Department of Conservation Ecology and Entomology
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Recent Submissions
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Woody encroachment as a social-ecological regime shift
(MDPI, 2018-06-28)African savannas are increasingly affected by woody encroachment, an increase in the density of woody plants. Woody encroachment often occurs unexpectedly, is difficult to reverse, and has significant economic, cultural ...
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Restoration potential of alien-invaded Lowland Fynbos
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: Widespread degradation of ecosystems on a global scale has led to the need for ecological restoration in order to more effectively conserve and manage threatened ecosystems. While this is an emerging ...
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Drought stress responses in wild and cultivated Aspalathus linearis of the Suid Bokkeveld, Northern Cape Province of South Africa : linkages between local knowledge and empirical evidence
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: The north-western region of the Western Cape forms part of the Fynbos biome and is home to the indigenous plant, A. linearis (rooibos). Rooibos cultivation is restricted to a small geographic area with ...
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Integrative taxonomy of the endemic Karoo agile grasshoppers, the Euryphyminae
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: The Euryphyminae are a small, African subfamily of grasshoppers which are not very well known. They are endemic to sub-Saharan Africa and consist of 23 genera, 16 of which have records of occurrence in ...
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Conservation of diverse parasitoid assemblages across agricultural mosaics within the Cape Floristic Region, South Africa
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: The ever-growing agricultural industry within the Cape Floristic Region (CFR) threatens many arthropod species, including functionally beneficial insects such as parasitoids. Damage caused by insect pests ...
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Transitioning to organic agriculture : the changes in arthropod biodiversity and pests over time
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: The Greater Cape Floristic Region (GCFR) is a unique area known for its incredible biodiversity. It is also the largest wine-grape producing area in South Africa. However, agriculture and more specifically ...
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Ring nematode (Criconemoides xenoplax), distribution, characterisation and culture methods
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: The ring nematode, Criconemoides xenoplax (Raski, 1952) Loof & De Grisse, is described as a migratory ectoparasitic nematode that feeds entirely on the roots of plants, mainly those of woody perennials. ...
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Mite (acari) ecology within protea communities in the Cape Floristic Region, South Africa
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: Protea is a key component in the Fynbos Biome of the globally recognised Cape Floristic Region biodiversity hotspot, not only because of its own diversity, but also for its role in the maintenance of ...
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Biologically based methods for pest management in agriculture under changing climates : challenges and future directions
(MDPI, 2012)The current changes in global climatic regimes present a significant societal challenge, affecting in all likelihood insect physiology, biochemistry, biogeography and population dynamics. With the increasing resistance of ...
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Ecosystem services of palmiet wetlands : the role of ecosystem composition and function
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: Ecosystems are the critical infrastructure that provides society with multiple essential services. A change from one land-use to another (e.g. wetlands to agriculture) may result in trade-offs, or ...
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Ecology of apex predators in Majete Wildlife Reserve, Malawi.
(Stellenbosch : Stellenbosch University, 2017-12)ENGLISH ABSTRACT: Apex carnivores play an important role in the ecosystem by regulating prey via predation. Anthropogenic influences have resulted in rapid range and population reductions of large carnivores across the ...
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Ecology of plains zebra (Equus quagga) in Majete Wildlife Reserve, Malawi
(Stellenbosch : Stellenbosch University, 2017-12)ENGLISH ABSTRACT: Zebras occur throughout Africa and are responsible for sustaining the dynamics and overall well-being of the environments they reside in. However, zebras have experienced significant range reductions and ...
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Conservation of spider diversity within an agricultural mosaic : insights from the Greater Cape Floristic Region, biodiversity hotspot.
(Stellenbosch : Stellenbosch University, 2017-12)ENGLISH ABSTRACT: Agricultural expansion is one of the main drivers of habitat fragmentation and land use change which negatively impacts biological diversity. The Greater Cape Floristic Region (GCFR), a biodiverse hotspot, ...
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The diversity and distribution of topsoil and leaf litter arthropods in timber plantation landscape mosaics
(Stellenbosch : Stellenbosch University, 2017-12)ENGLISH ABSTRACT: Landscape planning for conservation is of great importance in high-impact production systems, such as commercial timber plantations. Ecological networks (ENs) have been applied on a large scale in exotic ...
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Investigating the above-ground application of EPNs for the control of the vine mealybug Planococcus ficus
(Stellenbosch : Stellenbosch University, 2017-12)ENGLISH ABSTRACT: The table and wine grape industries in South Africa are of major economic importance, particularly within the Western Cape Province, making the pest control of grapevines a priority. The vine mealybug ...
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Prospects for using entomopathogenic nematodes as a biocontrol agent against fungus gnats, bradysia spp. (Diptera: Sciaridae) in nursery and glass house crops
(Stellenbosch : Stellenbosch University, 2017-12)ENGLISH ABSTRACT: Fungus gnats of the genus Bradysia, have become important pests to undercover, cultivated crops. Commonly referred to as mushroom fly, nuisance flies, or dark-winged flies, they have a global distribution. ...
