Zobrazeno 1 - 10
of 90
pro vyhledávání: '"H. Geertsema"'
Publikováno v:
South African Journal of Enology and Viticulture, Volume: 41, Issue: 2, Pages: 218-232, Published: 2020
A leaf-mining pest occurring on commercial varieties of Vitis vinifera in South Africa was investigated due to the presence of cocoons on fruit. The leaf miner, Holocacista capensis , was reported on grapevines in 2012. Since its discovery on commerc
Autor:
H. Geertsema
Publikováno v:
African Zoology; Vol 35, No 2 (2000); 251-259
A new genus, Parapsycharium n.gen. and its type species, P. paarlense, are described in Somabrachyidae. A key to the somabrachyid genera Somabrachys Kirby, Psycharium Herrich-Schäffer and Parapsycharium n.gen. is given. The description of the new ta
Publikováno v:
African Entomology. 27:75
The carob moth, Ectomyelois ceratoniae (Zeller), is a polyphagous pest in hot and dry climates, such as the Mediterranean region, and occurs on citrus in South Africa, however, its pest status is not known. The aim of this research was to investigate
Publikováno v:
Bulletin of Entomological Research. 100:421-431
Comparative studies of the population genetic structures of agricultural pests can elucidate the factors by which their population levels are affected, which is useful for designing pest management programs. This approach was used to provide insight
Publikováno v:
African Entomology. 16:209-219
Four tortricid species are of major economic importance on deciduous fruit tree crops in South Africa. They are codling moth, Cydia pomonella, oriental fruit moth, Grapholita molesta, false codling moth, Thaumatotibia leucotreta, and carnation worm,
Publikováno v:
Annals of the Entomological Society of America. 101:197-203
Amplified fragment length polymorphism (AFLP) fingerprints were used to characterize the population genetic structure and gene flow of the oriental fruit moth, Grapholita molesta (Busck) (Lepidoptera: Tortricidae), for the first time in the major sto
Publikováno v:
African Entomology. 15:269-286
Three tortricid species are of major economic importance to the South African tropical and subtropical fruit industry. They are the false codling moth, Thaumatotibia leucotreta, the macadamia nut borer, T. batrachopa, and the litchi moth, Cryptophleb
Autor:
H. Geertsema, C. R. Owen
Publikováno v:
Journal of Insect Conservation. 11:43-46
The habitat restrictions of three species of Colophon (C. stokoei, C. neli, C. westwoodi) in the Cape Floristic Province are discussed, together with their patterns of seasonal activity and biological features in captivity, to augment the biological
Publikováno v:
Agricultural and Forest Entomology. 8:113-119
1 The macadamia nut borer Thaumatotibia (Cryptophlebia) batrachopa and the litchi moth Cryptophlebia peltastica are Afrotropical species causing extensive damage to cultivated macadamias and litchis in the northernmost provinces in South Africa. Cryp
Publikováno v:
Emu - Austral Ornithology. 105:293-297
The nectar of Protea inflorescences attracts sugarbirds (Promeropidae) as well as a large diversity of arthropods. In addition to feeding on nectar, sugarbirds feed on arthropods; but do sugarbirds feed on the arthropods within Protea inflorescences?