontkieming en α-amilase-aktiwiteit

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P. C.J. Maree --- Departement Akkerbou en Weiding, A. L.P. Caims --- Departement Akkerbou en Weiding,

Gesonde garssaad en swartpuntgarssaad vanaf verskillende lokaliteite is vergelyk. Die ontkiemingsenergie van gesonde saad was na een maand beduidend beter as die van swartpuntsaad. Na 'n opbergingperiode van twee tot drie maande het geen verskille in ontkiemingsenergie en -kapasiteit meer...

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Theaflavin values of various tea clones and selections grown in the northern Transvaal

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: L.J. van Lelyveld --- , Republic of South Africa K. de Rooster --- , Republic of South Africa B.L. Smith --- , Republic of South Africa

Different grades of black tea of several clones and selections from a tea estate in the northern Transvaal were tested for theaflavin (TF) content. In the pekoe dust (PD) grade there were no significant differences in TF values. In the...

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The association between residual chlorophyll and grassy taste in black tea

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: L.J. van Lelyveld --- , Republic of South Africa B.L. Smith --- , Republic of South Africa

The ‘grassy’ taste in some South African and Central African black teas is not up to tea tasters' and buyers' standards. It has been shown by a number of researchers that this taste is associated with volatiles in the tea...

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Pedogenic differences between two adjacent basalt-derived soil profiles 1. Textural and chemical characteristics

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C. Bühmann --- , Republic of South Africa W. F.A. Kirsten --- , Republic of South Africa D.G. Paterson --- , Republic of South Africa M.E. Sobczyk --- , Republic of South Africa

Eleven soil samples derived from a black vertisol (Arcadia form) and a red alfisol (Shortlands form) were investigated by means of X-ray fluorescence as well as standard soil chemical and physical analyses. The profiles developed from Jurassic basalt under identical...

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Resistance in new groundnut breeding lines to black pod rot caused by Chalara elegans

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.J. Cilliers --- , Republic of South Africa

Black pod rot or black hull of groundnut caused by the fungus Chalara elegans results in severe damage to groundnut pods and kernels in South Africa. The disease is managed most effectively by planting resistant varieties. The commercial varieties currently...

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Control of black wattle (Acacia mearnsii De Wild.) seedlings with Garlon herbicide applied by backpack mistblower

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: B.D. Viljoen --- , South Africa C.W. Stoltsz --- , South Africa

Black wattle (Acacia mearnsii De Wild) has great economic value for South Africa, but also poses a tremendous threat to our natural ecosystems once it “escapes” from plantations into the surrounding grassland and watercourses, often forming dense, impenetrable thickets that...

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SHORT-TERM IMPACTS OF FORMULATIONS OF BACILLUS THURINGIENSIS VAR. ISRAELENSIS DE BARJAC AND THE ORGANOPHOSPHATE TEMEPHOS, USED IN BLACKFLY (DIPTERA: SIMULIIDAE) CONTROL, ON RHEOPHILIC BENTHIC MACROINVERTEBRATES IN THE MIDDLE ORANGE RIVER, SOUTH AFRICA

Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: R.W. Palmer --- Department of Water Affairs and Forestry, South Africa

The impacts of larvicides used in the control of blackflies (Diptera: Simuliidae) on macroinvertebrates in the stones-in-current biotope were assessed during 8 field trials in the middle Orange River, South Africa. Two Bacillus thuringiensis var. israelensis (B.t.i.) products (VectobacR 12AS...

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IMPACTS OF REPEATED APPLICATIONS OF BACILLUS THURINGIENSIS VAR. ISRAELENSIS DE BARJAC AND TEMEPHOS, USED IN BLACKFLY (DIPTERA: SIMULIIDAE) CONTROL, ON MACROINVERTEBRATES IN THE MIDDLE ORANGE RIVER, SOUTH AFRICA

Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: R.W. Palmer --- Department of Water Affairs and Forestry, South Africa A.R. Palmer --- , South Africa

The impacts of five consecutive treatments of blackfly larvicides on macroinvertebrates in the middle Orange River were assessed. The abundance of the midge Xenochironomus sp. and the limpet Burnupia sp. was lower at sites treated with Bacillus thuringiensis var. israelensis...

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INVERTEBRATES IN THE ORANGE RIVER, WITH EMPHASIS ON CONSERVATION AND MANAGEMENT

Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: R.W. Palmer --- Department of Water Affairs and Forestry, South Africa

Distribution and abundance of aquatic invertebrates in the lower 1800 kilometres of the Orange River is examined in relation to the conservation and management of the Orange River. Data are based on published information and surveys conducted during research into...

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Effects of fire, bruchid beetles and soil type on germination and seedling establishment of Acacia drepanolobium

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: B.D. Okello T.P. Young

The effects of fire, bruchid seed beetles and soil type on the germination and seedling establishment of Acacia drepanolobium were experimentally investigated. Seeds subjected to three seed treatments (bruchid damaged, bruchid-free burnt, and bruchid-free unburned) were germinated in three different...

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Estimation of grazing by herbivores from analysis of dung

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: L V Mabinya J M Brand J G Raats W S W Trollope

Two phenolic acids, p-coumaric and ferulic acid, can be liberated from grass material by mild alkaline hydrolysis and resolved by thin layer chromatography (TLC). The two acids can also be recovered from the dung of various herbivores and their presence...

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Antioxidant activity of selected plants of the Great Fish River Reserve,Eastern Cape, South Africa

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: AH Kgopa --- Department of Biochemistry, Microbiology and Biotechnology, South Africa SI Bulani --- Department of Biochemistry, Microbiology and Biotechnology, South Africa BS Wilhelmi --- Department of Biochemistry, Microbiology and Biotechnology, South Africa JM Brand --- Department of Biochemistry, Microbiology and Biotechnology, South Africa

The Great Fish River Reserve (GFRR), in the Eastern Cape, has proved to be particularly suitable for the black rhinoceros that have been introduced over the past 20 years. In captivity, these animals often suffer from a number of disease...

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Experiences of Newly Married Black Women Staying with the Extended Family in a Township in South Africa

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: N.B. Mashele --- Psychiatric Nursing, University of Johannesburg, South Africa M. Poggenpoel --- Psychiatric Nursing, University of Johannesburg, South Africa C.P.H. Myburgh --- Educational Sciences, University of Johannesburg, South Africa

We report the results of a phenomenological study on the experiences of newly married black women staying with extended family in South African townships. Our goals for the study included in-depth interviews on experiences and guidelines to facilitate these women's...

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The Experience of Stress and Trauma: Black Lesbians in South Africa

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Marlene Arndt --- University of Johannesburg, Helena Hewat --- University of Johannesburg,

The qualitative study explored the socio-cultural experiences of Black lesbians in South Africa. Participants were ten Black lesbians living around Johannesburg, Gauteng Region. Their ages ranged between 20 and 37 years. We used a phenomenological approach. The interview technique adopted...

