Browsing Natural and Agricultural Sciences by Title
Now showing items 2553-2572 of 2738
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Tadpole ecomorphological guilds and gut contents as a proxy for diatom diversity
(North-West University (South Africa), 2021)Tadpole development significantly depends on the availability of water. Metamorphosis will gradually allow tadpoles to inhabit terrestrial environments (Duellman & Trueb, 1986; Duellman & Trueb, 1994; Harvey Pough, 2007). ... -
Tadpole morphology of high altitude frogs from the Drakensberg mountains
(North-West University, 2010)This study resulted from the identification of gaps in the literature pertaining to the morphological descriptions of the tadpoles occurring at high altitudes in the Drakensberg Mountains in South Africa. These tadpoles ... -
Taksonomiese aspekte van die genus Bellamyua Jousseaume 1886 in Oostelike Suid-Afrika
(North-West University (South Africa), 1977)1. Die doel van hierdie ondersoek is om 'n basis te stel vir verdere werk wat mag lei tot 'n behoorlike hersining van die verteenwoordigers van die genus Bellamya in suidelike Afrika. 2. Die ondersoek is gebaseer op ... -
Taxonomic review and general biology of the genus Eupolystoma (Monogenea: Polystomatidae)
(North-West University, 2007)Polystomes are parasitic flatworms infecting mainly anuran hosts. Of the 21 known polystome genera only Eupolystoma, Metapolystoma, Polystoma and Protopolystoma are known from Africa. Although the genus Polystoma has a ... -
Taxonomic studies on some nematodes of the superfamily Dorylaimoidea from South Africa
(North-West University (South Africa), 1964)"Abstract not copied" -
A taxonomic study of the family Phytoseiidae [acari] in South Africa with contributions to the biology of two species
(North-West University (South Africa), 1966)"Abstract not copied" -
A taxonomic-morphological study of Boophilus Curtice, 1891 and Rhipicephalus Koch, 1844 [Acari : Metastigmata : Ixodidae]
(North-West University (South Africa), 1974)This investigation includes detailed morphological Scanning Electron Microscopic studies of both the immature and mature stages of RhipiaephaZus pravus, R, ocuZatus, R. appendiauZatus, BoophiZus deaoZoratus and B, ... -
Taxonomical study of predatory and plant-parasitic mites associated with South African Solanaceae
(North-West University, 2015)Plant-feeding mites represent major pests in agriculture that are of importance to crops world-wide, as large populations of mites reduce the quality and quantity of yields. Alternatives to the use of pesticides are needed ... -
A taxonomical–ecological investigation of the soil mesofauna in the rhizosphere of citrus trees at Zebediela Estates
(Potchefstroom University for Christian Higher Education, 1968)The purpose of this investigation was to assess the taxanomic - ecologic nature of Zebediela's citrus sol, situated in the eastern part of the Potgietersrus district, Northern Transvaal . Habitat descriptions are given, ... -
The taxonomy of the family Entomobryidae [Collembola] of South Africa
(North-West University (South Africa), 1968)"Abstract not copied" -
Taxonomy of the rectal endociliates of Xenopus laevis (Anura)
(North-West University (South Africa), 2023)Amphibians are hosts to a variety of parasite groups which include protozoans, cestodes, nematodes, acanthocephalans, monogenetic flukes, digenetic flukes, and mites. Nevertheless, of these parasite groups infecting ... -
Telomerase activity in response to RBBP6- Cannabidiol co-treatment in cervical cancer
(North-West University (South Africa), 2021)Cervical cancer ranks as the 4th most cited reason for mortalities amongst women across the globe. Accordingly, in 2018, 570 000 new individuals were diagnosed of cervical cancer. Early screening, detection and treatment ... -
Temporal assessment of atmospheric trace metals in the industrialised western Bushveld Complex
(North-West University, 2011)The presence of trace transition metal species in the atmosphere can be attributed to the emission of particulate matter into the atmosphere by anthropogenic activities, as well as from natural sources. Trace metals ... -
Temporal assessment of volatile organic compounds at a site with high atmospheric variability in the North–West Province
(North-West University, 2012)Volatile organic compounds (VOCs) are emitted into the atmosphere from biogenic and anthropogenic sources with atmospheric lifetimes ranging from minutes to months, depending on the specific VOC compound considered. It ... -
The temporal distribution and relative abundance of stable flies (Stomoxys calcitrans) (Diptera : Muscidae) in a feedlot near Heidelberg, Gauteng, South Africa
(North-West University, 2014)The stable fly, Stomoxys calcitrans (L.) is a haematophagous fly that feeds primarily on the forelegs of cattle stimulating a range of avoidance behaviours in confinement situations such as feedlots. From literature it ... -
Teratogenic properties of L-2,4-Diaminobutyric acid and polyamine levels in the murine neural tube defect model
(North-West University, 2007)L-2,4-Diaminobutyric acid (DABA) is a non-protein amino acid and constituent of numerous plants (i.e. Lathyrus species) and microorganisms. This relatively abundant amino acid is a known neurotoxin, neurolathyrogen and ... -
tert-Butyldimethylsilyl as an alternative for Trimethylsilyl derivatisation during organic acid analysis : a comparison
(North-West University (South Africa), 2023)One of the prevailing fundamental analyses for diagnosing patients with presumable inherited metabolic diseases is organic acid analysis which has the ability to diagnose a number of various diseases within a single run. ... -
Testing adequacy of fit in the random right censoring framework
(North-West University (South Africa), 2022)Statistical inference of observed lifetimes in survival analysis, reliability theory, medical studies and nu- merous engineering fields are frequently of interest for researchers. In order to perform inference, it ... -
Testing the application of social accounting matrix-based structural path analysis to urban agriculture in the Eastern Cape, South Africa
(North-West University, 2014)The study was conducted in order to test the application of the social accounting matrix-based structural path analysis to urban agriculture at the local level. This was part of an attempt to advance an alternative ... -
Testing the level of environmental regulatory awareness of freshwater recreational anglers in South Africa
(North-West University (South Africa), 2021)Freshwater recreational angling is growing in popularity internationally. Due to the potential negative environmental impacts different regulatory systems exist. In South Africa, freshwater recreational angling is regulated ...
