Adding yeasts with sugar to increase the number of effective insecticide classes to manage <i>Drosophila suzukii</i> (Matsumura) (Diptera: Drosophilidae) in cherry

Knight, A. L.; Basoalto, Esteban; Yee, Wee L.; Hilton, Richard; Kurtzman, Cletus P.

doi:10.1002/ps.4171

Cited by 30 publications

(50 citation statements)

References 46 publications

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“…The addition of sugar and Saccharomyces cerevisiae or the yeastlike fungus Aureobasidium pullulans enhanced the effect of two insecticides, spinosad and cyantraniliprole, on adult mortality and survival of eggs and larvae (Knight et al . ), and is in line with our findings. Interactions of the orchard microbiome with spray applications of yeasts, or other insecticide and fungicide sprays, should be the subject of future investigations.…”

Section: Discussionsupporting

confidence: 94%

“…; Knight et al . ). The addition of sugar and Saccharomyces cerevisiae or the yeastlike fungus Aureobasidium pullulans enhanced the effect of two insecticides, spinosad and cyantraniliprole, on adult mortality and survival of eggs and larvae (Knight et al .…”

Section: Discussionmentioning

confidence: 97%

“…Consequently, semiochemicals of microbial origin are emerging as promising tools for insect control, especially in combination with insect pathogens or insecticides in attract‐and‐kill formulations (Knight & Witzgall ; Knight, Basoalto & Witzgall ; Knight et al . ).…”

Section: Introductionmentioning

confidence: 97%

“…; Landolt, Adams & Rogg ; Iglesias, Nyoike & Liburd ; Knight et al . ). Notwithstanding, D. suzukii lays eggs in ripening fruit, preceding yeast colonization and fermentation.…”

Section: Introductionmentioning

confidence: 97%

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Enhanced yeast feeding following mating facilitates control of the invasive fruit pest Drosophila suzukii

Mori

Whitener

Leinweber

et al. 2016

Journal of Applied Ecology

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Summary The highly invasive spotted wing Drosophila Drosophila suzukii is a key pest of soft fruit and berries in Europe and North America, and development of control techniques is an urgent research challenge. Drosophila suzukii is widely associated with the yeast Hanseniaspora uvarum. Yeasts are symbionts of drosophilid flies and communicate with insects through volatile metabolites for spore dispersal. Accordingly, yeasts and behaviour‐modifying chemicals produced by yeasts are prospective tools for environmentally sound insect management. We first bioassayed flight attraction, feeding and oviposition of D. suzukii females in response to H. uvarum yeast and blueberries, which are a preferred host fruit. We then investigated the combined effect of yeast and insecticide on adult female oviposition behaviour and mortality towards the development of a yeast‐based control method. Following mating, attraction of female flies to blueberry and yeast odour cues was strongly enhanced. Yeast feeding significantly increased in mated females, while yeast did not increase oviposition on blueberries. This observation suggests that mated flies become attracted to yeast for feeding and to fruit for egg laying. A combined feeding–oviposition assay demonstrated different roles and interference between yeast and fruit stimuli: during the day after mating, females laid fewer eggs when yeast was available. The post‐mating yeast‐feeding response is an opportunity for the development of an attract‐and‐kill technique for population control of D. suzukii. Exposing flies to a blend of yeast and insecticide reduced oviposition and greatly enhanced adult fly mortality compared with an insecticide treatment alone. Synthesis and applications. Mated females are the key life stage for Drosophila suzukii population control. Egg‐laying females perforate fruit skin and fungal infestations ensue, even when eggs and larvae are killed off by insecticide sprays. Behaviour‐modifying chemicals, including yeast metabolites, enable environmentally safe insect management via manipulation of olfactory‐mediated reproductive behaviour. Our results highlight that yeast and yeast semiochemicals hold potential for D. suzukii management and that response modulation to olfactory stimuli following mating is a vital element for the development of D. suzukii control methods. Yeast feeding is enhanced in mated D. suzukii females, and this change in post‐mating behaviour can be exploited by an attract‐and‐kill strategy, combining a fly‐associated yeast with an insecticide. Furthermore, using the D. suzukii yeast mutualist, H. uvarum, may reduce non‐target effects and increase species specificity, which further contributes to the development of an efficient and safe control method.

