scholarly journals Can exotic drosophilids share the same niche of the invasive Drosophila suzukii?

2019 ◽  
Vol 51 (1) ◽  
Author(s):  
N. Amiresmaeili ◽  
C. Jucker ◽  
S. Savoldelli ◽  
D. Lupi
Keyword(s):  
Sex Ratio ◽  
Northern Italy ◽  
Seasonal Occurrence ◽  
Drosophila Suzukii ◽  
Zaprionus Indianus ◽  
Apple Cider ◽  
Baited Traps ◽  
Chymomyza Amoena

The presence of the four exotic drosophilids Chymomyza amoena (Loew), Drosophila suzukii (Matsumura), Zaprionus indianus (Gupta) and Zaprionus tuberculatus Malloch has been investigated in different orchards in Northern Italy for two consecutive years. The presence and the abundance of the population of the drosophilid flies were surveyed with apple cider vinegar traps, fruit baited traps, and fruit collection. Chymomyza amoena, Z. tuberculatus and D. suzukii have been identified in the Apple Cider Vinegar traps in both years. Only D. suzukii and Z. tuberculatus emerged from fruit baited traps. Except for D. suzukii, no other exotic drosofilid was captured from the fruit collection. Z. indianus was never observed. Analyses of the presence of the different species, seasonal occurrence and sex ratio are provided.

scholarly journals Olfactory Preference of Drosophila suzukii Shifts between Fruit and Fermentation Cues over the Season: Effects of Physiological Status

Insects ◽  
2019 ◽  
Vol 10 (7) ◽  
pp. 200 ◽  
Author(s):  
Rik Clymans ◽  
Vincent Van Kerckvoorde ◽  
Eva Bangels ◽  
Wannes Akkermans ◽  
Ammar Alhmedi ◽  
...  
Keyword(s):  
Laboratory Experiments ◽  
Physiological Status ◽  
Drosophila Suzukii ◽  
Apple Cider ◽  
Baited Traps ◽  
Full Complement ◽  
Protein Rich ◽  
Trap Catches ◽  
Olfactory Behaviour ◽  
Preference Experiment

Worldwide monitoring programs of the invasive fruit pest Drosophila suzukii Matsumura (Diptera: Drosophilidae), using fermentation baits like apple cider vinegar (ACV), revealed a counterintuitive period of low trap catches during summer, followed by an autumn peak. In this study, we demonstrate that ACV baited traps indeed provide a distorted image of the D. suzukii population dynamics as it is possible to capture higher numbers during this “low capture period” with synthetic lures. It was hypothesised that the preference of D. suzukii populations for fermentation cues like ACV is most pronounced during autumn, winter and spring, while the flies prefer fresh fruit cues during summer and that this seasonal preference is related to the changing physiology of the flies over the season. To test this hypothesis, the preference between fermentation cues (ACV) and host fruits (strawberries) and the effect of physiology (sex, seasonal morphology and feeding, mating and reproductive status) was investigated both in olfactometer laboratory experiments and a year-round field preference experiment. In olfactometer experiments we demonstrated that protein deprived females, virgin females with a full complement of unfertilised eggs and males show a strong preference for fermentation cues while fully fed reproductive summer morph females generally prefer fruit cues. These findings indicate that D. suzukii is attracted to fermentation volatiles in search of (protein-rich) food and to fruit volatiles in search of oviposition substrates. Winter morph and starved females displayed indiscriminating olfactory behaviour. In the field preference experiment, the hypothesised seasonal shift between fermentation and fruit cues was confirmed. This shift appeared to be highly temperature-related and was similarly observed for summer and winter morphs.

scholarly journals Brown Rice Vinegar as an Olfactory Field Attractant for Drosophila suzukii (Matsumura) and Zaprionus indianus Gupta (Diptera: Drosophilidae) in Cherimoya in Maui, Hawaii, with Implications for Attractant Specificity between Species and Estimation of Relative Abundance

Insects ◽  
2019 ◽  
Vol 10 (3) ◽  
pp. 80 ◽  
Author(s):  
Brittany Willbrand ◽  
Douglas Pfeiffer
Keyword(s):  
Relative Abundance ◽  
Red Wine ◽  
Brown Rice ◽  
Effective Field ◽  
Drosophila Suzukii ◽  
Zaprionus Indianus ◽  
Apple Cider ◽  
Olfactory Preferences ◽  
Species Specific ◽  
Rice Vinegar

