Drosophila suzukii daily dispersal between distinctly different habitats

Tait, Gabriella; Cabianca, Alessandro; Grassi, A.; Pfab, Ferdinand; Oppedisano, Tiziana; Puppato, Simone; Mazzoni, Valerio; Anfora, G.; Walton, Vaughn M.

doi:10.1127/entomologia/2019/0876

Cited by 26 publications

(19 citation statements)

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“…This creates a temporal niche separation, with D. suzukii often first attacking fruits before other Drosophila species, and this, in part, also results in its higher pest status. Still, niche overlap does exist as both species occur concurrently and develop in many of the same crop and wild plant species (Kenis et al 2016;Lee et al 2015;Wang et al 2016;Santoiemma et al 2019;Tait et al 2020). Moreover, fruit infestation by D. suzukii could facilitate later infestation by D. melanogaster (Rombaut et al 2017;Shaw et al 2018) and D. suzukii can also develop on decaying fruit especially during periods when there is limited availability of more preferred ripening fruits (Bal et al 2017;Silva-Soares et al 2017;Santoiemma et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Host preference of three Asian larval parasitoids to closely related Drosophila species: implications for biological control of Drosophila suzukii

2020

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Insect parasitoids can attack phylogenetically related hosts that share similar physiological properties and defense mechanisms and, more importantly, overlapping ecological niches. Here, host preferences of three parasitoids, Asobara japonica (Hymenoptera: Braconidae), Ganaspis brasiliensis and Leptopilina japonica (Hymenoptera: Figitidae), were examined on two closely related hosts, Drosophila suzukii and D. melanogaster (Diptera: Drosophilidae). Each parasitoid's rate of successful parasitism (or offspring survival) on these hosts was first compared in no choice tests. Results showed that A. japonica had higher parasitism levels than G. brasiliensis and L. japonica, and that offspring survival for all parasitoids was similar on both host species. Host preferences in choice tests were then compared, with each parasitoid presented with the two host species at different proportions of host abundance. None of the parasitoids showed host preference or host switching, even though these parasitoids have different degrees of host specificity, from more generalized (A. japonica) to more specialized (G. brasiliensis). Further examination of parasitoid olfactory responses showed all three parasitoid species were attracted to volatiles from fruit infested by either host species and showed no preference to either D. suzukii or D. melanogaster. Results suggest that the hosts' phylogenetical similarity and a lack of any obvious fitness costs for offspring survival may reduce host preference by these larval parasitoids. Keywords Biological control • Host range • Host selection • Invasive species • Spotted-wing drosophila Key message • The preference for two hosts (Drosophila suzukii and D. melanogaster) was assessed for three parasitoids (Asobara japonica, Ganaspis brasiliensis and Leptopilina japonica) • The parasitoids did not display a preference between these closely related hosts, nor host switching • All parasitoid species were attracted to volatiles from fruit infested by either host and none of the parasitoids showed a preference to different hosts • The results provide new insights for classical biological control and potential apparent competition between closely related hosts

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Section: Introductionmentioning

confidence: 99%

Host preference of three Asian larval parasitoids to closely related Drosophila species: implications for biological control of Drosophila suzukii

2020

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“…The presence of VOCs in our mixture that are also commonly reported as typical fruit volatiles help to achieve this goal. We hypothesized that population control methods based on behavioral manipulation over a wide territorial scale, such as mass-trapping, attract-and-kill and push-pull, should be maximized near winter shelter areas, as well as in unmanaged environments flanking fruit production areas susceptible to D. suzukii infestations [ 10 , 68 ]. In addition, mass trapping methods targeting mainly gravid females and carried out before the beginning of the flowering and fruiting season have the potential to be extremely effective because of the lack of competition between natural sources and bait traps.…”

Section: Discussionmentioning

confidence: 99%

Liquid Baits with Oenococcus oeni Increase Captures of Drosophila suzukii

Ðurović

Alawamleh

Carlin

et al. 2021

Insects

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The spotted-wing drosophila (SWD), Drosophila suzukii Matsumura (Diptera: Drosophilidae), native to Eastern Asia, is an invasive alien species in Europe and the Americas, where it is a severe pest of horticultural crops, including soft fruits and wine grapes. The conventional approach to controlling infestations of SWD involves the use of insecticides, but the frequency of application for population management is undesirable. Consequently, alternative strategies are urgently needed. Effective and improved trapping is important as an early risk detection tool. This study aimed to improve Droskidrink® (DD), a commercially available attractant for SWD. We focused on the chemical and behavioral effects of adding the bacterium Oenococcus oeni (Garvie) to DD and used a new trap design to enhance the effects of attractive lures. We demonstrate that microbial volatile compounds produced by O. oeni are responsible for the increase in the attractiveness of the bait and could be later utilized for the development of a better trapping system. Our results showed that the attractiveness of DD was increased up to two-fold by the addition of commercially available O. oeni when combined with an innovative trap design. The new trap-bait combination increased the number of male and especially female catches at low population densities.

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“…The quantity that was caught during this time was also greater within the wooded area than what was caught within the blueberry field. This could be due to the density of individuals being greater within the wooded area at the beginning of the harvest season (Tait et al, 2019). Ohrn and Dreves (2011) reported that initial catches of SWD within the monitored field were low while traps in adjacent trees surrounding the field initially caught more and that overtime the trap catches within the monitored field grew as SWD moved in.…”

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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Drosophila suzukii daily dispersal between distinctly different habitats

Cited by 26 publications

References 0 publications

Host preference of three Asian larval parasitoids to closely related Drosophila species: implications for biological control of Drosophila suzukii

Host preference of three Asian larval parasitoids to closely related Drosophila species: implications for biological control of Drosophila suzukii

Liquid Baits with Oenococcus oeni Increase Captures of Drosophila suzukii

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

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