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Journal articles on the topic 'GC-EAD'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Li, Chongyang, Jianmin Cao, Xiufang Wang, Pengjun Xu, Xinwei Wang, and Guangwei Ren. "Efficacy of an improved method to screen semiochemicals of insect." PeerJ 9 (May 20, 2021): e11510. http://dx.doi.org/10.7717/peerj.11510.

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Background A combination of gas chromatography-electroantennographic detection (GC-EAD) and gas chromatography-mass spectrometry (GC-MS) is typically used to screen active compounds that play a role in the regulation of insect behavior. This method uses two kinds of gas chromatography (GC) equipment and needs to compare compounds between the two chromatograms, and it is tedious and costly. To improve detection efficiency, as well as reduce costs and the rate of missed detection, we designed a system connecting gas chromatography (GC), electroantennography (EAG), and mass spectrometry (MS), wit

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2

Břízová, Radka, Lucie Vaníčková, Mária Faťarová, Sunday Ekesi, Michal Hoskovec, and Blanka Kalinová. "Analyses of volatiles produced by the African fruit fly species complex (Diptera, Tephritidae)." ZooKeys 540 (November 26, 2015): 385–404. https://doi.org/10.3897/zookeys.540.9630.

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Ceratitis fasciventris, Ceratitis anonae and Ceratitis rosa are polyphagous agricultural pests originating from the African continent. The taxonomy of this group (the so-called Ceratitis FAR complex) is unclear. To clarify the taxonomic relationships, male and female-produced volatiles presumably involved in pre-mating communication were studied using comprehensive two-dimensional gas chromatography with time-of-flight mass spectrometry (GC×GC-TOFMS) followed by multivariate analysis, and gas chromatography combined with electroantennographic detection (GC-EAD). GC×GC-TOFMS analyses revealed s

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3

Calmeto, Thiago Luis Lopes, and André Yves Cribb. "MATURIDADE EM GESTÃO DO CONHECIMENTO: UM DIAGNÓSTICO SOBRE O SISTEMA DE EDUCAÇÃO A DISTÂNCIA DE UMA INSTITUIÇÃO FEDERAL DE ENSINO NO SUL FLUMINENSE." Revista Conhecimento Online 1 (February 18, 2022): 161–88. http://dx.doi.org/10.25112/rco.v1.2262.

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Muitas organizações reconhecem a importância e aplicam a Gestão do Conhecimento (GC) para melhorarem o desempenho e obterem vantagens competitivas. Nas organizações públicas, sua adoção representa utilizar um modelo de gestão voltado para melhoria da prestação de seus serviços, inclusive nas instituições de ensino, pelo fato destas lidarem com o conhecimento e este ser a razão de existirem. Mas antes de implementar a GC, as organizações devem realizar uma análise prévia quanto aos aspectos relacionados à dinâmica do conhecimento internamente. Neste sentido, o presente estudo teve como objetivo

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4

Ma, Tao, Qiang Xiao, Yu-Geng Yu, et al. "Analysis of Tea Geometrid (Ectropis grisescens) Pheromone Gland Extracts Using GC-EAD and GC×GC/TOFMS." Journal of Agricultural and Food Chemistry 64, no. 16 (2016): 3161–66. http://dx.doi.org/10.1021/acs.jafc.6b00339.

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5

Ramos, Clécio S., Marisi G. Soares, Adalberto M. da Silva, Luciane G. Batista-Pereira, Arlene G. Corrêa, and Massuo J. Kato. "Electrophysiological Responses of the Naupactus bipes Beetle to Essential Oils from Piperaceae Species." Natural Product Communications 7, no. 8 (2012): 1934578X1200700. http://dx.doi.org/10.1177/1934578x1200700835.

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Electrophysiological responses based on electroantennographic detection (GC-EAD) and electroantennography (EAG) analysis of Naupactus bipes beetles (Germar, 1824) (Coleoptera: Curculionidae: Brachycerinae) were used to test volatile oils of Piper gaudichaudianum, P. regnellii and P. hispidum. In the EAG experiments, female and male beetles showed significant EAG response to the three volatile oils of Piper species, with the females’ responses slightly higher than the males’. The experiments with GC-EAD revealed that some terpenoids (namely, α-pinene, β-pinene, myrcene, α-copaene and germacrene

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6

Faal, Hajar, Peter J. Silk, Peter D. Mayo, and Stephen A. Teale. "Courtship behavior and identification of a sex pheromone in Ibalia leucospoides (Hymenoptera: Ibaliidae), a larval parasitoid of Sirex noctilio (Hymenoptera: Siricidae)." PeerJ 9 (November 4, 2021): e12266. http://dx.doi.org/10.7717/peerj.12266.

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Background Ibalia leucospoides (Hymenoptera: Ibaliidae) is a larval parasitoid that has been widely introduced as a biological control agent for the invasive woodwasp,Sirex noctilio (Hymenoptera: Siricidae) in the Southern Hemisphere. In this study, the courtship behavior and identificaion of sex pheromones are described for I. leucospoides under laboratory conditions. Methods For courtship behavior, both sexes were observed in a wire mesh observation cylinder (75 cm length ×10 cm diameter) for 15 minutes. The female body washes were analyzed using Gas Chromatography- Electroantennographic Det

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7

Judd, Gary J. R., Regine Gries, Carolyn Teasdale, and Gerhard Gries. "Identification of a sex pheromone component for Pennisetia marginata (Lepidoptera: Sesiidae)." Canadian Entomologist 144, no. 6 (2012): 769–78. http://dx.doi.org/10.4039/tce.2012.75.