Drosophila suzukii (Matsumura) is an agricultural pest that has been observed co-infesting soft-skinned fruits with Zaprionus indianus Gupta. The characterization of olfactory preferences by species is a necessary step towards the development of species-specific attractants. Five olfactory attractants were used to survey the populations of two invasive drosophilids in cherimoya in Maui, Hawaii. The attractants used were apple cider vinegar (ACV), brown rice vinegar (BRV), red wine (RW), apple cider vinegar and red wine (ACV+RW; 60/40), and brown rice vinegar and red wine (BRV+RW; 60/40). For D. suzukii, BRV+RW resulted in more captures than BRV, ACV, and RW, while ACV+RW resulted in more captures than ACV. No differences were observed between BRV+RW and ACV+RW. BRV had greater specificity in attracting D. suzukii compared to ACV, ACV+RW, and RW. For Z. indianus, no significant differences were observed in either the mean captures or specificity for any attractant used. Collectively, these findings demonstrate that (1) BRV and BRV+RW are effective field attractants and (2) D. suzukii has unique olfactory preferences compared to non-target drosophilids, while (3) Z. indianus’ preferences do not appear to vary from non-target drosophilids, and (4) the accuracy of relative abundance is impacted by the specificity of the attractants.

scholarly journals Raspberry as a Source for the Development of Drosophila suzukii Attractants: Laboratory and Commercial Polytunnel Trials

Insects ◽  
2019 ◽  
Vol 10 (5) ◽  
pp. 137 ◽  
Author(s):  
Rodrigo Lasa ◽  
Ricardo A. Toledo-Hernández ◽  
Douglas Rodríguez ◽  
Trevor Williams
Keyword(s):  
Baker’S Yeast ◽  
Spotted Wing Drosophila ◽  
Mass Trapping ◽  
Baker's Yeast ◽  
Drosophila Suzukii ◽  
Commercial Products ◽  
Apple Cider ◽  
Baited Traps ◽  
Capture Rates ◽  
Better Than

Several commercial products and home-made attractants have been developed for monitoring and mass-trapping of the spotted wing drosophila, Drosophila suzukii. Growers in Mexico have adopted an attractant based on a fermenting mixture of raspberry pulp and sucrose, with anecdotally promising results. We compared the capture rates of traps baited with raspberry pulp + sucrose with captures from a range of alternative attractants. Raspberry pulp alone or with sucrose was more attractive than apple cider vinegar (ACV) or SuzukiiTrap and similar to baker’s yeast + sucrose in laboratory cage studies. Synthetic raspberry aroma (0.1–10% concentration), in water or mixed with ACV, did not improve capture rates in the laboratory. Traps baited with raspberry + sucrose or ACV had similar captures of D. suzukii in raspberry or blackberry polytunnels in Michoacán, Mexico. Raspberry + sucrose baited traps captured significantly higher numbers of other drosophilid species, leading to higher total numbers of captured flies (all species), which may explain why Mexican growers favor the raspberry-based attractant. The commercial products SuzukiiTrap and Z-Kinol had lower captures than ACV in polytunnels, although SuzukiiTrap had the highest selectivity in captures of D. suzukii (81% of flies captured). A two-component trap (2C trap) baited with ACV + ethanol as the drowning solution and raspberry pulp + sucrose or baker’s yeast + sucrose in a ventilated tube device was markedly more effective than the trap currently used by growers. We conclude that raspberry pulp + sucrose is as effective for the attraction of D. suzukii as ACV under commercial polytunnel conditions. The 2C trap performed better than the transparent cup trap currently used by berry producers in Mexico.

LINEATIN ENANTIOMER PREFERENCE, FLIGHT PERIODS, AND EFFECT OF PHEROMONE CONCENTRATION AND TRAP LENGTH ON THREE SYMPATRIC SPECIES OF TRYPODENDRON (COLEOPTERA: SCOLYTIDAE)

2000 ◽  
Vol 132 (6) ◽  
pp. 877-887 ◽  
Author(s):  
B.S. Lindgren ◽  
S.E.R. Hoover ◽  
A.M. MacIsaac ◽  
C.I. Keeling ◽  
K.N. Slessor
Keyword(s):  
Sex Ratio ◽  
Reproductive Isolation ◽  
Release Rate ◽  
Sympatric Species ◽  
Ambrosia Beetle ◽  
Flight Period ◽  
Trypodendron Lineatum ◽  
Temporal Separation ◽  
Baited Traps ◽  
Pheromone Concentration

AbstractThe effects of lineatin enantiomer ratios, lineatin release rate, and trap length on catches and the flight periods of three sympatric species of Trypodendron Stephens were investigated in field bioassays using multiple-funnel traps. The ambrosia beetle, Trypodendron betulae Swaine, was caught in similar numbers in baited traps and blank control traps, showing that this species does not respond to lineatin. Our results confirmed that Trypodendron lineatum (Olivier) is attracted only to (+)-lineatin. Trypodendron rufitarsus (Kirby) and Trypodendron retusum (LeConte) were shown to utilize lineatin and like T. lineatum were caught only when (+)-lineatin was present. These results indicate that lineatin does not govern reproductive isolation among these three species. There was no effect by (+)-lineatin release rate within the range tested. The flight of T. rufitarsus commenced earlier and ceased before the peak of the T. lineatum flight, suggesting that temporal separation may be an important component of reproductive isolation between these two species. The flight period of T. retusum was similar to that of T. lineatum. Host odours may aid in reproductive isolation of these two species. Enantiomer blend did not significantly affect sex ratio in any species; however, sex ratio differed among species, indicating that different species responded differently to the traps or that natural sex ratios differ. Catches of T. rufitarsus and T. retusum increased with trap length when pheromone release per trap was held constant and when release was held constant relative to trap length. Trap length and release rate did not affect sex ratio.