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Relational Psychoanalysis Potential Usefulness with Black South African Clients

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Zelda G. Knight --- University of Johannesburg,

The aim of this article is to suggest that relational psychoanalysis may be a useful approach for working with clients from indigenous African cultures. In particular, the article considers the utility of relational psychoanalysis to understanding and enacting the therapeutic...

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Exploring Young Black Persons' Narratives About the Apartheid Past

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Cheryl Petersen --- North-West University (Potchefstroom Campus), South Africa Chris Venter --- North-West University (Potchefstroom Campus), South Africa Karel Botha --- North-West University (Potchefstroom Campus), South Africa

This study examined intergeneration narratives about the apartheid past through the retelling of 14 young black South Africans aged 16 to 21 (males =6, females =8). A qualitative categorical-content data analysis underpinned by social constructionism, explored these secondary narrative segments...

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African Female Adolescents' Experience of Parenting and Their Sense of Well-Being

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Vicki Koen --- North-West University, South Africa Chrizanne van Eeden --- North-West University, South Africa Chris Venter --- North-West University, South Africa

The objective of this study was to explore and describe South African, African female adolescents' experience of parent-adolescent relationships and their perceptions of the influence of the parent-adolescent relationship on aspects of their sense of well-being. Sixty-two African female adolescents...

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Dimensions of Job Satisfaction Identified Among South African Black Middle-level Managers: A Qualitative Investigation

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Sonja C. Strydom --- Stellenbosch University, René van Eeden --- University of South Africa,

The aim of the present study was to identify the factors contributing to job satisfaction for black middle-level managers and to contextualise these factors in terms of Afrocentric values and South Africa's socio-political and historical background. The sample comprised eight...

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Estimation of preferred water flow parameters for four species of Simulium (Diptera: Simuliidae) in small clear streams in South Africa

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: NicholasA Rivers-Moore FerdinandC de Moor SharonA Birkholz RobertW Palmer

Blackfly larvae typically occur in fast-flowing riffle sections of rivers, with different blackfly species showing preferences for different hydraulic conditions. Very little quantitative data exist on hydraulic conditions linked to the blackfly species occurring in South African streams. Stones-in-current biotopes...

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Diet of Black-shouldered Kite Elanus caeruleus in a farmland area near Algiers, Algeria

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Abdessalam Manaa --- Laboratory of Ornithology, Department of Zoology, Algeria Karim Souttou --- Laboratory of Ornithology, Department of Zoology, Algeria Makhlouf Sekour --- Laboratory of Ornithology, Department of Zoology, Algeria Djamel Bendjoudi --- Department of Biology, Faculty of Agro-Veterinary and Biology, Algeria Omar Guezoul --- Laboratory of Ornithology, Department of Zoology, Algeria Fadila Baziz-Neffah --- Laboratory of Ornithology, Department of Zoology, Algeria Salaheddine Doumandji --- Laboratory of Ornithology, Department of Zoology, Algeria Emmanuelle Stoetzel --- UMR CNRS 7194 – Department of Prehistory, France Christiane Denys --- UMR CNR S5202 – USM601 – CP51 – Mammals and Birds, Department of Systematics and Evolution, France

The diet of the Black-shouldered Kite Elanus caeruleus was analysed in a recently colonised area in Meftah, south-eastern Algiers, Algeria. The diet was determined by analysing 144 pellets. Our data showed that the diet was dominated by rodents with Algerian...

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Alexandrium in the Black Sea — identity, ecology and PSP toxicity

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: A Vershinin S Morton T Leighfield S Pankov L Smith M Quilliam J Ramsdell

Alexandrium cf. tamarense was recorded for the first time along the north-eastern coast of the Black Sea in July 2001. Since then, it has been observed annually between May and October. A maximum density of Alexandrium spp. of 9 000...

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Liver lipids of Indian and Atlantic Ocean spinner Carcharhinus brevipinna and blacktip Carcharhinus limbatus sharks

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: B Davidson --- , Netherlands Antilles M Zayed --- , Netherlands Antilles S Zayed --- , Netherlands Antilles G Cliff --- , South Africa

Shark liver oils are rich in polyunsaturated fatty acids, especially the n3 moieties. Data on the liver fatty acids of sharks from African waters, however, are limited. Liver samples from sharks from the western Indian Ocean off the east coast...

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Comparison of the population structure and life-history parameters of Diplodus capensis (Sparidae) in exploited and unexploited areas of southern Angola

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: TJ Richardson --- Department of Ichthyology and Fisheries Science, PO Box 94, South Africa WM Potts --- Department of Ichthyology and Fisheries Science, PO Box 94, South Africa CV Santos --- , Angola WHH Sauer --- Department of Ichthyology and Fisheries Science, PO Box 94, South Africa

Blacktail seabream Diplodus capensis were sampled from proximate (10 km apart) exploited and unexploited areas in southern Angola to compare their population structures and life-history parameters. Females dominated the larger size and older age classes in the unexploited area. In...

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The reproductive style of Diplodus capensis (Sparidae) in southern Angola: rudimentary hermaphroditism or partial protandry?

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: TJ Richardson --- Department of Ichthyology and Fisheries Science, PO Box 94, South Africa WM Potts --- Department of Ichthyology and Fisheries Science, PO Box 94, South Africa WHH Sauer --- Department of Ichthyology and Fisheries Science, PO Box 94, South Africa

The reproductive style of Diplodus capensis was examined in an unexploited coastal area in southern Angola. The mean length of females was significantly greater than that of males and, although not significant, females dominated the older age classes. The overall...

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Ploidy determination of black wattle (Acacia mearnsii) using stomatal chloroplast counts

Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: SaschaL. Beck --- , South Africa Annabel Fossey --- School of Molecular and Cellular Biosciences, South Africa Sadhna Mathura --- School of Molecular and Cellular Biosciences, South Africa

The arrangements of chloroplasts and numbers within the stoma were examined as a rapid indirect technique for the identification ofploidy level in blackwattle (Acacia mearnsii de Wild). Chloroplast counts were made from stomatal guard cells from leaves of known diploid...

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A breeding strategy for Acacia mearnsii (black wattle) in South Africa

Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: R. W. Dunlop --- , R. D. Bairnes --- , UK K. M. Nixon --- , S. F. Hagedorn --- ,

The black wattle breeding programme that has served the wattle bark industry ofSouth Africa for the past five decades putlittleemphasis on improvingthe yield and quality ofthe timber, as timberwas not the product ofimportance. Today the timber is as important, ifnot...

