scholarly journals Ability of Muscidifurax raptorellus and Other Parasitoids and Predators to Control Drosophila suzukii Populations in Raspberries in the Laboratory

Insects ◽  
2019 ◽  
Vol 10 (3) ◽  
pp. 68 ◽  
Author(s):  
Phanie Bonneau ◽  
Justin Renkema ◽  
Valérie Fournier ◽  
Annabelle Firlej
Keyword(s):  
Life Stage ◽  
Invasive Pest ◽  
Adult Size ◽  
Orius Insidiosus ◽  
Drosophila Suzukii ◽  
Biological Responses ◽  
Pupal Parasitoids ◽  
Berry Crops ◽  
Biological Control Potential ◽  
Size Variability

Drosophila suzukii is an invasive pest and economic threat to berry crops in Europe and the Americas. Current methods of control of this pest rely primarily on frequent applications of insecticides; therefore, there is a need for alternative control methods to reduce insecticide reliance. In this study, we evaluated the biological control potential of three parasitoid wasps: Diglyphus isaea, Muscidifurax raptorellus and Pachycrepoideus vindemmiae, and four predators: Chrysoperla carnea, Dicyphus hesperus, Orius insidiosus and Podisus maculiventris. Experiments were conducted for 15 days under controlled conditions in experimental arenas with D. suzukii females and raspberries, allowing for all life stages of D. suzukii to be available to natural enemies. Results showed the first evidence of M. raptorellus’s ability to parasitize D. suzukii, resulting in a 40% reduction. Orius insidiosus, P. vindemmiae and C. carnea were also efficient, reducing D. suzukii numbers by 49%, 43% and 32%, respectively. Predator preferences for each D. suzukii life stage were assessed. The clutch size, sex ratio and adult size variability of D. suzukii pupal parasitoids were also evaluated. This study expands the list of species that can effectively parasitize D. suzukii and provides new insights into the biological responses of M. raptorellus to D. suzukii pupae.

The attractant, but not the trap design, affects the capture of Drosophila suzukii in berry crops

2020 ◽  
pp. 1-8
Author(s):  
Samuel Cruz-Esteban ◽  
Edith Garay-Serrano ◽  
Christian Rodríguez ◽  
Julio C. Rojas
Keyword(s):  
Chemical Cues ◽  
Insect Pests ◽  
Invasive Pest ◽  
Fruit Crops ◽  
Drosophila Suzukii ◽  
Trap Design ◽  
Apple Cider ◽  
Berry Crops ◽  
Soft Fruit ◽  
Determining Factor

Abstract Drosophila suzukii (Matsumura) (Diptera: Drosophilidae) is recognized as an invasive pest in Europe and North America. In Mexico, it is one of the main insect pests of soft-skinned fruits such as blueberries, strawberries, raspberries, blackberries, plums, and guava. Previous studies have shown that D. suzukii uses visual and chemical cues during host plant searching. This knowledge has been used to develop traps and attractants for monitoring D. suzukii. In this study, five trap designs were evaluated to monitor D. suzukii under field conditions. Traps were baited with SuzukiiTrap®, Z-Kinol, an attractant based on acetoin and methionol, or apple cider vinegar (ACV) enriched with 10% ethanol (EtOH) with the synergistic action of carbon dioxide (CO2). Our results suggested that the attractant was the determining factor in capturing D. suzukii, while trap design seemed to play a modest role. We found that traps baited with Z-Kinol captured the highest number of D. suzukii compared to that caught by traps baited with SuzukiiTrap®, or ACV + EtOH + CO2. The highest catch numbers occurred in blackberry, followed by strawberry, raspberry, and blueberry. Traps captured more females than males. The results obtained may be useful for monitoring D. suzukii populations in Mexico and elsewhere, particularly in states where soft fruit crops are a component of agricultural activities.

scholarly journals Economic Impact of Spotted Wing Drosophila (Diptera: Drosophilidae) Yield Loss on Minnesota Raspberry Farms: A Grower Survey

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Gigi DiGiacomo ◽  
Joleen Hadrich ◽  
William D Hutchison ◽  
Hikaru Peterson ◽  
Mary Rogers
Keyword(s):  
Economic Impact ◽  
Yield Loss ◽  
Spotted Wing Drosophila ◽  
Control Measures ◽  
Invasive Pest ◽  
Yield Losses ◽  
Drosophila Suzukii ◽  
Future Production ◽  
Research Initiative ◽  
Berry Crops