Monitoring of Drosophila suzukii (Diptera: Drosophilidae) in Okanagan Valley vineyards, British Columbia, Canada, and assessment of damage to table and wine grapes (Vitaceae)

2020 ◽  
Vol 152 (4) ◽  
pp. 415-431
Author(s):  
Susanna Acheampong ◽  
Etienne Lord ◽  
D. Thomas Lowery
Keyword(s):  
British Columbia ◽  
Weather Conditions ◽  
Wine Grape ◽  
Drosophila Suzukii ◽  
Wine Grapes ◽  
Apple Cider ◽  
Table Grapes ◽  
Soft Fruit ◽  
Grape Cultivars ◽  
Okanagan Valley

AbstractSpotted-wing drosophila, Drosophila suzukii, (Matsumura) (Diptera: Drosophilidae), has become a serious pest of soft fruit in the Okanagan Valley of British Columbia, Canada since its detection in 2009. The study was conducted to determine the distribution of D. suzukii and damage levels in grapes. Apple cider vinegar-baited traps placed in table and wine grape (Vitis vinifera Linnaeus; Vitaceae) vineyards during 2011–2013 demonstrated that D. suzukii was numerous in all sites, with earliest emergence and highest numbers recorded in 2013. Drosophila suzukii were reared from intact and damaged table grapes and damaged wine grapes collected from the field, but not from intact wine grapes. Drosophila suzukii were reared in low numbers in 2011 from intact fruit of 11 wine grape cultivars exposed artificially in the laboratory. Susceptibility of intact wine grapes under laboratory conditions in 2011 when sour rot was widespread might relate in part to undetected infections of berries due to weather conditions. Identification of Drosophila Fallén species revealed that D. suzukii comprised a small portion of the total. Our results demonstrate that healthy wine grapes in the Okanagan Valley of British Columbia are largely undamaged by D. suzukii, while certain table grape cultivars should be protected from attack.

scholarly journals Effects of Fine-Mesh Exclusion Netting on Pests of Blackberry

2019 ◽  
Author(s):  
Ryan Kuesel ◽  
Delia Scott Hicks ◽  
Kendall Archer ◽  
Amber Sciligo ◽  
Ricardo Bessin ◽  
...  
Keyword(s):  
Popillia Japonica ◽  
Japanese Beetle ◽  
Drosophila Suzukii ◽  
Marketable Yield ◽  
Insecticide Treatment ◽  
Fine Mesh ◽  
Baited Traps ◽  
Potential Alternative ◽  
Organically Managed ◽  
Insecticide Sprays

Fine-mesh exclusion netting is a potential alternative to organic and conventional insecticide application to control numerous pests of fruit crops. We tested whether fine-mesh exclusion netting would reduce pest abundance and increase marketable yield compared to organic spinosad insecticide sprays in an organically managed blackberry field. At the completion of flowering, we covered blackberry rows (N = 3) with fine-mesh exclusion netting (ProtekNet) and treated alternating rows (N = 3) with an organic spinosad insecticide (Entrust™). Fine-mesh exclusion reduced green June beetle (Cotinus nitida Linnaeus) and bird presence and marginally reduced Japanese beetle (Popillia japonica Newman) presence on blackberry canes compared to organic spinosad insecticide treatment. Exclusion netting reduced the capture of spotted-wing Drosophila (Drosophila suzukii Matsumara; SWD) in baited traps in the fourth week of exclusion, and reduced the overall number of SWD adults emerging from harvested blackberry fruits. Marketable yield in the fine-mesh exclusion treatments was two times higher than the organic spinosad insecticide treatment. These results suggest that fine-mesh exclusion netting is a functional pest control alternative to organic insecticide treatment.

scholarly journals New finding sites of Drosophila suzukii (Matsumura, 1931) in perennial crops of Zagreb County

2019 ◽  
Vol 23 (1-2) ◽  
pp. 15-24
Author(s):  
Ivana Pajač Živković ◽  
Dora Kapuđija
Keyword(s):  
Invasive Species ◽  
Sex Ratio ◽  
Drosophila Suzukii ◽  
Perennial Crops ◽  
New Finding