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AbstractRaspberry crown borer, Pennisetia marginata (Harris) (Lepidoptera: Sesiidae), is a native North American species and pest of many cane fruits. Using coupled gas chromatographic–electroantennographic detection analyses (GC-EAD) we identified candidate sex pheromone components in pheromone gland extracts and effluvia from calling females. Analysis of gland extracts on a Zebron-5 column revealed four components (A, B, C, and D) that elicited strong responses from male antennae. The two most EAD-active components A and B were hypothesised to be (3E,13Z)-octadecadienal [(3E,13Z)-18:Ald] and

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8

Jham, Gulab N., Alexsandro A. da Silva, Eraldo R. Lima, and Paulo Viana. "Identification (GC and GC-MS) of unsaturated acetates inElasmopalpus lignosellus and their biological activity (GC-EAD and EAG)." Journal of Separation Science 28, no. 3 (2005): 281–85. http://dx.doi.org/10.1002/jssc.200401814.

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9

Liu, Yan, Zhihao Cui, Mi Shi, et al. "Antennal and Behavioral Responses of Drosophila suzukii to Volatiles from a Non-Crop Host, Osyris wightiana." Insects 12, no. 2 (2021): 166. http://dx.doi.org/10.3390/insects12020166.

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Drosophila suzukii (Diptera: Drosophilidae) infests a variety of commercial fruits, including cherries and other soft-skinned fruits. After the cropping season of most cultivated crop hosts, it heavily infests the fruit of a wild host-plant, Osyris wightiana in southwest China. Here, we employ gas chromatography-electroantennographic detection (GC-EAD) together with behavioral bioassays and a trapping experiment to identify volatile semiochemicals emitted by O. wightiana that are involved in D. suzukii attraction. GC-EAD recordings of D. suzukii antenna showed responses to 13 compounds, includ

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10

Batista-Pereira, Luciane G., João B. Fernandes, M. Fátima G. F. da Silva, Paulo C. Vieira, Odair C. Bueno, and Arlene G. Corrêa. "Electrophysiological Responses of Atta sexdens rubropilosa Workers to Essential Oils of Eucalyptus and its Chemical Composition." Zeitschrift für Naturforschung C 61, no. 9-10 (2006): 749–55. http://dx.doi.org/10.1515/znc-2006-9-1023.

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AbstractThe leaf-cutting ant Atta sexdens rubropilosa Forel, 1908 is the most harmful of the Eucalyptus pests, causing severe losses in wood production through defoliation. Various strategies have been tried and effort spent on the development of methods to control this pest, however no practical and environmentally acceptable one currently exists. In this work the chemical composition of the essential oil of seven Eucalyptus species was identified and the selectivity and sensitivity of antennal receptors of A. sexdens rubropilosa workers to the volatile compounds were determined using the ele

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11

Blažytė-Čereškienė, Laima, Vincas Būda, Violeta Apšegaitė, et al. "Sea Buckthorn Hippophae rhamnoides and Fruit Flies Rhagoletis batava: Search for Volatile Semiochemicals Involved in Pest Attraction." Horticulturae 8, no. 2 (2022): 179. http://dx.doi.org/10.3390/horticulturae8020179.

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Rhagoletis batava (Diptera: Tephritidae), is the most important pest of Hippophae rhamnoides fruits. For detection and monitoring of R. batava, traps supplied with nonspecific attractants are used. Thus, new, more specific attractants for environment-friendly pest control are needed. Such attractants could be fruit-related semiochemicals that are involved in the host location by flies. Behavioural Y-olfactometer tests revealed that R. batava males were attracted to ripe fruit odour, while females preferred unripe and semi-ripe fruits. Thermal desorption gas chromatography-mass spectrometry (GC

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12

Komen, Ednah, Lucy K. Murungi, and Janet Irungu. "Behavioral response of the small hive beetle, Aethina tumida (Coleoptera: Nitidulidae) to volatiles of Apicure®, a plant-based extract." AAS Open Research 2 (February 25, 2019): 9. http://dx.doi.org/10.12688/aasopenres.12946.1.

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Background: The small hive beetle (SHB), Aethina tumida is an invasive pest of the honey bee. Although no previous methods have led to its successful management, yeast inoculated pollen baited-traps have showed promise as quick monitoring tools. In this study, we evaluated the role of olfaction in SHB response to Apicure®, an essential oil-based biopesticide that has shown potential for the management of honey bee pests and diseases. Methods: Volatiles from Apicure® were collected using super Q adsorbent traps. Subsequent analysis was done using Gas chromatography- mass spectrophotometry (GC-M

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13

Magsi, Fida Hussain, Zongxiu Luo, Yingjie Zhao, et al. "Electrophysiological and Behavioral Responses of Dasychira baibarana (Lepidoptera: Lymantriidae) to Tea Plant Volatiles." Environmental Entomology 50, no. 3 (2021): 589–98. http://dx.doi.org/10.1093/ee/nvab016.

