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

Insects ◽  
2018 ◽  
Vol 9 (3) ◽  
pp. 91 ◽  
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.

scholarly journals Eficiência da Armadilha “R. Bianco” para Captura do Percevejo Leptoglossus zonatus Dallas (Hemiptera: Coreidae), na Cultura do Milho

2016 ◽  
Vol 9 (2) ◽  
pp. 84-88 ◽  
Author(s):  
Marliton Rocha Barreto ◽  
Ledonir Geovani Da Silva
Keyword(s):  
Attraction Effect ◽  
Monitoring And Control ◽  
The Third ◽  
Important Pest ◽  
Volume Production ◽  
Insect Attraction ◽  
And Control

Resumo. O milho é o cereal com maior índice de consumo, tanto industrializado como in natura, atualmente. É o grão com maior volume de produção, sendo o Brasil o terceiro maior produtor, dessa maneira, faz-se necessário uma atenção especial voltada ao monitoramento e controle de certos invasores que comprometem sua produtividade. Dentre as pragas que podem afetar essa produtividade destacamos os percevejos (Hemiptera: Heteroptera), mais especificamente o percevejo-do-milho (Leptoglossus zonatus Dallas), que tem se mostrado uma importante praga para a cultura do milho. O presente trabalho teve por objetivo avaliar a eficiência de armadilhas caseiras do tipo “R. Bianco” na captura desse percevejo. Os experimentos foram conduzidos no Sitio Nossa Senhora Aparecida, localizado no município de Sinop, MT. As armadilhas foram divididas em 10 abertas e 10 fechadas e avaliadas com e sem isca por 20 dias. O delineamento utilizado foi o inteiramente casualizado (DIC) em esquema fatorial 2x2x2 com oito tratamentos e cinco repetições. As armadilhas sem iscas demonstraram maior eficiência, apresentando média superior na captura do percevejo em relação às armadilhas com isca. As armadilhas fechadas, em comparação com as abertas, demonstraram maior eficácia na retenção do inseto. O efeito da borda foi pouco representativo nesse experimento. Portanto, a presença da isca não influenciou na atração do inseto e os tratamentos submetidos ao teste sem isca apresentaram maiores quantidades e maior eficiência na captura de insetos. Levando a crer o efeito de atração do sal pelo percevejo e a localização de cada armadilha pouco influenciou na captura dos insetos.Trap Efficiency “R. Bianco” for Capture the insect Leptoglossus zonatus Dallas (Hemiptera: Coreidae) in Maize CropAbstract. Maize is the cereal with the highest consumption in both industrialized as fresh nowadays. It is the grain with higher volume production, Brazil is the third largest producer, need special attention focused on the monitoring and control of invaders who risk their productivity. Among the pests that can affect the productivity highlight the insects (Hemiptera: Heteroptera), more specifically the bedbugs corn (Leptoglossus zonatus Dallas), which has been an important pest for corn crops. Thus, this study aimed to evaluate the effectiveness of homemade traps R. Bianco in control of this insect. The experiments were conducted in Sitio Nossa Senhora Aparecida, in the municipality of Sinop, MT. Traps were divided into 10 open and 10 closed which were evaluated with and without baits by 20 days. The design was completely randomized (DIC) in a 2x2x2 factorial with eight treatments and five repetitions. Traps without baits showed greater efficiency, with an average higher in catching the bugs regarding the traps with bait. The trap closed as compared with the open, demonstrated greater efficacy in retaining the insect. The effect of edge was little representative in this experiment. Therefore, the presence of bait did not influence the insect attraction and treatments submitted to the bait without test showed higher quantities and more efficient insect capture. Leading us to believe the attraction effect of salt by bedbug and the location of each trap had little influence in the capture of insects.

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

2019 ◽  
Vol 48 (4) ◽  
pp. 784-791 ◽  
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.

scholarly journals Spasmolytic Flavonoids from Syzygium samarangense (Blume) Merr. & L.M. Perry

2005 ◽  
Vol 60 (1-2) ◽  
pp. 67-71 ◽  
Author(s):  
Evangeline C. Amor ◽  
Irene M. Villaseñor ◽  
M. Nabeel Ghayur ◽  
Anwar H. Gilani ◽  
M. Iqbal Choudhary
Keyword(s):  
Smooth Muscle ◽  
Hexane Extract ◽  
The Other ◽  
Spasmolytic Activity ◽  
First Report ◽  
Rabbit Jejunum ◽  
Dose Dependent

