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opencc-zeroJul 2021View details →

Physiological data and R script for running physiology combined model for Drosophila suzukii

This is the dataset that accompanies an article entitled "The use of insect life tables in optimizing invasive pest distributional models" that would be published in Ecography. The dataset include two R script that used to generate physical model and the physiology combined model respectively. Our paper shows that the physiology combined model show good performance when applying ecological niche model in risk assessment. We addressed this by determining whether incorporating physiological data from life table analyses of an invasive insect, Drosophila suzukii, improved predictions of ecological niche models. The dataset also include the physiology data D. suzukii that we assembled for running our physiology combined model.

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Drosophila suzukii population dynamics and control efficiency of mineral dusts with a focus on grape protection

The invasive pest Drosophila suzukii is threatening berry production. It is mainly managed via chemical control, which is associated with consumer and environmental concerns. Here, we tested the efficiency of mineral dusts under field and laboratory conditions. Furthermore, population dynamics were studied in a vineyard and its surroundings. The kaolin products Cutisan and Surround®, as well as the CaCO3 product Carboliq had neither insecticidal nor repellent effects on Drosophila suzukii adults in laboratory choice tests with grapes at concentrations of up to 2% (w/v). Cutisan and Surround® significantly reduced the number of deposited eggs (-41.9% and -49.3%, respectively) while Carboliq had no effect on the oviposition under laboratory conditions. The Surround® treatment significantly reduced the number of flies trapped on 09/09/2020 at a test vineyard. Depending on the assessment date and treatment, between 59 and 84% of the flies in the bait traps were females. The number of eggs found in fruit treated with Carboliq in the field was higher at each assessment date than in the control but this difference was not statistically significant. Cutisan and Surround® applications in the field showed an equivalent or lower average number of eggs compared to the control but this difference was only significant on 24/09/2020. The highest number of D. suzukii adults was observed around September in the field and a decline of the population occurred in the winter months until July. In epidemic years, temperature - humidity - combinations prior to population peaks were quite stable with low humidity being associated with a high temperature and vice-versa. In non-epidemic years, humidity fluctuated more than in epidemic years and temperatures were lower before population peaks. The effect of global radiation on population maxima seemed to be minor.

opencc-by-4.0Sep 2021View details →

publicNov 2023View details →

Thesis: Transcriptome analysis of insecticide resistant Drosophila suzukii

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publicJul 2021View details →

Physiological data and R script for running physiology combined model for Drosophila suzukii

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publicOct 2018View details →

Data from: Species distribution models of the Spotted Wing Drosophila (Drosophila suzukii, Diptera: Drosophilidae) in its native and invasive range reveal an ecological niche shift

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opencc-zeroDec 2017View details →

Data from: Ovary development and cold tolerance of the invasive pest Drosophila suzukii (Matsumura) in the central plains of Kansas, United States

Environmental challenges presented by temperature variation can be overcome through phenotypic plasticity in small invasive ectotherms. We tested the effect of thermal exposure to 21, 18, and 11°C throughout the whole life cycle of individuals, thermal exposure of adults reared at 25°C to 15 and 11°C for a 21-d period, and long (14:10 hr) and short (10:14 hr) photoperiod on ovary size and development in Drosophila suzukii (Matsumura) (Diptera: Drosophilidae) cultured from a recently established population in Topeka, Kansas (United States). Examination of the response to temperature and photoperiod variation in this central plains population provides insight into the role of phenotypic plasticity in a climate that is warmer than regions in North America where D. suzukii was initially established. We found both low temperature and short photoperiod resulted in reduced ovary size and level of development. In particular, reduced ovary development was observed following exposure to 15°C, indicating that ovary development in females from the central plains population is more sensitive to lower temperature compared with populations examined from the northern United States and southern Canada. We also provide evidence that D. suzukii reared at 25°C are capable of short-term hardening when exposed to −6°C following 4°C acclimation, contrary to previous reports indicating flies reared at warm temperatures do not rapidly-cold harden. Our study highlights the central role of phenotypic plasticity in response to winter-like laboratory conditions and provides an important geographic comparison to previously published assessments of ovary development and short-term hardening survival response for D. suzukii collected in cooler climates.

opencc-zeroNov 2023View details →

Transcriptome analysis of Drosophila suzukii reveals molecular mechanisms conferring pyrethroid and spinosad resistance

Drosophila suzukii possess a serrated ovipositor that enables them to lay eggs in soft-skinned, ripening fruits, making this insect a serious threat to berry production. Since its 2008 introduction into North America, growers have used insecticides as the primary approach for D. suzukii management, resulting in detections of insecticide resistance in this pest. This study sought to identify the molecular mechanisms conferring insecticide resistance in these resistant populations. We sequenced the transcriptomes of two pyrethroid- and two spinosad-resistant isogenic lines. In both pyrethroid-resistant lines and one spinosad-resistant line, we identified overexpression of metabolic genes that are implicated in resistance in other insect pests. In the other spinosad-resistant line, we observed an overexpression of cuticular genes that have been linked to resistance. Our findings enabled the development of molecular diagnostics that we used to confirm persistence of insecticide resistance in California. To validate these findings, we leveraged D. melanogaster mutants deficient in either metabolic or cuticular genes that were upregulated in resistant D. suzukii to demonstrate that these genes are involved in promoting resistance. This study is the first to characterize the molecular mechanisms of insecticide resistance in D. suzukii and provides insights into how current management practices can be optimized.

opencc-by-4.0Apr 2021View details →

DNA Metabarcoding Enables High-Throughput Detection of Spotted Wing Drosophila (Drosophila suzukii) within Unsorted Trap Catches

