Browsing Biological Sciences by Title
Now showing items 51-70 of 80
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A re-appraisal of the holothuroid genera Pseudocnus Panning, 1949 and Pseudocnella Thandar, 1987 based on morphological and, for the latter, also molecular evidence (Echinodermata : Holothuroidea : Dendrochirotida : Cucumariidae)
After the erection of the genus Pseudocnella by Thandar (1987) to accommodate three southern African Cucumariids and a Mediterranean form, then classified in Pseudocnus, certain problems still remained. In addition to this ... -
A revision of the taxonomy and phylogenetic background of the South African genus Kazimierzus Plisko, 2006 (Oligochaeta: Kazimierzidae)
(2018)Species identity and distribution information is important in conservation and monitoring of biodiversity. Megadrile fauna is very diverse in Southern Africa with most of the fauna demonstrating high levels of endemism, ... -
The role of floral and fruit scent compounds as mosquito attractants : developing new methods for monitoring mosquito populations.
(2016)Abstract available in PDF file. -
Roles of ROS scavenging enzymes and ABA in desiccation tolerance in ferns.
(2018)The fern species Loxogramme abyssinica and Crepidomanes inopinatum occur widely in KwaZulu Natal Afromontane forests. Although both species are suspected to be desiccation tolerant (DT), little is known about their mechanisms ... -
Screening, selection and clonal propagation of Amaranthus dubius genotypes with different calcium and iron content.
(2018)Decontamination of Amaranthus dubius field-derived nodal explants was achieved in a 10 min soak with 1% (v/v) NaOCl and 2 drops of Tween 20® followed by three rinses in sterile distilled water, immersion in an antibiotic ... -
Secretory structures of croton gratissimus Burch. Var. gratissimus (Euphorbiaceae): Micromorphology and Histophytochemistry.
(2018)Croton gratissimus Burch. variety (var.) gratissimus (Euphorbiaceae) has a widespread distribution in tropical Africa and is frequently used in African traditional medicine to treat various ailments. In South Africa, ... -
Selection and micropropagation of solanum nigrum genotypes with varying calcium and iron content.
(2018)A direct organogenesis protocol was established for Solanum nigrum using leaf explants from seedling plants. The post acclimatisation yield of the seedling-derived leaf explants was 25 plants/explant. It included decontaminating ... -
Sex rather than wastewater associated stresses determines intestinal bacterial communities in the insectivorous bat, neoromicia nana.
(2017)Wastewater treatment works (WWTWs) receive influent from domestic, agricultural and industrial sources, producing a cocktail of toxicants at these sites. WWTWs are unable to remove all the toxicants or bacterial and viral ... -
The silencing of HER2/neu gene expression in a breast cancer cell model using cationic lipid based delivery systems.
(2016)Abstract available in PDF file. -
Small mammal responses to Scarp Forest Restoration in the Maputoland-Pondoland-Albany Hotspot, South Africa.
(2017)Restoration ecology is a relatively new field. Although a range of attributes have been used to assess restoration success, they have not been standardised across studies. Recently, three main ecological attributes have ... -
Socio-economic and environmental deteminants of malaria in four malaria endemic provinces of Zambia.
(2015)A large fraction of the global malaria burden occurs in sub-Saharan Africa and its endemicity depends on the interaction of environmental factors, vectors, parasites and the host. In Zambia, the negative effect of the break ... -
Spatio-temporal analysis of woody vegetation data at various height classes within a semi-arid savanna : insights on environmental drivers, distributions and dynamics.
(2015)Savanna vegetation is regulated by bottom-up (e.g. soil and rainfall) and top-down (e.g. fire and herbivory) factors. Little is known about how these factors influence biodiversity at regional scales, particularly spatial ... -
Structure, biology and chemistry of plumbago auriculata (plumbaginaceae).
(2017)Plumbago auriculata Lam. is endemic to South Africa and is often cultivated for its ornamental and medicinal uses throughout the world. Belonging to the family Plumbaginaceae this species contains specialized secretory ... -
Studies on the behaviour of intracellular water during dehydration and cryopreservation of embryos and shoot tips of Trichilia emetica.
(2017)Abstract available in PDF file. -
Studies on the biology, fungal contamination, and conservation of seeds of Welwitschia mirabilis Hook. fil.
(2006)Abstract available in PDF file. -
Systematic revision of Southern African species in the genera Eptesicus, Neoromicia, Hypsugo and Pipistrellus (Chiroptera: Vespertilionidae).
(2005)Abstract available in PDF file. -
A systematic study of the genus rhoicissus planch, (vitaceae) in KwaZulu-Natal.
(2015)The family Vitaceae, sometimes referred to as the grape family, comprises about 700 to 800 species and 13 to 14 genera, which includes Rhoicissus Planch. Rhoicissus contains 12 species all of which are described as climbing ... -
Taxonomic revision of the Memecylon natalense species-complex in southern Africa.
(2018)iv ABSTRACT Two Memecylon species (M. natalense and M. bachmannii) were previously recognized in southern Africa, and three species of M. section Buxifolia as occurring in Mozambique (M. natalense, M. torrei and M. ... -
Technique establishment for in vitro selection of drought tolerant sugercane genotypes.
(2015)There is a need to have constant supply of sugarcane varieties adapted to different South African regions. However, the genetic improvement and selection of sugarcane cultivars with superior traits, e.g. drought tolerance, ...