The presence of invasive Drosophila suzukii (Matsumura, 1931) was investigated in three perennial crops (two orchards - Šurdovec and Donje Orešje and one vineyard - Donje Orešje) in the area of Zagreb county. Samples of D. suzukii were collected during the three-month period (from August 18th until November 18th, 2017) by using apple vinegar traps. The presence of D. suzukii was confirmed at all three investigated sites. In the orchard Šurdovec the lowest number (25 specimens) of D. suzukii was caught while the largest number (84 specimens) was caught in the orchard Donje Orešje. In all perennial crops D. suzukii was classified as eudominant species which implicates its invasive character. Sex ratio of D. suzukii at the orchard and vineyard Donje Orešje was female-biased while only in the orchard Šurdovec was male-biased which points to the further spread of the species in the area of Donje Orešje. The results of the research are a contribution to the knowledge of the distribution of this invasive species in the new areas of Zagreb County.

scholarly journals Population Dynamics of Drosophila suzukii in Coastal and Mainland Sweet Cherry Orchards of Greece

Insects ◽  
2020 ◽  
Vol 11 (9) ◽  
pp. 621
Author(s):  
Stella A. Papanastasiou ◽  
Vasilis G. Rodovitis ◽  
Evmorfia P. Bataka ◽  
Eleni Verykouki ◽  
Nikos T. Papadopoulos
Keyword(s):  
Population Dynamics ◽  
Coastal Area ◽  
Sweet Cherry ◽  
Coastal Areas ◽  
Drosophila Suzukii ◽  
Apple Cider ◽  
Mediterranean Countries ◽  
Southern Mediterranean ◽  
Wild Hosts ◽  
Of Greece

Despite the recent invasion and wide spread of Drosophila suzukii Matsumura (Diptera: Drosophilidae) in Europe, little is known regarding its population trends in coastal areas of the southern Mediterranean countries. Using adult trapping and fruit sampling, we studied the population dynamics of D. suzukii in coastal and mainland (semi-highland) cherry orchards of Greece, from 2018 to 2020. Adults were captured in traps baited with apple cider vinegar, placed in conventional and unmanaged sweet-cherry orchards, and in neighbouring wild growing hosts. Sampling of sweet-cherry fruit to assess infestation levels was conducted from early and late-ripening cherry cultivars in both areas. Adults were captured throughout the year in the coastal area with two peaks registered in spring and late-autumn. Captures were nearly zero during the hot summer months. Flight activity exhibited only one peak in autumn at the mainland area, and ceased during winter and spring. Captures in wild hosts were lower during the sweet-cherry ripening period than later in the season. Higher sweet-cherry infestation levels were recorded in the coastal than in the mainland area and in unmanaged than in commercial orchards. Both early and late-ripening cultivars were highly susceptible to D. suzukii infestation in the coastal area. Infestation rates were higher in late-ripening cultivars than in early-ripening ones in the mainland area. We conclude that D. suzukii has well adapted to the Mediterranean climate of Greece, and is able to progressively exploit several crops and wild hosts of mainland and coastal areas.

scholarly journals Invasive Agricultural Pest Drosophila suzukii (Diptera, Drosophilidae) Appeared in the Russian Caucasus

Insects ◽  
2020 ◽  
Vol 11 (11) ◽  
pp. 826
Author(s):  
Andrzej O. Bieńkowski ◽  
Marina J. Orlova-Bienkowskaja
Keyword(s):  
Plant Protection ◽  
Morphological Characters ◽  
Economic Damage ◽  
Drosophila Suzukii ◽  
Wine Production ◽  
Invasive Pests ◽  
Baited Traps ◽  
Black Sea Coast ◽  
Significant Damage ◽  
Mediterranean Plant

Spotted-wing drosophila Drosophila suzukii (Matsumura) is one of the most important invasive pests of fruit and wine production worldwide. This species feeds on Prunus spp., Rubus spp., Fragaria spp. (Rosaceae), Vaccinium spp. (Ericaceae), Vitis spp. (Vitaceae), and other soft fruits. It causes significant damage because, unlike most other Drosophila species, it oviposits and feeds on healthy fruits. Drosophila suzukii is a quarantine pest that is included on the European and Mediterranean Plant Protection Organization (EPPO) A2 List. This species is native to East Asia and has been rapidly spreading through Europe since 2008. Herein, we report the first records of D. suzukii in European Russia. In 2017 and 2020, we placed baited traps in different districts of the resort city of Sochi (Black sea Coast of the Caucasus, Krasnodar Territory, Russia). Three specimens of D. suzukii were collected in June 2017, two specimens in September 2017, and 44 specimens in September 2020. Specimens were identified by the typical female ovipositor, spotted wings of the males, and other morphological characters. Krasnodar Territory is one of the main fruit-producing regions of Russia. Therefore, populations of this pest should be monitored and measures to minimize economic damage should be taken.

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