scholarly journals Are Yellow Sticky Cards and Light Traps Effective on Tea Green Leafhoppers and Their Predators in Chinese Tea Plantations?

Insects ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 14
Author(s):  
Longqing Shi ◽  
Haifang He ◽  
Guang Yang ◽  
Huoshui Huang ◽  
Liette Vasseur ◽  
...  
Keyword(s):  
Field Experiment ◽  
Open Field ◽  
Insect Pests ◽  
Light Emitting Diode ◽  
Control Measure ◽  
Trapping Efficiency ◽  
Light Traps ◽  
Green Leafhopper ◽  
Exclosure Experiment ◽  
Tea Plantations

In Chinese tea plantations, yellow sticky cards and light traps are increasingly used to control insect pests, especially the tea green leafhopper Empoasca onukii. In this study, a 16-week open-field experiment with daily weather monitoring was designed to test the responses of tea green leafhopper, parasitoids and spiders to yellow sticky cards and three light traps with different wavelengths (covered with sticky cards). An exclosure experiment was also designed to further test the influence of the three light systems (without sticky card) on the same species. The results showed that all three light emitting diode (LED) light traps (white, green and yellow) and yellow sticky cards attracted many more E. onukii male adults than females during the course of the open field experiment, with less than 25% of trapped adults being females. Parasitoids and spiders were also attracted by these systems. Weather variables, especially rainfall, influenced the trapping efficiency. In the exclosure experiment, the population of leafhoppers in the yellow sticky card treatment did not decline significantly, but the number of spiders significantly decreased. The green and white light treatments without sticky cards showed a significant control of E. onukii and no obvious harm to spiders. These results suggest that yellow sticky cards and light traps have limited capacity to control tea green leafhoppers. However, light, especially green light, may be a promising population control measure for tea green leafhoppers, not as killing agents in the traps, but rather as a behavioral control system.

scholarly journals Design of a Secondary Freeform Lens of UV LED Mosquito-Trapping Lamp for Enhancing Trapping Efficiency

Crystals ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 335 ◽  
Author(s):  
Wei-Hsiung Tseng ◽  
Diana Juan ◽  
Wei-Cheng Hsiao ◽  
Cheng-Han Chan ◽  
Hsin-Yi Ma ◽  
...  
Keyword(s):  
Light Intensity ◽  
Intensity Distribution ◽  
Light Emitting Diode ◽  
Trapping Efficiency ◽  
Axially Symmetric ◽  
Light Intensity Distribution ◽  
Light Emitting ◽  
Led Light ◽  
Uv Led ◽  
Freeform Lens

In this study, our proposed ultraviolet light-emitting diode (UV LED) mosquito-trapping lamp is designed to control diseases brought by insects such as mosquitoes. In order to enable the device to efficiently catch mosquitoes in a wider area, a secondary freeform lens (SFL) is designed for UV LED. The lens is mounted on a 3 W UV LED light bar as a mosquito-trapping lamp of the new UV LED light bar module to achieve axially symmetric light intensity distribution. The special SFL is used to enhance the trapping capabilities of the mosquito-trapping lamp. The results show that when the secondary freeform surface lens is applied to the experimental outdoor UV LED mosquito-trapping lamp, the trapping range can be expanded to 100π·m2 and the captured mosquitoes increased by about 300%.

scholarly journals Response of phlebotomine sand flies to light-emitting diode-modified light traps in southern Egypt

2007 ◽  
Vol 32 (2) ◽  
pp. 302 ◽  
Author(s):  
D.F. Hoel ◽  
J.F. Butler ◽  
E. Y. Fawaz ◽  
N. Watany ◽  
S.S. El-Hossary ◽  
...  
Keyword(s):  
Light Emitting Diode ◽  
Sand Flies ◽  
Light Traps ◽  
Phlebotomine Sand Flies ◽  
Light Emitting

scholarly journals Effects of dimming light-emitting diode street lights on light-opportunistic and light-averse bats in suburban habitats

2018 ◽  
Vol 5 (6) ◽  
pp. 180205 ◽  
Author(s):  
Elizabeth G. Rowse ◽  
Stephen Harris ◽  
Gareth Jones
Keyword(s):  
Light Intensity ◽  
Field Experiment ◽  
Biodiversity Conservation ◽  
Management System ◽  
Light Emitting Diode ◽  
Local Authorities ◽  
Ecological Benefits ◽  
Carbon Footprints ◽  
Light Emitting ◽  
Central Management

Emerging lighting technologies provide opportunities for reducing carbon footprints, and for biodiversity conservation. In addition to installing light-emitting diode street lights, many local authorities are also dimming street lights. This might benefit light-averse bat species by creating dark refuges for these bats to forage and commute in human-dominated habitats. We conducted a field experiment to determine how light intensity affects the activity of the light-opportunistic Pipistrellus pipistrellus and light-averse bats in the genus Myotis. We used four lighting levels controlled under a central management system at existing street lights in a suburban environment (0, 25, 50 and 100% of the original output). Higher light intensities (50 and 100% of original output) increased the activity of light-opportunistic species but reduced the activity of light-averse bats. Compared to the unlit treatment, the 25% lighting level did not significantly affect either P. pipistrellus or Myotis spp. Our results suggest that it is possible to achieve a light intensity that provides both economic and ecological benefits by providing sufficient light for human requirements while not deterring light-averse bats.