The hexane extract of Syzygium samarangense (Ss.Hex) dose-dependently (10D1000 μg/ ml) relaxed the spontaneously contracting isolated rabbit jejunum. Four rare C-methylated flavonoids with a chalcone and a flavanone skeleton were isolated from Ss.Hex and were subsequently tested for spasmolytic activity. All flavonoids, identified as 2′-hydroxy-4′,6′- dimethoxy-3′-methylchalcone (1), 2′,4′-dihydroxy-6′-methoxy-3′,5′-dimethylchalcone (2), 2′,4′-dihydroxy-6′-methoxy-3′-methylchalcone (3), and 7-hydroxy-5-methoxy-6,8-dimethylflavanone (4), showed dose-dependent spasmolytic activity in the rabbit jejunum with IC50 values of 148.3 ± 69.4, 77.2 ± 43.5, 142.4 ± 58.6 and 178.5 ± 37.5 μg/ml (mean ± SEM), respectively. The dihydrochalcone derivative of compound 1, 2′-hydroxy-4′,6′-dimethoxy-3′- methyldihydrochalcone (5), when tested for spasmolytic activity, did not significantly relax the smooth muscle relative to the other compounds. Verapamil, a standard spasmolytic, has an IC50 value of 0.16 ± 0.04 μg/ml. This is the first report of the relaxant activity of chalcones, specifically of compounds 1-3.

Study on Monitoring and Control System of Vehicle-Mounted Rig Based on CAN Bus

2013 ◽  
Vol 397-400 ◽  
pp. 1655-1660 ◽  
Author(s):  
Dong Fan ◽  
Yin Sheng Weng ◽  
Hong Liang Tian
Keyword(s):  
Control System ◽  
Real Time ◽  
Data Transmission ◽  
Can Bus ◽  
The Other ◽  
Monitoring And Control ◽  
Monitoring And Control System ◽  
Reliable Transmission ◽  
Program Flow ◽  
And Control

The monitoring and control system based on CAN bus was designed in order to implement the data reliable transmission between all nodes in the control system of the vehicle-mounted rig. Firstly, the hardware structure of the monitoring system was designed in the paper, and two CAN network was built, which one CAN network used CANopen protocol and the other used J1939 protocol and CAN2.0B protocol, that it saved the resource of hardware and software. Secondly, all CAN protocols , program flow chart and software with Labview were designed in detail. The application results of the actual engineering showed that it realized the function of data transmission with each console and real-time monitoring.

Air Emissions Measurements in Environmental Monitoring of IPPC Plants

2013 ◽  
Vol 3 (1) ◽  
pp. 28-38 ◽  
Author(s):  
Gaetano Battistella ◽  
Giuseppe Di Marco
Keyword(s):  
Research And Development ◽  
Environmental Monitoring ◽  
National Level ◽  
The Other ◽  
Air Emissions ◽  
Monitoring And Control ◽  
New Techniques ◽  
Control Procedures ◽  
New Methodologies ◽  
And Control

This paper describes some air emissions measurements items coming from the application of the authorization decrees licensing IPPC Plants in Italy at national level in order to respect authorized monitoring and control procedures. New technical situations are analyzed as they occur in plants operation, after release of IPPC operational licensees, as in these Plants where pollution is now under control and where monitoring and reporting must be now properly developed. These items, on the other side, can give also new opportunities for research and development in order to find new methodologies and to develop new studies in order to reach results able to adopted appropriate measurements solutions. In air emissions measurements there is room for improvement by means of new techniques – as technologies and managerial procedures – that can help to solve these problems in order to support better application of IPPC permits.

If You Can’t See It You Can’t Detect It

2008 ◽  
Author(s):  
Edward J. Farmer
Keyword(s):  
Phase Change ◽  
Process Monitoring ◽  
Flow Measurement ◽  
The Other ◽  
Transient Phase ◽  
Monitoring And Control ◽  
Flow Meter ◽  
Measurement Issues ◽  
Process Monitoring And Control ◽  
And Control

Fundamental to all process monitoring and control is observability, the quality that the state of a system (e.g., a pipeline leaking or not leaking) is actually discernable from the measurements available. Here are four examples of how measurement issues obliterated productive monitoring. In one example a transient phase change in a process loop results in gross mis-measurement at one end. A second example illustrates that buying a flow meter does not always result in flow measurement. A third example shows a pipeline in which the readings at one end show absolutely no relationship to the other. The fourth example shows a pipeline that appears to be leaking at one end but fine at the other. The concept of observability provides some structure for thinking through these situations and developing solutions.

scholarly journals Surveillance and Security for Correctional Facilities

2020 ◽  
pp. 283-286
Author(s):  
Abey Abraham ◽  
Vijith V ◽  
Rohith V V ◽  
Pathur Nisha
Keyword(s):  
Time Difference ◽  
The Other ◽  
Medical Services ◽  
Correctional Facilities ◽  
Monitoring And Control ◽  
Rf Receiver ◽  
Rf Transmitter ◽  
And Control ◽  
To Receive

