Dietary yeast affects preference and performance in .

Yeasts play an important role in nutrition physiology and host attraction of many species, and associations with various yeast species are documented for several drosophilid flies. The pest (Matsumura) has a predominant association with the yeast However, research has not been conducted on the nutritional physiology of the yeasts associated with (spotted wing drosophila). Therefore, in this study, we determined whether dietary yeast was nutritionally relevant and whether yeast species closely associated with positively affected life-history traits.

Continuous exposure to the deterrents -jasmone and methyl jasmonate does not alter the behavioural responses of .

Behavioural responses of (Pergande) (Thysanoptera: Thripidae), a generalist, cell sap-feeding insect species with piercing-sucking mouthparts, after continuous exposure to two deterrent secondary plant compounds are investigated. We compared in choice assays on bean leaf discs, the settling, feeding, and oviposition preferences of females that had no experience with the two fatty acid derivatives methyl jasmonate and -jasmone before testing (naïve thrips) vs. females that had been exposed to the deterrent compounds before testing (experienced thrips).

Habituation in to deterrent plant compounds and their blends.

Feeding and oviposition deterrence of three secondary plant compounds and their 1:1 blends to adult female Pergande (Thysanoptera: Thripidae) and the potential for habituation of the thrips to the pure compounds and the 1:1 blends at various concentrations were investigated. In choice assays, we tested dose-dependent feeding and oviposition deterrence of the two fatty acid derivatives methyl jasmonate and -jasmone, the phenylpropanoid allylanisole, and their blends when directly applied to bean leaf discs. The concentration required to reduce the feeding damage by 50% relative to the control treatment (FDC) was lowest for -jasmone and highest for allylanisole.