Exploiting the aggregation pheromone of strawberry blossom weevil Anthonomus rubi (Coleoptera: Curculionidae): Part 2. Pest monitoring and control

AbstractThe strawberry blossom weevil (SBW), Anthonomus rubi, is a major pest in strawberry fields throughout Europe. Traps baited with aggregation pheromone are used for pest monitoring. However, a more effective lure is needed. For a number of pests, it has been shown that the attractiveness of a pheromone can be enhanced by host plant volatiles. The goal of this study was to explore floral volatile blends of different strawberry species (Fragaria x ananassa and Fragaria vesca) to identify compounds that might be used to improve the attractiveness of existing lures for SBW. Floral emissions of F. x a. varieties Sonata, Beltran, Korona, and of F. vesca, were collected by both solid-phase microextraction (SPME) and dynamic headspace sampling on Tenax. Analysis by gas chromatography/mass spectrometry showed the floral volatiles of F. x ananassa. and F. vesca were dominated by aromatic compounds and terpenoids, with 4-methoxybenzaldehyde (p-anisaldehyde) and α-muurolene the major compounds produced by the two species, respectively. Multi-dimensional scaling analyses separated the blends of the two species and explained differences between F. vesca genotypes and, to some degree, variation between F. x ananassa varieties In two-choice behavioral tests, SBW preferred odors of flowering strawberry plants to those of non-flowering plants, but weevils did not discriminate between odors from F. x ananassa and F. vesca flowering plants. Adding blends of six synthetic flower volatiles to non-flowering plants of both species increased the preference of SBW for these over the plants alone. When added individually to non-flowering plants, none of the components increased the preference of SBW, indicating a synergistic effect. However, SBW responded to 1,4-dimethoxybenzene, a major component of volatiles from F. viridis, previously found to synergize the attractiveness of the SBW aggregation pheromone in field studies.

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Differences in Orientation Behavior and Female Attraction by Rhyzopertha dominica (Coleoptera: Bostrichidae) in a Homogeneous Resource Patch

Environmental Entomology ◽

10.1093/ee/nvz058 ◽

2019 ◽

Vol 48 (4) ◽

pp. 784-791 ◽

Cited By ~ 2

Author(s):

Erick M G Cordeiro ◽

James F Campbell ◽

Thomas Phillips

Keyword(s):

Aggregation Pheromone ◽

Rhyzopertha Dominica ◽

Movement Direction ◽

Random Pattern ◽

Upward Movement ◽

Monitoring And Control ◽

Male And Female ◽

Wheat Kernel ◽

Movement Orientation ◽

And Control

Abstract The objectives of the study are to understand how naïve beetles disperse after emerging as an adult in a homogeneous resource patch. We compared the movement of adult male and female Rhyzopertha dominica (F.) (Coleoptera: Bostrychidae) using a laboratory and a field-collected strain during the first 2 d after their emergence from the wheat kernel in which they developed. We first asked if naïve male and female beetles show any innate orientation pattern. Males showed an upward orientation bias during the first day, but not in the second, whereas females had a random pattern of orientation in both days of evaluation. No significant differences were observed between the two strains. Given that males release an aggregation pheromone, we next asked if the upward movement of males improved their ability to be found by a naïve female. The presence of a male, whether above or below a newly emerged female, changed the females’ movement direction from random to bias towards the male. In contrast, free-walking males exhibited the same upward movement bias on the first day regardless of the position of the caged male. Only on the second day did male movement change to the opposite direction of the caged male. Here, we report differences between males and females’ movement orientation strategies and their response to males producing aggregation pheromone within the grain mass. Our data may improve our understanding of pheromone attraction and help us to develop better monitoring and control tools.

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Combining 1,4-dimethoxybenzene, the major flower volatile of wild strawberry Fragaria vesca, with the aggregation pheromone of the strawberry blossom weevil Anthonomus rubi improves attraction

Crop Protection ◽

10.1016/j.cropro.2014.06.016 ◽

2014 ◽

Vol 64 ◽

pp. 122-128 ◽

Cited By ~ 11

Author(s):

Atle Wibe ◽

Anna-Karin Borg-Karlson ◽

Jerry Cross ◽

Helena Bichão ◽

Michelle Fountain ◽

...

Keyword(s):

Aggregation Pheromone ◽

Fragaria Vesca ◽

Anthonomus Rubi ◽

Wild Strawberry ◽

Strawberry Blossom Weevil

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Exploiting the aggregation pheromone of strawberry blossom weevil Anthonomus rubi Herbst (Coleoptera: Curculionidae): Part 1. Development of lure and trap

Crop Protection ◽

10.1016/j.cropro.2005.04.002 ◽

2006 ◽

Vol 25 (2) ◽

pp. 144-154 ◽

Cited By ~ 24

Author(s):

Jerry V. Cross ◽

Helen Hesketh ◽

Chantelle N. Jay ◽

David R. Hall ◽

Paul J. Innocenzi ◽

...

