Browsing Masters Degrees (Conservation Ecology and Entomology) by Title
Now showing items 86-105 of 226
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Entomopathogenic nematodes : characterization of a new species, long–term storage and control of obscure mealybug, Pseudococcus viburni (Hemiptera: Pseudococcidae) under laboratory conditions
(Stellenbosch : University of Stellenbosch, 2009-12)ENGLISH ABSTRACT: The obscure mealybug, Pseudococcus viburni (Signoret) (Pseudococcidae), is one of the common and serious pests of apples and pears in South Africa. The management of this pest in South Africa is dominated ... -
Entomopathogenic nematodes for the control of the vine mealybug (Planococcus ficus) in South African wine and table grapes
(Stellenbosch : Stellenbosch University, 2013-12)ENGLISH ABSTRACT: Planococcus ficus (Signoret) (Hemiptera: Pseudococcidae), the vine mealybug, is of economic importance to the wine and table grape (viticulture) industries, as it characteristically causes more damage ... -
Evaluation of macro-invertebrates as bio-indicators of water quality and the assessment of the impact of the Klein Plaas dam on the Eerste River
(Stellenbosch : University of Stellenbosch, 2005-12)A semi-arid country, like South Africa, with unpredictable seasonal rainfall, is subject to great scarcity in water and an ever-increasing demand from the rising human population. Therefore, efficient reservoirs as well ... -
Evaluation of the effect of microclimate differences on activity of codling moth, Cydia pomonella (Lepidoptera : Tortricidae), using pheromone trap capture data collected in apple and pear orchards in the Langkloof Region
(Stellenbosch : Stellenbosch University, 1999-11)ENGLISH ABSTRACT: Catches of male codling moth, Cydia pomonella (L.), using 400 pheromone-baited sticky traps in 200 orchards in the Langkloof during 1992 - 1995 were associated with four geographically distinct areas. ... -
Examining the spatiotemporal dynamics of exotic plants in a montane grassland : mechanisms and management
(Stellenbosch : Stellenbosch University, 2019-04)ENGLISH ABSTRACT: Despite a surge of research on exotic species in alpine habitats, a lack of reliable baseline data has inhibited long-term understanding about exotic species dynamics in mountain ecosystems across the ... -
Factors affecting alien grass invasion into West Coast Renosterveld fragments
(Stellenbosch : Stellenbosch University, 2004-03)ENGLISH ABSTRACT: With only 1.76% conserved West Coast Renosterveld remaining it is crucial to prioritize the conservation and management of this fragile vegetation type. Because of its occurrence on fertile soils, ... -
The feeding ecology of yearling, juvenile and sub-adult Nile crocodiles, Crocodylus niloticus, in the Okavango Delta, Botswana
(Stellenbosch : University of Stellenbosch, 2006-12)The stomachs of 286 crocodiles (17 cm to 166 cm snout to vent length) were lavaged over a two year period. Crocodylus niloticus has a similar ontogenetic shift in diet to that of other crocodilians. Yearlings predated ... -
Field biology and identification of fruit flies in the Western Cape Province
(Stellenbosch : Stellenbosch University, 2004-12)ENGLISH ABSTRACT: Two fruit fly species, Ceratitis capitata (Wiedemann) and C. rosa (Karsch) (Diptera: Tephritidae) are known to attack deciduous fruit in the Western Cape Province of South Africa. The relative abundance ... -
Fruit fly (Diptera : Tephritidae) ecology in the Western Cape, South Africa
(2015-12)ENGLISH ABSTRACT: The Mediterranean fruit fly (medfly) Ceratitis capitata (Wiedemann) and the Natal fly C. rosa Karsch are two important tephritid pest species of commercially grown deciduous fruit in the Western Cape. ... -
Future-proofing food : striving towards minimal insecticidal application in Western Cape pome fruit orchards
(Stellenbosch : Stellenbosch University, 2015-04)ENGLISH ABSTRACT: Increasing pressure on food production and the concern over maintenance of biodiversity and ecosystem services is creating an urgent need to future-proof food production, while maintaining the natural ... -
