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  • 1
    Electronic Resource
    Electronic Resource
    Diolefin analog of a sex pheromone component ofHeliothis zea active in disrupting mating communication (1982)
    Springer
    Cellular and molecular life sciences 38 (1982), S. 309-310 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary A hydrocarbon (Z)-1, 12-heptadecadiene, was synthesized from the major sex pheromone of the corn earworm,Heliothis zea (Boddie). In field tests, significant disruption of the sexual behavior ofH. zea males was obtained, comparable to the pheromone (Z)-11-hexadecenal. This novel diolefin should be inexpensive, exhibit improved stability, and may lead to improved methods of control.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01949359
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  • 2
    Electronic Resource
    Electronic Resource
    Scanning control of a vibrating string (1986)
    Springer
    Applied mathematics & optimization 14 (1986), S. 27-47 
    Details
    ISSN: 1432-0606
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract We construct scanning feedback controls {γ i (t)} for the vibrating string equation $$\begin{gathered} y_{tt} (x,t) = y_{xx} (x,t) + Ry(x,t) + \sum\limits_{i = 1}^N {\phi (x - \gamma _i } (t))y(x,t), \hfill \\ 0〈 x〈 1,y = 0 at x = 0,1. \hfill \\ \end{gathered} $$ so that (y, y t ) → (0,0) ast → ∞ in the weak topology ofH 0 1 (0,1) ×L 2 (0,1). In particular we show that ifφ is an even polynomial of degreeN with nonpositive coefficients that forR 〈π 2 we can find such stabilizingγ i (t), i=1,⋯,N.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01442226
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  • 3
    Electronic Resource
    Electronic Resource
    Identification of sex pheromone of tomato pinworm,Keiferia lycopersicella (Wals.) (1991)
    Springer
    Journal of chemical ecology 17 (1991), S. 175-183 
    Details
    ISSN: 1573-1561
    Keywords: Sex pheromone ; Keiferia lycopersicella ; tomato pinworm ; Lepidoptera ; Gelechiidae ; (E)-4-tridecenyl acetate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract A sex pheromone produced by femaleKeiferia lycopersicella (Walsingham) was isolated and identified as (E)-4-tridecenyl acetate, based on chemical analyses, electroantennogram assays, and field trapping in California and Florida. Males were captured equally well in traps baited with (E)-4-tridecenyl acetate alone or a variety of (Z)- and (E)-4-tridecenyl acetate blends, although theZ isomer was not detected in extracts of female glands.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00994431
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  • 4
    Electronic Resource
    Electronic Resource
    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
    Keywords: Sex pheromone ; 3,6,9-heneicosatriene ; 3,6,9-eicosatriene ; velvetbean caterpillar ; Anticarsia gemmatalis Hübner ; Lepidoptera ; Noctuidae ; attractant ; hydrocarbons
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00990414
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  • 5
    Electronic Resource
    Electronic Resource
    Air permeation tests with (Z,Z)-3,13-octadecadien-1-ol acetate for reduction in trap catch of peachtree and lesser peachtree borer moths (1981)
    Springer
    Journal of chemical ecology 7 (1981), S. 575-582 
    Details
    ISSN: 1573-1561
    Keywords: Peachtree borer ; lesser peachtree borer ; Synanthedon exitiosa ; S. pictipes ; Lepidoptera ; Sessiidae ; Z,Z-3 ; 13-octadecadien-1-ol acetate sex pheromone ; traps ; air permeation ; trap catch reduction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Air permeation trials were conducted to determine whether trap catches of the peachtree borer (PTB)Synanthedon exitiosa (Say) and lesser peachtree borer (LPTB)S. pictipes (Grote and Robinson) could be reduced through application of the synthetic pheromone of the PTB, (Z,Z)-3,13-octadecadien-1-ol acetate (Z,Z-ODDA), at 92% isomeric purity. The pheromone was released into the air of peach orchard test plots with hanging laminated plastic dispensers or hollow fiber dispensers in the trees and by aerial dispersal of microcapsules containing a solution of the lure. Results showed that all formulations ofZ, Z-ODDA reduced trap catches of both PTB and LPTB in