Browsing by Author "Du Plessis, Hannalene"
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The charismatic praying mantid: a gateway for insect conservation
Greyvenstein, Bianca; Du Plessis, Hannalene; Van den Berg, Johnnie (Taylor & Francis, 2020)Praying mantids (Mantodea) are not only apex predators with a ‘mystical’ status, but are also regarded as a kind of oracle and, in some cultures, as omens associated with good or bad. In the future, the cultural, mystical ... -
Chemical additives enhance the activity of a Bt‐based biopesticide targeting the beet webworm larvae
Opisa, Selpha; Du Plessis, Hannalene; Akutse, Komivi Senyo; Fiaboe, Komi Kouma Mokpokpo; Ekesi, Sunday (Wiley, 2020)Spoladea recurvalis (Fbr.) (Lepidoptera: Crambidae) larvae can cause up to 100% foliage loss on amaranths during severe outbreaks. The Bacillus thuringiensis Subsp. kurstaki product Halt® is a biologically safe biopesticide ... -
Distribution of Galepsus spp. in Southern Africa and life history of Galepsus lenticularis (Mantodea: Tarachodidae)
Greyvenstein, Bianca; Du Plessis, Hannalene; Van den Berg, Johnnie; Moulin, Nicolas (MDPI, 2020)Galepsus Stäl is a genus within the Mantodea and has hardly been studied in Africa. The distribution of the Galepsus genus in Southern Africa was established, based on insect collection records, and the biology of Galepsus ... -
Diversity of fall armyworm, Spodoptera frugiperda and their gut bacterial community in Kenya
Gichuhi, Joseph; Van den Berg, Johnnie; Du Plessis, Hannalene; Sevgan, Subramanian; Khamis, Fathiya (PeerJ, 2020)Background The invasive fall armyworm, Spodoptera frugiperda (J.E. Smith) is a polyphagous pest that causes widespread damage particularly to maize and sorghum in Africa. The microbiome associated with S. frugiperda could ... -
The effect of different host plants on development and survival of Nysius natalensis (Hemiptera: Orsillidae)
Du Plessis, Hannalene; Van den Berg, Johnnie; Byrne, Marcus (Oxford University Press, 2015)Nysius natalensis Evans (Hemiptera: Orsillidae) is a pest of sunflower in South Africa. Adults invade sunflower fields from their weedy hosts. The host plant suitability for development and survival and the effect of ... -
Efficacy of fish- and hydramethylnon-based baits for conservation of the African weaver ant Oecophylla longinoda (Hymenoptera: Formicidae) during cashew off-seasons in Tanzania
Olotu, Moses I.; Du Plessis, Hannalene; Seguni, Zuberi S.; Ekesi, Sunday; Maniania, Nguya K. (Cambridge Univ Press, 2015)The efficacy of fish- and hydramethylnon-based baits for conservation of the African weaver ant (AWA) Oecophylla longinoda Latreille was evaluated at orchards in Bagamoyo and Mkuranga districts, Coast region of Tanzania, ... -
Efficacy of the African weaver ant Oecophylla longinoda (Hymenoptera: Formicidae) in the control of Helopeltis spp. (Hemiptera: Miridae) and Pseudotheraptus wayi (Hemiptera: Coreidae) in cashew crop in Tanzania
Olotu, Moses I.; Du Plessis, Hannalene; Seguni, Zuberi S.; Maniania, Nguya K. (Wiley, 2013)BACKGROUND:Cashew, Anacardiumoccidentale, is aneconomically important cash crop formorethan 300 000 rural households in Tanzania. Its production is, however, severely constrained by infestation by sap-sucking insects such ... -
Historic distribution and life history of the African twig mantid, Popa spurca (Mantodea: Deroplatyidae) in southern Africa
Greyvenstein, Bianca; Du Plessis, Hannalene; Van den Berg, Johnnie (Taylor & Francis, 2020)(Stål) (Deroplatyidae) is a well-known species within the African Mantodea. Because this species is often kept as pets, several citizen-based platforms provide information on the rearing of this species. There is however ... -
Introgression of a cry1Ab transgene into open pollinated maize and its effect on Cry protein concentration and target pest survival
Erasmus, Reynardt; Pieters, Rialet; Du Plessis, Hannalene; Van den Berg, Johnnie; Hilbeck, Angelika (Public Library of Science, 2019)In Africa, the target pests of genetically modified Bt maize are lepidopteran stem borers, notably Busseola fusca (Lepidoptera: Noctuidae). Gene flow between Bt maize hybrids and open pollinated varieties (OPVs) that do ... -
A journey towards pest management / Hannalene du Plessis
Du Plessis, Hannalene (North-West University (South Africa). Potchefstroom Campus, 2023) -
Metarhizium anisopliae and Beauveria bassiana: pathogenicity, horizontal transmission, and their effects on reproductive potential of Thaumatotibia leucotreta (Lepidoptera: Tortricidae)
Mkiga, Abdullah Mohamed; Du Plessis, Hannalene; Mohamed, Samira Abuelgasim; Khamis, Fathiya Mbarak; Akutse, Komivi Senyo (Oxford Univ Press, 2020)The polyphagous moth, Thaumatotibia leucotreta (Meyrick) is among the major constraints to the horticultural industry in East Africa. In a search of sustainable control methods, the pathogenicity of the dry conidia of 17 ...