Biospeckle Activity of Highbush Blueberry Fruits Infested by Spotted Wing Drosophila (Drosophila suzukii Matsumura)

In this study, the potential of the biospeckle phenomenon for detecting fruit infestation by Drosophila suzukii was examined. We tested both graphical and analytical approaches to evaluate biospeckle activity of healthy and infested fruits. As a result of testing the qualitative approach, a generalized difference method proved to be better at identifying infested areas than Fujii’s method. Biospeckle activity of healthy fruits was low and increased with infestation development. It was found that the biospeckle activity index calculated from spatial-temporal speckle correlation of THSP was the best discriminant of healthy fruits and fruits in two different stages of infestation development irrespective of window size and pixel selection strategy adopted to create the THSP. Other numerical indicators of biospeckle activity (inertia moment, absolute value of differences, average differences) distinguished only fruits in later stage of infestation. Regular values of differences turned out to be of no use in detecting infested fruits. We found that to provide a good representation of activity it was necessary to use a strategy aimed at random selection of pixels gathered around the global maximum of biospeckle activity localized on the graphical outcome. The potential of biospeckle analysis for identification of highbush blueberry fruits infested by D. suzukii was confirmed.

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Evaluation of Monitoring Traps and Lures for Drosophila suzukii (Diptera: Drosophilidae) in Berry Plantings in Florida

Insects ◽

10.3390/insects10100313 ◽

2019 ◽

Vol 10 (10) ◽

pp. 313 ◽

Cited By ~ 3

Author(s):

Dasia S. Harmon ◽

Muhammad Haseeb ◽

Lambert H. B. Kanga ◽

Oscar E. Liburd

Keyword(s):

Production Systems ◽

Insect Pest ◽

Vaccinium Corymbosum ◽

Economic Damage ◽

Highbush Blueberry ◽

Limited Information ◽

Drosophila Suzukii ◽

Trapping Period ◽

Southern Highbush ◽

Monitoring Traps

Drosophila suzukii (Diptera: Drosophilidae) is an invasive insect pest that was detected in Florida in August 2009 in Hillsborough County. Very limited information is available for berry growers to properly detect and monitor this serious pest in southern highbush blueberry (hybrids of Vaccinium corymbosum L. × V. darrowi Camp), rabbiteye blueberry (Vaccinium virgatum L.), and blackberry (Rubus fruticosus L.) production systems. We compared several D. suzukii traps and lures/baits at two sites in Florida. The traps evaluated included Trécé, Scentry, and a standard homemade cup trap. These traps were compared with various baits and lures, including Trécé lure, Scentry lure, yeast bait, and Suzukii trap, under Florida production systems. Early detection is important to develop an effective monitoring system so management action can be taken before economic damage occurs. Data were recorded as overall trends, as well as in 4–5 trapping periods from early to late season. Overall, the Scentry trap baited with Scentry lure, the Trécé trap baited with Trécé lure + yeast, and the Trécé trap baited with Scentry lure were the best performing traps. Yeast-based traps were also attractive to D. suzukii early in the season, but they did not provide consistent captures as the season progressed. The Scentry trap with yeast bait, the Scentry trap with Scentry lure, the Trécé trap with Trécé lure + yeast bait, and a cup trap with yeast bait caught most of the flies during the first trapping period in 2015 and 2016 in the rabbiteye blueberry. In the southern highbush blueberry, the population of D. suzukii was much lower than in the rabbiteye blueberry planting, and the Scentry trap with Scentry lure captured the highest number of flies during the first trapping period in 2016. In the blackberry, the Scentry trap with Scentry lure numerically had the highest captures during the first trapping period, but this was not significantly different from the cup trap with yeast bait, the Trécé trap baited with Suzukii trap, and the Trécé trap with Trécé lure. Overall, the Scentry trap with Scentry lure was the most consistent trap that captured D. suzukii flies throughout the season in the three production systems—rabbiteye blueberry, southern highbush blueberry, and blackberry. Growers in low pressure systems that are similar to Florida can use the Scentry trap with Scentry lure to monitor D. suzukii populations.

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Diurnal Activity of Drosophila suzukii (Diptera: Drosophilidae) in Highbush Blueberry and Behavioral Response to Irrigation and Application of Insecticides

Environmental Entomology ◽

10.1093/ee/nvx131 ◽

2017 ◽

Vol 46 (5) ◽

pp. 1106-1114 ◽

Cited By ~ 14

Author(s):

Steven Van Timmeren ◽

Logan Horejsi ◽

Shadi Larson ◽

Katherine Spink ◽

Philip Fanning ◽

...

