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  • Noctuidae  (13)
  • Chemistry  (4)
  • Ceratitis capitata  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Oriented flight responses of female Mediterranean fruit flies to calling males, odor of calling males, and a synthetic pheromone blend (1992)
    Springer
    Entomologia experimentalis et applicata 65 (1992), S. 259-266 
    Details
    ISSN: 1570-7458
    Keywords: Insecta ; Tephritidae ; attractant ; behavior ; Ceratitis capitata
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Male Mediterranean fruit flies,Ceratitis capitata (Wiedemann), produce volatile chemicals thought to be attractive sex pheromones. We demonstrated for the first time that male odor elicits upwind flight and zigzagging upwind flight patterns in mature unmated females. Such flight patterns indicate the mechanisms involved in female location of the pheromone source and arrival at that source. Similar female oriented upwind flight responses occurred with a three component blend comprised of ethyl-(E)-octenoate, geranyl acetate, andE,E-alpha farnesene. These findings clarify the role of male sex pheromone in mate-location strategies in this species and provide new bioassay criteria for evaluating attraction responses to male pheromone and synthetic blends.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02343859
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  • 2
    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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  • 3
    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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  • 4
    Electronic Resource
    Electronic Resource
    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
    Keywords: Cotton ; groundcherry ; tobacco ; Gossypium ; Desmodium ; Physalis ; plant-insect interaction ; host-plant resistance ; Heliothis spp. ; Lepidoptera ; Noctuidae ; oviposition stimulant ; oviposition deterrent
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01020496
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  • 5
    Electronic Resource
    Electronic Resource
    Preferences of matedHeliothis virescens andH. subflexa females for host and nonhost volatiles in a flight tunnel (1990)
    Springer
    Journal of chemical ecology 16 (1990), S. 2889-2898 
    Details
    ISSN: 1573-1561
    Keywords: Cotton ; tobacco ; groundcherry ; Physalis ; Desmodium ; Heliothis subflexa ; Heliothis virescens ; Lepidoptera ; Noctuidae ; plant-insect interaction ; host-plant resistance ; attractant
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract In flight-tunnel bioassays, mated femaleHeliothis subflexa (Gn.) moths demonstrated in dual-choice tests a significant preference for volatiles from an extract of their only known host,Physalis spp. (groundcherry). However,H. virescens (F.), a polyphagous species, responded positively by anemotaxis to extracts from susceptible tobacco, cotton,Desmodium tortuosum (host plants), and groundcherry, a nonhost.H. virescens females did not fly to volatiles emanating from an extract of a resistant tobacco cultivar.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00979481
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  • 6
    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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  • 7
    Electronic Resource
    Electronic Resource
    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
    Keywords: Pheromone formulation ; trap design ; insect behavior ; pheromone specificity ; Heliothis subflexa ; Lepidoptera ; Noctuidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01021024
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  • 8
    Electronic Resource
    Electronic Resource
    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
    Keywords: Plant attractant ; host phenology ; oviposition stimulant ; Heliothis subflexa, Heliothis armigera ; Lepidoptera ; Noctuidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00994331
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  • 9
    Electronic Resource
    Electronic Resource
    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
    Keywords: Male-produced pheromone ; cabbage looper ; Trichoplusia ni ; Lepidoptera ; Noctuidae ; female attractant ; linalool ; p-cresol ; m-cresol ; enantiomers
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00994243
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  • 10
    Electronic Resource
    Electronic Resource
    Analysis, synthesis, formulation, and field testing of three major components of male mediterranean fruit fly pheromone (1991)
    Springer
    Journal of chemical ecology 17 (1991), S. 1925-1940 
    Details
    ISSN: 1573-1561
    Keywords: Insecta ; Diptera ; Tephritidae ; Mediterranean fruit fly ; pheromone ; attractant ; Ceratitis capitata ; ethyl-(E)-3-octenoate ; geranyl acetate ; (E,E)-α-farnesene
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Three major components, ethyi-(E)-3-octenoate, geranyl acetate, and (E,E)-α-farnesene, emitted as volatiles by laboratory-reared and wild male medflies were collected and analyzed qualitatively and quantitatively. Peak emission of these compounds occurred during the third to fifth hours of the photophase and differences were observed in the ratios of the three components emitted by male laboratory-reared and wild flies. These three compounds were synthesized, and a method was developed to formulate a synthetic blend that released the compounds in a ratio similar to that emitted by wild male medflies. Attractiveness of the blend to female medflies was demonstrated under field conditions by comparing trap catches. Black spherical traps, baited with the synthetic blend to release 1.6 male equivalents, caught significantly more females than blank traps and traps from which the blend released was 0.3, 3.2 or 6.4 male equivalents.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00993739
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