Keyword(s):

Aggregation Pheromone ◽

Anthonomus Rubi ◽

Strawberry Blossom Weevil

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Behavioral Response of Leptoglossus zonatus (Heteroptera: Coreidae) to Stimuli Based on Colors and its Aggregation Pheromone

Insects ◽

10.3390/insects9030091 ◽

2018 ◽

Vol 9 (3) ◽

pp. 91 ◽

Cited By ~ 5

Author(s):

Sandra Franco-Archundia ◽

Agustín Gonzaga-Segura ◽

Alfredo Jiménez-Pérez ◽

Víctor Castrejón-Gómez

Keyword(s):

Sexual Behavior ◽

Aggregation Pheromone ◽

Behavioral Response ◽

Hexane Extract ◽

The Other ◽

Monitoring And Control ◽

First Report ◽

Important Pest ◽

And Control ◽

Orange Color

The leaf-footed bug Leptoglossus zonatus (Dallas) (Heteroptera: Coreidae) is an important pest in the Americas. However, no preference of colors, sexual behavior nor aggregation pheromone has been reported, which can be used for detection, monitoring, and control purposes. In the laboratory we tested the attractiveness of white, violet, blue, green, yellow, and orange color to nymphs and adults (mated and unmated) and found that most adults and nymphs were attracted to and remained longer on blue and green colored cards than the other colors tested. We found that couples may remain in copula ≈185 min and mate ≈20 times in a 60 d period with a similar number of matings during the scotophase and the photophase. Sexual behavior consists of six patterns: grooming, abdomen movement, antenna movement, antennation, mounting, and mating. In a Y-tube olfactometer, 80 and 62.5% of the adults tested were attracted to a hexane-extract of the volatiles released by 40 males and 40 females, respectively. This is the first report of the biological evidence of an aggregation pheromone in this bug.

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MONITORING AND CONTROL OF THE PEST TUTA ABSOLUTA (MEYRICK) IN TOMATO CROPS UNDER HIGH PLASTIC TUNNELS

Current Trends in Natural Sciences ◽

10.47068/ctns.2021.v10i20.012 ◽

2021 ◽

Vol 10 (20) ◽

pp. 85-92

Author(s):

Simona Hogea

Keyword(s):

Tuta Absoluta ◽

Pheromone Traps ◽

Monitoring And Control ◽

Pest Population ◽

Pest Monitoring ◽

Yield And Quality ◽

Major Pest ◽

Crop Cycle ◽

And Control ◽

High Plastic

Tuta absoluta – tomato leafminer (Meyrick) (Lepidoptera: Gelechiidae) is a major pest of tomato crops in protected areas, which attacks both foliage and fruit, in all phases of plant growth. Its invasion has led to yield and quality decrease, increased costs to control and high dependence on chemical insecticides. With pheromone traps it is possible to monitor and reduce the density of the pest population. The experience was established in 2020, at a farmer in Dobreni village (Giurgiu county). In the first and second crop cycle, the population of the pest Tuta absoluta was monitored, by placing Delta pheromone traps in tomato crops. The Sahmat F1 tomato hybrid was planted in both crop cycles. Pest monitoring was performed weekly, by changing the adhesive plates with pheromones from Delta traps, on the dates: 03.06, 10.06, 17.06, 24.06, 01.07, 08.07, 15.07, 22.07 in the first cycle of crop and on the dates: 29.07, 05.08, 12.08, 19.08, 02.09 , 09.09, 16.09, 23.09 in the second cycle. The appearance and evolution of the attack were recorded in the both crop cycles and its influence on production was established.

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Computers for data, control and simulation

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100106661 ◽

1988 ◽

Vol 46 ◽

pp. 920-921

Author(s):

David C. Joy

Keyword(s):

Personal Computers ◽

Monitoring And Control ◽

Data Logging ◽

Data Logger ◽

Operational Conditions ◽

Data Control ◽

The Many ◽

And Control

Personal computers (PCs) are a powerful resource in the EM Laboratory, both as a means of automating the monitoring and control of microscopes, and as a tool for quantifying the interpretation of data. Not only is a PC more versatile than a piece of dedicated data logging equipment, but it is also substantially cheaper. In this tutorial the practical principles of using a PC for these types of activities will be discussed.The PC can form the basis of a system to measure, display, record and store the many parameters which characterize the operational conditions of the EM. In this mode it is operating as a data logger. The necessary first step is to find a suitable source from which to measure each of the items of interest. It is usually possible to do this without having to make permanent corrections or modifications to the EM.

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