Data to support the paper: DNA Metabarcoding Enables High-Throughput Detection of Spotted Wing Drosophila (Drosophila suzukii) within Unsorted Trap Catches

opencc-zeroDec 2021View details →

Impact of modified caneberry trellis systems on microclimate and habitat suitability for Drosophila suzukii

Caneberries are trellised to facilitate harvest and agrochemical applications as well as to improve crop yield and quality. Trellising can also increase airflow and light penetration within the canopy and affect its microclimate. We compared an experimental trellis that split the canopy into halves to standard I- and V-trellises, measuring Drosophila suzukii (Matsumura) fruit infestation as well as canopy temperature and relative humidity in raspberries at two commercial you-pick diversified farms. To evaluate the combined effects of trellising systems and pruning, we pruned one half of each row in blackberry plantings at two research farms and assessed D. suzukii infestation, canopy microclimate (temperature, relative humidity, and light intensity), fruit quality parameters (interior temperature, total soluble solids, and penetration force), and spray coverage/deposition. Trellis installation costs, labor inputs, and yield were used to further evaluate the trellis systems from an economic perspective. Fruit quality was not affected by trellising or pruning and lower total yield was observed in the experimental trellis treatment on one farm. Although D. suzukii infestation was only affected by trellising and pruning at one site, we observed a relationship between higher temperatures and reduced infestation on nearly all farms. Occasionally, lower relative humidity and high light intensity corresponded with lower infestation. Ultimately, the experimental trellis was less economically efficient than other trellising systems and our ability to successfully manipulate habitat favorability varied in a site-specific manner. Drosophila suzukii management approaches that rely upon unfavorable conditions are likely to be more effective in hot, dry regions.

opencc-by-4.0May 2024View details →

An advanced metabolomic approach untangles oviposition preference of grape skin by Drosophila suzukii

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opencc-by-4.0Jul 2013View details →

Fig. 1 in Primera cita de Drosophila suzukii (Matsumura 1931) (Diptera: Drosophilidae) en Galicia (NO de la Península Ibérica).

Fig. 1.- Vista lateral del macho de Drosophila suzukii y detalles característicos resaltados.

opencc-by-4.0Jun 2019View details →

Fig. 2 in Comparison of attractants, insecticides, and mass trapping for managing Drosophila suzukii (Diptera: Drosophilidae) in blueberries

Fig. 2. Commercially available trap from RIGA® AG used in mass trapping.

opencc-by-4.0Jul 2024View details →

Transmission of yeast and bacterial symbionts between sexual partners in Drosophila suzukii and Drosophila melanogaster

Data from "Transmission of yeast and bacterial symbionts between sexual partners in Drosophila suzukii and Drosophila melanogaster"

opencc-zeroOct 2021View details →

Abundance of Drosophila suzukii in the agricultural landscape

We sampled the abundance of males and females in the agricultural landscape in Slovenia. We selected 10 locations in the central part of Slovenia, five of which were closer than 200 m from the forest edge and five of which were more than 200 m from the forest edge. We collected SWD adults in three habitat types per location from the end of June until the end of October 2020. Also the actual distance is taken into account. We have two datasets in which the abundance is pooled for the whole period and one in which the sampling period is every two weeks. In the analysis of the article the number of SWD were standardized to number of SWD per 14 days.

opencc-zeroDec 2022View details →

Assessing potential hybridization between a hypothetical gene drive-modified Drosophila suzukii and non-target Drosophila species

Genetically engineered gene drives (geGD) are potentially powerful tools for suppressing or even eradicating populations of pest insects. Before living geGD insects can be released into the environment, they must pass an environmental risk assessment (ERA) to ensure that their release will not harm valued and protected entities of the environment. A key research question concerns the likelihood that non-target species will acquire the functional GD elements; such acquisition could lead to the loss of those species and to a disruption of the ecosystem services they provide. The main route for gene flow is through hybridization between the GD insect strain and closely related species that co-occur in the area of release. Using the invasive spotted-wing drosophila, Drosophila suzukii, as a case study, we demonstrate how a combination of interspecific hybridization experiments, behavioral observations, and molecular genetic analyses can be used to assess the potential for hybridization.

opencc-zeroSep 2023View details →

High promiscuity among females of the invasive pest species Drosophila suzukii

Drosophila suzukii (Matsumura, 1931), the spotted-wing drosophila, is a highly invasive fruit fly that spread from Southern Asia across most regions of Asia, and in the last fifteen years has invaded Europe and the Americas. It is an economically important pest of small fruits such as berries and stone fruits. Drosophila suzukii speciated by adapting to cooler, mountainous and forest environments. In temperate regions, it evolved seasonal polyphenism traits which enhanced its survival during stressful winter population bottlenecks. Consequently, in these temperate regions, the populations undergo seasonal reproductive dynamics. Despite its economic importance, no data are available on the behavioural reproductive strategies of this fly. The presence of polyandry, for example, has not been determined despite the important role it might play in the reproductive dynamics of the populations. We explored the presence of polyandry in an established population in Trentino, a region in North Italy. In this area, D. suzukii overcomes the winter bottleneck and undergoes a seasonal reproductive fluctuation. We observed a high remating frequency in females during the late spring demographic explosion that led to the abundant summer population. The presence of a high degree of polyandry and shared paternity associated with the post-winter population increase raises the question of the possible evolutionary adaptive role of this reproductive behaviour in D. suzukii.

publicNov 2024View details →

Asymmetric oviposition behaviour between Drosophila suzukii and D. subpulchrella suggests competition for the shared niche in their native range

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publicFeb 2024View details →

Impact of modified caneberry trellis systems on microclimate and habitat suitability for Drosophila suzukii

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publicOct 2025View details →

Resistance assays of Drosophila suzukii populations from seven locations in Michigan and one location in Oregon

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