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electroantennography, etc ; Bracon; electrophysiology; females; host plants; leaves; males; okra; research; Show all 9 Subjects
Abstract:
... Olfactory sensitivity of male and female of Bracon bravicornis (Wesmael) was determined to ten synthetic volatiles and extracts of okra plant by electroantennogram. Both genders were found differentially sensitivity to each compound tested. Male was found more sensitive to all tested compounds and plant extracts than female. A significant difference was found between the responses of male and fema ...
electroantennography, etc ; Phthorimaea operculella; females; males; pests; potatoes; sex pheromones; tobacco; China; Show all 9 Subjects
Abstract:
... BACKGROUND: The potato tuber moth, Phthorimaea operculella is a key pest of potato and tobacco in China. We compared the sex pheromone titers released by P. operculella female, and the electroantennogram (EAG) responses of male antennae to pheromone compounds under laboratory conditions. Then, the optimal sex pheromone ratio was screened in the field. RESULTS: The P. operculella sex pheromone feed ...
electroantennography, etc ; Frankliniella occidentalis; attractants; electrophysiology; females; greenhouses; liquids; olfactometers; pests; China; Show all 10 Subjects
Abstract:
... Western flower thrips, Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae), is a destructive, invasive pest that has spread rapidly throughout China. Traps for the prevention and control of thrips typically use a single attractant, and few studies have evaluated effective compound combinations. In this study, the attractant effects of ethyl nicotinate and p‐anisaldehyde on female F. oc ...
electroantennography, etc ; Euproctis; agriculture; hypersensitivity; males; moths; pest control; sex pheromones; tea; China; Show all 10 Subjects
Abstract:
... The tea tussock moth (Euproctis pseudoconspersa) is one of the most destructive chewing pests in tea plantations and causes a serious allergic reaction on the skin of tea plantation workers. The sex pheromone components of its Japanese population were first identified as 10,14-dimethylpentadecyl isobutyrate (10Me14Me-15:iBu) and 14-methylpentadecyl isobutyrate (14Me-15:iBu), with a stereogenic cen ...
electroantennography, etc ; Bactrocera correcta; flagellum; methyl eugenol; nanopores; odor compounds; pest control; sensilla; smell; Show all 9 Subjects
Abstract:
... The guava fruit fly, Bactrocera correcta, is one of the most destructive pests in the genus Bactrocera and detects environmental odorants mainly through antennal olfactory sensilla phenotypes with nanopores. However, it is unclear whether there are naturally occurring abnormal antennal olfactory sensilla phenotypes that affect olfaction. Here, we found that there were abnormal bulges besides nanop ...
electroantennography, etc ; Hippophae rhamnoides; Lasiocampidae; acetates; butanol; electrophysiology; entomologists; flight; host plants; moths; odors; Show all 11 Subjects
Abstract:
... Plant volatiles are important to herbivorous insects for foraging and determining host location. Considering the damage caused by the moth species, Trabala vishnou gigantina Yang, 1978 (Lepidoptera: Lasiocampidae), to sea buckthorn, Hippophae rhamnoides L. (Elaeagnaceae), plantations, this study examined the antennal and behavioral responses of T. vishnou gigantina to the volatiles produced by H. ...
electroantennography, etc ; Camellia sinensis; Dendrothrips; attractants; bioassays; eugenol; farnesene; females; limonene; olfactometers; solvents; tea; China; Show all 13 Subjects
Abstract:
... The stick tea thrip (Dendrothrips minowai Priesner) is the main pest thrip in tea (Camellia sinensis) plantations in China, and seriously affects the quality and yield of tea. Plant-derived semiochemicals provide an alternative to pheromones as lures and these compounds possess powerful attractiveness. In this study, we selected 20 non-pheromone semiochemicals, including compounds that have been r ...
electroantennography, etc ; Lobesia botrana; entomology; exposure duration; gas chromatography-mass spectrometry; males; pheromones; wind tunnels; Show all 8 Subjects
Abstract:
... The role of desensitization in mating disruption (MD) of European Grapevine Moth (EGVM), Lobesia botrana (Dennis and Schiffermüller) (Lepidoptera: Tortricidae), is studied by exposing males to different airborne pheromone concentrations for various time intervals prior to evaluate their behavioural response. By using different types of dispensers, male moths are exposed to three decreasing pheromo ...
electroantennography, etc ; Leptoglossus zonatus; aggregation pheromones; common names; nuts; sesquiterpenoids; sexual maturity; Europe; North America; Show all 9 Subjects
Abstract:
... The leaffooted bugs Leptoglossus zonatus and L. occidentalis (Hemiptera: Coreidae) cause substantial damage in tree nut crops in North America and pine seed orchards in North America and Europe, respectively. Sexually mature males of both species produce a number of aldehydes, esters, and sesquiterpenes, which are hypothesized to constitute an aggregation pheromone attractive to both sexes. Among ...
electroantennography, etc ; Elateridae; entomology; females; forests; indigenous species; males; octanoic acid; pests; sex attractants; California; Show all 11 Subjects
Abstract:
... Most known click beetle (Coleoptera: Elateridae) sex pheromones have been identified from economically important European species. We hypothesized that pheromone components might be conserved between New and Old World species, and so tested blends of known pheromones in California and Washington states. Males of the endemic species Idolus californicus and Idolus columbianus (subfamily Elaterinae) ...