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Effect of garlic, black seed and Biogen as immunostimulants on the growth and survival of Nile tilapia, Oreochromis niloticus (Teleostei: Cichlidae), and their response to artificial infection with Pseudomonas fluorescens

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: AhmedS Diab SalahM Aly George John Yasser Abde-Hadi MohamedF Mohammed

Three dosage levels of black seed, garlic and commercial Biogen were administered for three months in summer and six months in winter to test their stimulation effect on growth, survival and response to challenge infection in Oreochromis niloticus. At the...

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Impact of winter flow regulation on pest-level populations of blackfly (Diptera: Simuliidae) and non-target faunal communities in a South African river

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: NA Rivers-Moore FC de Moor

The mid-reaches of the Great Fish River in the Eastern Cape Province of South Africa experience regular outbreaks of the pest blackfly Simulium chutteri as a direct consequence of increased flows caused by an inter-basin transfer scheme. There are opportunities...

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Effects of leaf and tree age on chlorophyll absorbance in diploid black wattle (Acacia mearnsii)

Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: A Fossey S Mathura SL Beck-Pay

The invasiveness of black wattle (Acacia mearnsii) in South Africa has created a need to investigate ways to reduce seed production. The Institute for Commercial Forestry Research is investigating polyploidy production with the view to inducing reduced fertility. Accurate, reliable...

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Cut-off values of distal forearm bone density for the diagnosis of central osteoporosis in black postmenopausal South African women

Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: IM Kruger --- Africa Unit for Transdisciplinary Health Research (AUTHeR), MC Kruger --- Institute of Food, Nutrition and Human Health, Massey University, New Zealand CM Doak --- Department of Nutrition and Health, The Netherlands A Kruger --- Africa Unit for Transdisciplinary Health Research (AUTHeR),

Background: The objective of this study was to establish a triage cut-off point or threshold for peripheral bone mineral density (BMD), applicable to black postmenopausal women, and that could be used as a screening method to differentiate between women with...

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Carotid intima-media thickness and its associations with type 2 diabetes mellitus in South Africans

Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: P Rheeder --- Epidemiology and Biostatistics Track, School of Health Systems and Public Health, University of Pretoria, MC Duim-Beytell --- School of Medicine, University of Pretoria, R Meijer --- Julius Centre for Health Sciences and Primary Care, Netherlands T Gustavsson --- Image and Data Analysis, Sweden GKG Danler --- Department of Radiology, RA Ahmed --- Department of Radiology, DG Van Zyl --- Department of Internal Medicine,

Objectives: Carotid intima-media thickness (CIMT) is a surrogate marker of subclinical atherosclerosis and a predictor of cardiovascular events. Few studies in Africa have evaluated CIMT and its associations in people with type 2 diabetes mellitus. This study measured CIMT in...

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Predictors of topical steroid misuse among patrons of pharmacies in Pretoria

Item type: Journal Article • Journal: South African Family Practice • Authors: N Malangu --- National School of Public Health, University of Limpopo, GA Ogunbanjo --- Department of Family Medicine and Primary Health Care,

Background:

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Anthropometric profile of HIV-uninfected and HIV-infected women aged 25–44 years in Mangaung, Free State

Item type: Journal Article • Journal: South African Family Practice • Authors: Z Hattingh --- School of Tourism, Hospitality and Sport, South Africa C Walsh --- Department of Nutrition and Dietetics, South Africa CJ Bester --- Department of Biostatistics, South Africa

Background: Obesity and human immunodeficiency virus/acquired immunodeficiency syndrome (HIV/AIDS) affect significant numbers of black women in South Africa.

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Prevalence of raised body mass indices and the association with high blood pressure and hyperglycaemia in the rural black population of Ga-Mothapo village, Capricorn District of Limpopo province

Item type: Journal Article • Journal: South African Family Practice • Authors: DG Sengwayo --- Department of Biomedical Sciences, MM Moraba --- Department of Medical Science, SCKM Motaung --- Department of Biomedical Sciences,

Objective: To assess the prevalence of elevated body mass index and to establish whether there was an association between raised body mass index (BMI) and high blood pressure (BP) and hyperglycaemia in the rural population of Ga-Mothapo village, Limpopo province.

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Assessment of the physical activity, body mass index and energy intake of HIV-uninfected and HIV-infected women in Mangaung, Free State province

Item type: Journal Article • Journal: South African Family Practice • Authors: Z. Hattingh --- Hotel School, M. Le Roux --- School of Design Technology and Visual Art, M. Nel --- Department of Biostatistics, Faculty of Health Sciences, C. Walsh --- Department of Nutrition and Dietetics, Faculty of Health Sciences,

Background: Declining levels of physical activity at workplaces, during leisure time and when travelling, accompanied by increasing exposure to the mass media, are major determinants of the global obesity epidemic. This study aimed to assess physical activity, the body mass...

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Black Adults’ Perceptions of Healthy Family Functioning

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Cynthia Zwane --- North-West University (Potchefstroom Campus), South Africa Chris Venter --- North-West University (Potchefstroom Campus), South Africa Q. Michael Temane --- North-West University (Potchefstroom Campus), South Africa Shingairai Chigeza --- North-West University (Potchefstroom Campus), South Africa

This study explores Black adults’ perceptions of factors that contribute to healthy family functioning. Qualitative interviews were conducted with 18 Black participants between the ages of 26 and 54. They responded to a question on their perceptions of healthy family...

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Meaning-making and resilience: case studies of a multifaceted process

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Linda C. Theron --- Optentia Research Program, Faculty of Humanities, South Africa Adam M. C. Theron --- Optentia Research Program, Faculty of Humanities, South Africa

Explanations of meaning-making generally prioritise intrapersonal processes. Although making meaning is an intrapersonal process, it is also strongly influenced by person-context interactions and cultural positioning. Nevertheless, the meaning-making literature has paid scant attention to how such interactivity and positioning shape...

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Occupational stress and mental well-being in a cohort of Black South African teachers

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Nelmarie Boshoff --- Faculty of Health Sciences, School for Psychosocial Behavioural Sciences, South Africa Johan C. Potgieter --- Faculty of Health Sciences, School for Psychosocial Behavioural Sciences, South Africa Esme van Rensburg --- Faculty of Health Sciences, School for Psychosocial Behavioural Sciences, South Africa Suria Ellis --- Faculty of Health Sciences, School for Psychosocial Behavioural Sciences, South Africa

This study explored levels of occupational stress and mental well-being of a cohort of Black South African teachers. 200 secondary school teachers completed the Teacher Stress Inventory (TSI: Boyle, Borg, Falzon, & Baglion, 1995), General Health Questionnaire (GHQ-28: Goldberg &...

