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Economic evaluation of the successful biological control of Azolla filiculoides in South Africa
Abstract Azolla filiculoides (red waterfern) is a floating fern native to South America which has invaded aquatic ecosystems in South Africa. Thick mats of A. filiculoides on dams and slow-moving… Expand
Life History and Laboratory Host Range ofEccritotarsus catarinensis(Carvalho) (Heteroptera: Miridae), a New Natural Enemy Released on Water Hyacinth (Eichhornia crassipes(Mart.) Solms-Laub.)…
Abstract A mirid,Eccritotarsus catarinensis(Carvalho), was studied as a potentially damaging natural enemy for water hyacinth, (Eichhornia crassipes(Mart.) Solms-Laub.), in South Africa. In the… Expand
A Review of the Biological Control Programmes on Eichhornia crassipes (C.Mart.) Solms (Pontederiaceae), Salvinia molesta D.S.Mitch. (Salviniaceae), Pistia stratiotes L. (Araceae), Myriophyllum…
Biological control against water hyacinth, Eichhornia crassipes (C.Mart.) Solms (Pontederiaceae), salvinia, Salvinia molesta D.S.Mitch. (Salviniaceae), water lettuce, Pistia stratiotes L. (Araceae),… Expand
Aquatic weeds in Africa and their control.
Carina J. Cilliers,1 Martin P. Hill,2 James A. Ogwang3 and Obinna Ajuonu4 1Agricultural Research Council – Plant Protection Research Institute, Biological Control of Weeds, Pretoria, South Africa;… Expand
The biological control of aquatic weeds in South Africa: Current status and future challenges
Background : Aquatic ecosystems in South Africa are prone to invasion by several invasive alien aquatic weeds, most notably, Eichhornia crassipes (Mart.) Solms-Laub. (Pontederiaceae) (water… Expand
The impact and control of alien aquatic vegetation in South African aquatic ecosystems
- M. Hill
- 1 January 2003
Water hyacinth, water lettuce, salvinia, parrot's feather and red water fern are South American aquatic plant species that have become invasive in aquatic ecosystems in South Africa. The lack of… Expand
Predicting the distribution of Eccritotarsus catarinensis, a natural enemy released on water hyacinth in South Africa
Water hyacinth [Eichhornia crassipes (Mart.) Solms (Pontederiaceae)] is the most damaging aquatic weed in South Africa, where five arthropod biological control agents have been released against it.… Expand
The prevalence of cervical ribs in a London population
Cervical ribs are an important cause of neurovascular compression at the thoracic outlet. Previous studies have shown the prevalence of cervical ribs to be between 0.05 and 3%, depending on the sex… Expand
Incretin levels in polycystic ovary syndrome.
OBJECTIVE Polycystic ovary syndrome (PCOS) has been linked to a high risk of type 2 diabetes mellitus. Disturbances in the secretion of the incretin hormones glucose-dependent insulinotropic… Expand
The decline of water hyacinth on Lake Victoria was due to biological control by Neochetina spp.
There has been some debate recently about the cause of the decline of water hyacinth on Lake Victoria. While much of this evidence points to classical biological control as the major factor, the El… Expand