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Potential synergies between nature-based tourism and sustainable use of marine resources : insights from dive tourism in territorial user rights for fisheries in Chile
(Public Library of Science, 2016-03)Novel solutions to conserve biodiversity whilst allowing for resource harvesting are urgently needed. In marine systems, Territorial User Rights for Fisheries (TURFs) are promoted to enable sustainable use of resources. ...
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An exploration of human well-being bundles as identifiers of ecosystem service use patterns
(Public Library of Science, 2016-10)We take a social-ecological systems perspective to investigate the linkages between ecosystem services and human well-being in South Africa. A recent paper identified different types of social-ecological systems in the ...
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Radiation biology of Eldana saccharina (Lepidoptera: Pyralidae)
(Florida Entomological Society, 2016)The availability of a great number of infertile eggs can be regarded as a benefit in a program where natural enemies are combined with the SIT because non-fertile eggs can provide additional hosts for egg parasitoids and ...
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Stable isotope markers differentiate between mass-reared and wild Lepidoptera in sterile insect technique programs
(Florida Entomological Society, 2016)In this study we identified a number of moth (Lepidoptera) species that are potential targets for the sterile insect technique (SIT), and we assessed the feasibility of using stable isotope signatures as markers to distinguish ...
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General biology of Eldana saccharina (Lepidoptera: Pyralidae) : a target for the sterile insect technique
(Florida Entomological Society, 2016)Eldana saccharina Walker (Lepidoptera: Pyralidae: Gallerinae) occurs on many graminaceous crops and several wild grasses and sedges throughout Africa. It has been reared at the South African Sugarcane Research Institute ...
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Strategies for chemical control of root-knot nematodes (meloidogyne spp.) in established vineyards
(South African Society for Enology and Viticulture, 1986)Grape-vine root growth was measured for vertical and horizontal distribution as well as seasonal growth periods. The persistance of aldicarb and fenamiphos in the soil as well as in leaves and fruit of grape-vines was ...
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Population dynamics of the root-knot nematodes meloidogyne incognita (kofoid & white) chitwood and m. javanica (treub) chitwood on grapevines in two different regions of South Africa
(South African Society for Enology and Viticulture, 1987)Two root-knot nematode species, Me/oidogyne incognita and M.javanica, were studied with regard to their seasonal population fluctuations on grapevines growing in two vastly different climatic areas. Regular observations ...
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Dual cultures of meloidogyne javanica and grapevine rootstocks on artificial media
(South African Society for Enology and Viticulture, 1990)Grapevine rootstock cultivars were cultured on more than one artificial medium. Meloidogyne javanica was inoculated on the roots of different cultivars on seven media and penetration and development were recorded. Plate ...
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Interaction between a South African population of xiphinema index and different grapevine rootstocks
(South African Society for Enology and Viticulture, 1993)Thirty-one grapevine rootstocks were used to test for reproduction, root feeding symptoms and transmission of grapevine fanleaf virus by a South African population of Xiphinema index. Grapevine fanleaf virus was transmitted ...
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Distribution of longidoridae in the viticultural regions of the Cape Province
(South African Society for Enology and Viticulture, 1994)Soil samples from five viticultural regions in the Cape Province were analysed for the presence of longidorid nematodes. Sixteen species of Xiphinema were found, the most common species being X. elongatum, X. americanum ...
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The reproduction and life cycle of a South African population of xiphinema index
(South African Society for Enology and Viticulture, 1999)The seasonal fluctuation of a South African Xiphinema index population, the influence of four hosts on the length of the life cycle and the reproductive rate with fig as host at three different temperatures, were studied. ...
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Effects of pesticides used on table grapes on the mealybug parasitoid coccidoxenoides peregrinus (timberlake) (hymenoptera : encyrtidae)
(South African Society for Enology and Viticulture, 1999)The effects of regularly used table grape insecticides and fungicides on 1-day-old adults of the parasitoid Coccidoxenoides peregrinus (Timberlake) of vine mealybug, Planococcus ficus (Signoret), were determined in the ...
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Effects of Pesticides and Fungicides Used on Grapevines on the Mealybug Predatory Beetle Nephus 'boschianus' (Coccinellidae, Scymnini)
(South African Society for Enology and Viticulture, 2001)The effects of frequently used grapevine insecticides and fungicides on adults of the predatory beetle Nephus 'boschianus' of vine mealybug, Planococcus ficus (Signoret), were determined under laboratory conditions. When ...
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A survey of mealybugs and associated natural enemies in vineyards in the Western Cape Province, South Africa
(South African Journal of Enology & Viticulture, 2004)A survey of mealybugs and their associated natural enemies occurring in vineyards was conducted in the Western Cape Province during the 1999/2000 and 2000/2001 seasons. Planococcus ficus (Signoret) was the dominant mealybug ...
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