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92 results for “Drosophila suzukii”
Seasonal monitoring of Drosophila suzukii and its non-crop hosts in Wuhu, Eastern China
<p><i>Drosophila</i><i> suzukii</i> (Matsumura) (Diptera: Drosophilidae) is a serious pest that prefers fresh fruits native to Southeast Asia. In our study apple cider vinegar bait traps were used to capture and monitor the population dynamics of this native pest in Wuhu City, China, from May/June, 2017 to May, 2018. The research was conducted at 15 locations in two fruit orchards in Wuhu. Traps caught more adults in general in Meiling blueberry orchard than in Xicun mixed orchard, and the highest trap counts occurred near harvest time (October). Females had more mature eggs from September to November and the number of mature eggs declined thereafter. We found several non-crop hosts of this pest, which can provide food and reproductive resources for <i>D. suzukii</i>, are common in forests and field margins. By comparing the number of captured adults in the Meiling and Xicun orchards, we found that blueberry was preferred by <i>D. suzukii </i>among the fruits in our search. Fruit ripening time differed among crops and therefore fly populations moved between crop and non-crop habitats during the year or had varying population dynamics on different crops in different seasons. The <i>D. suzukii</i> population and the number of mature eggs decreased in summer and winter but increased in spring and autumn. <i>Drosophila suzukii</i> had higher survival rates on blueberry than other fruits and <i>D. suzukii </i>could use four non-crop species growing around the orchards as host plants.</p>
Drosophila suzukii sampling in grapes
<p>Raw data on the percentage of grape berries infested by <em>Drosophila suzukii</em> within Swiss vineyards in respect of site of oviposition<em> </em>in 2017 as well as egg sampling method comparison in 2018 and 2019. </p>
Compatibility of powdered sulphur and natural enemies for the control of Drosophila suzukii (Diptera: Drosophilidae): effects on Anthocoris nemoralis (Hemiptera: Anthocoridae) and Trichopria drosophilae (Hymenoptera: Diapriidae) activity
<p>Data set form the research "<strong>Compatibility of powdered sulphur and natural enemies for the control of <em>Drosophila suzukii </em>(Diptera: Drosophilidae): effects on <em>Anthocoris nemoralis</em> (Hemiptera: Anthocoridae) and <em>Trichopria drosophilae</em> (Hymenoptera: Diapriidae) activity".</strong></p>
Population structure of Drosophila suzukii and signals of multiple invasions in the continental United States
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Data from: Wolbachia do not live by reproductive manipulation alone: infection polymorphism in Drosophila suzukii and D. subpulchrella
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Data from: Invasive Drosophila suzukii facilitates Drosophila melanogaster infestation and sour rot outbreaks in the vineyards
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Data from: Local and landscape-scale heterogeneity shape spotted wing drosophila (Drosophila suzukii) activity and natural enemy abundance: implications for trophic interactions
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Artificial selection for non‐reproductive host killing in a native parasitoid on the invasive pest, Drosophila suzukii
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Nutritional developmental history and its consequences for reproductive success in Drosophila suzukii (Diptera: Drosophilidae)
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Data from: Recording and reproducing the diurnal oviposition rhythms of wild populations of the soft- and stone- fruit pest Drosophila suzukii
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Seasonal monitoring of Drosophila suzukii and its non-crop hosts in Wuhu, Eastern China
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Figures 2-7 from: Abram PK, McPherson AE, Kula R, Hueppelsheuser T, Thiessen J, Perlman SJ, Curtis CI, Fraser JL, Tam J, Carrillo J, Gates M, Scheffer S, Lewis M, Buffington M (2020) New records of Leptopilina, Ganaspis, and Asobara species associated with Drosophila suzukii in North America, including detections of L. japonica and G. brasiliensis. Journal of Hymenoptera Research 78: 1-17. https://doi.org/10.3897/jhr.78.55026
Figures 2-7 Ganaspis brasiliensis (2, 4); Leptopilina japonica (3, 5); Pachycrepoideus vindemmiae (6); Asobara sp. (7).
Figure 1 from: Abram PK, McPherson AE, Kula R, Hueppelsheuser T, Thiessen J, Perlman SJ, Curtis CI, Fraser JL, Tam J, Carrillo J, Gates M, Scheffer S, Lewis M, Buffington M (2020) New records of Leptopilina, Ganaspis, and Asobara species associated with Drosophila suzukii in North America, including detections of L. japonica and G. brasiliensis. Journal of Hymenoptera Research 78: 1-17. https://doi.org/10.3897/jhr.78.55026
Figure 1 Map of sites where Leptopilina japonica (red circles), or both L. japonica and Ganaspis brasiliensis (green circles) were found in British Columbia, Canada in 2016 and 2019. The red box in the inset shows where the mapped area is situated in North America. Map tiles by Stamen Design, under CC BY 3.0. Data by OpenStreetMap, under ODbL.
Data from: Enhanced yeast feeding following mating facilitates control of the invasive fruit pest Drosophila suzukii
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.