CHANGES IN BEHAVIOR OF LABORATORY RATS WHEN EXPOSED TO VARIOUS SENSORY ORGANS: VISION, TASTE, SMELL

2021 ◽  
Author(s):  
Алина Викторовна Свиридова ◽  
Дарья Сергеевна Николенко ◽  
Мария Владимировна Абрамян ◽  
Владимир Вячеславович Алексеев
Keyword(s):  
Field Experiment ◽  
Open Field ◽  
Chronic Exposure ◽  
Stressful Situation ◽  
Sensory Organs ◽  
Laboratory Rats ◽  
Adaptive Nature ◽  
Behavior Of Rats

В работе представлены выявленные изменения поведения крыс при проведении эксперимента «Открытое поле» с хроническим воздействием на различные анализаторы крыс. Предположен адаптивный характер полученных результатов, связанный со стрессовой ситуацией при воздействии на органы чувств крыс. The paper presents the revealed changes in the behavior of rats during the "Open Field" experiment with chronic exposure to various rat analyzers. The adaptive nature of the results obtained is assumed to be associated with a stressful situation when exposed to the sensory organs of rats.

Open field experiment for the evaluation of Arundo donax ecotypes ecophysiology and yield as affected by soil water content

2019 ◽  
Vol 140 ◽  
pp. 111630 ◽  
Author(s):  
Ezio Riggi ◽  
Giovanni Avola ◽  
Giovanni Marino ◽  
Matthew Haworth ◽  
Salvatore Luciano Cosentino ◽  
...  
Keyword(s):  
Field Experiment ◽  
Water Content ◽  
Soil Water ◽  
Soil Water Content ◽  
Open Field ◽  
Arundo Donax

Relationships of brown planthopper resistance to tungro virus and grain characteristics in rice

1987 ◽  
Vol 109 (3) ◽  
pp. 609-610 ◽  
Author(s):  
G. S. V. Prasad ◽  
M. V. S. Sastry ◽  
J. R. K. Rao ◽  
A. Ghosh ◽  
Y. Kondala Rao
Keyword(s):  
Oryza Sativa ◽  
Insect Pests ◽  
Effective Means ◽  
Brown Planthopper ◽  
Nilaparvata Lugens ◽  
Rice Cultivars ◽  
Genetics Of Resistance ◽  
Green Leafhopper ◽  
Resistant Varieties ◽  
Brown Planthopper Resistance

Brown planthopper, Nilaparvata lugens (Stal), is one of the most serious insect pests of rice (Oryza sativa L.) throughout Asia. Introduction of resistant varieties could be an effective means of minimizing losses from the pest. Several hundred rice cultivars resistant to the pest have been identified and the genetics of resistance has been analysed. Studies have shown that the genes for resistance to brown planthopper, bph-4, and to green leafhopper, Glh-3, are linked (Sidhu & Khush, 1979). Ideka & Kaneda (1983) reported that bph-2 for brown planthopper resistance was linked with the gene d2 for dwarfness. The present study sought to ascertain relationships between resistance to brown planthopper and tungro virus and grain characteristics.

Status of Insect Pests and Natural Enemies of Direct Seeded and Transplanted Rice

2017 ◽  
Vol 14 (4) ◽  
pp. 11-29
Author(s):  
K N Ashrith
Keyword(s):  
Natural Enemies ◽  
Insect Pests ◽  
Stem Borer ◽  
Cnaphalocrocis Medinalis ◽  
Green Leafhopper ◽  
Yellow Stem Borer ◽  
Transplanted Rice ◽  
Rice Leaf Folder ◽  
The Status ◽  
Direct Seeded

Studies were conducted on the status of insect-pests and natural enemies of direct seeded rice (DSR) in comparison with puddled transplanted rice (PTR) during rabi and kharif in 2013-14. The rice leaf folder and yellow stem required both the seasons. Maximum leaf folder Cnaphalocrocis medinalis (Guenee) (13.03%) damage and yellow stem borer damage (13.49%) of white ears was recorded during last week of October and second week of November in DSR under unprotected situation respectively. While sucking pests population mainly green leafhopper incidence was comparatively high in PTR (3.29 and 4.92/hill) also plant hoppers incidence (BPH and WBPH) (28.90 and 18.44 adults/hill) under unprotected situation during two seasons respectively. Population of predators at both the season remained high throughout the study period in PTR than the DSR except

Monitoring and potential control of sea lice using an LED-based light trap

2009 ◽  
Vol 66 (8) ◽  
pp. 1371-1382 ◽  
Author(s):  
Iñigo Novales Flamarique ◽  
Christina Gulbransen ◽  
Moira Galbraith ◽  
Dario Stucchi
Keyword(s):  
Oncorhynchus Tshawytscha ◽  
Light Emitting Diode ◽  
Light Trap ◽  
Sea Lice ◽  
Light Traps ◽  
Light Emitting ◽  
Farmed Salmon ◽  
Potential Control ◽  
Larval Stages ◽  
Salmon Lice

Sea lice are ectoparasitic copepods that threaten salmon farming aquaculture and the viability of wild salmon populations. To control infestations on farmed salmon, several chemotherapeutants have been developed, but these are invasive (often causing fish stress and loss in production), costly, may induce parasite resistance over time, and their impact on the environment is a major social concern. Here, we show that a light-emitting diode (LED)-based light trap can be used to monitor sea lice presence on fish and in the water. The performance of the light trap was tested in experimental tanks and in the ocean. Plankton net tows were also performed to compare catches with those from light traps. The light trap caught ~70% of salmon lice larval stages loaded onto a tank and ~24% of the adults. It also acted as a delousing agent by removing ~8% of adult salmon lice infective on Chinook salmon ( Oncorhynchus tshawytscha ) smolts in tank experiments. In the ocean, the light trap caught 21 sea lice (10 Lepeophtheirus salmonis and 11 Caligus clemensi ), comprising free-swimming and attached stages, while plankton net tows failed to capture any. We conclude that light traps constitute an effective, noninvasive, environmentally friendly method to monitor sea lice.

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