scholarly journals Insect Trap Catch Improvement with Light-Emitting Diode Modification

HortScience ◽  
2004 ◽  
Vol 39 (4) ◽  
pp. 871D-872
Author(s):  
Chang-chi Chu* ◽  
Kai Umeda ◽  
Tian-Ye Chen ◽  
Alvin M. Simmons ◽  
Thomas H. Henneberry
Keyword(s):  
Insect Pests ◽  
Light Emitting Diode ◽  
Western Flower Thrips ◽  
Trialeurodes Vaporariorum ◽  
Greenhouse Whitefly ◽  
Light Emitting ◽  
Control Programs ◽  
Fungus Gnats ◽  
Green Led ◽  
Biotype B

Insect traps are vital component of many entomological programs for detection and monitoring of insect populations. We equipped yellow (YC), blue (BC) sticky card (BC) with 530 nm lime green (LED-YC) and 470 nm blue (LED-BC) light-emitting diodes, respectively that increased trap catches of several insect pests. The LED-YC traps caught 1.3, 1.4, 1.8, and 4.8 times more adult greenhouse whitefly Trialeurodes vaporariorum (Westwood), sweetpotato whitefly Bemisia tabaci (Gennadius) biotype B, cotton aphids Gossypium hirsutum (L.), and fungus gnats Bradysia coprophila (Lintner), respectively, compared with standard YC traps. The LED-YC traps did not catch more Eretmocerus spp. than the standard YC traps. Eretmocerus spp. are important B. tabaci parasitoids used in greenhouse biological control programs. For whitefly control in greenhouse the 530 nm lime green LED equipped plastic cup trap designed by Chu et al. (2003) is the better choice than LED-YC trap because it catches few Eretmocerus spp. and Encarsia spp. whitefly parasitoids released for B. tabaci nymph control. The LED-BC traps caught 2.0-2.5 times more adult western flower thrips Franklinella occidentalis (Pergande) compared with the standard BC traps.

scholarly journals Chemical and Non-Chemical Solutions for Managing Twospotted Spider Mite, Western Tarnished Plant Bug, and Other Arthropod Pests in Strawberries

2018 ◽  
Author(s):  
Surendra K. Dara ◽  
David Peck ◽  
Dave Murray
Keyword(s):  
Spider Mite ◽  
Insect Pests ◽  
Western Flower Thrips ◽  
Trialeurodes Vaporariorum ◽  
Twospotted Spider Mite ◽  
Greenhouse Whitefly ◽  
Tarnished Plant Bug ◽  
Microbial Pesticides ◽  
Arthropod Pests ◽  
Twospotted Spider

The twospotted spider mite, Tetranychus urticae and the western tarnished plant bug, Lygus hesperus are major arthropod pests of strawberries in California.  Other important insect pests include the greenhouse whitefly, Trialeurodes vaporariorum and the western flower thrips, Frankliella occidentalis.  Chemical pesticides play a major role in managing these pests, but not without the associated risk of pesticide resistance and environmental safety.  Two field studies were conducted in Santa Maria to evaluate the potential of botanical and microbial pesticides in the integrated pest management (IPM) of strawberry.  Chemical, botanical, and microbial pesticides were evaluated against T. urticae in a small plot study in 2013 and against L. hesperus and other insect pests in a large plot study in 2015 in commercial strawberry fields.  Bug vacuums were also used in the 2015 study.  Results demonstrated that non-chemical alternatives can play an important role in strawberry IPM.

scholarly journals A Greenhouse Test to Explore and Evaluate Light-Emitting Diode (LED) Insect Traps in the Monitoring and Control of Trialeurodes vaporariorum

Insects ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 94 ◽  
Author(s):  
Jihong Zhang ◽  
Huyin Li ◽  
Maorong Liu ◽  
Huan Zhang ◽  
Hai Sun ◽  
...  
Keyword(s):  
Population Control ◽  
Light Emitting Diode ◽  
Weather Conditions ◽  
Trialeurodes Vaporariorum ◽  
Field Application ◽  
Mass Trapping ◽  
Monitoring And Control ◽  
Greenhouse Whitefly ◽  
Light Emitting ◽  
And Control