Keyword(s):

Behavioral Response ◽

Highbush Blueberry ◽

Diurnal Activity ◽

Drosophila Suzukii

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Short communication: Laboratory evaluation of nine highbush blueberry cultivars susceptibility to Drosophila suzukii (Matsumura, 1931) in the Southwestern Spain

Spanish Journal of Agricultural Research ◽

10.5424/sjar/2020182-16100 ◽

2020 ◽

Vol 18 (2) ◽

pp. e10SC03

Author(s):

José M. Molina ◽

Laura Avivar ◽

Sergio Pérez-Guerrero

Keyword(s):

Short Communication ◽

Oviposition Preference ◽

Developmental Time ◽

The Other ◽

Laboratory Evaluation ◽

Highbush Blueberry ◽

Drosophila Suzukii ◽

Berry Size ◽

Choice Tests ◽

Southern Highbush

Aim of study: To determine how susceptible the most used Southern highbush blueberry (SHB) cultivars were to the spotted wing Drosophila (SWD), Drosophila suzukii (Matsumura, 1931) (Diptera: Drosophilidae) as well as those recently introduced to Southwestern Spain.Area of study: Southwestern Spain (Huelva province).Material and methods: Nine of the SHB cultivars which were recently introduced in Southwestern Spain and the most used ones were selected: ‘Arana’, ‘Camellia’, ‘Kirra’, ‘Mayra’, ‘Misty’, ‘O'Neal’, ‘Sharpblue’, ‘Star’ and ‘Ventura’. In order to determine how susceptible the cultivars were to SWD, no-choice tests were performed under laboratory conditions. In addition, berry size, berry firmness, ºBrix, and pH were recorded in order to assess what influence these variables had on oviposition preference by SWD.Main results: Mean clutch size and mean number of emerged adults in ‘Star’ were significantly higher than in the other tested cultivars. ‘Mayra’, ‘Camellia’ and ‘Ventura’ received the lower clutch sizes and mean number of emerged adults. Mean developmental time (egg to adult) differed significantly among tested cultivars and were highest in ‘Camellia’ than in the other tested cultivars. Only firmness and pH were correlated with SWD infestation as SWD females tend to oviposit more eggs in softer fruits than in firmer fruits. Results also showed that a higher pH increased the emergence of adults and shortened the egg to adult developmental time.Research highlights: Our results showed significant differences in the susceptibility of SHB to SWD. This information may help design IPM programs and in making recommendations for blueberry crops as planting of low-chill cultivars expands.

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Non-crop habitats serve as a potential source of spotted-wing drosophila (Diptera: Drosophilidae) to adjacent cultivated highbush blueberries (Ericaceae)

The Canadian Entomologist ◽

10.4039/tce.2020.2 ◽

2020 ◽

Vol 152 (4) ◽

pp. 474-489 ◽

Cited By ~ 1

Author(s):

Pablo Urbaneja-Bernat ◽

Dean Polk ◽

Fernando Sanchez-Pedraza ◽

Betty Benrey ◽

Jordano Salamanca ◽

...

Keyword(s):

Field Studies ◽

Vaccinium Corymbosum ◽

Spotted Wing Drosophila ◽

Adult Survival ◽

Highbush Blueberry ◽

Drosophila Suzukii ◽

Post Harvest ◽

Wild Fruits ◽

Wild Blueberries ◽

Highbush Blueberries

AbstractNative to southeast Asia, the spotted-wing drosophila (Drosophila suzukii (Matsumura); Diptera: Drosophilidae) has become a major pest of small fruits in the Americas and Europe. Field studies were conducted over a two-year period (2015–2016) in cultivated highbush blueberry (Vaccinium corymbosum Linnaeus; Ericaceae) fields and adjacent non-crop habitats containing wild blueberries in New Jersey (United States of America). We tracked seasonal changes in D. suzukii adult abundance and fruit infestation throughout the ripening period (June–August). In both years, D. suzukii adult counts post-harvest were generally higher in traps located in non-crop habitats compared with those located in highbush blueberry fields. Wild and cultivated fruits synchronised in maturation, and the numbers of eggs laid and of emerged adults in both fruit types were comparable for most of the season, although sometimes these numbers were higher in wild fruits post-harvest. Overall, immature success (measured as the per cent egg-to-adult survival) was also mostly higher in wild than in cultivated fruits. Altogether, these studies document that non-crop habitats, and wild hosts therein, are used by D. suzukii during fruit ripening and may serve as potential sources of infestation to nearby highbush blueberry fields. Hence, methods that reduce D. suzukii populations in non-crop habitats may help manage this pest in neighbouring highbush blueberries.

