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Transmission and movement of potential Citrus Tristeza Virus cross-protection sources in four soft citrus cultivars under greenhouse conditions
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: S.P. Van Vuuren --- , South Africa J.H.J Breytenbach --- , South AfricaCitrus Tristeza Virus (CTV), a member of the Closteroviridae family, is a globally distributed pathogen and is responsible for serious losses in citriculture. Infection with certain strains of the virus is associated with economically important diseases such as stem pitting,... -
Sampling variation in the quantification of fumonisins in maize samples
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: B. Janse van Rensburg --- , South Africa B.C. Flett --- , South Africa N.W. Mc Laren --- Department of Plant Sciences, 9300 South Africa A.H. Mc Donald --- ,Fumonisins produced by F. verticillioides and F. proliferatum cause mycotoxicoses in horses, swine and rats and have been associated with oesophageal cancer in humans. Accurate measurement of mycotoxins is essential for determining the safety of grain and their products for... -
From biomass mining to sustainable fishing — using abundance and size to define a spatial management framework for deep-water lobster
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JC Groeneveld --- , South Africa SP Kirkman --- Department of Environmental Affairs, South Africa M Boucher --- Marine Biology Research Institute, Department of Zoology, South Africa D Yemane --- Branch: Fisheries, Department of Agriculture, South AfricaBased on the assumption that depleted stocks would have recovered during a six-year layoff from fishing, trapping for deep-water spiny lobster Palinurus delagoae and slipper lobster Scyllarides elisabethae off eastern South Africa resumed in 2004 until 2007. A generalised linear... -
Identification of the marine diatom Pseudo-nitzschia multiseries (Bacillariophyceae) as a source of the toxin domoic acid in Algoa Bay, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: GC Pitcher --- Branch: Fisheries Management, Department of Agriculture, South Africa AD Cembella --- Alfred-Wegener Institut-Helmholtz Zentrum für Polar- und Meeresforschung, Germany B Krock --- Alfred-Wegener Institut-Helmholtz Zentrum für Polar- und Meeresforschung, Germany BM Macey --- Branch: Fisheries Management, Department of Agriculture, South Africa L Mansfield --- Branch: Fisheries Management, Department of Agriculture, South Africa TA Probyn --- Branch: Fisheries Management, Department of Agriculture, South AfricaA unialgal culture of a Pseudo-nitzschia species dominant in the plankton of Algoa Bay in the spring of 2012 was established by isolation of clonal chains of cells. Identification of the species as Pseudo-nitzschia multiseries was based on frustule morphometrics...