A Controlled-Interval Light Trap for Microlepidoptera

1958 ◽  
Vol 90 (10) ◽  
pp. 617-622 ◽  
Author(s):  
D. G. Harcourt ◽  
L. M. Cass
Keyword(s):  
Light Trap ◽  
Light Sources ◽  
Light Traps ◽  
Lamp Bulb

Although many traps have been designed to study the responses of Lepidoptera to light sources of various intensities and qualities (Gui et al., 1942; Taylor and Deay, 1950; Glick and Hollingsworth, 1954; Merkl and Pfrimmer, 1955; Frost, 1957), few have been designed for studies of flight periodicity. The first one designed for the latter purpose was described by Seamans and Gray (1934). It consisted of seven individual collecting units built into one structure, each unit being operated for one hour of the night. Interval light traps subsequently designed by Hutchins (1940), Nagel and Granovsky (1947), and Coon (Frost, 1952) are of the Minnesota type (Frost, 1952), having a lamp bulb, hood, baffle and funnel. Beneath the funnel is a turntable, which brings a series of collecting jars under the spout of the funnel at regulated intervals. The Rothamstead trap (Williams, 1935, 1948) is also based on a bottle-changing mechanism.

scholarly journals COMPARISON OF THE CDC LIGHT TRAP AND THE DYNATRAP® DT2000 FOR COLLECTION OF MOSQUITOES IN SEMI-FIELD AND FIELD SETTINGS

2021 ◽  
Vol 67 (1) ◽  
pp. 69-72
Author(s):  
Nicholas Acevedo
Keyword(s):  
Mosquito Control ◽  
Uv Light ◽  
Mosquito Species ◽  
Functional Limitations ◽  
Light Trap ◽  
Light Sources ◽  
Light Traps ◽  
Original Design ◽  
Cdc Light Trap ◽  
Control Programs

The CDC light trap has been the standard used by mosquito control programs to conduct mosquito and arbovirus surveillance. For the last two decades, this trap has been used with little to no modifications to its original design. Recently, new traps that utilize different light sources, modified designs, and attractants have been developed and evaluated against the CDC light trap. A semi-field and field comparison of the Dynatrap® (Model DT2000) against the CDC light trap was conducted at Anastasia Mosquito Control District. The DT2000 varies from the CDC light trap with a UV light, trapdoor/fan mechanism, and Atrakta lure which is a combination of lactic acid, ammonia, and hexanoic acid. Overall, the DT2000 collected 56% (327/600) of the Ae. aegypti released in the semifield cage, compared to 18.5% (111/600) collected by the CDC light traps. These findings suggest that the DT2000 outperformed the CDC light trap in collecting Ae. aegypti. In the field, the DT2000 collected nine target mosquito species while the CDC light trap collected four target species. The DT2000 averaged 109 ± 97.46 mosquitoes and the CDC light trap averaged 8 ± 4.64 mosquitoes. The DT2000 presented functional limitations in the field as an electrical outlet was required. Study findings suggest that where an electrical outlet is available, the DT2000 may be an alternative to the CDC light trap for mosquito surveillance.

Early Life History of Fishes in the San Francisco Estuary and Watershed

2004 ◽  
Keyword(s):  
San Francisco ◽  
Fish Larvae ◽  
Light Trap ◽  
Early Life History ◽  
Light Sources ◽  
Light Traps ◽  
Natural Stream ◽  
History Of ◽  
Distribution And Ecology ◽  
Different Color

<em>Abstract.</em>—Light traps have been used to study the distribution and ecology of fish larvae in a variety of waters. Yet the physical and taxonomic limitations of light traps have been little studied, particularly in lotic systems. The purpose of this study was to examine aspects of light trap use, bias, and specificity in a natural stream setting. We sampled fish larvae using light traps in the upper Sacramento River watershed in April (2001, 2002) and June (2002) using five different color light sources and two trap sizes. Our results suggest that (1) small traps are as effective at sampling fish larvae as large traps, (2) color of light and/or relative intensity of light have strong effects on numbers of larvae collected, and (3) environmental factors play a role in the number of larvae collected over short time periods.

