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  • 1
    Digitale Medien
    Digitale Medien
    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
    Schlagwort(e): Insecta ; Tephritidae ; attractant ; behavior ; Ceratitis capitata
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02343859
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  • 2
    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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  • 3
    Digitale Medien
    Digitale Medien
    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
    Schlagwort(e): Insecta ; Diptera ; Tephritidae ; Mediterranean fruit fly ; pheromone ; attractant ; Ceratitis capitata ; ethyl-(E)-3-octenoate ; geranyl acetate ; (E,E)-α-farnesene
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00993739
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  • 4
    Digitale Medien
    Digitale Medien
    Identification of the white peach scale sex pheromone (1979)
    Springer
    Journal of chemical ecology 5 (1979), S. 941-953 
    Details
    ISSN: 1573-1561
    Schlagwort(e): White peach scale ; Pseudaulacaspis pentagona ; pheromone ; attractant ; microtechniques ; enantiomer ; isomers ; (R,Z)-3 ; 9-dimethyl-6-isopropenyl-3 ; 9-decadien-1-ol propionate
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie
    Notizen: Abstract Micro techniques were used to obtain spectroscopic and degradative information from less than 5μg of the sex attractant of female white peach scale,Pseudaulascaspis pentagons (Targioni-Tozzetti) isolated from airborne collections. The pheromone was identified as (Z)-3,9-dimethyl-6-isopropenyl-3,9-decadien-1-ol propionate. Both enantiomers of theZ isomer and also the enantiomers of theE isomer were prepared from (R)-or (S)-limonene. Bioassays of material with minimum enantiomeric purity of 95% showed that at extreme dilution only theR,Z isomer attracted male white peach scale; however activity of theS,Z enantiomer could not be completely excluded.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00990217
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  • 5
    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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  • 6
    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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  • 7
    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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  • 8
    Digitale Medien
    Digitale Medien
    Identification of volatile sex pheromone components released by the southern armyworm,Spodoptera eridania (Cramer) (1985)
    Springer
    Journal of chemical ecology 11 (1985), S. 717-725 
    Details
    ISSN: 1573-1561
    Schlagwort(e): Spodoptera eridania ; southern armyworm ; Spodoptera exigua ; beet armyworm ; Lepidoptera ; Nocteridae ; pheromone ; attractant ; (Z)-9-tetradecen-1-ol acetate ; (Z)-9-(E)-12-tetradecadien-1-ol acetate ; (Z)-9-(E)12-tetradecadien-1-ol acetate ; (Z)-9-(E)-11-tetradecadien-1-ol acetate ; (Z)-11-hexadecen-1-ol acetate ; (Z)-9-tetradecen-1-ol, behavior
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie
    Notizen: Abstract Analysis of sex pheromone gland extracts and volatile pheromone components collected from the calling female southern armyworm,Spodoptera eridania (Cramer), by high-resolution capillary gas chromatography and mass spectroscopy indicated that a number of 14-carbon mono- and diunsaturated acetates and a monounsaturated 16-carbon acetate were produced. Gland extracts also indicated the presence of (Z)-9-tetradecen-1-ol. However, this compound was not found in collections of volatiles. Field trapping studies indicated that the volatile blend composed of (Z)-9-tetradecen-1-ol acetate (60%), (Z)-9-(E)-12-tetradecadien-1-ol acetate (17%), (Z)-9-(Z)-12-tetradecadien-1-ol acetate (15%), (Z)-9-(E)-11-tetradecadien-1-ol acetate (5%), and (Z)-11-hexadecen-1-ol acetate (3 %) was an effective trap bait for males of this species. The addition of (Z)-9-tetradecen-1-ol to the acetate blends tested resulted in the capture of beet armyworm,S. exigua (Hubner), males which provides further evidence that the alcohol is a pheromone component of this species.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00988301
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  • 9
    Digitale Medien
    Digitale Medien
    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
    Schlagwort(e): Cotton ; tobacco ; groundcherry ; Physalis ; Desmodium ; Heliothis subflexa ; Heliothis virescens ; Lepidoptera ; Noctuidae ; plant-insect interaction ; host-plant resistance ; attractant
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00979481
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