Iain Douglas Paterson

Host specificity and establishment of Paradibolia coerulea (Chrysomelidae), a biological control agent for African tulip tree ( Spathodea campanulata (Bigoniaceae)) in the Cook Islands, South Pacific

Iain Douglas Paterson, Phillippa Muskett, Guy F. Sutton, Quentin E. Paynter

Afrique du Sud, nz (code pays fourni par la source)

Population genetics and invasion history of the invasive pickerelweed (Pontederia cordata) in South Africa

Sage N. L. Wansell, Sjirk Geerts, Iain Douglas Paterson, Julie A. Coetzee

Abstract Clonality plays an important role in the proliferation of invasive species and can facilitate invasive success by reducing reliance on sexual reproduction and promoting spread of genetically identical individuals. Clonal invasions are advantageous for biological control strategies, as biological control agents …

Afrique du Sud (code pays fourni par la source)

Population genetics elucidates invasion pathways and informs biocontrol strategies for the crystalline ice plant ( Cryophytum crystallinum ) in North America

Clarke J. M. van Steenderen, Emma Sandenbergh, Dean R. Brookes, Patrick J. Moran et autres

Abstract Crystalline ice plant [ Cryophytum crystallinum (L.) N.E. Br.] is a succulent plant indigenous to South Africa. It is a highly invasive weed in North America. There are currently three weevil species from the native range that show promise as potential …

Afrique du Sud, au, us, it (code pays fourni par la source)

Population Genetics Reveals the Invasion Pathways of Mesembryanthemum nodiflorum in North America

Clarke J. M. van Steenderen, Emma Sandenbergh, Dean R. Brookes, Patrick J. Moran et autres

ABSTRACT Invasive populations of the slenderleaf iceplant, Mesembryanthemum nodiflorum L., are problematic along the west coast of North America. The plant is hypothesised to originate from southern Africa, though it has established populations in North Africa and the Mediterranean. There is interest …

Afrique du Sud, au, us (code pays fourni par la source)

Biocontrol of thistle cholla cactus, Cylindropuntia pallida : a successful agent in Australia is incompatible with the invasive populations in South Africa

Wade Sexton, Phillippa Muskett, Andrew John McConnachie, Liberato Portillo et autres

Cylindropuntia pallida F.M. Knuth (Cactaceae) is an invasive alien species in Australia and South Africa. Two lineages of the cochineal insect Dactylopius tomentosus Lamark were considered as potential biocontrol agents for C. pallida in South Africa. One lineage, referred to as ‘californica …

Afrique du Sud, au, mx (code pays fourni par la source)

Using pre-release efficacy as a candidate agent prioritisation tool for the weed Trichocereus spachianus (Caryophyllales: Cactaceae)

Tamzin C. Griffith, María Belén Aguirre, Guy F. Sutton, Lenin Dzibakwe Chari et autres

Abstract Pre-release efficacy assessments (PREA) can be used to prioritise the most damaging candidate agents for further studies in biological control programmes against invasive alien plants. This study assessed the efficacy of various potential enemies of Trichocereus spachianus (Riccob.) (Caryophyllales: Cactaceae), an …

Afrique du Sud, ar (code pays fourni par la source)

Hybridisation between two Dactylopius opuntiae (Homoptera: Dactylopiidae) lineages and implications for host plant affinities

Kedibone Mofokeng, Iain Douglas Paterson, Hildegard Klein

A population of Dactylopius opuntiae (referred to as the ‘engelmannii’ lineage) is a potential biocontrol agent against invasive Opuntia megapotamica in South Africa. The ‘engelmannii’ lineage and the already established ‘ficus’ and ‘stricta’ lineages of the same cochineal species will hybridise where …

Afrique du Sud (code pays fourni par la source)

Species delimitation and molecular dating of southern African Tetramesa (Hymenoptera: Eurytomidae): An understudied microhymenopteran group

Clarke J. M. van Steenderen, Guy F. Sutton, Liam D. Yell, Kim Canavan et autres

Abstract The genus Tetramesa Walker (Hymenoptera: Eurytomidae) comprises over 200 species of herbivorous wasps that feed exclusively on grasses. Recent field surveys in South Africa for grass biological control programs have uncovered a large diversity of potential Tetramesa on African grasses. Here, …

Afrique du Sud (code pays fourni par la source)

A new genus and two new species of gall midges (Diptera: Cecidomyiidae) feeding on Guinea grass Megathyrsus maximus (Poaceae) in Africa

Peter Kolesik, Guy F. Sutton, Clarke J. M. van Steenderen, Dino J. Martins et autres

Abstract Two new species of gall midges are described whose larvae feed on the small morphotype of Guinea grass Megathyrsus maximus in Africa. Arabukodiplosis basalis Kolesik, gen. et sp. nov. causes galls at the base of plant's crown in Kenya and Arabukodiplosis …

au, Afrique du Sud, us (code pays fourni par la source)

Biological control against Opuntia aurantiaca Lindley (Cactaceae) and the perceptions of land-users in the Eastern Cape Province of South Africa

Zezethu Mnqeta, Iain Douglas Paterson

Invasive alien cacti threaten indigenous biodiversity and negatively impact agricultural productivity in the Eastern Cape Province. One of the most problematic species is jointed cactus, Opuntia aurantiaca Lindley (Cactaceae). A biological control agent, the cochineal insect Dactylopius austrinus De Lotto (Dactylopiidae), is …

Afrique du Sud (code pays fourni par la source)

Editorial: The XVI international symposium on biological control of weeds

Iain Douglas Paterson, G.J. Cabrera Walsh

Afrique du Sud, ar (code pays fourni par la source)

Enhancing pre-release studies for weed biocontrol agents: A review of existing and emerging tools

Hariet L. Hinz, Guillermo Cabrera Walsh, Iain Douglas Paterson, Quentin E. Paynter et autres

• Safety of weed biocontrol has further improved; success not at the same rate. • We review eight tools and procedures to enhance pre-release weed biocontrol studies. • They are context specific and applicable to different stages of a project. • Traditional …

ch, au, Afrique du Sud, nz, us (code pays fourni par la source)