Development of semiochemical attractants for monitoring bean seed beetle, Bruchus rufimanus

Abstract

The blends of semiochemicals identified were shown to be attractive in cone traps under field conditions. The prototype trapping system developed could be used as a monitoring tool to determine infestation levels of B. rufimanus in bean fields.

Fumigant Activity of 6 Selected Essential Oil Compounds and Combined Effect of Methyl Salicylate AndTrans-Cinnamaldehyde AgainstCulex pipiens pallens

“…< 0.05). Interestingly, odorant 8 exhibited a re- (Bruce et al 2011). However, it is interesting that food combined with odorant 8 significantly reduced food consumption in Tribolium castaneum Herbst (Coleoptera: Tenebrionidae) larvae and had obvious antifeedant activity at concentrations of 27.2 and 54.4 mg/g of food (Huang & Ho 1998), similar to our results.…”

“…Three HIPVs of other plant species were also selected: indole (odorant 4), di-noctyl phthalate (odorant 5), and dimethyl naphthalene (odorant 6). In addition, 4 bio-functional odorants were selected, namely, benzyl alcohol (odorant 7) (Hibbard et al 1997), cinnamaldehyde (odorant 8), 1-undecene (odorant 9) (Bruce et al 2011), and anethol (odorant 10) (Hansson et al 1999). Furthermore, methanol (odorant 11) and phenol (odorant 12) were tested because of their pungent odors, and odorant 3's analogue ethyl salicylate (odorant 13) was likewise tested.…”

“…In addition, 4 bio-functional odorants were selected, all of which elicited significant electroantennogram (EAG) responses in other Coleoptera species but had not been tested in A. quadriimpressum. These included benzyl alcohol, predicted to be responsible for the host switch from Cucurbitaceae to Poaceae in Diabrotica virgifera LeConte (Coleoptera: Chrysomelidae) (Hibbard et al 1997), 1-undecene, suggested to be a male sex pheromone component, and cinnamaldehyde, which attracted both male and female adults of Bruchus rufimanus Boheman (Coleoptera: Chrysomelidae) (Bruce et al 2011). Anethol, the 4th odorant, showed clear olfactory neural activation and attraction in some scarab beetles (Hansson et al 1999).…”

Effects of faba bean (Vicia faba) varieties on the development of Bruchus rufimanus

“…However, egg monitoring on pods is complicated and very time-consuming for farmers, so the spray timing is often incorrect and the control is generally poor (Ward & Smart 2011). Moreover, even if the spray timing is correct, the effects of commonly available insecticides (pyrethroids, neonicotinoids) are often unsatisfactory (Matłosz & Kaniuczak 1997;Bruce et al 2011;Seidenglanz et al 2011). Problems with controlling this insect pest imply lost opportunities for growers in lucrative markets for doi: 10.17221/122/2015-CJGPB seed stock production and human consumption (the latter is not the case for CZ growers) due to crop rejection on standards of quality.…”

“…Because levels of seed infestation have ranged between 1% and 50% during the last decade (2000)(2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008)(2009)(2010) in Central and Western Europe, and as this can vary in individual seasons, an effective approach to a control system consisting of more than just one operation is essential for growers to expand their use of beans as a valuable break crop in both organic and conventional arable farming systems. Bruce et al (2011) aimed to develop a semiochemical-based monitoring system as part of an Integrated Pest Management (IPM) strategy. A monitoring system supported by better knowledge of the pest biology would allow more effective control with insecticides and would provide a reliable risk indicator for determining the need or optimum timing of sprays, reducing multiple applications and risk of resistance.…”