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Time perspective amongst a group of Black African first-year students: correlates with academic competence

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Rinet van Lill --- Department of Psychology, Luzelle Naude --- Department of Psychology,

This study explores the constructs of academic competence and time perspective amongst Black African first-year students (n = 178, females = 72.5%) from a large South African university. Self-report data were collected on the students' time perspective and academic competence. Participants' time perspective was...

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Insights into the feeding ecology of the Seychelles Black Parrot Coracopsis barklyi using two monitoring approaches

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Anna Reuleaux --- Seychelles Islands Foundation, Seychelles Heather Richards --- Seychelles Islands Foundation, Seychelles Terence Payet --- Seychelles Islands Foundation, Seychelles Pascal Villard --- Seychelles Islands Foundation, Seychelles Matthias Waltert --- Conservation Biology, Workgroup on Endangered Species, Germany Nancy Bunbury --- Seychelles Islands Foundation, Seychelles

Feeding ecology is an important factor for the survival of a species and knowledge of its parameters is a prerequisite for successful conservation work. In this study we describe the feeding ecology of the endemic Seychelles Black Parrot Coracopsis barklyi...

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Basking behaviour in the rock hyrax (Procavia capensis) during winter

Item type: Journal Article • Journal: African Zoology • Authors: Kelly J. Brown --- School of Biological and Conservation Sciences, University of KwaZulu-Natal, South Africa Colleen T. Downs --- School of Biological and Conservation Sciences, University of KwaZulu-Natal, South Africa

Basking is a behaviour frequently observed in the rock hyrax (Procavia capensis) during winter that supposedly plays a significant role in rewarming from nocturnal hypothermia. This behaviour, together with changes in body temperature and changes in black bulb temperatures (Tbb)...

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Ontogenetic dietary shift and morphological correlates for Diplodus capensis (Teleostei: Sparidae) in southern Angola

Item type: Journal Article • Journal: African Zoology • Authors: Timothy J. Richardson --- Department of Ichthyology and Fisheries Science, South Africa Warren M. Potts --- Department of Ichthyology and Fisheries Science, South Africa Carmen V. Santos --- Faculdade Ciências da Universidade Agostinho Neto (FCUAN), Angola Warwick H.H. Sauer --- Department of Ichthyology and Fisheries Science, South Africa

Allometric growth patterns of functional morphological variables that reflect resource use in fish were correlated with the diet of Diplodus capensis in southern Angola. A total of 114 individuals (76–336 mm FL) were collected for stomach content analysis and a...

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Trends in African Black Oystercatcher Haematopus moquini populations between the early 1980s and early 2000s, with consideration of the influence of protected habitats and food availability

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Douglas Loewenthal --- Percy FitzPatrick Institute of African Ornithology, DST–NRF Centre of Excellence, South Africa Dane M Paijmans --- Percy FitzPatrick Institute of African Ornithology, DST–NRF Centre of Excellence, South Africa Philip W Haupt --- Seychelles Islands Foundation, Republic of Seychelles Philip AR Hockey --- Percy FitzPatrick Institute of African Ornithology, DST–NRF Centre of Excellence, South Africa

The African Black Oystercatcher Haematopus moquini is classified as Near Threatened because the population size is small (<10 000) and numbers have decreased or were previously recorded as decreasing. Although human activity has increased in many parts of the species’...

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Elevated temperatures drive fine-scale patterns of habitat use in a savanna bird community

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Rowan O Martin --- Percy FitzPatrick Institute of African Ornithology, DST–NRF Centre of Excellence, South Africa Susan J Cunningham --- Percy FitzPatrick Institute of African Ornithology, DST–NRF Centre of Excellence, South Africa Philip AR Hockey --- ,

Many animals use thermally buffered microhabitats, e.g. patches of shade within trees, to avoid temperature extremes. These ‘thermal refugia’ may mediate the impact of climate change on animals. Predicting how species and communities will respond to rising temperatures therefore requires...

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Differential reactions to anthropogenic disturbance by two ground-nesting shorebirds

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Shirley Van de Voorde --- Van Hall Larenstein, The Netherlands Minke Witteveen --- Percy FitzPatrick Institute of African Ornithology, DST–NRF Centre of Excellence, South Africa Mark Brown --- School of Life Sciences, South Africa

Many ground-nesting shorebirds experience a high level of anthropogenic disturbance, often to the detriment of their breeding success. This study investigated the responses of the Near-Threatened African Black Oystercatcher Haematopus moquini (ABO) and the Least Concern Kelp Gull Larus dominicanus...

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Temporal and spatial differences in three-egg clutch frequency of the African Black Oystercatcher

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Dane M Paijmans --- Percy FitzPatrick Institute of African Ornithology, DST–NRF Centre of Excellence, South Africa Douglas Loewenthal --- , Peter G Ryan --- Percy FitzPatrick Institute of African Ornithology, DST–NRF Centre of Excellence, South Africa Philip AR Hockey --- ,

African Black Oystercatchers Haematopus moquini produce a modal clutch size of two eggs and only rarely lay three eggs. A review of over 4 000 nest records from across their breeding range (dating back to the early 1960s) revealed that...

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Update on hyperuricaemia and gout with evidence based management guidelines

Item type: Journal Article • Journal: South African Family Practice • Authors: GM Mody --- Department of Rheumatology, South Africa

Gout is now the leading cause of inflammatory arthritis, affecting 1–2% of the population. The metabolic syndrome, cardiovascular risk factors, cardiovascular events and mortality are more common with gout. However, the role of uric acid as an independent risk factor...

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The roots and complexity of the land issue and of land claims in South Africa

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: FC de Beer --- Department of Anthropology and Archaeology,

Land reform and land restitution are current and emotional issues in South Africa and a scrutiny of the antecedent events and processes is crucial for an understanding of the complexities involved. Comprehending the land issue requires a reflection on the...

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Patriarchal influences on the lives of African adolescent girls from child-headed households

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Charmaine Leatham --- Department of Educational Psychology and South African Research Chair in Education and Care in Childhood, Faculty of Education, South Africa Jace Pillay --- Department of Educational Psychology and South African Research Chair in Education and Care in Childhood, Faculty of Education, South Africa Helen Dunbar-Krige --- Department of Educational Psychology and South African Research Chair in Education and Care in Childhood, Faculty of Education, South Africa

This study examined the gendered experiences of patriarchal family life by adolescent girls from a low socio-economic status (SES) neighbourhood in South Africa. The informants were nine girls from an urban setting, three of whom were from child-headed homes. The...