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Abstract Tea black tussock moth, Dasychira baibarana (Matsumura) (Lepidoptera: Lymantriidae), is a devastating pest species of the tea plant in China. Here, we evaluated the responses of D. baibarana to tea plant volatiles using gas chromatography coupled electroantennographic detection (GC–EAD), eleclectroantennography (EAG), and a Y-tube olfactometer. In total, 11 of 18 analyzed compounds elicited GC–EAD responses from test insects. GC–EAD bio-active compounds were further investigated using EAG and behavioral responses. In the EAG analysis, male moths had significantly greater responses to

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14

Zhang, Mengmeng, Zhihao Cui, Nuo Zhang, Guanglin Xie, Wenkai Wang, and Li Chen. "Electrophysiological and Behavioral Responses of Holotrichia parallela to Volatiles from Peanut." Insects 12, no. 2 (2021): 158. http://dx.doi.org/10.3390/insects12020158.

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Holotrichia parallela (Coleoptera: Scarabaeidae: Melolonthinae) is a notorious pest of many crops, especially peanuts. In this study, volatiles from peanut plants were analyzed using both gas chromatographic-electroantennographic detection (GC-EAD) and gas chromatography/mass spectrometry (GC/MS) techniques, and tested for adult attraction with field trapping bioassays in Hebei Province, China. GC-EAD analyses indicated that H. parallela antennae strongly responded to twelve GC peaks, including eight identified compounds, (Z)-β-ocimene, hexanal, 6-methyl-5-hepten-2-one, nonanal, dihydromyrceno

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15

Babu, V. R., S. Satpathy, and B. V. S. Reddy. "Identification and characterisation of female released sex pheromone components of jute semilooper, Anomis sabulifera Guenee (Lepidoptera: Noctuidae)." Journal of Environmental Biology 42, no. 2 (2021): 254–64. http://dx.doi.org/10.22438/jeb/42/2/mrn-1501.

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Aim: Identification and characterization of female released sex pheromone components of jute semilooper, Anomis sabulifera Guenee (Lepidoptera: Noctuidae) from female pheromone gland extracts. Methodology: Electroantennogram (EAG) was carried for studying the antennal response; Gas Chromatography coupled with Electro antenna Detector (GC-EAD) was conducted for studying the antennal response of eluted compounds from female pheromone gland extract; Gas Chromatography and Mas Spectrophotometry (GC-MS) was conducted for characterization or getting complete profile of compounds present in the femal

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16

Svatoš, Aleš, Blanka Kalinová, Jiří Kindl, et al. "Chemical Characterization and Synthesis of the Major Component of the Sex Pheromone of the Sugarcane Borer Diatraea saccharalis." Collection of Czechoslovak Chemical Communications 66, no. 11 (2001): 1682–90. http://dx.doi.org/10.1135/cccc20011682.

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(9Z,11E)-Hexadeca-9,11-dienal (1) was identified as a major component of the sex pheromone of the sugarcane borer Diatraea saccharalis. The identification is based on mass spectral examination of the extracts prepared from calling females, derivatization experiments with 4-methyl-3,5-dihydro-1,2,4-triazole-3,5-dione (2), stereospecific synthesis of dienal 1, and gas chromatography (GC) with electroantennographic detection (GC-EAD). In GC analysis, the antennaly active component and synthetic dienal 1 show identical retention times on several GC phases. However, the behavioral activity of synth

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17

Bédard, C., R. Gries, G. Gries, and R. Bennett. "Cydia strobilella (Lepidoptera: Tortricidae): antennal and behavioral responses to host and nonhost volatiles." Canadian Entomologist 134, no. 6 (2002): 793–804. http://dx.doi.org/10.4039/ent134793-6.

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AbstractFemale spruce seed moths, Cydia strobilella (L.) (Lepidoptera: Tortricidae), oviposit on seed cones of most North American spruces (Picea spp.) (Pinaceae) at the time of pollination, and larvae feed on seeds in the maturing cones. We tested the hypothesis that host-seeking moths respond to volatiles from both host and nonhost trees. In coupled gas chromatographic – electroantennographic detection (GC–EAD) analyses of extracts of spruce seed cone volatiles, > 17 compounds elicited antennal responses from male and female C. strobilella. A blend of seven compounds, including (−)-α-pine

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18

Hosseini, Seyed Ali, Seyed Hossein Goldansaz, Astrid T. Groot, et al. "Identification of Bioactive Plant Volatiles for the Carob Moth by Means of GC-EAD and GC-Orbitrap MS." Applied Sciences 11, no. 18 (2021): 8603. http://dx.doi.org/10.3390/app11188603.

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The aim of this study was to validate a workflow that allows structural identification of plant volatiles that induce a behavioral response in insects. Due to the complexity of plant volatile emissions and the low levels at which these bioactive components tend to occur, gas chromatography-electroantennography (GC-EAD) was applied as the prime differentiator technique, i.e., to indicate particular peaks of interest in the chromatogram. In a next step, the analysis was repeated under identical conditions using GC-Orbitrap mass spectrometry (MS). Combining electron impact (EI) ionization and che

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19

Xiao, Dianzhao, Jiahui Liu, Yulong Liu, Yiwei Wang, Yidi Zhan, and Yong Liu. "Exogenous Application of a Plant Elicitor Induces Volatile Emission in Wheat and Enhances the Attraction of an Aphid Parasitoid Aphidius gifuensis." Plants 11, no. 24 (2022): 3496. http://dx.doi.org/10.3390/plants11243496.