Abstract Minnesota was dubbed the ‘raspberry consumption capital of America’ in 2017 by wholesaler Driscoll’s, Inc. Local production of this high-demand fruit, however, is limited by the invasive pest, spotted wing Drosophila (Drosophila suzukii Matsumura, Diptera: Drosophilidae). Recent research to develop integrated pest management (IPM) programs for MN berry crops indicates that raspberry growers are particularly vulnerable to significant spotted wing Drosophila-related yield losses. Spotted wing Drosophila was detected in Minnesota in 2012 across 29 counties. This analysis explores the economic impact of raspberry yield losses associated with spotted wing Drosophila in Minnesota as part of a multifaceted research initiative. An electronic survey of 157 MN berry growers was conducted in November 2017. Eighty-two individual grower surveys were returned (52% response rate). The survey included questions about production acreage, marketing practices, spotted wing Drosophila-related yield losses and future production intentions. The results of the e-survey indicate that raspberry growers have borne the highest levels of infestation among MN fruit growers surveyed. Spotted wing Drosophila-related yield losses for raspberry growers ranged from 2 to 100% of planted acreage.The median yield loss for this group of growers was 20% in 2017. Applying the median yield loss to ex-ante production estimates, we conclude that MN growers lost approximately $2.36 million in raspberry sales during the 1 yr studied. Investing in spotted wing Drosophila control measures will help MN growers reduce some of these losses in the future.

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

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

scholarly journals The use of light spectrum blocking films to reduce populations of Drosophila suzukii Matsumura in fruit crops

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Michelle T. Fountain ◽  
Amir Badiee ◽  
Sebastian Hemer ◽  
Alvaro Delgado ◽  
Michael Mangan ◽  
...  
Keyword(s):  
Control Strategies ◽  
Field Trials ◽  
Biological Data ◽  
Insect Vision ◽  
Invasive Pest ◽  
Effective Control ◽  
Fruit Crops ◽  
Light Spectrum ◽  
Drosophila Suzukii ◽  
The Impact

Abstract Spotted wing drosophila, Drosophila suzukii, is a serious invasive pest impacting the production of multiple fruit crops, including soft and stone fruits such as strawberries, raspberries and cherries. Effective control is challenging and reliant on integrated pest management which includes the use of an ever decreasing number of approved insecticides. New means to reduce the impact of this pest that can be integrated into control strategies are urgently required. In many production regions, including the UK, soft fruit are typically grown inside tunnels clad with polyethylene based materials. These can be modified to filter specific wavebands of light. We investigated whether targeted spectral modifications to cladding materials that disrupt insect vision could reduce the incidence of D. suzukii. We present a novel approach that starts from a neuroscientific investigation of insect sensory systems and ends with infield testing of new cladding materials inspired by the biological data. We show D. suzukii are predominantly sensitive to wavelengths below 405 nm (ultraviolet) and above 565 nm (orange & red) and that targeted blocking of lower wavebands (up to 430 nm) using light restricting materials reduces pest populations up to 73% in field trials.

Seasonal growth and duration of the parasitic life stage of the landlocked sea lamprey (Petromyzon marinus)

1995 ◽  
Vol 52 (6) ◽  
pp. 1257-1264 ◽  
Author(s):  
Roger A. Bergstedt ◽  
William D. Swink
Keyword(s):  
Seasonal Pattern ◽  
Life Stage ◽  
Petromyzon Marinus ◽  
Biomass Accumulation ◽  
Sea Lamprey ◽  
Gonadal Development ◽  
Adult Size ◽  
Sea Lampreys ◽  
Mean Size ◽  
Host Mortality

We used lengths and weights of 2367 live parasitic-phase sea lampreys (Petromyzon marinus) collected from Lake Huron, 1984–1990, to calculate their mean size at half-month intervals. Growth in weight was linear during June through September; increments averaged 11.1 g per half month. Growth increased sharply in October to several times the summer rate. We speculate that the increase in growth in October is explained partly by water temperature and partly by an increase in appetite related to the onset of gonadal development. The greater compression of biomass accumulation in autumn than has been previously demonstrated better explains the autumn pulse of sea lamprey induced host mortality. Based on the seasonal pattern of growth and on recaptures of marked sea lampreys, we conclude that landlocked individuals grow to adult size and mature in one parasitic growth year. Regressions of weight (grams) on total length (millimetres) differed significantly among months, and the season of collection must be considered in predicting weight from length.