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A Study of lung cancer in Johannesburg, South Africa

Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: M Mukansi --- Head of Subdivision, Division of Pulmonology, Department of Internal Medicine, C Smith --- Pulmonologist in Private Practice Morningside Mediclinic, C Feldman --- Head, Division of Pulmonology, Department of Internal Medicine, Charlotte Maxeke Johannesburg Academic Hospital Professor, Faculty of Health Sciences,

We investigated whether or not differences existed between black and white patients in Johannesburg with regard to the demographic and histological features of lung cancer. This was a retrospective case record review of patients with lung cancer, seen over seven...

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Reproduction in the jackals Canis adustus Sundevall, 1846, and Canis mesomelas Schreber, 1778 (Carnivora: Canidae), in Zimbabwe

Item type: Journal Article • Journal: African Zoology • Authors: J. Bingham --- Central Veterinary Laboratory, Zimbabwe G.K. Purchase --- , Zimbabwe

Aspects of reproduction in two species of jackals (Canis adustus and Canis mesomelas)from Zimbabwe were studied using reproductive organs of jackal carcasses submitted for rabies testing or collected during culls. In C. adustus, parturition took place from early September to...

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‘Shh … quiet! Here they come.’ Black employees as targets of office gossip

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Nasima M. H. Carrim --- Human Resource Management Department, Faculty of Economic and Management Sciences,

This study explored black employees’ experiences of racial profiling by their white peers through the medium of gossip at a historically white, South African university. Participants consisted of 24 black employees (males = 50%, females = 50%; support staff =...

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Screening of fungicides for the management of wattle rust (Uromycladium acaciae) in Acacia mearnsii plantations, South Africa

Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Keith M Little --- School of Natural Resource Management, South Africa Richard G Payn --- School of Natural Resource Management, South Africa

South Africa has c. 110 000 ha planted to Acacia mearnsii (black wattle) with 85% of the revenue from the species obtained from the timber and 15% from the bark. From 2012/13 a wattle rust disease has spread throughout the...

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The metabolic profiles of HIV-infected and non-infected women in Mangaung, South Africa

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Z. Hattingh --- Department of Nutrition and Dietetics, C. Walsh --- Department of Nutrition and Dietetics, Fj Veldman --- Fibrinogen Unit, Cj Bester --- Department of Biostatistics,

Objective: To determine the biochemical nutritional status of HIV-infected women in Mangaung.

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Socio-demographic risk factors for HIV infection in women living in Mangaung, Free State

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Z Hattingh [AN0001] C Walsh --- Department of Nutrition and Dietetics, South Africa G Joubert --- Department of Biostatistics, South Africa

Objective: To determine socio-demographic risk factors associated with HIV infection in women in Mangaung.

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Contrast and contradiction: Being a black adolescent in contemporary South Africa

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Natasha Arndt --- Department of Psychology, South Africa Luzelle Naudé --- Department of Psychology, South Africa

This study aimed to gain in-depth understanding of the lived identity of black African adolescents in a contemporary South African setting. A purposive sample of 59 adolescents (females = 47%; Sesotho = 46%, Setswana = 36%, Other = 18%) from...

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Habitat selection of the Black-shouldered Kite Elanus caeruleus in agroecosystems of Swaziland

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Katharine A Howard --- Department of Wildlife, Sustainability, and Ecosystem Sciences, USA Thomas W Schwertner --- Department of Wildlife, Sustainability, and Ecosystem Sciences, USA James P Muir --- Department of Wildlife, Sustainability, and Ecosystem Sciences, USA Ara Monadjem --- All Out Africa Research Unit, Department of Biological Sciences, Swaziland

A decline in many African raptor populations may contribute to loss of ecosystem services such as pest control. The Black-shouldered Kite Elanus caeruleus stands out as an exception, experiencing range expansions due to its proclivity for agricultural landscapes. We surveyed...

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Population dynamics of Xylosandrus compactus (Coleoptera: Curculionidae: Scolytinae) on Coffea canephora in the Lake Victoria Crescent agroecological zone of Uganda

Item type: Journal Article • Journal: African Zoology • Authors: James P Egonyu --- Department of Zoology, Entomology and Fisheries Sciences, Uganda Gladys Ahumuza --- National Coffee Research Institute, Uganda Isaac Ogari --- National Coffee Research Institute, Uganda

We studied the seasonal population dynamics of Xylosandrus compactus on Coffea canephora for 24 months from June 2013 to May 2015 at the National Coffee Research Institute, Mukono, Uganda. Every month, we randomly sampled 20 infested twigs from different coffee...

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Serum AGEs in black South African patients with type 2 diabetes

Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Catherine Martha Mhlanga --- Department of Biochemistry, School of Pathology & Pre-Clinical Sciences, South Africa Motetelo Alfred Mogale --- Department of Biochemistry, School of Pathology & Pre-Clinical Sciences, South Africa Agustine Adu --- Department of Internal Medicine, School of Medicine, South Africa Leshweni Jeremiah Shai --- Faculty of Science, Department of Biomedical Sciences, South Africa

Objective: The objective of this study was to determine serum advanced glycation end products (AGEs) levels in black South African patients with and without type 2 diabetes (T2D) and to compare the results with those reported for other ethnic/race groups.

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Love grows with sex: teenagers negotiating sex and gender in the context of HIV and the implications for sex education

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Deevia Bhana --- School of Education, South Africa

How do teenagers located in the KwaZulu-Natal province of South Africa, the epicentre of the HIV pandemic, give meaning to sexuality? This paper examines teenage black Africans investments in sex and sexuality and the gendered dynamics through which sexuality is...

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Identity experiences of black people in the Netherlands

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Renée Zonneveld --- Tilburg University, The Netherlands Susanne B. E. Brand --- Tilburg University and University of Groningen, The Netherlands Byron G. Adams --- Tilburg University, The Netherlands, and University of Johannesburg, South Africa

In this study, we used the tri-dimensional model of identity and acculturation strategies to explore how black people living in the Netherlands define themselves. We used a qualitative survey design in which 14 participants (females = 8; age range 21...

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“Carrying the culture … ”: Ethnic identity development in black African adolescents

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Jolandie du Plessis --- Department of Psychology, South Africa Luzelle Naudé --- Department of Psychology, South Africa

This study explored the ethnic identity exploration, commitment, and strength statuses in black African adolescents from the central region of South Africa. A total of 388 adolescents were recruited for this study (females = 66.24%; age range 13 to 21;...

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“I am making it without you, dad”: Resilient academic identities of black female university students with absent fathers: An exploratory multiple case study

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Ncamisile Thumile Zulu --- Human Sciences Research Council, South Africa Nicholas Munro --- Discipline of Psychology, School of Applied Human Sciences, South Africa

This study explored the resilient academic identity constructions of two black father-absent females who were academically successful postgraduate students at a South African University. Using resilience theory and an African metaphysical framework, the study highlights the conversational devices that these...

