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  • Artikel  (17)
  • Noctuidae  (13)
  • Chemistry  (4)
  • 1
    Digitale Medien
    Digitale Medien
    Identification of a male-produced pheromone ofAnticarsia gemmatalis (Hübner) (Lepidoptera; Noctuidae) attractive to conspecific males (1988)
    Springer
    Journal of chemical ecology 14 (1988), S. 1121-1130 
    Details
    ISSN: 1573-1561
    Schlagwort(e): Anticarsia gemmatalis ; velvetbean caterpillar ; Lepidoptera ; Noctuidae ; attractant ; pheromone ; hairpencils ; (Z,Z,Z)-3,6,9-heneicosatriene ; male-produced pheromone
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie
    Notizen: Abstract Observations in the laboratory and in the field indicated that maleAnticarsia gemmatalis (Hübner), the velvetbean caterpillar (VBC), are attracted to conspecific courting males. Male VBC subsequently were found to be attracted to extracts of male abdominal tips including the extrudable hairpencils. The active chemical in these extracts was identified as (Z,Z,Z)-3,6,9-heneicosatriene, which is also one of the major components of the female VBC sex pheromone. Male VBC in a wind tunnel and in the field exhibited a bimodal response distribution to a range of ratios of the (Z,Z,Z)-3,6,9-heneicosatriene and (Z,Z,Z)-3,6,9-eicosatriene, with one maximum at the pure heneicosatriene alone and the other at the 60∶40 female blend. This demonstrates that the male response to the male hairpencil component is distinct from that to the female sex pheromone.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01019340
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  • 2
    Digitale Medien
    Digitale Medien
    Identification of a sex pheromone produced by female velvetbean caterpillar moth (1983)
    Springer
    Journal of chemical ecology 9 (1983), S. 645-656 
    Details
    ISSN: 1573-1561
    Schlagwort(e): Sex pheromone ; 3,6,9-heneicosatriene ; 3,6,9-eicosatriene ; velvetbean caterpillar ; Anticarsia gemmatalis Hübner ; Lepidoptera ; Noctuidae ; attractant ; hydrocarbons
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie
    Notizen: Abstract A sex pheromone produced by female velvetbean caterpillar moths,Anticarsia gemmatalis Hübner, that attracts conspecific males was isolated and identified as a blend of (Z,Z,Z)-3,6,9-eicosatriene and (Z,Z,Z)-3,6,9-heneicosatriene in a ratio of ca. 5∶3, respectively, when combined. The synthesized compounds elicited responses by velvetbean caterpillar moth males equivalent to those elicited by females in both laboratory wind tunnel bioassays and field trapping experiments.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00990414
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  • 3
    Digitale Medien
    Digitale Medien
    Chemical and behavioral analyses of volatile sex pheromone components released by callingHeliothis virescens (F.) females (Lepidoptera: Noctuidae) (1986)
    Springer
    Journal of chemical ecology 12 (1986), S. 107-126 
    Details
    ISSN: 1573-1561
    Schlagwort(e): Volatile sex pheromone blend ; behavior ; chemistry ; Heliothis virescens ; Lepidoptera ; Noctuidae
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie
    Notizen: Abstract Gas chromatographic and mass spectral analyses were conducted on pheromone gland extracts, volatiles collected from excised pheromone glands, and volatiles collected from calling females. In addition to tetradecanal, (Z)-9-tetradecenal, hexadecanal, (Z)-7-hexadecenal, (Z)-9-hexadecenal, and (Z)-11-hexadecenal, four other compounds, tetradecanol, (Z)-9-tetradecenol, hexadecanol, and (Z)-11-hexadecenol, were also identified from gland extracts. Only the six aldehyde components were found in gland and female volatile collections. The mean percentage of components identified from volatiles collected from calling females was 13.0% tetradecanal, 18.1% (Z)-9-tetradecenal, 7.3% hexadecanal, 0.6% (Z)-7-hexadecenal, 1.0% (Z)-9-hexadecenal, and 60.0% (Z)-11-hexadecenal. Bioassays using rubber septa formulated to release the female volatile blend indicated that all six aldehyde components play major roles in close-range male reproductive behavior. Deletion of (Z)-9-hexadecenal from the six-component blend reduced the number of copulation attempts while (Z)-7-hexadecenal exerted subtle effects on all close range behaviors. Tetradecanal affected the number of times males reorient from close range. Deletion of hexadecanal from the six-component blend resulted in a significant reduction in the number of times males landed. Comparison of the six-component synthetic blend (released at somewhat less than 1 female equivalent per hour) with calling females indicated that the six-component blend was indistinguishable from the females in inducing all of the behaviors monitored.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01045595
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  • 4
    Digitale Medien
    Digitale Medien
    Flight response ofHeliothis subflexa (Gn.) females (Lepidoptera: Noctuidae) to an attractant from groundcherry,Physalis angulata L. (1989)
    Springer
    Journal of chemical ecology 15 (1989), S. 221-231 
    Details
    ISSN: 1573-1561
