Effect of Chemical Ratios of a Microbial-Based Feeding Attractant on Trap Catch of Drosophila suzukii (Diptera: Drosophilidae)

Drosophila suzukii (Diptera, Drosophilidae) is an exotic species, endemic to Asia and currently a pest to small and stone fruits in several countries of North America and Europe. It was detected in 2013 for the first time in South America, in the south of Brazil. Unlike most drosophilids, this species deserves special attention, because the females are capable of oviposit inside healthy fruits, rendering their sale and export prohibited. Despite the confirmed existence of this species in different states of Brazil, this insect is yet been to be given the pest status. Nevertheless, the mere presence of this species is enough to cause concern to producers of small fruits and to justify further investigation for it’s control, especially chemical control for a possible change in status. Therefore, the goal of this work was to evaluate, in laboratory, mortality of D. suzukii adults and ovicidal effect when exposed to different insecticides registered for species of the Tephritidae and Agromyzidae families in different cultures. The insecticides deltamethrin, dimethoate, spinosad, fenitrothion, phosmet, malathion, methidathion, and zeta-cypermethrin resulted in mortality to 100 % of the subjects three days after the treatment (DAT). Regarding the effects over eggs, it was established that the insecticides fenitrothion, malathion, and methidathion deemed 100 % of the eggs not viable, followed by phosmet and diflubenzuron, which also caused elevated reduction in the eclosion of larvae two DAT.

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Molecular identification and primer design for spotted wing drosophila (Drosophila suzukii)

Research on Crops ◽

10.31830/2348-7542.2020.061 ◽

2020 ◽

Vol 21 (2) ◽

Keyword(s):

Molecular Identification ◽

Primer Design ◽

Spotted Wing Drosophila ◽

Drosophila Suzukii

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Impact of phagostimulants on effectiveness of OMRI‐listed insecticides used for control of spotted‐wing drosophila ( Drosophila suzukii Matsumura)

Journal of Applied Entomology ◽

10.1111/jen.12620 ◽

2019 ◽

Vol 143 (6) ◽

pp. 609-625 ◽

Cited By ~ 7

Author(s):

Craig R. Roubos ◽

Bal K. Gautam ◽

Philip D. Fanning ◽

Steven Van Timmeren ◽

Janine Spies ◽

...

Keyword(s):

Spotted Wing Drosophila ◽

Drosophila Suzukii

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Predation on Drosophila suzukii within Hedges in the Agricultural Landscape

Insects ◽

10.3390/insects12040305 ◽

2021 ◽

Vol 12 (4) ◽

pp. 305

Author(s):

Alexandra Siffert ◽

Fabian Cahenzli ◽

Patrik Kehrli ◽

Claudia Daniel ◽

Virginie Dekumbis ◽

...

Keyword(s):

Agricultural Landscape ◽

Vital Role ◽

Agricultural Landscapes ◽

Gut Content ◽

Drosophila Suzukii ◽

Natural Habitats ◽

Host Fruit ◽

Molecular Gut Content Analysis ◽

Wild Fruits ◽

Diverse Community

The invasive Drosophila suzukii feeds and reproduces on various cultivated and wild fruits and moves between agricultural and semi-natural habitats. Hedges in agricultural landscapes play a vital role in the population development of D. suzukii, but also harbor a diverse community of natural enemies. We investigated predation by repeatedly exposing cohorts of D. suzukii pupae between June and October in dry and humid hedges at five different locations in Switzerland. We sampled predator communities and analyzed their gut content for the presence of D. suzukii DNA based on the COI marker. On average, 44% of the exposed pupae were predated. Predation was higher in dry than humid hedges, but did not differ significantly between pupae exposed on the ground or on branches and among sampling periods. Earwigs, spiders, and ants were the dominant predators. Predator communities did not vary significantly between hedge types or sampling periods. DNA of D. suzukii was detected in 3.4% of the earwigs, 1.8% of the spiders, and in one predatory bug (1.6%). While the molecular gut content analysis detected only a small proportion of predators that had fed on D. suzukii, overall predation seemed sufficient to reduce D. suzukii populations, in particular in hedges that provide few host fruit resources.

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Streams and rural abandonment are related to the summer activity of the invasive pest Drosophila suzukii in protected European forests

Forest Ecology and Management ◽

10.1016/j.foreco.2021.118942 ◽

2021 ◽

Vol 485 ◽

pp. 118942

Author(s):

Alberto Maceda-Veiga ◽

Sergio Albacete ◽

Miguel Carles-Tolrá ◽

Juli Pujade-Villar ◽

Jan Máca ◽

...

Keyword(s):

Invasive Pest ◽

Drosophila Suzukii ◽

European Forests

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Identification and functional characterization of odorant-binding proteins 69a and 76a of Drosophila suzukii

Heliyon ◽

10.1016/j.heliyon.2021.e06427 ◽

2021 ◽

Vol 7 (3) ◽

pp. e06427

Author(s):

Haixia Zhan ◽

Du Li ◽

Youssef Dewer ◽

Changying Niu ◽

Fengqi Li ◽

...

Keyword(s):

Binding Proteins ◽

Functional Characterization ◽

Drosophila Suzukii ◽

Odorant Binding Proteins ◽

Odorant Binding

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Separate and combined Hanseniaspora uvarum and Metschnikowia pulcherrima metabolic volatiles are attractive to Drosophila suzukii in the laboratory and field

Scientific Reports ◽

10.1038/s41598-020-79691-3 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

R. Jones ◽

M. T. Fountain ◽

C. S. Günther ◽

P. E. Eady ◽

M. R. Goddard

Keyword(s):

Yeast Species ◽

Field Trapping ◽

Field Trials ◽

Economic Losses ◽

Drosophila Suzukii ◽

Control Efficacy ◽

Hanseniaspora Uvarum ◽

Metschnikowia Pulcherrima ◽

Rich Diversity ◽

Relative Attractiveness

AbstractDrosophila suzukii flies cause economic losses to fruit crops globally. Previous work shows various Drosophila species are attracted to volatile metabolites produced by individual fruit associated yeast isolates, but fruits naturally harbour a rich diversity of yeast species. Here, we report the relative attractiveness of D. suzukii to yeasts presented individually or in combinations using laboratory preference tests and field trapping data. Laboratory trials revealed four of 12 single yeast isolates were attractive to D. suzukii, of which Metschnikowia pulcherrima and Hanseniaspora uvarum were also attractive in field trials. Four out of 10 yeast combinations involving Candida zemplinina, Pichia pijperi, M. pulcherrima and H. uvarum were attractive in the laboratory. Whilst a combination of M. pulcherrima + H. uvarum trapped the greatest number of D. suzukii in the field, the efficacy of the M. pulcherrima + H. uvarum combination to trap D. suzukii was not significantly greater than traps primed with volatiles from only H. uvarum. While volatiles from isolates of M. pulcherrima and H. uvarum show promise as baits for D. suzukii, further research is needed to ascertain how and why flies are attracted to certain baits to optimise control efficacy.

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