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“Breaking the cycle”: Black adolescents’ experiences of being stereotyped during identity development

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Nelani Lombaard --- Department of Psychology, South Africa Luzelle Naudé --- Department of Psychology, South Africa

This study explored the experience of being stereotyped in a group of black South African adolescents. Participants were 73 black adolescents between the ages of 13 and 17 (females = 43.8%, majority ethnicity Setswana = 43,8%). The adolescents participated in...

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The fathers of Destiny: Representations of fatherhood in a popular South African magazine

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Bertrand Leopeng --- Department of Psychology, South Africa Malose Langa --- Department of Psychology, South Africa

This study utilised textual analysis to characterise the representation of fatherhood in the eight issues of Destiny Man magazine published in 2014. Stories that pertained to fatherhood and that were related to aspects of contemporary family construction, work, and identity...

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Invasion status of Florida bass Micropterus floridanus (Lesueur, 1822) in South Africa

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: OLF Weyl --- DST/NRF Research Chair in Inland Fisheries and Freshwater Ecology, South Africa MK Schirrmann --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa JS Hargrove --- Wildlife Ecology and Conservation Department, USA T Bodill --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa ER Swartz --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa

Largemouth bass Micropterus salmoides are a popular North American angling species that was introduced into South Africa in 1928. To enhance the largemouth bass fisheries, Florida bass Micropterus floridanus were introduced into KwaZulu Natal, South Africa, in 1980. Knowledge on...

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Weed density and biomass are reduced and plant growth and seed yield increased in common bean after solarisation with clear and black plastic

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Elizabeth Ngadze --- Department of Crop Science, Zimbabwe Arnold B Mashingaidze --- Department of Crop Science, Zimbabwe Julia Sibiya --- Department of Crop Science, Zimbabwe

Common bean is highly sensitive to early weed competition, which severely reduces growth and yield. An experiment was carried out in Zimbabwe in the 2002/03 and 2003/04 seasons to assess the effectiveness of solarisation in controlling weeds in beans. Four...

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Black widow spider bite in Johannesburg

Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: Teressa Sumy Thomas --- Faculty of Health Sciences, South Africa Alan Kemp --- Centre for Emerging, Zoonotic and Parasitic Diseases, South Africa Kim Pieton Roberg --- Faculty of Health Sciences, South Africa

Black widow spider bites are uncommon in South Africa, but it is important for clinicians to be aware of the clinical presentation in order to initiate appropriate treatment. This case highlights the presentation and management of a middle-aged gentleman who...

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Exploring the links between gender, dwelling, and career orientations of African emerging adults

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Tshepo Matjie --- Department of Industrial and Organisational Psychology, South Africa Melinde Coetzee --- Department of Industrial and Organisational Psychology, South Africa

The study explored the socio-ecological (i.e. gender and geographical location) influences on the career orientations of emerging adults. The participants comprised a convenience sample of 159 black African South African university students (57% rural, 43% urban; 63% females, 37% males;...

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Optimum INR intensity and therapeutic INR control in patients with mechanical heart valve prosthesis on warfarin oral anticoagulation at Dr George Mukhari academic hospital: a three-year retrospective study

Item type: Journal Article • Journal: South African Family Practice • Authors: S Ntlokotsi --- Department of Internal Medicine, School of Medicine, South Africa MF Moshesh --- Department of Internal Medicine, School of Medicine, South Africa P Mntla --- Department of Internal Medicine, School of Medicine, South Africa OA Towobola --- Department of Internal Medicine, School of Medicine, South Africa MA Mogale --- Department of Biochemistry, School of Science & Technology, South Africa

Background: Available evidence suggest that the optimum prothrombin time-international normalised ratio (PT-INR) intensities recommended for anticoagulation of patients with mechanical heart valve prosthesis may not apply to all race groups. Optimal PT-INR target ranges and effectiveness of warfarin oral anticoagulation...

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Spatial, temporal and attitudinal dimensions of conflict between predators and small-livestock farmers in the Central Karoo

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Marine Drouilly --- Institute for Communities and Wildlife in Africa, Department of Biological Sciences, South Africa Marion Tafani --- Institute for Communities and Wildlife in Africa, Department of Biological Sciences, South Africa Nicoli Nattrass --- Institute for Communities and Wildlife in Africa, Department of Biological Sciences, South Africa Justin O’Riain --- Institute for Communities and Wildlife in Africa, Department of Biological Sciences, South Africa

Conflict between predators and small-livestock farmers is a global phenomenon adversely impacting the preservation of wildlife, the well-being of livestock and human livelihoods. Such conflict is pervasive in the Karoo region of South Africa but its contemporary history and various...

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Time-dependent volatility in futures contract options

Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Jilong Chen --- International Business School, School of Finance, China Christian Ewald --- University of Glasgow, UK Ali M. Kutan --- Business School, Department of Economics and Finance, USA

The Schwartz (1997) two-factor model is the benchmark model for pricing futures options, and the volatility is constant, which is similar to the Black-Scholes model. In this paper, we use a similar method which can make the Black-Scholes model be...

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Morphological differentiation among populations of Sarotherodon melanotheron melanotheron Rüppell 1852 across the West African Lagoon systems (Benin, Cameroon, Nigeria, Togo)

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MO Popoola --- Department of Zoology, Nigeria FDB Schedel --- SNSB-Bavarian State Collection Zoology, Germany MA Akintoye --- Department of Zoology, Nigeria

Morphometric variation among populations of Sarotherodon melanotheron melanotheron across its natural range (Mahin, epe, Lekki, Apese, Kuramo, Lagos, Iyagbe, Ologe, Badagry, Yewa – Nigeria; Be Lagoon – Togo; Idenau – Cameroon, Aheme – Benin; Portonovo – Benin) were studied to...

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Differences between bone mineral density, lean and fat mass of HIV-positive and HIV-negative black women

Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: C Ellis --- Centre of Excellence for Nutrition, North-West University, South Africa HS Kruger --- Centre of Excellence for Nutrition, North-West University, South Africa P Ukegbu --- Centre of Excellence for Nutrition, North-West University, South Africa IM Kruger --- Africa Unit for Transdisciplinary Health Research, North-West University, South Africa M Viljoen --- Department of Pharmacology and Clinical Pharmacy, South Africa MC Kruger --- School of Health Sciences, Massey University, New Zealand

Objectives: To investigate the differences between bone mineral density (BMD), lean and fat mass of human immunodeficiency virus (HIV-) positive and HIV-negative black women and to investigate factors associated with low BMD.

