Insights into the susceptibility of raspberries to <i>Drosophila suzukii</i> oviposition

Wöhner, Thomas; Pinggera, Johanna; Fritzsche, Eric; Peil, Andreas; Pinczinger, Dora; Hanke, Magda‐Viola

doi:10.1111/jen.12839

Cited by 8 publications

(7 citation statements)

References 39 publications

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“…The skin resistance of grapevine berries was shown to be the determining factor in the number of eggs oviposited when compared to other fruit parameters [53]. Skin penetration resistance and other characteristics such as brix, pH, skin firmness, and coloration were not quantified in this study but have been shown to be major factors in the susceptibility of fruit to pest infestation [29,[54][55][56]. On average, it is established that the skin penetration resistance of a fruit is negatively correlated to D. suzukii oviposition levels and that fruit with higher pH and brix are more attractive to D. suzukii for oviposition and development [20,29,46,55,[57][58][59].…”

Section: Discussionmentioning

confidence: 79%

Evaluation of Wild Flora Surrounding Blueberry Fields as Viable Hosts of Drosophila suzukii (Matsumura, 1931) (Diptera: Drosophilidae) in Georgia

Grant¹,

Sial²

2021

Insects

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Drosophila suzukii, an economically important pest of small and thin-skinned fruits, has caused annual crop losses up to 20% in the state of Georgia’s multimillion-dollar blueberry industry. The known host range of D. suzukii is large, yet the breadth of uncultivated and wild plants that can serve as alternative hosts in the southeastern United States is still not fully understood. Establishing comprehensive lists of non-crop D. suzukii hosts in woodlands near blueberry production will assist in the creation of more sustainable integrated pest management (IPM) strategies. Objectives of this study were to determine viability of wild fruiting plant species to this pest based on survivorship to adulthood and assess D. suzukii short-range preference between cultivated blueberries and wild fruit. Laboratory choice and no-choice assays were performed to determine if D. suzukii could complete its development on wild fruits sampled from the field. Results from our no-choice assays indicated that multiple species of wild fruits surveyed in Georgia were viable D. suzukii hosts including blackberry species, deerberry, hillside blueberry, common pokeweed, beautyberry, elderberry, evergreen blueberry, and large gallberry. Yet, none of these hosts were preferred by adult female D. suzukii as ovipositional substrates when compared to cultivated blueberries. However, these uncultivated species have the potential to sustain D. suzukii populations pre- and post-harvest season. This information can help farmers do more targeted management of these viable alternative hosts from wooded areas surrounding blueberry fields in order to minimize D. suzukii populations.

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Section: Discussionmentioning

confidence: 79%

Evaluation of Wild Flora Surrounding Blueberry Fields as Viable Hosts of Drosophila suzukii (Matsumura, 1931) (Diptera: Drosophilidae) in Georgia

Grant¹,

Sial²

2021

Insects

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“…Red-and soft-fruited hosts in the section Myrtillus, especially Hawaiian and Tahitian genotypes, were the most susceptible to fly attack. However, larger hexaploid fruit appear to also exhibit resistance perhaps due to their thicker epidermis, as was the case in a comparative host study of raspberry genotypes infested by D. suzukii (Wöhner et al 2021). Diploid fruits of some genotypes were sufficiently small, tart, sweet, and firm to thwart entirely D. suzukii feeding and oviposition.…”

Section: Discussionmentioning

confidence: 91%

Evaluating global Vaccinium germplasm for resistance against invasive Drosophila suzukii (Diptera: Drosophilidae)