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It is well known that plant elicitors can induce plant defense against pests. The herbivore-induced plant volatile (HIPV) methyl salicylate (MeSA), as a signaling hormone involved in plant pathogen defense, is used to recruit natural enemies to protect wheat and other crops. However, the defense mechanism remains largely unknown. Here, the headspace volatiles of wheat plants were collected and analyzed by gas chromatography-mass spectrometry (GC−MS), gas chromatography with electroantennographic detection (GC−EAD) and principal component analysis (PCA). The results showed that exogenous applic

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20

McNair, Crawford, Gerhard Gries, and Regine Gries. "SEX PHEROMONE COMPONENTS OF ENARMONIA FORMOSANA (LEPIDOPTERA: TORTRICIDAE)." Canadian Entomologist 131, no. 1 (1999): 85–92. http://dx.doi.org/10.4039/ent13185-1.

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Abstract(E)-9-Dodecenyl acetate (E9-12:OAc) and (Z)-9-dodecenyl acetate (Z9-12:OAc) are major components of the sex pheromone of the cherry bark tortrix (CBT), Enarmonia formosana (Scopoli), in British Columbia. The compounds were identified in extracts of female pheromone glands by coupled gas chromatographic – electroantennographic detection (GC–EAD) and coupled GC – mass spectrometry. In field experiments, traps baited with E9-12:OAc or Z9-12:OAc singly were unattractive to male CBT, but in combination at ratios of 50:50 or 40:60 captured numerous males. Increasing quantities of this two-co

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21

Grant, Gary G., Jian Guo, Linda MacDonald, and Melanie D. Coppens. "Oviposition response of spruce budworm (Lepidoptera: Tortricidae) to host terpenes and green-leaf volatiles." Canadian Entomologist 139, no. 4 (2007): 564–75. http://dx.doi.org/10.4039/n06-079.

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AbstractA dual-choice behavioral bioassay and gas chromatography – electroantennogram detection (GC–EAD) were used to determine the effect of host terpenes and nonhost green-leaf volatiles (GLVs) on the oviposition preference of the spruce budworm, Choristoneura fumiferana (Clemens). Some emphasis was placed on assessing the ability of females to distinguish between enantiomers of chiral monoterpenes because (+)-α-pinene but not (–)-α-pinene or (±)-α-pinene had been shown previously to promote oviposition. Headspace volatiles from white spruce, Picea glauca (Moench) Voss (Pinaceae), and balsam

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22

Milonas, Panagiotis G., Eirini Anastasaki, and Georgios Partsinevelos. "Oviposition-Induced Volatiles Affect Electrophysiological and Behavioral Responses of Egg Parasitoids." Insects 10, no. 12 (2019): 437. http://dx.doi.org/10.3390/insects10120437.

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In response to an attack by herbivores, plants emit a variety of compounds that may act as semiochemicals. Oviposition-induced volatiles (OIPVs) have been shown to mediate interactions between plants and natural enemies. Here, we investigated the role of OIPVs by Tuta absoluta towards two egg parasitoids, Trichogramma cordubense and T. achaeae. We collected headspace volatiles from tomato plants at 24, 48, and 72 h after oviposition by T. absoluta females and tested the antennographic response of Trichogramma parasitoids to them by means of gas chromatography- electro-antennographical detectio

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23

Shuttleworth, Adam, and Steven D. Johnson. "Using two confluent capillary columns for improved gas chromatography‐electroantennographic detection (GC‐EAD)." Entomologia Experimentalis et Applicata 168, no. 2 (2020): 191–97. http://dx.doi.org/10.1111/eea.12873.

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Tòth, M., C. Löfstedt, and B. S. Hansson. "Epoxyheptadecadienes Identified as Sex Pheromone Components of Tephrina arenacearia Hbn. (Lepidoptera: Geometridae)." Zeitschrift für Naturforschung C 46, no. 3-4 (1991): 257–63. http://dx.doi.org/10.1515/znc-1991-3-416.

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(Z ,Z )-3,9-cis-6,7-Epoxyheptadecadiene, and (Z,Z)-6,9-cis -3,4-epoxyheptadecadiene were identified by gas chromatography/flame ionization detection-electroantennographic detection (GC/FID-EAD) and coupled gas chromatography-mass spectrometry (GC-MS) from abdominal tip extracts of Tephrina arenacearia (Lepidoptera: Geometridae), an alfalfa pest. In gas chromatography/flame ionization-single sensillum detection (GC/FID-SC) analyses, specific olfactory receptor cells were found for (Z,Z)-6,9-cis-3,4-epoxyheptadecadiene, and tricosane. Synthetic samples of racemic (Z,Z )-6,9-cis-3,4-epoxyheptadec

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Gray, T. G., R. F. Shepherd, G. Gries, and R. Gries. "SEX PHEROMONE COMPONENT OF THE WESTERN BLACKHEADED BUDWORM, ACLERIS GLOVERANA WALSINGHAM (LEPIDOPTERA: TORTRICIDAE)." Canadian Entomologist 128, no. 6 (1996): 1135–42. http://dx.doi.org/10.4039/ent1281135-6.

