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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-movingExpand
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Water stress augments silicon-mediated resistance of susceptible sugarcane cultivars to the stalk borer Eldana saccharina (Lepidoptera: Pyralidae).
Silicon (Si) can improve resistance of plants to insect attack and may also enhance tolerance of water stress. This study tested if Si-mediated host plant resistance to insect attack was augmented byExpand
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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
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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
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Animal behaviour: Insect orientation to polarized moonlight
Moonlight, like sunlight, scatters when it strikes tiny particles in the atmosphere, giving rise to celestial polarization patterns. Here we show that an African dung beetle, Scarabaeus zambesianus,Expand
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Impact of nutrients and herbivory by Eccritotarsus catarinensis on the biological control of water hyacinth, Eichhornia crassipes
Abstract Many water hyacinth infestations in South Africa are the symptom of eutrophication, and as a result, biological control of this weed is variable. This study examined the effects of herbivoryExpand
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Larval performance of the pyralid borer Eldana saccharina Walker and stalk damage in sugarcane: Influence of plant silicon, cultivar and feeding site
Abstract Applied silicon (Si) can improve resistance of plants to insect attack. We investigated the interactions between soil applied Si, sugarcane cultivar, and three documented feeding/penetrationExpand
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Field assessment of a frond-feeding weevil, a successful biological control agent of red waterfern, Azolla filiculoides, in southern Africa
Abstract Azolla filiculoides (red waterfern) is a small, floating fern native to South America, that has invaded aquatic habitats, predominantly water resevoirs in southern Africa. A frond-feedingExpand
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Pairings of a distinctive chamber with the aftereffect of wheel running produce conditioned place preference
Wheel running reinforces behavior that precedes it. Also, wheel running can produce activity anorexia, a marked suppression of feeding in food-restricted rats. Some authors propose that the activityExpand
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Respiratory airflow in a wingless dung beetle.
  • F. Duncan, M. Byrne
  • Biology, Medicine
  • The Journal of experimental biology
  • 15 August 2002
The sealed subelytral cavity of many flightless beetle species is widely acknowledged to be an adaptation to water saving in arid-habitat species. However, this hypothesis relies on the acceptance ofExpand
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