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Section: Discussionsupporting

confidence: 94%

Section: Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 97%

“…; Landolt, Adams & Rogg ; Iglesias, Nyoike & Liburd ; Knight et al . ). Notwithstanding, D. suzukii lays eggs in ripening fruit, preceding yeast colonization and fermentation.…”

Section: Introductionmentioning

confidence: 97%

See 2 more Smart Citations

Enhanced yeast feeding following mating facilitates control of the invasive fruit pest Drosophila suzukii

Mori

Whitener

Leinweber

et al. 2016

Journal of Applied Ecology

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“…The inclusion of a sweetener as a phagostimulant, such as sucrose, has previously been shown to increase the uptake of insecticides (Cowles et al., ; Knight, Basoalto, Yee, Hilton, & Kurtzman, ); however, in the current study, no benefit of corn syrup was observed on the numbers of D. suzukii captured in traps or in the number of Drosophila larva in fruit. The reasons for the failure of the inclusion of phagostimulant to reduce infections by D. suzukii in this study are unknown; however, the effect of environmental factors such as humidity or the availability of alternative food resources in untreated plots or adjacent to treated plots was not empirically quantified but may result in the reduced efficacy of corn syrup observed in this instance.…”

Section: Discussioncontrasting

confidence: 68%

Efficacy of biopesticides on spotted wing drosophila, Drosophila suzukii Matsumura in fall red raspberries

Fanning

Grieshop

Isaacs

2017

J Applied Entomology

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Drosophila suzukii Matsumura is a significant pest of soft-skinned fruit. Larvae of D. suzukii develop within the fruit making it unmarketable as fresh berries and increasing the risk of rejection by processors. We evaluated selected biopesticides for control of D. suzukii in fall red raspberries, Rubus idaeus L. The trial results highlight a small number of biopesticides with the potential to reduce infestation of Drosophila larvae in raspberries. In addition to the standard biopesticide spinosad, we found that sabadilla alkaloids and Chromobacterium subtsugae both reduced the number of Drosophila larvae in raspberry fruit. Treatments that included corn syrup as a feeding stimulant showed no significant difference in their infestation levels compared to treatments without the syrup. In the final week of the 5-week trial, treatments with rotations of either spinosad/C. subtsugae or spinosad/sabadilla alkaloids had a 67% and 57% reduction in infestation when compared to untreated raspberries. Treatments of spinosad alone on a 7 day rotation and C. subtsugae alone on a 3-5 day rotation both had a 62% and 61% reduction in larval infestation when compared to untreated raspberries.Third instar larvae, the largest and most damaging, were significantly reduced in plots treated with spinosad only, a rotation of spinosad/sabadilla alkaloids and the rotation of spinosad/C. subtsugae with corn syrup added when compared to untreated plots.This suggests that either of these biopesticides could be used as effective rotation partners along with spinosad for control of D. suzukii. Our results highlight that biopesticides can provide significant reduction in this devastating pest when used alone or in combination, providing options to support resistance management. K E Y W O R D Sbiopesticides, Chromobacterium subtsugae, pest management, Rubus idaeus, sabadilla alkaloids, spinosad

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Identification of natural pathogens from wild Drosophila suzukii

Bing

Winkler

Gerlach

et al. 2021

Pest Management Science

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BACKGROUND Drosophila suzukii (Matsumura, 1931) (spotted wing drosophila), an invasive species, has recently become a significant global pest of soft‐skinned fruits such as berries. Unlike other Drosophila species, female D. suzukii have evolved a specialized sharp, serrated ovipositor that pierces and penetrates ripe and ripening fruits, causing them to lose commercial value and preventing their sale. A first step for the development of biological control agents for pest management may be achieved through the identification of microbes infectious for D. suzukii in the wild. RESULTS We first determined that D. suzukii is susceptible to chemicals commonly used to rear Drosophilids in the laboratory and established a diet able to sustain healthy D. suzukii growth. Using this diet, we demonstrated that of 25 species of culturable bacteria and fungi isolated from field‐collected D. suzukii, eight microbes decreased host survival when injected. Three of the eight bacteria (Alcaligenes faecalis, Achromobacter spanius and Serratia marcescens) were acutely pathogenic to both D. suzukii and Drosophila melanogaster adults by injection. Feeding of these bacteria resulted in susceptibility only in larvae. CONCLUSION We successfully identified multiple microbes from field‐collected D. suzukii that are pathogenic to both larvae and adults through different routes of infection, some of which could be candidates for biocontrol of this species. © 2020 Society of Chemical Industry

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Adding yeasts with sugar to increase the number of effective insecticide classes to manage Drosophila suzukii (Matsumura) (Diptera: Drosophilidae) in cherry

Cited by 30 publications

References 46 publications

Enhanced yeast feeding following mating facilitates control of the invasive fruit pest Drosophila suzukii

Enhanced yeast feeding following mating facilitates control of the invasive fruit pest Drosophila suzukii

Efficacy of biopesticides on spotted wing drosophila, Drosophila suzukii Matsumura in fall red raspberries

Identification of natural pathogens from wild Drosophila suzukii

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