scholarly journals Rapid and low-cost insect detection for analysing species trapped on yellow sticky traps

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Elias Böckmann ◽  
Alexander Pfaff ◽  
Michael Schirrmann ◽  
Michael Pflanz
Keyword(s):  
Natural Enemies ◽  
Low Cost ◽  
Model Performance ◽  
Trialeurodes Vaporariorum ◽  
Time Saving ◽  
Sticky Traps ◽  
Visual Words ◽  
Species Mixture ◽  
Model Training ◽  
Yellow Sticky Traps

AbstractWhile insect monitoring is a prerequisite for precise decision-making regarding integrated pest management (IPM), it is time- and cost-intensive. Low-cost, time-saving and easy-to-operate tools for automated monitoring will therefore play a key role in increased acceptance and application of IPM in practice. In this study, we tested the differentiation of two whitefly species and their natural enemies trapped on yellow sticky traps (YSTs) via image processing approaches under practical conditions. Using the bag of visual words (BoVW) algorithm, accurate differentiation between both natural enemies and the Trialeurodes vaporariorum and Bemisia tabaci species was possible, whereas the procedure for B. tabaci could not be used to differentiate this species from T. vaporariorum. The decay of species was considered using fresh and aged catches of all the species on the YSTs, and different pooling scenarios were applied to enhance model performance. The best performance was reached when fresh and aged individuals were used together and the whitefly species were pooled into one category for model training. With an independent dataset consisting of photos from the YSTs that were placed in greenhouses and consequently with a naturally occurring species mixture as the background, a differentiation rate of more than 85% was reached for natural enemies and whiteflies.

Natural Enemy Community Composition and Impact on Brown Marmorated Stink Bug (Hemiptera: Pentatomidae) Eggs in Minnesota Apple Orchards

2020 ◽  
Vol 49 (2) ◽  
pp. 324-333 ◽  
Author(s):  
Hailey N Shanovich ◽  
Brian H Aukema ◽  
Robert L Koch
Keyword(s):  
Natural Enemies ◽  
Natural Enemy ◽  
Management Practices ◽  
Stink Bug ◽  
Apple Orchards ◽  
Sticky Traps ◽  
Predator Abundance ◽  
Polyphagous Insect ◽  
The Impact ◽  
Yellow Sticky Traps

Abstract Halyomorpha halys is an invasive, polyphagous insect that feeds on many major crops, including apple. Statewide monitoring in Minnesota has shown continued increase of H. halys populations and occurrence of this pest in apple orchards. Potential arthropod natural enemies of H. halys and other pests have not been studied in Minnesota apple orchards. The purpose of this study was to characterize the composition of natural enemy communities; compare their abundances, richness and diversities between apple cultivars using different sampling methods; and assess the impact of natural enemies on sentinel eggs of H. halys in Minnesota apple orchards. Sampling occurred during the summers of 2017 and 2018 on Zestar! and Honeycrisp cultivars in four different apple orchards. In vacuum samples, arachnids, neuropterans, and coccinellids had the highest relative abundances. On yellow sticky traps, anthocorids were the most abundant. The total predator abundance differed between the cultivars sampled across years, with more predators found on Zestar! compared with Honeycrisp. No differences were observed in richness or diversity between cultivars with the exception of yellow sticky traps in 2017, which showed a greater diversity of predators in Zestar!. Despite the abundance of natural enemies sampled, sentinel egg masses deployed in the orchards each summer suffered on average <2% predation and no parasitism across years. Knowledge of differences in predator abundance between cultivars could inform management decisions; however, with current management practices, the potential for biological control of H. halys in conventional apple orchards appears low.

Protocol for semi‐automatic identification of whiteflies Bemisia tabaci and Trialeurodes vaporariorum on yellow sticky traps

2019 ◽  
Vol 143 (6) ◽  
pp. 652-658
Author(s):  
Rob Moerkens ◽  
Nathalie Brenard ◽  
Lien Bosmans ◽  
Eva Reybroeck ◽  
Dirk Janssen ◽  
...  
Keyword(s):  
Bemisia Tabaci ◽  
Trialeurodes Vaporariorum ◽  
Automatic Identification ◽  
Sticky Traps ◽  
Yellow Sticky Traps

scholarly journals Fewer Whiteflies Found on CO2-enriched Greenhouse Tomatoes with High C: N Ratios

HortScience ◽  
1992 ◽  
Vol 27 (10) ◽  
pp. 1079-1080 ◽  
Author(s):  
Kim E. Tripp ◽  
William K. Kroen ◽  
Mary M. Peet ◽  
Daniel H. Willits
Keyword(s):  
Carbon Dioxide ◽  
Lycopersicon Esculentum ◽  
Population Growth ◽  
Trialeurodes Vaporariorum ◽  
Carbon Dioxide Enrichment ◽  
Plant Composition ◽  
Sticky Traps ◽  
The Mean ◽  
Greenhouse Tomatoes ◽  
Yellow Sticky Traps

Eight tomato (Lycopersicon esculentum) cultivars were grown for 16 weeks in greenhouses enriched for an average of 8.1 hours daily to 1000 μl CO /liter of air or in greenhouses maintained at ambient CO. Carbon dioxide enrichment significantly decreased the mean number of greenhouse whiteflies [Trialeurodes vaporariorum (Westward), Homoptera: Aleyrodidae] as measured by counts from commercial yellow sticky traps. The number of whiteflies present was negatively correlated with both seasonal foliar C: N ratio and percent C but positively correlated with percent N in the foliage. Thus, CO enrichment apparently alters plant composition in such a way as to reduce significantly the population growth of greenhouse whiteflies.

scholarly journals Reduced translucency and the addition of black patterns increase the catch of the greenhouse whitefly, Trialeurodes vaporariorum, on yellow sticky traps

PLoS ONE ◽  
2018 ◽  
Vol 13 (2) ◽  
pp. e0193064 ◽  
Author(s):  
Clare Sampson ◽  
Anca D. Covaci ◽  
James G. C. Hamilton ◽  
Nayem Hassan ◽  
Shakir Al-Zaidi ◽  
...  
Keyword(s):  
Trialeurodes Vaporariorum ◽  
Greenhouse Whitefly ◽  
Sticky Traps ◽  
Yellow Sticky Traps

scholarly journals Publisher Correction: Rapid and low-cost insect detection for analysing species trapped on yellow sticky traps

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Elias Böckmann ◽  
Alexander Pfaff ◽  
Michael Schirrmann ◽  
Michael Pflanz
Keyword(s):  
Low Cost ◽  
Sticky Traps ◽  
Yellow Sticky Traps

An amendment to this paper has been published and can be accessed via a link at the top of the paper.

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