Fynbos riparian biogeochemistry and invasive Australian acacias
(Stellenbosch : Stellenbosch University, 2012-03)ENGLISH ABSTRACT: Riparian ecotones, transitional areas between upland terrestrial communities and aquatic ecosystems, are very dynamic and complex ecosystems with intrinsic ecological properties differing in spatial ... -
Gap regeneration in the Tsitsikamma forest (Easter Cape, South Africa) : the effect of gap size and origin
(Stellenbosch : Stellenbosch University, 2005-12)ENGLISH ABSTRACT: Recognizing the biological significance of gaps, the South African Department of Water Affairs and Forestry (DWAF) in 1989 initiated a Gap Dynamics Project in the indigenous forests of Tsitsikamma ... -
Die gebruik van 'n swaainet vir die monitering en diversiteitsbepaling van insekte op lusern in die Wes-Kaap
(Stellenbosch : Stellenbosch University, 2002-03)ENGLISH ABSTRACT: Lucerne is the most important pasture and fodder crop in the winter rainfall area of South Africa. Various pests are known to cause damage to this crop. The use of the sweep net for monitoring pests ... -
Genetic diversity of root-infesting woolly apple aphid Eriosoma lanigerum (Hausmann) (Hemiptera: Aphididae) populations in the Western Cape
(Stellenbosch : Stellenbosch University, 2003-03)ENGLISH ABSTRACT: Characterizing the genetic structure of a pest population can provide an understanding of the factors influencing its evolution and assist in its ultimate control. The aim of the present study was to ... -
Grasshoppers of azonal riparian corridors and their response to land transformation in the Cape Floristic Region
(Stellenbosch : Stellenbosch University, 2016-03)ENGLISH ABSTRACT: The Cape Floristic Region (CFR) is a global biodiversity hotspot with high levels of endemism across many taxa, including Orthoptera. Azonal vegetation, a much forgotten component of the CFR, is a unique ... -
Habitat partitioning, and an assessment of habitat suitability using presence data, of a large herbivore communitiy on a Zimbabwean private wildlife reserve
(Stellenbosch : University of Stellenbosch, 2003-12)ENGLISH ABSTRACT: The factors determining habitat selection of large herbivores, on a private wildlife reserve in semi-arid southeastern Zimbabwe, were investigated. Gross vegetative structure, herbaceous composition and ... -
Habitat use and diet selection of reintroduced white rhinoceros (Ceratotherium simum) in Pafuri, Kruger National Park
(Stellenbosch : Stellenbosch University, 2009-03)ENGLISH ABSTRACT: In 2005, six white rhinoceros (Ceratotherium simum) were reintroduced into Pafuri, in the far northern section of Kruger National Park (KNP), South Africa, as part of a large mammal reintroduction ... -
The Harlequin ladybeetle Harmonia axyridis (Coleoptera: Coccinellidae) in the Western Cape Province, South Africa: effects on arthropods in urban, agricultural and natural ecosystems
(Stellenbosch : Stellenbosch University, 2015-12)ENGLISH ABSTRACT: Invasive arthropod predators are one of the largest and most diverse groups of invasive insects in the world. Many are generalist predators, with cosmopolitan distributions due to their use as biological ... -
Historical relationship of the honeybee (Apis Mellifera) and its forage; and the current state of beekeeping within South Africa
(Stellenbosch : Stellenbosch University, 2014-12)ENGLISH ABSTRACT: Apis mellifera, the honeybee, is regarded as the most crucial insect pollinator to South African agriculture as it is the only managed pollinator used in the pollination of commercial agricultural crops. ... -
How flower visitation of remnant grassland patches is affected by commercial timber plantations and an invasive alien species (Rubus cuneifolius)
(Stellenbosch : Stellenbosch University, 2015-12)ENGLISH ABSTRACT: Our planet is in the midst of a biodiversity crisis, with factors such as land transformation, climate change, anthropomorphic disturbance and invasive species acting together to threaten biodiversity. ...