scholarly journals Genetically Encoded CRISPR components Yield Efficient Gene Editing in the Invasive Pest,Drosophila suzukii

2021 ◽  
Author(s):  
Nikolay P. Kandul ◽  
Esther J. Belikoff ◽  
Junru Liu ◽  
Anna Buchman ◽  
Fang Li ◽  
...  
Keyword(s):  
Population Control ◽  
Invasive Pest ◽  
Drosophila Suzukii ◽  
Guide Rnas ◽  
Cas9 Nuclease ◽  
Efficient Gene ◽  
Transgenic Lines ◽  
Repeated Applications ◽  
Very High ◽  
Genetic Strategies

AbstractOriginally from Asia,Drosophila suzukii(Matsumura, 1931, Diptera:Drosophilidae) is presently a global pest of economically important soft-skinned fruits. Also commonly known as spotted wingDrosophila(SWD), it is largely controlled through repeated applications of broad-spectrum insecticides. There is a pressing need for a better understanding of SWD biology and for developing alternative environmentally-friendly methods of control. The RNA-guided Cas9 nuclease has revolutionized functional genomics and is an integral component of several recently developed genetic strategies for population control of insects. Here we have developed transgenic strains that encode three different terminators and four different promoters to express Cas9 in both the soma and/or germline of SWD. The Cas9 lines were evaluated through genetic crossing to transgenic lines that encode single guide RNAs targeting the conserved X-linkedyellowbody andwhiteeye genes. We find that several Cas9/gRNA lines display very high editing capacity. Going forward, these tools will be instrumental for evaluating gene function in SWD and may provide tools useful for the development of new genetic strategies for control of this invasive species.

Identification of entomopathogenic bacteria associated with the invasive pest Drosophila suzukii in infested areas of Germany

2020 ◽  
Vol 173 ◽  
pp. 107389 ◽  
Author(s):  
Nils Hiebert ◽  
Tessa Carrau ◽  
Merle Bartling ◽  
Andreas Vilcinskas ◽  
Kwang-Zin Lee
Keyword(s):  
Invasive Pest ◽  
Drosophila Suzukii ◽  
Entomopathogenic Bacteria

scholarly journals Performance of Trichopria drosophilae (Hymenoptera: Diapriidae), a Generalist Parasitoid of Drosophila suzukii (Diptera: Drosophilidae), at Low Temperature

2020 ◽  
Vol 20 (3) ◽  
Author(s):  
Fernanda Colombari ◽  
Lorenzo Tonina ◽  
Andrea Battisti ◽  
Nicola Mori
Keyword(s):  
Low Temperature ◽  
Food Supply ◽  
Early Spring ◽  
Invasive Pest ◽  
Drosophila Suzukii ◽  
Lower Range ◽  
Adult Females ◽  
Emergence Rate ◽  
Pupal Mortality ◽  
High Elevations

Abstract Survival and parasitism activity of Trichopria drosophilae Perkins adults, a cosmopolitan parasitoid of Drosophila spp., were studied under laboratory conditions using five constant temperatures at the lower range known for this enemy, from 4 to 20°C in 4°C increments. Drosophila suzukii Matsumura, an invasive pest of small fruits, was used as a host. Commercially available adult parasitoids were provided with 1) food and D. suzukii pupae; 2) food and no D. suzukii pupae; 3) no food and no pupae. The results show that adult females of T. drosophilae lived longer than males, and both generally benefitted from food supply. The highest level of survival was observed between 8 and 12°C for fed insects, irrespective of whether they were offered host pupae or not. The absence of food led to the highest mortality, but the parasitoid demonstrated considerably resistance to prolonged starvation. Successful parasitism increased steadily with temperature and reached the highest value at 20°C. Conversely, D. suzukii emergence rate was high after exposure of pupae to parasitoids at 4°C, while pupal mortality increased strongly with temperature until 12°C. The findings indicate that T. drosophilae is well adapted to the relatively cold conditions experienced in early spring and in autumn or at high elevations, when the host pupae could be largely available. The long lifespan of the adults and the ability to parasitize the host at low temperature make T. drosophilae potentially useful for the biocontrol of D. suzukii.

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