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 POPULATION DYNAMICS OF DROSOPHYLA SUZUKII (MATSAMURA) IN SWEET AND SOUR CHERRY ORCHARDS IN THE CENTRAL BALKANS MOUNTAIN

2021 ◽  
Vol 37 (37) ◽  
pp. 96-102
Author(s):  
Petko Minkov ◽  
◽  
Nedyalka Palagacheva ◽  
Vasiliy Dzhuvinov ◽  
◽  
...  
Keyword(s):  
Population Dynamics ◽  
Red Wine ◽  
Sweet Cherry ◽  
Sour Cherry ◽  
Spotted Wing Drosophila ◽  
Drosophila Suzukii ◽  
The Balkans ◽  
Soft Fruits

The spotted wing drosophila (SWD) Drosophila suzukii, Matsumura is a polyphagous for many stone and soft fruits species. The pest was recorded in 2014 at sweet cherry orchards in our country and has become a real pest, because SWD attack the fruit when they start to ripe. During 2017-2019 the study was carried out in the Institute of Mountain Stockbreeding and Agriculture in Troyan – Central part of the Balkans Mountain. For monitoring were used traps with red wine and apple vinegar. The first flies at the sweet cherry were found during the second decade of May and in the sour cherry - a little later, at the beginning of June, when the fruit start to ripe. The peak of the population dynamics was established in the second half of June, after which the density began to decreasing. It was found that D. suzukii was preferred more the sweet cherry fruits than sour cherry fruits.

Varietal and Developmental Susceptibility of Tart Cherry (Rosales: Rosaceae) to Drosophila suzukii (Diptera: Drosophilidae)

2019 ◽  
Vol 112 (4) ◽  
pp. 1789-1797 ◽  
Author(s):  
Matthew T Kamiyama ◽  
Christelle Guédot
Keyword(s):  
Sweet Cherry ◽  
Sugar Content ◽  
The United States ◽  
Prunus Cerasus ◽  
Tart Cherry ◽  
Drosophila Suzukii ◽  
Significant Interaction Effect ◽  
Economic Threat ◽  
Vinegar Fly ◽  
Tart Cherries

Abstract Drosophila suzukii (Matsumura) is an invasive species of vinegar fly that infests soft-skinned and stone fruits. Since its first detection in the United States, D. suzukii has become a prominent economic threat in fruit crop industries, particularly affecting caneberry and sweet cherry growers. This study examined the susceptibility of tart cherries (Prunus cerasus) to D. suzukii and sampled for larvae and adult D. suzukii during the tart cherry growing season. Four tart cherry cultivars (Montmorency, Balaton, Carmine Jewel, and Kántorjánosi) were tested at three different ripeness stages (unripe, ripening, and ripe), in no-choice laboratory bio-assays. Field monitoring and sampling revealed that first adult D. suzukii detection occurred on 16 June, and first field larval D. suzukii detection occurred on 28 July. Adult D. suzukii populations increased through late August, and high numbers of adults overlapped with the tart cherry harvest. Lab assays indicated that tart cherry cultivars generally became more susceptible to D. suzukii as they ripened. As the fruit developed, °Brix (sugar content) increased and firmness generally decreased. Tart cherry °Brix and firmness were not correlated with the number of D. suzukii eggs per gram of fruit, but showed a significant interaction effect with the number of larvae and adults per gram of fruit. This study shows that tart cherries are largely not susceptible to D. suzukii when unripe and become susceptible as soon as the fruits change color, suggesting that fruits should be protected as soon as they begin to ripen and D. suzukii populations begin to rise.

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.

Trioza erytreae (African citrus psyllid).

2021 ◽  
Author(s):  
Esther Arengo
Keyword(s):  
Middle East ◽  
Citrus Greening ◽  
Damage Potential ◽  
Quarantine Pest ◽  
Mediterranean Countries ◽  
Significant Damage ◽  
The Family ◽  
Citrus Huanglongbing ◽  
African Form ◽  
Wild Hosts

Abstract The invasive African psyllid, Trioza erytrea, transmits the causal agent of the African form of citrus huanglongbing (greening) disease, Liberibacter africanum, a very destructive disease of citrus plants. It does this under natural conditions in Africa and the Middle East, and has been shown experimentally to transmit the Asian form, Liberibacter asiaticum. The psyllid itself severely distorts leaves, which become stunted and galled. T. erytreae affects species in the family Rutaceae, occurring on wild hosts as well as on Citrus species. T. erytreae is listed as an A1 quarantine pest by EPPO (OEPP/EPPO, 1988) and is also a quarantine pest for CPPC and OIRSA. The importation of plants for planting and cut branches of citrus from countries where either citrus greening bacterium or either of its vectors occur has been prohibited (OEPP/EPPO, 1990). T. erytreae occurs in Africa and parts of the Middle East but could probably establish and spread in Mediterranean countries without difficulty. Besides its role in citrus greening, the psyllid has itself significant damage potential.

scholarly journals Competition Policy in the Southern Mediterranean Countries

2004 ◽  
Vol 3 (1) ◽  
Author(s):  
Damien Geradin ◽  
Nicolas Petit
Keyword(s):  
Competition Policy ◽  
The State ◽  
Mediterranean Countries ◽  
Adoption And Implementation ◽  
Southern Mediterranean ◽  
Competition Rules ◽  
The Mediterranean

The main objective of this paper is to examine the state of adoption and implementation of competition rules in the 12 Southern Mediterranean countries (the "Mediterranean Partners") engaged in association agreements with the EC in the framework of the Barcelona Declaration of November 1995.

scholarly journals Intention to Comply With Mandatory Hurricane Evacuation Orders Among Persons Living Along a Coastal Area

2013 ◽  
Vol 7 (1) ◽  
pp. 46-54 ◽  
Author(s):  
Belinda M. Reininger ◽  
Sartaj Alam Raja ◽  
Ana Sanchez Carrasco ◽  
Zhongxue Chen ◽  
Barbara Adams ◽  
...  
Keyword(s):  
Public Health ◽  
Coastal Area ◽  
Sampling Strategy ◽  
Coastal Areas ◽  
Cluster Sampling ◽  
Level Variation ◽  
Hurricane Evacuation ◽  
Public Health Preparedness ◽  
Census Tracts ◽  
Final Sample

AbstractObjectivesWe examined the intention to comply with mandatory hurricane evacuation orders among respondents living in coastal areas with pronounced poverty by demographic and location characteristics.MethodsA 3-county door-to-door survey was conducted with 1 randomly selected resident per household. Households were selected using a 2-stage cluster sampling strategy and stratified by county. The final sample included 3088 households in 100 census tracts across 3 counties.ResultsFindings suggest that the majority of residents living in areas prone to hurricanes intend to comply with mandatory evacuation orders regardless of income level. Variation in intention to comply with mandatory evacuation orders is shown by age, gender, ethnicity, education, acculturation, county, and distance from shoreline.ConclusionsThe demonstrated high intention to comply with evacuation orders in impoverished areas suggests a need for improved planning to evacuate the most vulnerable residents. Demographic and location characteristics associated with decreased intention to comply may be considered for targeting messages and education before disasters to modifying intentions and plans to evacuate. (Disaster Med Public Health Preparedness. 2013;7:46-54)

Sign in / Sign up

Export Citation Format

Share Document