    Schlagwort(e): Heliothis subflexa ; Lepidoptera ; Noctuidae ; attractant ; kairomone ; groundcherry ; Physalis angulatus ; flight tunnel bioassay ; plant-insect interaction
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie
    Notizen: Abstract Mated femaleHeliothis subflexa (Gn.) (HS) moths 1–7 days old responded positively in a Plexiglas flight tunnel to an attractant extracted with methanol from fresh whole-leaf washes of groundcherry,Physalis angulata L. Response to the groundcherry extract, as indicated by plume-tracking (i.e., upwind flight toward the odor source) and contact with the chemical dispenser did not change significantly during the first 5 hr of scotophase. Overall, ca. 50% of the responding moths also landed on the chemical dispenser; ca. 50% of the moths that landed also deposited eggs. There were no significant differences in the behavioral responses of females mating only once and those that had mated two or more times. Virgin females and male moths were significantly less responsive to the groundcherry attractant than mated females. The flight tunnel bioassay described provides an excellent system for evaluating plant allelochemics associated with host-plant selection.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02027784
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  • 5
    Digitale Medien
    Digitale Medien
    Ovipositional response of threeHeliothis species (Lepidoptera: Noctuidae) to allelochemicals from cultivated and wild host plants (1990)
    Springer
    Journal of chemical ecology 16 (1990), S. 1817-1827 
    Details
    ISSN: 1573-1561
    Schlagwort(e): Cotton ; groundcherry ; tobacco ; Gossypium ; Desmodium ; Physalis ; plant-insect interaction ; host-plant resistance ; Heliothis spp. ; Lepidoptera ; Noctuidae ; oviposition stimulant ; oviposition deterrent
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie
    Notizen: Abstract The role of plant allelochemicals on the oviposition behavior ofHeliothis virescens (F.),H. subflexa (Guenee), andH. zea (Boddie) was investigated in the laboratory using a “choice” bioassay system. Fresh young leaves of tobacco,Desmodium tortuosum (Swartz) de Candolle, groundcherry (Physalis angulata L.), and cotton (Gossypium hirsutum L.) squares (flower buds) were washed in methylene chloride or methanol, concentrated to 1 g equivalent of washed material, and applied to a cloth oviposition substrate. Each of the extracts—including groundcherry, a nonhost—stimulated oviposition byH. virescens. H. subflexa were stimulated to oviposit by groundcherry extract, its normal host, and extract from cotton squares, a nonhost. None of the extracts stimulated oviposition byH. zea, although all except groundcherry were from reported hosts. The sensitivity of the bioassay was confirmed by givingH. virescens andH. subflexa an opportunity to choose between extracts that showed stimulant qualities when tested independently versus only solvent-treated controls. In these tests, tobacco showed the highest level of stimulant activity forH. virescens; groundcherry exhibited the highest level of stimulation forH. subflexa.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01020496
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  • 6
    Digitale Medien
    Digitale Medien
    Mating and oviposition byCotesia (=Apanteles) marginiventris (Hymenoptera: Braconidae) in presence of synthetic pheromone ofSpodoptera frugiperda (Lepidoptera: Noctuidae) (1989)
    Springer
    Journal of chemical ecology 15 (1989), S. 2045-2050 
    Details
    ISSN: 1573-1561
    Schlagwort(e): Mating behavior ; Parasitoids ; Cotesia (=Apanteles)marginiventris ; Hymenoptera ; Braconidae ; Spodoptera frugiperda ; Lepidoptera ; Noctuidae
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie
    Notizen: Abstract Two blends of fall armyworm,Spodoptera frugiperda (J.E. Smith), pheromonal components were evaluated in the laboratory for possible close-range effects on mating and oviposition byCotesia marginiventris (Cresson). Neither a two- nor a five-component blend had any significant effect on mating or parasitization ofS. frugiperda larvae by this parasitoid. Dosages of 200, 400, and 800 μg were tested.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01207436
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  • 7
    Digitale Medien
    Digitale Medien
    Identification of male cabbage looper sex pheromone attractive to females (1992)
    Springer
    Journal of chemical ecology 18 (1992), S. 441-453 
    Details
    ISSN: 1573-1561
    Schlagwort(e): Male-produced pheromone ; cabbage looper ; Trichoplusia ni ; Lepidoptera ; Noctuidae ; female attractant ; linalool ; p-cresol ; m-cresol ; enantiomers
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie
    Notizen: Abstract A multicomponent pheromone produced by male cabbage looper moths that is attractive to female moths in a flight tunnel bioassay was isolated and identified. Based on analyses of hairpencil extracts of male cabbage loopers and volatiles emitted by males, the pheromone has been identified as a blend consisting of (S)-(+)-linalool,p-cresol, andm-cresol. The chirality of the major component, (S)-(+)-linalool, is important for behavioral response of females. These pheromonal compounds were also identified as volatiles released by males when males were exposed to the principal pheromone component of female cabbage loopers, (Z)-7-dodecen-1-ol acetate. The amount of male pheromone released was increased significantly when males were exposed to a combination of (Z)-7-dodecen-1-ol acetate and the odor from cabbage. Neither linalool nor the cresols were detected in volatiles from cabbage or from males exposed to cabbage odor.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00994243