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Curative activity contributes to control of spotted-wing drosophila (Diptera: Drosophilidae) and blueberry maggot (Diptera: Tephritidae) in highbush blueberry

The Canadian Entomologist ◽

10.4039/tce.2014.36 ◽

2014 ◽

Vol 147 (1) ◽

pp. 109-117 ◽

Cited By ~ 22

Author(s):

J.C. Wise ◽

R. Vanderpoppen ◽

C. Vandervoort ◽

C. O’Donnell ◽

R. Isaacs

Keyword(s):

Field Experiments ◽

Spotted Wing Drosophila ◽

Highbush Blueberry ◽

Drosophila Suzukii ◽

Rhagoletis Mendax ◽

Drosophila Larvae

AbstractSemi-field experiments were used to compare the curative activity of insecticides on spotted-wing drosophila (Drosophila suzukii (Matsumura) (Diptera: Drosophilidae)) and blueberry maggot (Rhagoletis mendax Curran (Diptera: Tephritidae)) in blueberry fruit. The organophosphate phosmet, the spinosyn spinetoram, and neonicotinoids imidacloprid, acetamiprid, and thiamethoxam showed significant lethality on spotted-wing drosophila and blueberry maggot larvae and eggs, when applied topically to blueberry fruit post-infestation. The pyrethroids fenpropathrin and zeta-cypermethrin showed high levels of post-infestation activity on spotted-wing drosophila larvae or eggs, and indoxacarb showed statistically weaker activity. Curative activity is a previously unrecognised contributor to the overall means by which blueberry growers may achieve control of spotted-wing drosophila and blueberry maggot with the use of insecticides in blueberries.

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ESPI and Digital Speckle Correlation Applied to Inspection of Crevice Corrosion on Aging Aircraft

Research in Nondestructive Evaluation ◽

10.1080/09349849808968135 ◽

1998 ◽

Vol 10 (1) ◽

pp. 63-73 ◽

Cited By ~ 1

Author(s):

F. Jin ◽

F. P. Chiang

Keyword(s):

Crevice Corrosion ◽

Speckle Correlation ◽

Aging Aircraft ◽

Digital Speckle ◽

Digital Speckle Correlation

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Rorschach Characteristics in Adolescents with Systemic Lupus Erythematosus

Rorschachiana Journal of the International Society for the Rorschach ◽

10.1027/1192-5604.28.1.100 ◽

2006 ◽

Vol 28 (1) ◽

pp. 100-118 ◽

Cited By ~ 1

Author(s):

J. Santoantonio ◽

L. Yazigi ◽

E. I. Sato

Keyword(s):

Lupus Erythematosus ◽

Case Control Study ◽

Activity Index ◽

Disease Activity Index ◽

Female Adolescents ◽

Control Group ◽

Intelligence Scale ◽

The Mean ◽

Experimental Group ◽

Control Study

The purpose of this study was to investigate the personality characteristics in adolescents with SLE. The research design is a case-control study by means of the Rorschach Method and the Wechsler Intelligence Scale. Study group: 30 female adolescents with lupus, 12–17 years of age. The SLE Disease Activity Index was administered during the period of psychological evaluation. Control group: 32 nonpatient adolescents were matched for age, sex, and socioeconomic level. In the Wechsler Intelligence Scale the mean IQ of the experimental group was significantly lower than that of the control group (77 and 98, respectively, p < .001). In the Rorschach, the lupus patients showed greater difficulty in interpersonal interactions, although they displayed the resources to process affect and to cope with stressful situations. A positive moderate correlation (p = .069) between the activity index of the disease and the affect constriction proportion of the Rorschach was observed: the higher the SLEDAI score, the lower the capacity to process affect. There is a negative correlation between the activity index of the disease and the IQ (p = .001): with a higher activity index of the disease, less intellectual resources are available.

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