Population control of small sucking insects has been challenging, and alternative control methods are constantly being sought. Visual traps have long been used to monitor and control pests. Colored sticky cards are widely used for diurnal pests, but their effects are influenced by environmental light conditions. Artificial light traps are mostly used for nocturnal pests. Here, we explored and evaluated light-emitting diode (LED) traps for the monitoring and control of small diurnal sucking insects using greenhouse tests targeting the greenhouse whitefly Trialeurodes vaporariorum. We tested the trapping efficacy of the LED water pan trap, assessed the most attractive LED light and analyzed its efficacy under different weather conditions. The results showed that the LED water pan trap was too inefficient to be useful. Green LEDs were more attractive than yellow LEDs, UV LEDs and green-UV combinations. Regardless of sunny or cloudy conditions, the green LED trap caught more than twice the number of whiteflies than the yellow sticky card alone under summer shading conditions. Our study suggests that LED traps have a significant field application value in whitefly mass trapping and may also be efficient for other diurnal insects. The design of LED traps specific for diurnal insects is discussed.

scholarly journals Vibrational communication and mating behavior of the greenhouse whitefly Trialeurodes vaporariorum (Westwood) (Hemiptera: Aleyrodidae)

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Valeria Fattoruso ◽  
Gianfranco Anfora ◽  
Valerio Mazzoni
Keyword(s):  
Mating Behavior ◽  
Insect Pests ◽  
Trialeurodes Vaporariorum ◽  
Vibrational Communication ◽  
Greenhouse Whitefly ◽  
Behavioral Manipulation ◽  
Vibrational Signals ◽  
Intraspecific Communication ◽  
Behavioral Transition ◽  
First Time

AbstractThe greenhouse whitefly (GW), Trialeurodes vaporariorum is considered one of the most harmful insect pests in greenhouses worldwide. The GW mating behavior has been partially investigated and its vibrational communication is only in part known. A deeper knowledge of its intraspecific communication is required to evaluate the applicability of control methods based on techniques of behavioral manipulation. In this study, for the first time, we provided a detailed ethogram of the GW mating behavior and we characterized the vibrational signals emitted during the process of pair formation. We characterized two types of male vibrational emissions (“chirp” and “pulses”), differently arranged according to the behavioral stage to form stage-specific signals, and a previously undescribed Male Rivalry Signal. We recorded and characterized two new female signals: The Female Responding Signal and the Female Rejective Signal. The mating behavior of GW can be divided into six different stages that we named “call”, “alternated duet”, “courtship”, “overlapped duet”, “mating”, “failed mating attempt”. The analysis performed with the Markovian behavioral transition matrix showed that the “courtship” is the key stage in which male exhibits its quality and can lead to the “overlapped duet” stage. The latter is strictly associated to the female acceptance and therefore it plays a crucial role to achieve mating success. Based on our findings, we consider the use of vibrational playbacks interfering with GW mating communication a promising option for pest control in greenhouses. We discuss the possibility to start a research program of behavioral manipulation to control the populations of GW.

scholarly journals Phototactic Response of the Oriental Armyworm, Mythimna separata (Lepidoptera: Noctuidae), to Light-Emitting Diode Lights of Different Wavelengths

2019 ◽  
Author(s):  
Kil-Nam Kim ◽  
Hye-Sung Song ◽  
Ryong-Jin Choe ◽  
Zhi-Juan Huang ◽  
Qiu-Ying Huang ◽  
...  
Keyword(s):  
Light Emitting Diode ◽  
Insect Pest ◽  
Light Trap ◽  
Mythimna Separata ◽  
Light Emitting ◽  
Led Light ◽  
Phototactic Response ◽  
Green Led ◽  
Oriental Armyworm ◽  
Led Lights

Recently, light traps using light-emitting diode (LED) lights have been applied to monitor or control insect pests. The oriental armyworm, Mythimna separata Walker, is an important insect pest that has caused damage to several cereal crops, including corn, wheat and rice. The present study aims to seek out a sensitive wavelength causing high phototactic response in M. separata. The study evaluated the phototactic responses of M. separata moths to several LED lights of different wavelengths and luminance intensities under laboratory condition. Results showed that green (520 nm) LED light resulted in significant phototactic response of M. separata moths compared to LED lights of other wavelengths. Additionally, the highest attraction rate of the moths to green LED light appeared in luminance intensity group of 200 lux compared to the other intensities groups. Experiments under optimum conditions based on the above experiments revealed that the green LED light exhibited the strongest attraction rate (64.44%) among all experimental groups. An experiment performed in a net cage also showed that green LED light resulted in the highest phototactic response of M. separata moths, 1.7 times more than a commercial black light used as control. These findings clearly demonstrate that M. separata moths have a high sensitivity to the green LED light. Therefore, a light trap equipped with green LED light could be useful for monitoring and controlling M. separata moths.

