Exploiting the Synergistic Effect of Kairomones and Light-Emitting Diodes on the Attraction of Phlebotomine Sand Flies to Light Traps in Brazil

2019 ◽  
Vol 56 (5) ◽  
pp. 1441-1445 ◽  
Author(s):  
Apoliana Araújo da Silva ◽  
José Manuel Macário Rebêlo ◽  
Bruna Ferreira Carneiro ◽  
Maria Patrícia Pereira Castro ◽  
Mayara de Sousa de Almeida ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Synergistic Effect ◽  
Light Emitting Diodes ◽  
Incandescent Lamp ◽  
Sand Flies ◽  
Light Traps ◽  
Phlebotomine Sand Flies ◽  
Light Emitting ◽  
Green Led ◽  
Chemical Attractant

Abstract The synergistic effect of light-emitting diodes (LEDs) and kairomones on the attraction of sand flies to light traps was evaluated. Octenol and lactic acid were used as chemical attractants. Green LEDs and the incandescent lamps were used as light attractants. Five CDC-type light traps with the respective combination of attractants (incandescent lamp, incandescent lamp + chemical attractant, green LED, green LED + chemical attractant, and chemical attractant alone [without light]) were set between 18:00 and 06:00 following a Latin square design. A total of 6,536 sand flies and 16 species were collected. The most frequent species collected was Lutzomyia longipalpis (Lutz & Neiva, 1912) (Diptera, Psychodidae) accounting for 43.21% of all individuals. Order of success (mean, SD) of lactic acid attractant fly capture was as follows: LED + lactic acid (36.83 ± 4.74), LED alone (34.87 ± 4.61), incandescent lamp + lactic acid (22.80 ± 3.19), incandescent lamp alone (12.67 ± 2.03), and lactic acid (0.46 ± 0.13). Order of success of octenol attractant fly capture was as follows: LED + octenol (37.23 ± 5.61), LED alone (35.77 ± 5.69), incandescent lamp + octenol (18.63 ± 3.28), incandescent lamp alone (14.67 ± 2.86), and octenol alone (1.80 ± 0.65). With exception of lactic acid + incandescent light, chemical synergists played no part in significantly increasing light trap capture of phlebotomine sand flies. However, the use of LEDs, with or without such attractants, provided significantly higher capture compared to the incandescent lamp with or without such chemicals, showing that LEDs are suitable and efficient light sources for surveillance and monitoring of phlebotomine sand flies in Brazil.

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

Influence of Moonlight On Light-Emitting Diode Trap Catches of Phlebotomine Sand Flies (Diptera: Psychodidae)1

2020 ◽  
Vol 129 (1) ◽  
pp. 35 ◽  
Author(s):  
Apoliana Araújo da Silva ◽  
Benedita Maria Costa-Neta ◽  
Francinaldo Soares Silva
Keyword(s):  
Light Emitting Diode ◽  
Sand Flies ◽  
Phlebotomine Sand Flies ◽  
Light Emitting ◽  
Trap Catches

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 Do Different LED Colours Influence Sand Fly Collection by Light Trap in the Mediterranean?

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Gabriella Gaglio ◽  
Ettore Napoli ◽  
Francesca Arfuso ◽  
Jessica Maria Abbate ◽  
Salvatore Giannetto ◽  
...  
Keyword(s):  
Light Trap ◽  
Mediterranean Area ◽  
Sand Fly ◽  
Sand Flies ◽  
Light Traps ◽  
Trap Design ◽  
Phlebotomine Sand Flies ◽  
Positive Effects ◽  
Uv Led ◽  
The Mediterranean

Light traps represent the most used attractive system to collect and monitor phlebotomine sand flies. Recent studies have suggested that light traps can be easily upgraded by the use of light-emitting diode (LED) with positive effects on trap design, weight, and battery life. However, scant data on the effect of different LED colours on the attractiveness to phlebotomine sand fly species are available in literature. In this study, the capture performances of light traps equipped with different LED colours on phlebotomine sand fly species indigenous in the Mediterranean area were evaluated. Phlebotomine sand fly collections were performed using a classical light trap (CLT), equipped with a traditional incandescent lamp, and five Laika 4.0 light traps supplied, each with LED of different colours and wavelengths: (i) white; (ii) red; (iii) green; (iv) blue; (v) UV. Light traps were set for three consecutive nights fortnightly from May to October 2017 and climate data recorded using a meteorological station. A total of 411 phlebotomine sand flies (191 males and 220 females), belonging to three different species, namely, Phlebotomus perniciosus (n= 298, 141 males and 157 females), Sergentomyia minuta (n=110, 48 males and 62 females), and Phlebotomus neglectus (n=3, 2 males and 1 females) were collected. Abundance of capture was influenced by colours of LED and time. The highest number of phlebotomine sand flies was captured on June (P<0.01) and by UV LED (P<0.01). As regard to species, P. perniciosus was mainly captured by UV LED on June (P<0.01). No effect of time (P>0.05) or LED colour (P>0.05) was recorded for S. minuta and P. neglectus. According to the results of the present study light trap equipped with UV LED can represent an effective tool for the capture of sand fly species in the Mediterranean area.