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The effect of conditioning Acacia mearnsii De Wild. hedge-plants under shadenetting on rooting, elemental uptake and productivity of cuttings

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Sascha L Beck-Pay --- Institute for Commercial Forestry Research, University of KwaZulu-Natal, South Africa Mark D Laing --- Discipline of Plant Pathology, School of Agricultural Earth and Environmental Sciences, South Africa

Acacia mearnsii is a commercial forestry tree in South Africa, largely grown from open-pollinated seeds. Clonal deployment of superior selections of the species is restricted due to its poor rooting ability. The effects of conditioning parent hedge-plants under three levels...

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Effect of treated greywater by black shale and laterite on Lactuca sativa L. germination rate

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Drissa Sangare --- Department of Agronomic, Forestry and Environmental Engineering, Côte d’Ivoire Lassina Sandotin Coulibaly --- Department of Agronomic, Forestry and Environmental Engineering, Côte d’Ivoire Siaka Sylla --- Department of Science and Environmental Management, Côte d’Ivoire Lacina Coulibaly --- Department of Agronomic, Forestry and Environmental Engineering, Côte d’Ivoire

Greywater reuse for agricultural irrigation may contribute to reduced use of chemical fertilizers, and is helping to conserve scarce freshwater source. However, treatment methods that reduce the harmful effects of untreated greywater are essential for sustainable agriculture. This study aims...

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Blackwater processing via vermifiltration: Worm-based toilet (wormlet) in the arid context of Burkina Faso

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Mougabe Koslengar --- Laboratoire Eaux Hydro-systèmes et Agriculture (LEHSA), Burkina Faso Yacouba Konate --- Laboratoire Eaux Hydro-systèmes et Agriculture (LEHSA), Burkina Faso Harouna Karambiri --- Laboratoire Eaux Hydro-systèmes et Agriculture (LEHSA), Burkina Faso

In Burkina Faso, faecal sludge is mostly discharged into the environment untreated, with associated public health risks. Thus, sanitation technology that efficiently treats Blackwater (BW) in-situ is urgently required. This paper reports the design and testing of a proposed worm-based...

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Natural hair chronicles of black female vloggers: Influences on their psychological well-being

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Liezille Jacobs --- , South Africa Anelisa Kelemi --- , South Africa

This study explored how hair texture chronicles in a post-colonial country is influenced by psychological well-being and a sense of self in women. Our informants were 10 female, black, South African YouTube vloggers, with Afro-textured, frizzy, natural hair. The participants...

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What grass characteristics drive large herbivore feeding patch selection? A case study from a South African grassland protected area

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Elena Mariotti --- , South Africa Francesca Parrini --- , South Africa Cornelius J Louw --- , South Africa Jason P Marshal --- , South Africa

The coexistence of a large herbivore community depends on the degree of overlap in the resource used by the different species composing it. We investigated the role of grass greenness, height, biomass and feeding patch status on feeding patch selection...

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Residual fertiliser and liming impacts in a long-term Acacia mearnsii trial

Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Louis Titshall --- , South Africa

Sixth rotation growth measurements of an Acacia mearnsii fertiliser trial established to test the effect of nitrogen (N), phosphorus (P), potassium (K) and lime application on growth and bark production, showed that residual P and lime effects are present. First...

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Vitamin D [25(OH)D] and 1,25(OH)₂D serum concentrations in patients tested at the Charlotte Maxeke Johannesburg Academic Hospital

Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: S Botha --- , South Africa MR Maphayi --- , South Africa N Cassim --- , South Africa JA George --- , South Africa

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Fungicides and an insecticide tested for the control of wattle rust and brown wattle mirid in Acacia mearnsii plantations

Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Keith Little --- , South Africa

Black wattle is planted on 110 000 ha in South Africa, and considered economically important for both private and commercial growers. Black wattle is intensively managed, with protection from abiotic and biotic risk factors forming an important component of any...

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Racial relations and life satisfaction among South Africans: Results from the 2017 South African Social Attitudes Survey (SASAS)

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Adekunle Adedeji --- , South Africa Erhabor S. Idemudia --- , South Africa Obasanjo Afolabi Bolarinwa --- , South Africa Franka Metzner --- , Germany

The current study examined differences in race relations as a predictor of life satisfaction among South African adults. We analysed data from the South African Social Attitudes Survey 2017 (n = 3 135; female = 61%; black = 61% ,...

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Multi-asset allocation of exchange traded funds: Application of Black–Litterman model

Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Mei-Ling Tang --- , Taiwan Feng-Yu Wu --- , Taiwan Ming-Chin Hung --- , Taiwan

The Black–Litterman (BL) model allows investors to apply their subjective views to asset allocation optimisation. In this study, we construct a multi-asset allocation portfolio of iShares exchange traded funds (ETFs) using mean–variance (MV) and BL models. Two investment strategies, namely...

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Experiences of black African women entrepreneurs in the South African male-dominated entrepreneurial environments

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Dineo Diale --- , South Africa Nasima M. Carrim --- , South Africa

In the current study, we examined how culture, gendered roles, and societal expectations shape South African black African women’s entrepreneurial experiences in male dominated entrepreneurial environments. Utilising a life story technique approach, we interviewed 12 Black African women entrepreneurs regarding...

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Seed powder extract of physic nut (Jatropha curcas) as a biopesticide for weevils (Callosobruchus maculatus) in stored cowpea (Vigna unguiculata)

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: F. O. Ifeanyieze --- University of Nigeria, Nigeria H. I. Ameh --- University of Nigeria, Nigeria T. E. Ejiofor --- University of Nigeria, Nigeria M. E. Ikehi --- University of Nigeria, Nigeria F. M. Onu --- University of Nigeria, Nigeria

The study explored the effectiveness of physic nut (Jatropha curcas) in the control of cowpea weevils (Callosobruchus maculatus). The repellence, mortality rates and progeny emergence of weevils were observed, as well as germination viability of the treated cowpea seeds. The...

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Translocation of black‐headed dwarf chameleons Bradypodion melanocephalum in Durban, KwaZulu‐Natal, South Africa

Item type: Journal Article • Journal: The Journal of the Herpetological Association of Africa • Authors: AdrianJ. Armstrong --- Ezemvelo KZN Wildlife, South Africa

The coastal population of the black‐headed dwarf chameleon Bradypodion melanocephalum is threatened by rapid urban expansion in and around Durban which lies in the centre of the chameleon population's distribution. Translocations of threatened species from urban development sites is a...

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An allele-specific PCR assay for detection of mutations that confer benzimidazole resistance and zoxamide sensitivity in Phyllosticta citricarpa

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Beatrix Coetzee --- Stellenbosch University, South Africa Elma Carstens --- Citrus Research International (Pty) Ltd, South Africa Gerhardus C Schutte --- Avima (Pty) Ltd, South Africa Elaine Basson --- Citrus Research International (Pty) Ltd, South Africa Mia J Groeneveld --- Stellenbosch University, South Africa Tankiso Mpholo --- Land Reform and Rural Development, South Africa Providence Moyo --- Citrus Research International (Pty) Ltd, South Africa Jessica C Winn --- Stellenbosch University, South Africa Paul H Fourie --- Citrus Research International (Pty) Ltd, South Africa Aletta E Bester van der Merwe --- Stellenbosch University, South Africa

Phyllosticta citricarpa is the causative agent of citrus black spot (CBS), a cosmetic fungal disease that has been reported in most of the citrus-growing regions of the world. The occurrence of CBS in orchards is predominantly controlled by the application...