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Abstract(E)-11,13-Tetradecadienal (E11,13-14:Ald) is the major component of the sex pheromone of the western blackheaded budworm (WBB), Acleris gloverana Walsingham. The compound was identified in extracts of the female’s pheromone gland by coupled gas chromatographic - electroantennographic detection (GC-EAD) and coupled GC - mass spectrometry in selected ion monitoring mode. In field experiments, E11,13-14:Ald by itself was attractive, but addition of (Z)-11,13-tetradecadienal doubled trap catches of male WBB. (E)-11,13-Tetradecadienol or (E)-11,13-tetradecadienyl acetate in binary or ternar

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26

McBrien, H., G. Gries, R. Gries, et al. "SEX PHEROMONE COMPONENTS OF THE EYESPOTTED BUD MOTH, SPILONOTA OCELLANA (DENIS AND SCHIFFERMÜLLER) (LEPIDOPTERA: OLETHREUTIDAE)." Canadian Entomologist 123, no. 6 (1991): 1391–94. http://dx.doi.org/10.4039/ent1231391-6.

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AbstractZ8-tetradecenyl acetate (Z8-14OAc andZ8-tetradecenyl alcohol (Z8-14OH) were identified as sex pheromone components of the eyespotted bud moth, Spilonota ocellana (Denis and Schiffermüller) (Lepidoptera: Olethreutidae). Compounds were identified by gas chrornatographic-eleclroantennographic (GC-EAD) and GC-mass spectroscopic analyses and field tested in apple orchards in the Okanagan Valley, B.C. Although Z8-14OAc alone was attractive to male S. ocellana, the addition of 1–5% Z8-14OH strongly synergized its attraction. Field tests comparing the attractiveness of virgin female S. ocellan

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Bengtsson, Jonas M., Yitbarek Wolde-Hawariat, Hamida Khbaish, et al. "Field Attractants for Pachnoda interrupta Selected by Means of GC-EAD and Single Sensillum Screening." Journal of Chemical Ecology 35, no. 9 (2009): 1063–76. http://dx.doi.org/10.1007/s10886-009-9684-7.

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Gries, G., R. Gries, A. L. Perez, A. C. Oehlschlager, L. M. Gonzales, and H. D. Pierce. "Aggregation Pheromone of the African Rhinoceros Beetle, Oryctes monoceros (Olivier) (Coleoptera: Scarabaeidae)." Zeitschrift für Naturforschung C 49, no. 5-6 (1994): 363–66. http://dx.doi.org/10.1515/znc-1994-5-614.

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Abstract Coleoptera, Oryctes monoceros, African Rhinoceros Beetle, Aggregation Pheromone, Ethyl 4-M ethyloctanoate Ethyl 4-m ethyloctanoate is a male-produced aggregation pheromone of the African rhinoceros beetle, Oryctes monoceros (Olivier). It was identified by coupled gas chromatographic-electroantennographic detection (GC -EAD) and coupled GC-mass spectrometry (MS) of Porapak Q-trapped male-produced volatiles. Natural and synthetic ethyl 4-m ethyloctanoate elicited comparable antennal responses. In a field experiment (La Me Research Station, Côte d’Ivoire), synthetic ethyl 4-methyloctano

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Leal, Walter Soares, and Keikichi Uchida. "Application of GC-EAD to the Determination of Mosquito Repellents Derived from a Plant, Cymbopogon citratus." Journal of Asia-Pacific Entomology 1, no. 2 (1998): 217–21. http://dx.doi.org/10.1016/s1226-8615(08)60022-9.

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Bhanu, K. R. M., D. R. Hall, R. V. Awalekar, et al. "Identification and field evaluation of female sex pheromone of leaf-eating caterpillar, Opisina arenosella (Lepidoptera: Oecophoridae)." International Journal of Tropical Insect Science 38, no. 04 (2018): 274–82. http://dx.doi.org/10.1017/s1742758418000243.

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AbstractThe leaf-eating caterpillar,Opisina arenosellaWalker, is the most destructive pest of coconut palm in India and Southeast Asia. The management practices employed againstO. arenosellaso far have been unsuccessful in many instances in India, due to the pest behaviour and coconut palm phenology. The life cycle, incidence and behaviour ofO. arenosellaare rather interesting and useful for the intervention of pheromone trapping technique for its management. We conducted the present study with the intention of identifying the female sex pheromone ofO. arenosellaand testing its efficacy under

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Būda, Vincas, Sandra Radžiutė, Violeta Apšegaitė, et al. "Electroantennographic and Behavioural Responses of European Cherry Fruit Fly, Rhagoletis cerasi, to the Volatile Organic Compounds from Sour Cherry, Prunus cerasus, Fruit." Insects 13, no. 2 (2022): 114. http://dx.doi.org/10.3390/insects13020114.