scholarly journals Light trap, an effective component of integrated management of Tuta absoluta(Lepidoptera : Gelechiidae) on Tomato

2018 ◽  
Vol 13 (1) ◽  
pp. 126-128
Author(s):  
V Sridhar ◽  
G Senthil Kumaran
Keyword(s):  
Integrated Management ◽  
Light Trap ◽  
Indian Institute ◽  
Tuta Absoluta ◽  
Light Sources ◽  
Mass Trapping ◽  
Light Traps ◽  
Effective Component ◽  
Horticultural Research

The effectiveness of mass trapping the moths of Tuta absoluta was evaluated using light traps in tomato polyhouse at ICAR-Indian Institute of Horticultural Research, Bengaluru during March - June, 2018. Various colours of light sources were evaluated for their efficacy in attracting the moths. Of different coloured light sources evaluated, yellow and white (bluish) were found relatively effective for attraction of the moths. The efficacy of mass trapping was further evaluated and incandescent yellow bulb of 60 W was found most efficient in attracting both sexes of Tuta moths. Thus light traps can be an effective tool for IPM of this pest on tomato, under polyhouse conditions.

Latitudinal and seasonal changes of nocturnal illumination with a hypothesis about their effect on catches of insects in light-traps

1984 ◽  
Vol 74 (2) ◽  
pp. 279-298 ◽  
Author(s):  
John Bowden
Keyword(s):  
Seasonal Changes ◽  
Light Trap ◽  
Light Sources ◽  
Summer Solstice ◽  
Light Traps ◽  
Time And Space ◽  
Trap Catches ◽  
Trap Sample ◽  
Over Time

AbstractAn account is given of changes in nocturnal illumination at the spring and autumn equinoxes and summer and winter solstices at latitudes between 50 and 60°N. A Relative Trap Index (RTI) was devised to describe changes in light-trap effectiveness and used to adjust catches of Noctuidae and Geometridae for change in trap effectiveness caused by seasonal and latitudinal change in nocturnal illumination at latitudes between 50 and 58°N. When so adjusted, catches were frequently larger in northern than in southern latitudes, not smaller as unadjusted catches show. It is clear that unless light-trap catches are adjusted to allow for changes of illumination, comparisons over time and space, particularly those which involve assumptions about sample constancy, are suspect. Because of the large differences in RTI that may exist between northern and southern traps, particularly in summer and between the summer solstice and other times, it may be necessary to use different light sources at different times of year to maintain a consistent trap sample.

An Analysis of Factors Affecting Catches of Insects in Light-Traps

1982 ◽  
Vol 72 (4) ◽  
pp. 535-556 ◽  
Author(s):  
John Bowden
Keyword(s):  
Cloud Cover ◽  
Light Trap ◽  
Published Data ◽  
Light Sources ◽  
Correction Factors ◽  
Light Traps ◽  
Trap Catch ◽  
Factors Affecting ◽  
Proposed Model ◽  
Trap Catches

AbstractAnalysis of published data on catches of insects in light-traps with a variety of light sources and of different designs showed that all conformed to the previously proposed model describing the functioning of a light-trap: catch = constant × where W = trap illumination and I = background illumination. Light-trap catches in differing cloud conditions and in open and woodland situations also varied as predicted by the model. A table of correction factors for different amounts of cloud cover is provided. The results are discussed in relation to use of light-traps and interpretation of light-trap data.

scholarly journals An Efficient Alternative to the CDC Gravid Trap for Southern House Mosquito (Diptera: Culicidae) Surveillance

2020 ◽  
Author(s):  
Timothy D McNamara ◽  
Thomas A O’Shea-Wheller ◽  
Nicholas DeLisi ◽  
Emily Dugas ◽  
Kevin A Caillouet ◽  
...  
Keyword(s):  
United States ◽  
Mosquito Species ◽  
Red Light ◽  
Light Trap ◽  
The United States ◽  
Light Traps ◽  
Efficient Alternative ◽  
Gravid Trap ◽  
Trapping Trials