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‘Yo Dumbfucks!’: Problematising “Transgressive” White Humour and the Use of Blackface in the Artworks of South African Visual Artist Anton Kannemeyer

Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Sharlene Khan --- University of the Witwatersrand, South Africa

Since the early 1990s, blackface has seen a resurgence in South Africa. In 2010, Pappa in Afrika, the artwork of White Afrikaner artist Anton Kannemeyer elicited public criticism. Interrogating Kannemeyer’s Pappa in Afrika, this paper questions assumptions of blackface’s parodic...

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Shepherding is not a shot in the dark: evidence of low predation losses from the Northern Cape province of South Africa

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: --- , South Africa --- University of Mpumalanga, South Africa --- University of the Free State, South Africa --- University of the Free State, South Africa --- Nelson Mandela University, South Africa --- Nelson Mandela University, South Africa

Predation threatens the viability of livestock farming, while lethal predator management can negatively influence wildlife ecology. There is renewed interest in non-lethal vs lethal methods of livestock protection, but a systematic comparison is lacking. Using multivariate models, we explored how...

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Under- or -overreaction: Investors’ response to black swan events

Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Luu Thu Quang --- Ho Chi Minh University of Banking, Ho Chi Minh City,

The objective of this study is to explore whether four categories of investors overreact or underreact to specific black swan events in the Vietnam Stock Exchange (HSX) and whether their trading patterns can predict stock returns. We find evidence of...

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A taxonomic revision of Arnot’s Chat Myrmecocichla arnotti (family Muscicapidae)

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Robert J Dowsett --- , France Sylke Frahnert --- Leibniz Institute for Evolution and Biodiversity Science, Germany Françoise Dowsett-Lemaire --- , France

Arnot’s Chat Myrmecocichla arnotti in the family Muscicapidae is largely confined to the woodlands of the Zambezian biome of south-central Africa. This work assesses its taxonomic status, including comments on the so-called Ruaha Chat M. [a.] collaris (also named M...

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Population status of the range-restricted Red Lark Calendulauda burra in a conservation area stronghold

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Ryno Kemp --- DSI-NRF Centre of Excellence at the FitzPatrick Institute, South Africa Robin Colyn --- BirdLife South Africa, Science and Innovation Programme, South Africa Marc T Freeman --- DSI-NRF Centre of Excellence at the FitzPatrick Institute, South Africa Andrew E McKechnie --- DSI-NRF Centre of Excellence at the FitzPatrick Institute, South Africa

Many desert birds are vulnerable to anthropogenic global warming and landscape transformation, particularly in the case of range-restricted species. We quantified suitable habitat and the current population of Red Larks Calendulauda burra (family Alaudidae), a range-restricted southern African species, in...

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$Fire suppression interacts with soil acidity to maintain stable recalcitrant pyrogenic carbon fractions in South African mesic grasslands soil$

Fire suppression interacts with soil acidity to maintain stable recalcitrant pyrogenic carbon fractions in South African mesic grasslands soil

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Robyn E Nicolay --- University of KwaZulu-Natal, South Africa Ntuthuko R Mkhize --- University of KwaZulu-Natal, South Africa Michelle J Tedder --- University of KwaZulu-Natal, South Africa Kevin P Kirkman --- University of KwaZulu-Natal, South Africa

Grassland ecosystems have evolved alongside fire, a fundamental element that shapes and sustains their ecological balance. Recent research indicates that carbon produced during pyrogenic events in fire-dependent ecosystems may occur in more recalcitrant forms within deeper soil horizons. Notably, refractory...

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Anticolonial Networks and Unbalances in Literary Journals and Bulletins: Mensagem, Présence Africaine and Black Orpheus

Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Noemi Alfieri --- CHAM, NOVA FCSH/UaC, Portugal

This paper looks at the connections between the editorial projects of Mensagem (edited in Lisbon, by Casa dos Estudantes do Império, 1948–1965), Présence Africaine (Paris, France and Dakar, Senegal, from 1947) and Black Orpheus (Ibadan, Nigeria, 1957–1975). It reflects on...

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Risk and protective factors of suicide ideation and attempts among justice-involved black girls: A latent profile analysis

Item type: Journal Article • Journal: Journal of Child & Adolescent Mental Health • Authors: Lin Liu --- University of Florida, United States of America

Background: Justice-involved female youth from minority racial groups are a hard-to-reach youth population that are removed from schools, families, and communities. They are under-represented in school survey data. The present study aimed to utilise the Interpersonal-Psychological Theory of Suicide to...

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Text-mining approach with Black–Litterman model: A case study of Armenian pension funds

Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Ruben Gevorgyan --- Head of Data Science for Business Master Program at Yerevan State University, Armenia Rita Hovhannisyan --- Yerevan State University, Armenia

Pension fund managers face challenges in acquiring, analysing, and synthesising external information to make informed investment decisions. Text-mining and sentiment analysis can aid fund managers integrate contrasting news, financial data, and market speculation into their decision rubric. Considering Armenia pension...

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Isihloko: “Yintoni esegameni?” Uhlalutyo lwamagama athiywe abalinganiswa abangamanina kwiincwadi ezikhethiweyo zesiXhosa

Item type: Journal Article • Journal: South African Journal of African Languages • Authors: Nompumelelo Kapa --- University of Fort Hare Alice, South Africa Lukhanyo Elvis Makhenyane --- University of Johannesburg, South Africa

Ukuthiywa igama kwabalinganiswa kuncwadi yinxalenye yokubunjwa kwabalinganiswa. Igama umbhali alithiyayo liba yinxalenye yengqiqo yombhali noko anqwenela ukudlulisa ngencwadi ayibhalileyo, kuba amagama anentsingiselo enzulu yaye abhekiselele kwimiba ebalulekileyo. Amagama abantu kumaXhosa akhelwa kumnombo weziduko, kubuKrestu, amava osapho umntwana azalelwe kulo, okulindelwe...

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Executive pay, committee diversity and financial performance of JSE-listed companies

Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Reon Matemane --- University of Pretoria, South Africa Oloyede Obagbuwa --- Walter Sisulu University, South Africa Kwabena Agyarko Gyekye --- University of Pretoria, South Africa Herman Sello Mphela --- University of Pretoria, South Africa

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