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European cherry fruit fly, Rhagoletis cerasi (Diptera: Tephritidae), is the most important pest of sweet and sour cherry fruit. This fly is difficult to control by insecticide application since most of the conventional insecticides used have been banned in Europe. Traps are used for both the pest’s mass trapping and the detection of the beginning of the flight period. Data on flies’ reactions to host-plant volatile organic compounds (VOCs) can be used to search for new attractants. VOCs were collected from the headspace of sour cherry, P. cerasus, fruit. Gas chromatography–mass spectrometry (G

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Borges Castardo, Ana Paula, Iara Carnevale de Almeida, and Letícia Fleig Dal Forno. "MÉTODOS E FERRAMENTAS DA GESTÃO DO CONHECIMENTO APLICADOS EM CURSOS DE GRADUAÇÃO NO PERÍODO DA PANDEMIA DA COVID-19." Imagens da Educação 12, no. 4 (2022): 118–36. http://dx.doi.org/10.4025/imagenseduc.v12i4.63145.

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Atualmente deve-se ter um olhar atento para o ensino híbrido devido às alterações apresentadas pelo Ministério da Educação do Brasil sobre a carga horária que as Instituições de Ensino Superior (IES), públicas e privadas, devem ofertar na modalidade de Educação a Distância (EaD). Essas IES têm repensado a organização pedagógica e curricular dos cursos presenciais de graduação para ofertar até 40% da carga horária total do curso. A área da Gestão de Conhecimento (GC) propõe métodos e ferramentas que possibilitam melhorar a gestão do conhecimento organizacional. O objetivo geral deste estudo con

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Wang, Liuyang, Yubo Wang, Xiaofang Zhang, Meijuan Fang, Xiangdong Mei, and Tao Zhang. "Identification of Female Sex Pheromone of a Plant Bug, Polymerus pekinensis Reuter (Hemiptera: Miridae)." Insects 16, no. 2 (2025): 111. https://doi.org/10.3390/insects16020111.

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Insect sex pheromones have been widely used in integrated pest control due to their efficiency, non-toxicity, specificity, and environmental sustainability. They are considered a key component of green pest management techniques. Polymerus pekinensis is a phytophagous plant bug on alfalfa (Medicago sativa L.) in East Asia. This study used gas chromatography–electroantennogram detection (GC–EAD) and gas chromatography–mass spectrometry (GC–MS) to analyze the whole-body extracts from male and female P. pekinensis. Octyl acetate (OA) and decyl acetate (DA) elicited the antennal response of males

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Allan, R. A., A. Jimenez-Perez, and Q. Wang. "Preliminary evidence for a female sex pheromone in porina (Wiseana copularis)." Proceedings of the New Zealand Plant Protection Conference 52 (August 1, 1999): 254–58. http://dx.doi.org/10.30843/nzpp.1999.52.11581.

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Porina larvae (Wiseana spp.) are a pest of pasture in New Zealand. Preliminary observations of adult W. copularis in a laboratory wind tunnel revealed that female moths fan their wings during dusk just prior to copulation. Females stopped wing-fanning upon arrival of a male moth. Mating lasted two to three minutes and no multiple mating was observed. Gas chromatography analysis of the air surrounding wingfanning females showed the presence of four volatile compounds. Gas chromatography/electro-antennogram (GC-EAD) studies indicated that male antennae were strongly responsive to one of these co

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Byers, John A. "Equations for nickel–chromium wire heaters of column transfer lines in gas chromatographic–electroantennographic detection (GC–EAD)." Journal of Neuroscience Methods 135, no. 1-2 (2004): 89–93. http://dx.doi.org/10.1016/j.jneumeth.2003.12.004.

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Sillam-Dussès, David, Blanka Kalinová, Pavel Jiroš, et al. "Identification by GC-EAD of the two-component trail-following pheromone of Prorhinotermes simplex (Isoptera, Rhinotermitidae, Prorhinotermitinae)." Journal of Insect Physiology 55, no. 8 (2009): 751–57. http://dx.doi.org/10.1016/j.jinsphys.2009.04.007.

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Burger, Barend V., Anika E. Nell, and Warren G. B. Petersen. "Analysis of pheromones: Enrichment on thick film capillary traps and GC detection with a living detector (EAD)." Journal of High Resolution Chromatography 14, no. 11 (1991): 718–23. http://dx.doi.org/10.1002/jhrc.1240141104.

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Mendes, Davide, Sofia Branco, Maria Rosa Paiva, Stefan Schütz, Eduardo P. Mateus, and Marco Gomes da Silva. "Unveiling Chemical Cues of Insect-Tree and Insect-Insect Interactions for the Eucalyptus Weevil and Its Egg Parasitoid by Multidimensional Gas Chromatographic Methods." Molecules 27, no. 13 (2022): 4042. http://dx.doi.org/10.3390/molecules27134042.

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Multidimensional gas chromatography is, presently, an established and powerful analytical tool, due to higher resolving power than the classical 1D chromatographic approaches. Applied to multiple areas, it allows to isolate, detect and identify a larger number of compounds present in complex matrices, even in trace amounts. Research was conducted to determine which compounds, emitted by host plants of the eucalyptus weevil, Gonipterus platensis, might mediate host selection behavior. The identification of a pheromone blend of G. platensis is presented, revealing to be more attractive to weevil

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Cao, Dandan, Jianfeng Liu, Zhengping Zhao, Xuewu Yan, Weichao Wang, and Jianrong Wei. "Chemical Compounds Emitted from Mentha spicata Repel Aromia bungii Females." Insects 13, no. 3 (2022): 244. http://dx.doi.org/10.3390/insects13030244.