Sampson¹,

Stringer²,

Hummer

et al. 2023

Journal of Economic Entomology

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Control of spotted-wing Drosophila, Drosophila suzukii, in small fruits emphasizes biological, cultural, and chemical approaches, whereas studies of host plant resistance as a form of genetic control are just getting underway. The identification of resistance patterns among genotypes of host plants whose fruit, leaves, roots, stems, or seeds are specifically targeted by an invasive pest is the first step in the development of an effective genetic control. Therefore, a detached fruit bioassay was developed to screen for D. suzukii oviposition and larval infestation within berries from 25 representative species and hybrids of wild and cultivated Vaccinium. Ten Vaccinium species showed strong resistance; among them, two wild diploids originating from within the fly’s native range: V. myrtoides and V. bracteatum. Other resistant species came from the sections Pyxothamnus and Conchophyllum. They included New World V. consanguineum and V. floribundum. Large-cluster blueberry, V. amoenum, and three Floridian genotypes of related rabbiteye blueberry, V. virgatum, were the only hexaploids expressing strong resistance against D. suzukii. Most screened blueberry genotypes from managed lowbush and cultivated highbush types were susceptible to the flies’ attacks (i.e., oviposition). Tetraploid blueberries tended to host the most eggs, whereas diploids and hexaploids harbored 50%–60% fewer eggs, on average. D. suzukii cannot lay eggs or complete development in the smallest, sweetest, and firmest diploid fruits. Likewise, certain genotypes of large-fruited tetraploid and hexaploid blueberry strongly curbed D. suzukii egg-laying and larval growth, indicating the possibility of heritable resistance operating against this invasive fly species.

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“…These differences in cultivar susceptibility were attributed to variation in fruit firmness and penetration force between cultivars, with fewer eggs laid in firmer fruit [ 45 ]. The role of fruit firmness was corroborated in laboratory comparisons of raspberry cultivars [ 46 ]. Additional interactions between the fruit’s chemical and physical properties may also influence susceptibility.…”

Section: Cultural Control Tacticsmentioning

confidence: 96%

“…Ripe fruit is more susceptible to D. suzukii than unripe fruit [ 14 , 43 , 44 ]. Fruit softens and becomes sweeter as it ripens, and D. suzukii oviposition and larval development are positively correlated with °Brix (soluble sugars) and negatively correlated with fruit firmness [ 14 , 45 , 46 ]. These characteristics vary across crop types and varieties, and are also influenced by environment and production practices [ 47 , 48 ].…”

Section: Cultural Control Tacticsmentioning

confidence: 99%

Cultural Control of Drosophila suzukii in Small Fruit—Current and Pending Tactics in the U.S.

Schöneberg

Lewis

Burrack

et al. 2021

Insects

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Spotted-wing drosophila, Drosophila suzukii (Matsumura) (Diptera: Drosophilidae), a vinegar fly of Asian origin, has emerged as a devastating pest of small and stone fruits throughout the United States. Tolerance for larvae is extremely low in fresh market fruit, and management is primarily achieved through repeated applications of broad-spectrum insecticides. These applications are neither economically nor environmentally sustainable, and can limit markets due to insecticide residue restrictions, cause outbreaks of secondary pests, and select for insecticide resistance. Sustainable integrated pest management programs include cultural control tactics and various nonchemical approaches for reducing pest populations that may be useful for managing D. suzukii. This review describes the current state of knowledge and implementation for different cultural controls including preventative tactics such as crop selection and exclusion as well as strategies to reduce habitat favorability (pruning; mulching; irrigation), alter resource availability (harvest frequency; sanitation), and lower suitability of fruit postharvest (cooling; irradiation). Because climate, horticultural practices, crop, and market underlie the efficacy, feasibility, and affordability of cultural control tactics, the potential of these tactics for D. suzukii management is discussed across different production systems.

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Insights into the susceptibility of raspberries to Drosophila suzukii oviposition

Cited by 8 publications

References 39 publications

Evaluation of Wild Flora Surrounding Blueberry Fields as Viable Hosts of Drosophila suzukii (Matsumura, 1931) (Diptera: Drosophilidae) in Georgia

Evaluation of Wild Flora Surrounding Blueberry Fields as Viable Hosts of Drosophila suzukii (Matsumura, 1931) (Diptera: Drosophilidae) in Georgia

Evaluating global Vaccinium germplasm for resistance against invasive Drosophila suzukii (Diptera: Drosophilidae)

Cultural Control of Drosophila suzukii in Small Fruit—Current and Pending Tactics in the U.S.

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