Abstract West Nile virus (WNV) is the most prevalent arbovirus found throughout the United States. Surveillance of surface breeding Culex vectors involved in WNV transmission is primarily conducted using CDC Gravid traps. However, anecdotal claims from mosquito abatement districts in Louisiana assert that other trap types may be more suited to WNV surveillance. To test the validity of these assertions, we conducted a series of trapping trials and WNV surveillance over 3 yr to compare the efficacy of multiple trap types. First, we compared the CDC Gravid trap, CO2-baited New Standard Miniature Blacklight traps, and CO2-baited CDC light traps with either an incandescent light, a red light, or no light. We found that the CDC Gravid trap and CO2-baited no-light CDC Light trap collected the most mosquitoes. Second, we conducted additional, long-term trapping and WNV surveillance to compare these two trap types. We found that CO2-baited no-light CDC traps collected more of the local WNV vector, Culex quinquefasciatus (Say, Diptera, Culicidae), and detected WNV with greater sensitivity. Finally, we conducted trapping to compare the physiological states of Cx. quinquefasciatus and diversity of collected mosquitoes. CO2-baited no-light CDC light traps collected more unfed Cx. quinquefasciatus while Gravid traps collected more blooded Cx. quinquefasciatus; both traps collected the same number of gravid Cx. quinquefasciatus. Additionally, we found that CO2-baited no-light CDC light traps collected a larger diversity of mosquito species than Gravid traps.

scholarly journals An Automated Light Trap to Monitor Moths (Lepidoptera) Using Computer Vision-Based Tracking and Deep Learning

Sensors ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 343
Author(s):  
Kim Bjerge ◽  
Jakob Bonde Nielsen ◽  
Martin Videbæk Sepstrup ◽  
Flemming Helsing-Nielsen ◽  
Toke Thomas Høye
Keyword(s):  
Computer Vision ◽  
Deep Learning ◽  
Vision System ◽  
Low Cost ◽  
Light Trap ◽  
Automatic Monitoring ◽  
Light Sources ◽  
Monitoring Methods ◽  
Computer Vision System ◽  
Substantial Investment

Insect monitoring methods are typically very time-consuming and involve substantial investment in species identification following manual trapping in the field. Insect traps are often only serviced weekly, resulting in low temporal resolution of the monitoring data, which hampers the ecological interpretation. This paper presents a portable computer vision system capable of attracting and detecting live insects. More specifically, the paper proposes detection and classification of species by recording images of live individuals attracted to a light trap. An Automated Moth Trap (AMT) with multiple light sources and a camera was designed to attract and monitor live insects during twilight and night hours. A computer vision algorithm referred to as Moth Classification and Counting (MCC), based on deep learning analysis of the captured images, tracked and counted the number of insects and identified moth species. Observations over 48 nights resulted in the capture of more than 250,000 images with an average of 5675 images per night. A customized convolutional neural network was trained on 2000 labeled images of live moths represented by eight different classes, achieving a high validation F1-score of 0.93. The algorithm measured an average classification and tracking F1-score of 0.71 and a tracking detection rate of 0.79. Overall, the proposed computer vision system and algorithm showed promising results as a low-cost solution for non-destructive and automatic monitoring of moths.