Synergistic Effect of Dual Ligands on Stable Blue Quasi‐2D Perovskite Light‐Emitting Diodes

2019 ◽  
Vol 30 (6) ◽  
pp. 1908339 ◽  
Author(s):  
Yan Jin ◽  
Zhao‐Kui Wang ◽  
Shuai Yuan ◽  
Qiang Wang ◽  
Chaochao Qin ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Light Emitting Diodes ◽  
Light Emitting

Relationship Between the Distribution and Biodiversity of Sand Flies (Diptera: Psychodidae) With the Incidence of Zoonotic Cutaneous Leishmaniasis in Endemic Foci of Golestan Province, Iran

2020 ◽  
Vol 57 (6) ◽  
pp. 1768-1774
Author(s):  
Aioub Sofizadeh ◽  
Kamran Akbarzadeh ◽  
Ehsan Allah Kalteh ◽  
Fatemeh Karimi
Keyword(s):  
Cutaneous Leishmaniasis ◽  
Diversity Index ◽  
Wiener Index ◽  
Sand Flies ◽  
Phlebotomus Papatasi ◽  
Light Traps ◽  
Phlebotomine Sand Flies ◽  
Zoonotic Cutaneous Leishmaniasis ◽  
Golestan Province ◽  
The Relationship

Abstract Zoonotic cutaneous leishmaniasis (ZCL) is prevalent in Golestan Province, Iran. The current study determined the relationship between the distribution and biodiversity of sand flies with cutaneous leishmaniasis at 14 villages in plain and hillsides areas. In each village from July to September 2017, 60 sticky traps and 2 CDC light traps were laid. Spearman and Mann–Whitney tests were used to determine the relationship between the incidence of ZCL and the abundance of different species of sand flies. Simpson, Shannon-Wiener, Evenness, and Margalef indices were calculated to estimate the diversity of species. A total of 5,295 phlebotomine sand flies were collected, comprising 10 species of the genus Phlebotomus (3,947 flies) and 7 species of genus Sergentomyia (1,248 flies). The abundance of sand flies and incidence of ZCL in plain areas were greater than that of hillsides areas (P = 0.013, P = 0.002). There was a significant correlation between the incidence of ZCL and the abundance of Phlebotomus papatasi (r = 0.72, P = 0.004) and P. caucasicus groups (P = 0.006; 0.022). In the Shannon-Wiener index, the rest of the biodiversity indices were reduced in higher-altitude areas. Increasing Shannon-Wiener index showed higher diversity of sand flies in higher-altitude areas. Data of the reported cases of leishmaniasis in plain areas can reveal the relationship between less diversity index (Shannon-Wiener), higher dominant diversity index (Simpson), and incidence of leishmaniasis in these areas.

scholarly journals Using Pre-TMIn Treatment to Improve the Optical Properties of Green Light Emitting Diodes

2014 ◽  
Vol 2014 ◽  
pp. 1-6
Author(s):  
Bing Xu ◽  
Hai Tao Dai ◽  
Shu Guo Wang ◽  
Fu-Chuan Chu ◽  
Chou-Hsiung Huang ◽  
...  
Keyword(s):  
Optical Properties ◽  
Quantum Wells ◽  
Radiative Decay ◽  
Light Emitting Diodes ◽  
Light Output ◽  
Green Light ◽  
Time Resolved ◽  
Light Emitting ◽  
Transmission Electron ◽  
Green Led

We investigated the effects of pre-TMIn treatment on the optical properties of green light emitting diodes (LEDs). Although pre-TMIn treatment did not affect the epitaxial structure of quantum wells, it significantly improved the quality of the surface morphology relative to that of the untreated sample. Indium cluster can be seen by high-resolution transmission electron microscopy (HR-TEM), which is the explanation for the red-shift of photoluminescence (PL). Time-resolved photoluminescence measurements indicated that the sample prepared with pre-TMIn treatment had a shorter radiative decay time. As a result, the light output power of the treated green LED was higher than that of the conventional untreated one. Thus, pre-TMIn treatment appears to be a simple and efficient means of improving the performance of green LEDs.

Enhanced performance of blue polymer light-emitting diodes by incorporation of Ag nanoparticles through the ligand-exchange process

2016 ◽  
Vol 4 (44) ◽  
pp. 10445-10452 ◽  
Author(s):  
Young Yun Kim ◽  
Woo Jin Hyun ◽  
Keum Hwan Park ◽  
Yong Guk Lee ◽  
Jaemin Lee ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Ag Nanoparticles ◽  
Ligand Exchange ◽  
Light Emitting Diodes ◽  
Exchange Process ◽  
Hole Transport ◽  
Ag Nps ◽  
Light Emitting ◽  
Resonant Coupling ◽  
Polymer Light Emitting Diodes

The efficiency of polymer light-emitting diodes was improved by synergistic effect of enhanced hole transport from mercaptoacids molecules and resonant coupling of Ag NPs introduced by ligand-exchange process.

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