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Aromia bungii (Coleoptera: Cerambycidae) is an economically important wood-boring insect pest of stone fruit trees, particularly Prunus persica, in China. It has entered Japan and several European countries as an invasive species in recent years. It is difficult to control because of the cryptic feeding behaviour of larvae beneath the bark. Identification of repellent constituents from non-host plants has potential for use in management strategies against this beetle. Mentha spicata is cultivated extensively in Hebei Province (China) as a medicinal plant. Firstly, antennal responses of female

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Omolo, Maurice O., Isaiah O. Ndiege, and Ahmed Hassanali. "Semiochemical signatures associated with differential attraction of Anopheles gambiae to human feet." PLOS ONE 16, no. 12 (2021): e0260149. http://dx.doi.org/10.1371/journal.pone.0260149.

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Background Several human-produced volatiles have been reported to mediate the host-seeking process under laboratory conditions, yet no effective lure or repellent has been developed for field application. Previously, we found a gradation of the attractiveness of foot odors of different malaria free individuals to Anopheles gambiae sensu stricto Giles. In this study, foot odor of the individual with the most attractive ‘smelly’ feet to the An. gambiae was collected, analyzed and attractive blend components identified. Methods The foot odor of the individual with the most attractive ‘smelly’ fee

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Yang, Meng, Qin Li, Guoshuai Zhao, Yalin Liu, and Yonggen Lou. "Electrophysiological and Behavioral Responses of Orchestes steppensis (Coleoptera: Curculionidae) to Ulmus Plant Volatiles." Plants 14, no. 1 (2024): 42. https://doi.org/10.3390/plants14010042.

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The flea-weevil Orchestes steppensis Korotyaev (Coleoptera: Curculionidae) is an Eastern Palaearctic Steppe species, and a serious pest of elm trees (Ulmus spp., Ulmaceae) by feeding on the leaves (adults) or mining them heavily (larvae) in Xinjiang, China. In order to search for chemical and ecological pest management practices, the olfactory preferences of O. steppensis for leaves of three elm species were investigated. The results revealed that O. steppensis has different host preferences for the three elm species: U. pumila L. first, followed by Ulmus laevis Pall. and Ulmus densa Litw. las

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Hung, Kim Y., J. Steven McElfresh, Yunfan Zou, Astri Wayadande, and Alec C. Gerry. "Identification of Volatiles From Plants Infested With Honeydew-Producing Insects, and Attraction of House Flies (Diptera: Muscidae) to These Volatiles." Journal of Medical Entomology 57, no. 3 (2019): 667–76. http://dx.doi.org/10.1093/jme/tjz232.

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Abstract House flies (Musca domestica L.) are mechanical vectors of food-borne pathogens including Salmonella spp., Escherichia coli O157:H7, and Shigella spp., resulting in increased risk of diarrheal disease in areas where flies are abundant. Movement of house flies into food crops may be increased by the presence of honeydew-producing insects feeding on these crops. Using gas chromatography-electroantennogram detection (GC-EAD) and gas chromatography-mass spectrometry (GC-MS), volatile odors that elicited house fly antennal response were identified from naval orange (Osbeck) (Sapindales: Ru

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Schlyter, Fredrik, Qing-He Zhang, Peter Anderson, et al. "ELECTROPHYSIOLOGICAL AND BEHAVIOURAL RESPONSES OF TOMICUS PINIPERDA AND TOMICUS MINOR (COLEOPTERA: SCOLYTIDAE) TO NON-HOST LEAF AND BARK VOLATILES." Canadian Entomologist 132, no. 6 (2000): 965–81. http://dx.doi.org/10.4039/ent132965-6.

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AbstractLeaf and bark volatiles from non-host birches, Betula pendula Roth. and Betula pubescens Ehrh. (Betulaceae), and aspen, Populus tremula L. (Salicaceae), were tested on spring-dispersing Tomicus piniperda (L.) and Tomicus minor (Hart.) by gas chromatographic – electroantennographic detection (GC–EAD) and by attractant-baited traps in southern Sweden. GC–EAD analysis of the head-space volatiles from fresh bark chips of B. pendula revealed two green leaf alcohols, 1-hexanol and (Z)-3-hexen-1-ol, that consistently elicited antennal responses by T. piniperda and T. minor. Further analyses w

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Noushini, Sally, Soo Jean Park, Jeanneth Perez, et al. "Electrophysiological Responses of Bactrocera kraussi (Hardy) (Tephritidae) to Rectal Gland Secretions and Headspace Volatiles Emitted by Conspecific Males and Females." Molecules 26, no. 16 (2021): 5024. http://dx.doi.org/10.3390/molecules26165024.

