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  • 1
    Electronic Resource
    Electronic Resource
    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
    Keywords: Mating behavior ; Parasitoids ; Cotesia (=Apanteles)marginiventris ; Hymenoptera ; Braconidae ; Spodoptera frugiperda ; Lepidoptera ; Noctuidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01207436
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  • 2
    Electronic Resource
    Electronic Resource
    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
    Keywords: Heliothis subflexa ; Lepidoptera ; Noctuidae ; attractant ; kairomone ; groundcherry ; Physalis angulatus ; flight tunnel bioassay ; plant-insect interaction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02027784
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  • 3
    Electronic Resource
    Electronic Resource
    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
    Keywords: Anticarsia gemmatalis ; velvetbean caterpillar ; Lepidoptera ; Noctuidae ; attractant ; pheromone ; hairpencils ; (Z,Z,Z)-3,6,9-heneicosatriene ; male-produced pheromone
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01019340
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  • 4
    Electronic Resource
    Electronic Resource
    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
    Keywords: Volatile sex pheromone blend ; behavior ; chemistry ; Heliothis virescens ; Lepidoptera ; Noctuidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01045595
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  • 5
    Electronic Resource
    Electronic Resource
    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
    Keywords: Spodoptera frugiperda ; fall armyworm ; Lepidoptera ; Noctuidae ; (Z)-7-dodecen-1-ol acetate ; (Z)-9-tetradecen-1-ol acetate ; pheromone ; attractant ; sex pheromone
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01041855
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