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- W85926710 abstract "Plodia interpunctella (Hubner) is a major pest of raw and processed stored food products and thepurpose of this work was to design and determine whether an entomopathogen basedautodissemination approach would be an efficacious product for its control. A comparison of theretention, horizontal transmission and effect on mating of two electrostatic entomopathogendelivery powders (Entomag™ and Entostat™) was made to evaluate their potential as acomponent of an autodissemination method for the control of P. interpunctella. Both powderswere shown to have some effects on mating behaviour and ability of treated males to locate apheromone source when applied in high doses. However, no effects were observed at ratesconsistent with the amount of powder that was actually taken up when the moths visited aprototype bait station device. Male and females lost 69.9 and 64.3% by weight respectively ofEntomag by 48h after exposure but lost more Entostat, 89.8% and 75.9%, over the same period.Critical to the efficacy of autodissemination is the transfer of powder from males to females andon average a 49% greater weight of Entostat was transferred than Entomag. In addition to thisthe electrostatic charge on each powder was measured, with Entostat charging significantly more(to the negative polarity) than Entomag. The respective distances that a charged particle couldlevitate by virtue of electrostatic forces to an insect, were modelled, with Entostat predicted aslevitating over a greater distance to the moth than Entomag under scenarios where the insectwas either neutral or charged (neutral particle = 2.8 mm, compared to 1.9 mm; charged particle =21.7 mm, compared to 6.8 mm). A novel technique for determining powder uptake by P.interpuncetlla was developed based on image analysis. This determined the regions of themoth’s body to which particles were more likely to adhere. This study confirmed that pit-fall stylepowder dispensers were more effective at delivering powder to the head of the moth, wherepowder appeared to be most readily horizontally transferred between conspecifics. Finally, anindividual based modelling approach was taken to determine the overall suitability of Beauveriabassiana autodissemination as a controlling strategy for P. interpunctella. The model suggestedthat a maximum of only 62% of male moths would become contaminated with entomopathogenand that this would be insufficient to cause a decline in the overall population." @default.
- W85926710 created "2016-06-24" @default.
- W85926710 creator A5038108116 @default.
- W85926710 date "2008-07-01" @default.
- W85926710 modified "2023-09-27" @default.
- W85926710 title "Entomopathogen based autodissemination for the control of Plodia interpunctella (Hübner) : an examination of the critical components" @default.
- W85926710 hasPublicationYear "2008" @default.
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