Plant morphological changes mediated by growth conditions are linked to changes in host preference of herbivores. Understanding how these morphological changes influence herbivore feeding is critical in the interpretation ...

Since the discovery of aster yellows phytoplasma on grapevine in South Africa in 2006, a concerted effort by various research groups to identify the vector(s) was co-ordinated by Winetech. This included qualitative and ...

BACKGROUND : The fall armyworm (FAW), Spodoptera frugiperda, is a devastating invasive pest and a threat to food security in Africa, with yield losses of 20–50%. Recent studies highlighted the importance of cereal crops ...

Here, we report the draft genome sequence of a phytoplasma discovered in grapevine. The genome size is 600,116 nucleotides (nt), with 597 predicted open reading frames. It is most similar to a maize bushy stunt phytoplasma ...

Bacillus thuringiensis (Bt) crops require a high dosage of Bt toxin to delay development of insect resistance, in particular, when the refuge strategy is applied. This strategy is threatened by plant developmental and ...

In August 2010, Aphidius ervi Haliday (Hymenoptera, Braconidae, Aphidiinae) was reared from a sample of the potato aphid, Macrosiphum euphorbiae (Thomas), which was collected in the field on Malva parviflora L. (Malvaceae) ...

Host plant species can affect the behavior and attributes of parasitoids, such as host searching, oviposition, and offspring Þtness. In this study, parasitism, host feeding, and sex ratios of Diglyphus isaea (Walker) ...

Nicotiana species (Solanaceae) are widely distributed, mainly in the Americas and Australia. Nicotiana africana is the only species indigenous to Africa; its populations are confined to isolated mountains in the Namib ...

Molecular species identification is becoming more wide-spread in diagnostics and ecological studies, particularly with regard to insects for which morphological identification is difficult or time-consuming. In this study, ...

Herbivory in some Nicotiana species is known to induce alkaloid production. This study examined herbivore-induced defenses in the nornicotine-rich African tobacco N. africana, the only Nicotiana species indigenous to ...