Color preference of the spotted wing Drosophila, Drosophila suzukii
<p class="MsoNoSpacing"><i>Drosophila suzukii</i> Matsumura (Diptera: Drosophilidae) is a significant invasive pest in soft-skin fruits and berries in Asia, Europe, and North and South America. Many herbivorous insects use multiple cues for host selection, particularly olfactory and visual stimuli. The visual system of closely-related <i>Drosophila melanogaster</i> is well-documented, expressing strong sensitivity to short-wavelength colors (ultraviolet to green) and only limited sensitivity to long-wavelength colors (red to infrared). <a name="_Hlk14941109">Our results suggest that <i>D. suzukii</i> have limited ability to distinguish red consistent with visual sensitivity range within the melanogaster subgroup. </a>We propose that color contrast rather than color appearance may be of greater importance in orientation and attraction. We propose that differences in reflectance between light wavelengths important for color opponency are key to color discrimination to provide color contrast between foreground and background, as occurs between fruit and foliage, during host-finding.</p>
Data from: Metagenomic analysis reveals changes of the Drosophila suzukii microbiota in the newly colonised regions
The spotted wing drosophila, Drosophila suzukii (Matsumura) (Diptera: Drosophilidae) is a highly polyphagous pest of a wide variety of wild or cultivated berry and stone fruit. Originating from Southeast Asia, it has recently invaded a wide range of regions in Europe and North-America. It is well known that insect microbiotas may significantly influence several aspects of the host biology and play an important role in invasive species introduction into new areas. However, in spite of the great economic importance of D. suzukii, a limited attention has been given so far to its microbiota. In this study, we present the first in-depth characterization of gut bacterial diversity from field (native and invasive range) and lab-reared populations of this insect. The gut bacterial communities of field insects were dominated, regardless of their origin, by two families of the phylum Proteobacteria: Acetobacteraceae and Enterobacteriaceae, while Firmicutes, mainly represented by the family Staphylococcaceae, prevailed in lab-reared population. Locality was the most significant factor in shaping the microbiota of wild flies. Moreover, a negative correlation between diversity and abundance of Enterobacteriaceae and the time elapsed since the establishment of D. suzukii in a new region was observed. Altogether our results indicate that habitat, food resources as well as the colonization phase of a new region contribute to shape the bacterial communities of the invasive species which, in turn, by evolving more quickly, could influence host adaptation in a new environment.
Data from: Nutritional geometry and fitness consequences in Drosophila suzukii, the Spotted-Wing Drosophila
Since its arrival to North America less than a decade ago, the invasive Spotted-Wing Drosophila (Drosophila suzukii) has inflicted substantial economic losses on soft fruit agriculture due to its ability to oviposit into ripening fruits. More effective management approaches for this species are needed, but little is known about the factors that influence behavioral choices made by D. suzukii when selecting hosts, or the consequences that their offspring experience when developing in different environments. Using a nutritional geometry methodology, we found that the ratio of proteins-to-carbohydrates (P:C) present in media greatly influenced adult D. suzukii behavior and subsequent offspring development. Whereas adult flies showed a strong bias in their oviposition and association behaviors toward carbohydrate-rich foods, larval survival and eclosion rate were strongly dependent on protein availability. Here, we explore the preference–performance hypothesis (PPH), in which females are predicted to oviposit on medias that provide the greatest offspring benefits, in regard to its relevance in D. suzukii behavior and consequences for management. Our results provide valuable insight into the ecology and evolution of this species that may hopefully lead to more effective management strategies.
Data from: The making of a pest: insights from the evolution of chemosensory receptor families in a pestiferous and invasive fly, Drosophila suzukii
Background: Drosophila suzukii differs from other melanogaster group members in their proclivity for laying eggs in fresh fruit rather than in fermenting fruits. Olfaction and gustation play a critical role during insect niche formation, and these senses are largely mediated by two important receptor families: olfactory and gustatory receptors (Ors and Grs). Earlier work from our laboratory has revealed how the olfactory landscape of D. suzukii is dominated by volatiles derived from its unique niche. Signaling and reception evolve in synchrony, since the interaction of ligands and receptors together mediate the chemosensory behavior. Here, we manually annotated the Ors and Grs in D. suzukii and two close relatives, D. biarmipes and D. takahashii, and compared these repertoires to those in other melanogaster group drosophilids to identify candidate chemoreceptors associated with D. suzukii's unusual niche utilization. Results: Our comprehensive annotations of the chemosensory genomes in three species, and comparative analysis with other melanogaster group members provide insights into the evolution of chemosensation in the pestiferous D. suzukii. We annotated a total of 71 Or genes in D. suzukii, with nine of those being pseudogenes (12.7 %). Alternative splicing of two genes brings the total to 62 genes encoding 66 Ors. Duplications of Or23a and Or67a expanded D. suzukii's Or repertoire, while pseudogenization of Or74a, Or85a, and Or98b reduced the number of functional Ors to roughly the same as other annotated species in the melanogaster group. Seventy-one intact Gr genes and three pseudogenes were annotated in D. suzukii. Alternative splicing in three genes brings the total number of Grs to 81. We identified signatures of positive selection in two Ors and three Grs at nodes leading to D. suzukii, while three copies in the largest expanded Or lineage, Or67a, also showed signs of positive selection at the external nodes. Conclusion: Our analysis of D. suzukii's chemoreceptor repertoires in the context of nine melanogaster group drosophilids, including two of its closest relatives (D. biarmipes and D. takahashii), revealed several candidate receptors associated with the adaptation of D. suzukii to its unique ecological niche.
Supplementary material 1 from: Bühlmann I, Gossner MM (2022) Invasive Drosophila suzukii outnumbers native controphics and causes substantial damage to fruits of forest plants. NeoBiota 77: 39-77. https://doi.org/10.3897/neobiota.77.87319
Tables S1, Figure S1
Supplementary material 2 from: Bühlmann I, Gossner MM (2022) Invasive Drosophila suzukii outnumbers native controphics and causes substantial damage to fruits of forest plants. NeoBiota 77: 39-77. https://doi.org/10.3897/neobiota.77.87319
Table S2
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Allen Brain Atlas
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