scholarly journals Internal quantum efficiency improvement of InGaN/GaN multiple quantum well green light-emitting diodes

2016 ◽  
Vol 24 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Q. Zhou ◽  
M. Xu ◽  
H. Wang
Keyword(s):  
Quantum Well ◽  
Quantum Efficiency ◽  
Light Emitting Diode ◽  
Internal Quantum Efficiency ◽  
Multiple Quantum Well ◽  
Visible Light Communication ◽  
Multiple Quantum ◽  
Internal Electric Field ◽  
Light Emitting ◽  
Green Led

In recent years, GaN-based light-emitting diode (LED) has been widely used in various applications, such as RGB lighting system, full-colour display and visible-light communication. However, the internal quantum efficiency (IQE) of green LEDs is significantly lower than that of other visible spectrum LED. This phenomenon is called “green gap”. This paper briefly describes the physical mechanism of the low IQE for InGaN/GaN multiple quantum well (MQW) green LED at first. The IQE of green LED is limited by the defects and the internal electric field in MQW. Subsequently, we discuss the recent progress in improving the IQE of green LED in detail. These strategies can be divided into two categories. Some of these methods were proposed to enhance crystal quality of InGaN/GaN MQW with high In composition and low density of defects by modifying the growth conditions. Other methods focused on increasing electron-hole wave function overlap by eliminating the polarization effect.

scholarly journals First record of Coenosia attenuata Stein, 1903 (Diptera: Muscidae) in Venezuela

2017 ◽  
pp. 223-226
Author(s):  
Yohan Solano-Rojas ◽  
Adrián Pont ◽  
José De Freitas ◽  
Gustavo Moros ◽  
Yaritza Goyo
Keyword(s):  
Capsicum Annuum ◽  
Lactuca Sativa ◽  
Insect Pests ◽  
First Record ◽  
Trialeurodes Vaporariorum ◽  
Gerbera Jamesonii ◽  
Capsicum Annuum L ◽  
Lactuca Sativa L ◽  
Fungus Gnats ◽  
Coenosia Attenuata

La mosca tigra, Coenosia attenuata Stein, 1903 es un importante depredador de insectos pequeños como moscas blancas, moscas del mantillo, minadores, y otros pequeños hemípteros y lepidópteros. El objetivo de esta investigación es reportar la presencia de esta especie por primera vez en Venezuela, donde ha sido observada en casas de cultivo ubicadas en el estado Miranda, depredando adultos de Trialeurodes vaporariorum (Westwood, 1856) y de moscas de los géneros Bradysia Winnertz, 1867 y Liriomyza Mik, 1894 sobre crisantemo (Chrysanthemun sp.), gerbera (Gerbera jamesonii Bolus y Hook), lechuga (Lactuca sativa L.) y pimentón (Capsicum annuum L.). La presencia de la mosca tigra en Venezuela subraya la necesidad de investigaciones sobre su uso potencial como un agente de biocontrol de insectos plaga. The tiger-fly Coenosia attenuata Stein, 1903 is an important predator of small insects such as whiteflies, fungus gnats, leafminers, and other small Hemiptera and Lepidopters. The aim of this research is to report the occurrence of this species for first time in Venezuela, where it has been observed in greenhouses located in Miranda state, predating adults of Trialeurodes vaporariorum (Westwood, 1856) and of the fly genera Bradysia Winnertz, 1867 and Liriomyza Mik, 1894 on chrysanthemum (Chrysanthemum sp.), gerbera (Gerbera jamesonii Bolus ex Hook), lettuce (Lactuca sativa L.) and pepper (Capsicum annuum L.). The occurrence of the tiger-fly in Venezuela underlines the necessity for researches into its potential use as a biocontrol agent of insect pests.

LIME GREEN LIGHT-EMITTING DIODE EQUIPPED YELLOW STICKY CARD TRAPS FOR MONITORING WHITEFLIES, APHIDS AND FUNGUS GNATS IN GREENHOUSES

2004 ◽  
Vol 11 (2) ◽  
pp. 125-133 ◽  
Author(s):  
Chang-chi Chu ◽  
Alvin M. Simmons ◽  
Tian-Ye Chen ◽  
Patrick J. Alexander ◽  
T. J. Henneberry
Keyword(s):  
Light Emitting Diode ◽  
Green Light ◽  
Light Emitting ◽  
Fungus Gnats
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