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Pheromones are biologically important in fruit fly mating systems, and also have potential applications as attractants or mating disrupters for pest management. Bactrocera kraussi (Hardy) (Diptera: Tephritidae) is a polyphagous pest fruit fly for which the chemical profile of rectal glands is available for males but not for females. There have been no studies of the volatile emissions of either sex or of electrophysiological responses to these compounds. The present study (i) establishes the chemical profiles of rectal gland contents and volatiles emitted by both sexes of B. kraussi by gas chr

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Guignard, Quentin, Marc Bouwer, Bernard Slippers, and Jeremy Allison. "Biology of a putative male aggregation-sex pheromone in Sirex noctilio (Hymenoptera: Siricidae)." PLOS ONE 15, no. 12 (2020): e0244943. http://dx.doi.org/10.1371/journal.pone.0244943.

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A putative male-produced pheromone has recently been described for the global pest of pines, Sirex noctilio, but field-activity has not been demonstrated. This study aimed to investigate the pheromone biology of S. noctilio in more detail. Specifically, we i) analysed effluvia and extracts for additional compounds by gas chromatography coupled with electro-antennographic detection (GC-EAD), mass spectrometry (GC-MS) and two dimensional time of flight mass spectrometry (GC X GC TOF MS), ii) conducted dose-response experiments for putative pheromone components, iii) determined the site of synthe

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Noushini, Saeedeh, Jeanneth Perez, Soo Jean Park, et al. "Rectal Gland Chemistry, Volatile Emissions, and Antennal Responses of Male and Female Banana Fruit Fly, Bactrocera musae." Insects 11, no. 1 (2019): 32. http://dx.doi.org/10.3390/insects11010032.

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The banana fruit fly, Bactrocera musae (Tryon) (Diptera: Tephritidae), is an economically important pest endemic to Australia and mainland Papua New Guinea. The chemistry of its rectal glands, and the volatiles emitted during periods of sexual activity, has not been previously reported. Using gas chromatography–mass spectrometry (GC-MS), we find that male rectal glands contain ethyl butanoate, N-(3-methylbutyl) acetamide, ethyl laurate and ethyl myristate, with ethyl butanoate as the major compound in both rectal gland and headspace volatile emissions. Female rectal glands contain four major c

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Schiestl, Florian P., Erika A. Wallin, John J. Beck, Magne Friberg, and John N. Thompson. "Generalized olfactory detection of floral volatiles in the highly specialized Greya-Lithophragma nursery pollination system." Arthropod-Plant Interactions 15, no. 2 (2021): 209–21. http://dx.doi.org/10.1007/s11829-021-09809-5.

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AbstractVolatiles are of key importance for host-plant recognition in insects. In the pollination system of Lithophragma flowers and Greya moths, moths are highly specialized on Lithophragma, in which they oviposit and thereby pollinate the flowers. Floral volatiles in Lithophragma are highly variable between species and populations, and moths prefer to oviposit into Lithophragma flowers from populations of the local host species. Here we used gas chromatography coupled with electroantennographic detection (GC-EAD) to test whether Greya moths detect specific key volatiles or respond broadly to

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Zhu, Xiaofeng, Bingqiang Xu, Abudukyoum Kader, et al. "Behavioral Responses of Scolytus schevyrewi (Coleoptera: Curculionidae: Scolytinae) to Volatiles From Apricot Tree (Rosales: Rosaceae)." Environmental Entomology 49, no. 3 (2020): 586–92. http://dx.doi.org/10.1093/ee/nvaa027.

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Abstract Scolytus schevyrewi Semenov (Coleoptera: Curculionidae: Scolytinae) is native to China and Central Asia. Damage by the adults and larvae weakens local apricot trees (Armeniaca spp.), often causing death to many host trees. In previous studies, freshly cut apricot logs were found to be highly attractive to S. schevyrewi adults. To explore the possibility of trapping and monitoring this bark beetle, we evaluated the effect of the apricot tree volatiles on S. schevyrewi behavior. Volatiles from the apricot logs were collected by headspace sampling and subjected to coupled gas chromatogra

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Biasazin, Tibebe, Haimanot Chernet, Sebastian Herrera, et al. "Detection of Volatile Constituents from Food Lures by Tephritid Fruit Flies." Insects 9, no. 3 (2018): 119. http://dx.doi.org/10.3390/insects9030119.

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Tephritid fruit flies require protein for sexual and gonotrophic development. Food-based lures are therefore widely used in strategies to detect and control fruit flies in the Tephritidae family. However, these baits are attractive to a broad range of insect species. We therefore sought to identify volatiles detected by the fly antennae, with the goal to compose lures that more specifically target tephritids. Using gas chromatography-coupled electroantennographic detection (GC-EAD) we screened for antennal responses of four important tephritid species to volatile compounds from five commercial

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Lukas, Kathrin, Tim Harig, Stefan Schulz, Johannes Hadersdorfer, and Stefan Dötterl. "Flowers of European pear release common and uncommon volatiles that can be detected by honey bee pollinators." Chemoecology 29, no. 5-6 (2019): 211–23. http://dx.doi.org/10.1007/s00049-019-00289-x.

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Abstract Floral scents are important pollinator attractants, but there is limited knowledge about the importance of single components in plant–pollinator interactions. This especially is true in crop pollination systems. The aim of this study is to identify floral volatiles of several European pear cultivars (Pyrus communis L.), and to determine their potential in eliciting physiological responses in antennae of honey bees (Apis mellifera L.), the most important pollinators of pear. Volatiles were collected by dynamic headspace and analysed by (high resolution) gas chromatography coupled to ma

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