New Results of Using the Light Trap for Collecting Beetles (Insecta: Coleoptera) in the Urban Environment (on the Example of Saratov)

2020 ◽  
Vol 2 (2) ◽  
pp. 72-78
Author(s):  
A.S. Sazhnev ◽  
◽  
V.V. Anikin ◽  
Keyword(s):  
Invasive Species ◽  
Urban Areas ◽  
Harmonia Axyridis ◽  
Low Cost ◽  
Light Trap ◽  
Ecological Groups ◽  
Light Traps ◽  
Adventitious Species ◽  
First Time ◽  
Stegobium Paniceum

The article presents the results of research of the using light traps (luminescent lamp Actinic 6W) for collecting Coleoptera in the Saratov city. Entomological material was collected by the second author in the period from 1.06 to 2.10.2019. In 2019, 52 species of Coleoptera of 22 families from different ecological groups were recorded. A relatively high proportion of adventitious species remains in 17.3– 30.7% of the presented fauna was presented. For two years the 14 species of alien and cryptogenic Coleoptera species were observed, that is 24.5% of the adventive fauna of the Saratov Province. Among invasive species Attagenus smirnovi, Stegobium paniceum, Atomaria lewisi, Harmonia axyridis, Gnatocerus cornutus, and Orchestes steppensis were record for the first time in 2019. It to use bringing on light as one of the available and low-cost ways to identify alien and cryptogenic organisms in urban areas is recommended.

Centers for Disease Control-type light traps equipped with high-intensity light-emitting diodes as light sources for monitoring Anopheles mosquitoes

Acta Tropica ◽  
2018 ◽  
Vol 183 ◽  
pp. 61-63 ◽  
Author(s):  
Benedita Maria Costa-Neta ◽  
Abdias Ribeiro Lima-Neto ◽  
Apoliana Araújo da Silva ◽  
Jefferson Mesquita Brito ◽  
João Vitor Castro Aguiar ◽  
...  
Keyword(s):  
Disease Control ◽  
High Intensity ◽  
Light Emitting Diodes ◽  
Light Sources ◽  
Light Traps ◽  
Light Emitting ◽  
Anopheles Mosquitoes ◽  
Centers For Disease Control ◽  
High Intensity Light

scholarly journals POLA POPULASI KUMBANG LUCANID (COLEOPTERA:LUCANIDAE) PADA BERBAGAI TIPE HABITAT DI HUTAN GUNUNG SALAK, JAWA BARAT

2013 ◽  
Vol 13 (1) ◽  
pp. 20
Author(s):  
Roni Koneri
Keyword(s):  
Forest Disturbance ◽  
Light Trap ◽  
Habitat Type ◽  
Forest Types ◽  
Light Traps ◽  
Temporal Dynamic ◽  
Dynamic Pattern ◽  
Beetle Population ◽  
Population Pattern ◽  
Mountain West

POLA POPULASI KUMBANG LUCANID (COLEOPTERA:LUCANIDAE) PADA BERBAGAI TIPE HABITAT DI HUTAN GUNUNG SALAK,  JAWA  BARAT Abstrak Penelitian ini bertujuan untuk mengkaji pola populasi kumbang lucanid di hutan Gunung Salak. Data populasi kumbang lucanid diperoleh dengan menggunakan perangkap lampu (light trap). Penelitian dilaksanakan di kawasan hutan Gunung Salak dan berlangsung dari bulan Mei 2004 sampai Desember 2005. Hasil penelitian menunjukkan bahwa kelimpahan populasi di alam mencapai puncaknya pada bulan April dan Mei. Spesies yang selalu muncul setiap bulan selama pengamatan adalah Cyclomatus canaliculatus, Prosopocoilus astocoides dan Hexarthrius buqueti. Kata kunci: Gunung Salak, kumbang lucanid, populasi. Population Pattern of Lucanid Beetle in Different Habitat Type at Salak Mountain, West Java Absract The objectives of the research were to study temporal dynamic pattern of Lucanid beetle in different habitat type. Research was conducted between May 2004 and December 2005. Beetles were surveyed by using light traps in three different forest types. Results have indicated that temporal dynamic pattern of  Lucanid beetle was affected by forest disturbance level.  Highest number of Lucanid beetles were  recorded in April dan May. Species which always emerge each month during perception is Cyclomatus canaliculatus, Prosopocoilus astocoides and Hexarthrius buqueti. Keywords: Salak mountain, lucanids beetle, population.

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