Evaluating the Pheromone Release Rate Characteristics of Commercial Mating Disruption Devices

Hebert, Vincent R.; Tomaszewska, Elizabeth; Brunner, Jay F.; Jones, Vincent P.; Doerr, Mike

doi:10.1021/bk-2007-0947.ch010

Cited by 2 publications

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“…The results from the field air collections and quantifications showed differences between the two systems tested for the mating disruption of EGVM. In the case of the passive dispensers, lower mean quantities of airborne pheromone were detected at the beginning of the crop cycle, whereas the concentration reached a maximum in the middle of the cycle during summer, which, among other factors explained below, highlights the dependency on temperature of their release kinetics [44] as can be seen in their emission rates. Similar results were obtained in relative data by Karg et al [31] in which significant differences were found between EAG measurements done in spring and summer, showing lower EAG signals in the spring studies.…”

Section: Discussionmentioning

confidence: 88%

Airborne Pheromone Quantification in Treated Vineyards with Different Mating Disruption Dispensers against Lobesia botrana

Gavara

Vacas

Navarro³

et al. 2020

Insects

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Mating disruption (MD) is widely used against the European grapevine moth (EGVM), Lobesia botrana (Denis and Schiffermüller; Lepidoptera: Tortricidae), by installing passive dispensers or aerosol devices. The present work reports a new sampling and quantification methodology to obtain absolute data about field airborne pheromone concentration based on air samplings and sensitive chromatographic-spectroscopic methods. Samplings were performed in fields treated with passive dispensers or aerosol devices at different moments throughout the crop cycle to study how they act and how the disruption is triggered. Moreover, pheromone adsorption and releasing capacity of vine leaves were studied to elucidate their role in the disruption. Although both types of dispensers were effective in limiting the damage inflicted by EGVM, they performed differently and provided different airborne pheromone concentration profiles. Results also proved that leaves were able to adsorb and release part of the airborne pheromone acting as subsequent and additional pheromone sources. This fact could explain the different concentration profiles. Moreover, our results suggest that lower pheromone emission than that of the current passive dispensers still could provide an adequate performance in the field. Competitive mechanisms involved in MD using both dispensers, the dynamics of the airborne pheromone throughout the time and the importance of the canopy are discussed.

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Section: Discussionmentioning

confidence: 88%

Airborne Pheromone Quantification in Treated Vineyards with Different Mating Disruption Dispensers against Lobesia botrana

Gavara

Vacas

Navarro³

et al. 2020

Insects

View full text Add to dashboard Cite

show abstract

“…Although some commercial dispensers, that can release volatile chemicals with constant rates have been developed (McDonough et al, 1992;Cross et al, 2006;Hebert et al, 2007;Evenden and Gries, 2010), the most common semiochemical release devices used by researchers, e.g., rubber septa (Zhang et al, 2013), laminates flakes (Kehat et al, 1983), microcapsules (Light and Beck, 2010), polyethylene vials (Zhang et al, 2008), PVCresins (Cork et al, 2008), sepiolite-based tablets (Femenia-Ferrer et al, 2007), wax-base granules (Behle et al, 2008), and plastic ropes (Mayer and Mitchell, 1998), are first-order matrices that release with an initial burst and then decline gradually over time. Dispensers with zero-order kinetics are perceived to be beneficial in many situations but are more difficult to achieve in the laboratory.…”

Section: Discussionmentioning

confidence: 99%

Controlled-Release Dispenser and Dry Trap Developments for Drosophila suzukii Detection

et al. 2020

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The spotted wing drosophila (SWD), Drosophila suzukii, is an exotic vinegar fly originating from SouthEast Asia and has invaded many American and European countries. This devastating pest has caused severe damage on soft-skinned fruit crops, which has resulted in large economic losses. Although many D. suzukii detection devices have been developed and used by growers/farmers in orchards, most of them did not meet their expectation. More simple, convenient, and efficient detection tools are still urgently needed so that growers/farmers can make timely management decision. In our previous study a quinary blend, containing acetoin, as a long-range, and ethyl octanoate, as a short-range attractant for SWD, had been identified. In this study, a controlled-release polyethylene dispenser containing five identified attractants: acetoin, ethyl octanoate, ethyl acetate, phenethyl alcohol, and acetic acid, was tested in laboratory conditions for release rates, as well as in a blueberry field and an adjacent wooded area for trapping activity. Release of the most D. suzukii attractants from the polyethylene dispenser was constant. In the laboratory, release rates of ethyl acetate (0.3 g/day over 14 days), phenethyl alcohol (0.0054 g/day over 36 days), and acetic acid (0.13 g/day over 36 days) followed zero order kinetics. Acetoin and ethyl octanoate were blended together and had a varied release rate. In the field, dry and liquid traps baited with the optimized controlled-release dispenser were evaluated and compared with liquid traps baited with apple cider vinegar (ACV). During blueberry harvest season in 2018, the liquid traps containing drowning solution baited with the optimized controlledrelease dispenser caught both male and female D. suzukii 2 weeks earlier and had significantly higher selectivity than that of ACV traps in the field. Additionally, in 2019 field tests, dry traps baited with the controlled-release dispenser demonstrated earlier detection compared to the ACV traps. Due to the simplicity of the dry trap design and easy processing, it has great potential to be an efficient and convenient D. suzukii detection tool for growers/farmers.

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Evaluating the Pheromone Release Rate Characteristics of Commercial Mating Disruption Devices

Cited by 2 publications

References 0 publications

Airborne Pheromone Quantification in Treated Vineyards with Different Mating Disruption Dispensers against Lobesia botrana

Airborne Pheromone Quantification in Treated Vineyards with Different Mating Disruption Dispensers against Lobesia botrana

Controlled-Release Dispenser and Dry Trap Developments for Drosophila suzukii Detection

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