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  • 8
    Digitale Medien
    Digitale Medien
    Sex pheromone of fall armyworm,Spodoptera frugiperda (J.E. Smith) (1986)
    Springer
    Journal of chemical ecology 12 (1986), S. 1909-1926 
    Details
    ISSN: 1573-1561
    Schlagwort(e): Spodoptera frugiperda ; fall armyworm ; Lepidoptera ; Noctuidae ; (Z)-7-dodecen-1-ol acetate ; (Z)-9-tetradecen-1-ol acetate ; pheromone ; attractant ; sex pheromone
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie
    Notizen: Abstract Analyses of extracts of pheromone glands and of volatiles from calling female fall armyworm moths,Spodoptera frugiperda (J.E. Smith), revealed the presence of the following compounds: dodecan-1-ol acetate, (Z)-7-dodecen-1-ol acetate, 11-dodecen-1-ol acetate, (Z)-9-tetradecenal, (Z)-9-tetradecen-1-ol acetate, (Z)-11-hexadecenal, and (Z)-11-hexadecen-1-ol acetate. The volatiles emitted by calling females differed from the gland extract in that the two aldehydes were absent. Field tests were conducted with sticky traps baited with rubber septa formulated to release blends with the same component ratios as those emitted by calling females. These tests demonstrated that both (Z)-7-dodecen-1-ol acetate and (Z)-9-tetradecen-1-ol acetate are required for optimum activity and that this blend is a significantly better lure than either virgin females or 25 mg of (Z)-9-dodecen-1-ol acetate in a polyethylene vial, the previously used standard. Addition of the other three acetates found in the volatiles did not significantly increase the effectiveness of the two-component blend as a bait for Pherocon 1C or International Pheromones moth traps.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01041855
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  • 9
    Digitale Medien
    Digitale Medien
    Effect of release rate and ratio of (Z)-11-hexadecen-1-ol from synthetic pheromone blends on trap capture ofHeliothis subflexa (Lepidoptera: Noctuidae) (1990)
    Springer
    Journal of chemical ecology 16 (1990), S. 1259-1268 
    Details
    ISSN: 1573-1561
    Schlagwort(e): Pheromone formulation ; trap design ; insect behavior ; pheromone specificity ; Heliothis subflexa ; Lepidoptera ; Noctuidae
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie
    Notizen: Abstract Response of maleHeliothis subflexa to pheromone-baited traps containing blends of tetradecanal, (Z)-9-tetradecanal, hexadecanal, (Z)-7-hexadecenal, (Z)-9-hexadecenal, (Z)-11-hexadecenal, hexadecan-1-ol acetate, (Z)-7-hexadecen-1-ol acetate, (Z)-9-hexadecen-1-ol acetate, (Z)-11-hexadecen-1-ol acetate, (Z)-9-hexadecen-1-ol, and (Z)-11-hexadecen-1-ol was evaluated. Analysis of trap capture data indicated that (Z)-11-hexadecen-1-ol was a critical component of the pheromone blend. It was determined from emission rate data and measurements of the ratio of pheromone components emitted from rubber septa tested that a significant increase in trap capture of maleH. subflexa occurred when the blends investigated released the alcohol in a narrow range relative to the total amount of pheromone emitted. The optimum range of release ratio of the alcohol for the capture of males in sticky traps was determined to be 0.9–3.5% of the pheromone blend. This release ratio range was reduced to 0.9–1.6% when bucket traps were used.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01021024
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  • 10
    Digitale Medien
    Digitale Medien
    Flight activity ofHeliothis virescens (F.) females (Lepidoptera: Noctuidae) with reference to host-plant volatiles (1991)
    Springer
    Journal of chemical ecology 17 (1991), S. 259-266 
    Details
    ISSN: 1573-1561
    Schlagwort(e): Plant attractant ; host phenology ; oviposition stimulant ; Heliothis subflexa, Heliothis armigera ; Lepidoptera ; Noctuidae
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie
    Notizen: Abstract Heliothis virescens (F.) females responded positively via upwind flight in laboratory assays to volatiles emitted from methylńe chloride washes of fresh whole leaves of host plants including cotton, tobacco, and a weed species,Desmodium tortuosum (Swartz) de Candolle. Except forD. tortuosum, the response increased positively with dose; the steepest slope occurred with an extract of cotton squares (flower buds). Almost all of the moths that landed on the extract dispenser also oviposited. Moths simulated by extracts from cotton squares exhibited a full array of behaviors (upwind flight, contact with the dispenser, examination of the cloth substrate with antennae, and oviposition) expected of gravid individuals seeking sites to propagate the species.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00994331
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