... Division of labor is central to the ecological success of social insects. Among honeybees foragers, specialization for collecting nectar or pollen correlates with their sensitivity to gustatory stimuli (e.g. sugars). We hypothesize that pollen and nectar foragers also differ in their sensitivity to odors, and therefore in their likelihood to show odor-mediated responses. To assess foragerś sensiti ...
electroantennography, etc ; Kerria lacca; acetates; adults; chemical communication; decane; females; hexadecane; hexane; insects; males; olfactometers; semiochemicals; Show all 13 Subjects
Abstract:
... Chemical communication between the lac insect associated products and the lac predators were evaluated under the laboratory condition. Semiochemicals were identified and comparative analysis carried out for different stages of lac insect and its associated products. Six major compounds viz. decane, dodecane, tetradecane, heptadecane, eicosane and octacosyl acetate constituted 78%, 79% and 85% in l ...
electroantennography, etc ; Sitodiplosis mosellana; acetates; food chemistry; host preferences; ocimene; odors; oviposition; pest management; pests; wheat; Show all 11 Subjects
Abstract:
... Sitodiplosis mosellana is a major wheat pest that oviposits on spikes, and resistant wheat varieties have been released. However, wheat spike volatiles mediating S. mosellana host selection or resistance are largely unknown. In this study, we found that the highly susceptible wheat varieties Xinong 822, Xinong 88, and Xiaoyan 22 were preferred for S. mosellana oviposition, and their spike volatile ...
electroantennography, etc ; Dasychira; Erebidae; bioassays; females; males; moths; pesticide application; pests; rubber; sex pheromones; tea; wind tunnels; Show all 13 Subjects
Abstract:
... BACKGROUND: The tea black tussock moth Dasychira baibarana Matsumura is a devastating pest in tea plantations that causes substantial economic losses. Presently, there is no effective method to control this pest other than pesticide application. The identified sex pheromone of D. baibarana could be used for detecting and monitoring this pest. RESULTS: Gas chromatography–electroantennogram detectio ...
... Cytochrome P450 monooxygenases (P450s) are a large superfamily of heme-thiolate proteins and play a vital role in the biosynthesis and inactivation of endogenous substances as well as the detoxification of exogenous substances. They also function as odor-degrading enzymes (ODEs) in insect olfactory sensory systems. In the present study, a P450 gene was obtained from the antennae of Locusta migrato ...
... The oriental fruit fly, Bactrocera dorsalis, is one of the most destructive fruit insect pests. β-cypermethrin has been widely used in the orchard to control this major insect. Based on the resistance monitoring in 2011, B. dorsalis developed significant resistance against β-cypermethrin in fields. This indicated that the B. dorsalis has been exposed to sublethal concentrations of β-cypermethrin i ...
... Genes involved in chemosensation are essential for odorant-mediated insect behaviors. Odorant receptors (ORs) bind and respond to pheromones and plant volatiles, regulating insect behaviors such as mating and host-plant selection, while ionotropic receptors (IRs), which are present at lower levels in insects than ORs, influence ion channels, especially in agricultural pests. Asian corn borer, Ostr ...
... Grapholita molesta (Busck) is a menacing pest of fruit trees worldwide. A mixture of glucose, acetic acid, ethanol, and water (GAEWM) has been widely used for monitoring or trapping G. molesta adults. Previous research has shown that acetic acid captures more moths compared to ethanol; however, the respective roles of acetic acid and ethanol in bisexual attraction remain unknown. This study invest ...
electroantennography, etc ; Dioryctria abietella; Western blotting; conifers; entomology; females; ligands; myrcene; odor compounds; oviposition; pests; quantitative polymerase chain reaction; Show all 12 Subjects
Abstract:
... Dioryctria abietella is a major pest of conifer cones that can initiate specific behaviours (locating hosts, finding mates and selecting oviposition sites) through sensitive olfactory systems. General odorant‐binding proteins are involved in the first step in odorant perception in insects, but their specific functional roles in D. abietella chemoreception have not been fully elucidated. In this st ...
electroantennography, etc ; Spodoptera frugiperda; acetates; corn; dose response; insects; males; pests; population dynamics; sensilla; sex pheromones; wind tunnels; China; Show all 13 Subjects
Abstract:
... The fall armyworm Spodoptera frugiperda is a worldwide serious agricultural pest, and recently invaded South China. Sex pheromone can be employed to monitor its population dynamics accurately in the field. However, the pheromone components previously reported by testing different geographic populations and strains are not consistent. On the basis of confirming that the S. frugiperda population fro ...