Prisoners are segregated in different wards. But it is the tendencies of a few bad elements to leave the barracks on the pretext of availing medical services, canteen services and telephone services etc., and going to some other barracks to receive or distribute prohibited articles. To overcome this situation, a system is proposed for the surveillance of the prisoners, using biometric sensors for monitoring purpose. This project overcomes the limitations of the existing systems of correctional facilities. In this proposed method the finger prints of the prisoners are taken as input and the other parameters that apply are the source and destination along with the time difference. Thus, the proposed system will make prisons more secure. This work provides more secure and efficient way to eliminate the wrong traversals and to inform the officials about it when this happens. The biometric sensor along with LED display, the alarm, RF receiver, RF transmitter is integrated with the PIC microcontroller. The fingerprint module takes the input and identifies the prisoner and then displays the details in the LED screen. Source controller RF and the destination RF interact, as soon as the prisoner checks in, the timer starts to function and counts until prisoner reaches. If the prisoner does not reach before the average time taken, then the alarm goes on and the official can know along with the prisoner ID on the screen. Thus the proposed system gives a better monitoring and control over the prisoners.

scholarly journals Adult activity patterns of Cnephasia jactatana Walker (Lepidoptera Tortricidae)

2002 ◽  
Vol 55 ◽  
pp. 374-379 ◽  
Author(s):  
A. Jimenez-Perez ◽  
Q. Wang ◽  
N.P. Markwick
Keyword(s):  
Activity Patterns ◽  
Plant Tissues ◽  
Control Methods ◽  
Male Courtship ◽  
Monitoring And Control ◽  
Courtship Display ◽  
Cnephasia Jactatana ◽  
Important Pest ◽  
Courtship Activity ◽  
And Control

The New Zealand leafroller Cnephasia jactatana Walker is an important pest of kiwifruit Larvae of this species feed on dead or live plant tissues and damage the surface of the fruit or burrow deep into the flesh To provide important information for the development of adult monitoring and control methods we studied circadian rhythms and lifespan activity patterns of C jactatana The investigation was carried out at 20 2C 75 10 RH and a photoperiod of 168 h lightdark Females needed a significantly longer time to complete their life cycle than males Most moths emerged during the photophase On a circadian basis courtship activity peaked 3 and 6 h into scotophase; mating peaked 46 h into scotophase and most ovipositions occurred in the first 2 h of scotophase In the lifespan of this species male courtship display started 2 days after emergence and peaked 1 day later; mating and oviposition peaked 3 and 7 days after emergence respectively Most females initiated oviposition 1 day after mating

U. S. Navy Ship Service Gas Turbine Generator Thermocouple Logic Enhancements to Improve Reliability

2014 ◽  
Author(s):  
John Viercinski ◽  
Matthew Hoffman ◽  
Ivan Pineiro ◽  
Dennis Russom ◽  
Helen Kozuhowski ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Temperature Monitoring ◽  
The Other ◽  
Monitoring And Control ◽  
Control Logic ◽  
Turbine Generator ◽  
The Individual ◽  
And Control ◽  
Improve Reliability

The U. S. Navy uses Rolls-Royce gas turbines for ship service power on the DDG-51 class destroyer and the CG-47 class cruiser. Both engines have duplex thermocouples (T/Cs) and redundant T/C harnesses for turbine temperature monitoring and control. One harness provides an average of all the installed T/Cs, while the other provides the full authority digital control (FADC) with an individual signal from each. The legacy FADC algorithm allows up to four T/Cs to be out of average on the individual harness. Any additional T/C failures will cause the control to ignore the entire individual harness and rely on the averaging harness alone. This logic has inadvertently led to multiple over-temp conditions and subsequent engine removals. A change to control logic has been developed that aims to prevent these over-temp scenarios and is currently being introduced to the fleet. This paper will discuss in depth the cause of the over-temp, the examination of the control logic and the correction that is designed to prevent it from recurring.

scholarly journals INCREASED ATTRACTION OF ORYCTES RHINOCEROS AGGREGATION PHEROMONE, ETHYL 4-METHYLOCTANOATE, WITH COCONUT WOOD

CORD ◽  
1999 ◽  
Vol 15 (02) ◽  
pp. 34
Author(s):  
Ambrosio Raul R. Alfiler
Keyword(s):  
Aggregation Pheromone ◽  
The Philippines ◽  
Coconut Palm ◽  
Research Center ◽  
Pheromone Traps ◽  
Synergistic Activity ◽  
Beetle Population ◽  
Oryctes Rhinoceros ◽  
Important Pest ◽  
And Control

Trapping experiments at the Zamboanga Research Center of the Philippine Coconut Authority provided evidence of the resultant synergistic activity of the combination of the Oryctes rhinoceros aggregation pheromone, Ethyl 4-methyloctanoate, and old coconut wood in pheromone traps. Traps containing both old coconut wood and aggregation pheromone caught significantly more rhinoceros beetles than traps containing the pheromone or old coconut wood alone. The use of selective trapping using the aggregation pheromone presents a new option for the reduction of the beetle population in the field and control of this important pest of coconut palm in the Philippines.

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