treated plots relative to catches in traps in untreated plots. In one air permeation experiment, three types of laminated dispensers and one type of hollow fiber dispenser each reduced trap catch of PTB by 93–100% and of LPTB by 75–95%. In a separate test, two formulations of microencapsulatedZ,Z-ODDA did not reduce trap catch of male PTB as effectively as the laminated dispenser; results for LPTB were similar for both the dispensers and microcapsules. Catches of male PTB moths in traps baited with laminated and or fiber pheromone dispensers containing ODDA (94∶6%Z,Z∶E,Z) were not significantly different. LPTB male moths were also captured in these traps, the catches being dependent upon the initial pheromone loading and the type of dispensers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00987705
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  • 6
    Electronic Resource
    Electronic Resource
    Use of paired and single traps to assess perception and discrimination of sex pheromone mixtures in the field byTrichoplusia ni (Hübner) (1995)
    Springer
    Journal of chemical ecology 21 (1995), S. 2057-2068 
    Details
    ISSN: 1573-1561
    Keywords: Behavior ; perception ; discrimination ; trap ; sex pheromone
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Paired wind-oriented traps (WORT) and single traps were deployed simultaneously in the same field to investigate whether or not inferences about the central nervous system processes of discrimination and perception can be made from differences in moth captures. The stimulus levels deployed were those that typically may be found downwind of a calling virgin female cabbage looper,Trichoplusia ni (Hübner), so that inferences are relevant to natural stimulus intensities. Captures of male cabbage loopers in the WORT traps paralleled prior laboratory measures of pheromone mixture discrimination. The pattern of captures by the two trapping systems probably reflects perceptive and discriminative processing differences in the central nervous system. Captures in traps baited withZ7–12: Ac alone were equal to, or better than, captures in traps baited with three- and six-component mixtures that containedZ7–12: Ac.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02033862
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  • 7
    Electronic Resource
    Electronic Resource
    Identification of female-produced sex pheromone from banded cucumber beetle,Diabrotica balteata leconte (Coleoptera: Chrysomelidae) (1987)
    Springer
    Journal of chemical ecology 13 (1987), S. 1601-1616 
    Details
    ISSN: 1573-1561
    Keywords: Sex pheromone ; 6,12-dimethylpentadecan-2-one ; ketone ; banded cucumber beetle ; Diabrotica balteata ; Chrysomelidae ; Coleoptera ; attractant
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract A sex pheromone produced by female banded cucumber beetle adults,Diabrotica balteata LeConte, was isolated from volatiles trapped on Porapak Q and identified as 6,12-dimethylpentadecan-2-one. The structure was elucidated by spectroscopic analyses and confirmed by synthesis. The synthesized racemic compound was equal to the purified natural pheromone in eliciting responses by banded cucumber beetle males to field traps. A doseresponse characteristic was demonstrated for the racemic material formulated on filter paper or rubber septa and placed in field traps. The absolute configuration at the C-6 and C-12 positions was not established.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00980203
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  • 8
    Electronic Resource
    Electronic Resource
    Behavioral response of male white peach scale to the sex pheromone, (R,Z)-3,9,-dimethyl-6-isopropenyl-3,9-decadien-1-ol propionate and corresponding alcohol (1990)
    Springer
    Journal of chemical ecology 16 (1990), S. 749-756 
    Details
    ISSN: 1573-1561
    Keywords: Pheromonal races ; white peach sale ; Pseudaulacaspis pentagona ; Homoptera ; Coccoidea
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Males of the white peach scale,Pseudaulacaspis pentagona (Tar-gioni-Tozzetti), in Florida differ from this scale in France in their responses to putative pheromonal chemicals presented in a laboratory bioassay. Males from Florida were attracted to, and exhibited sexual (coputatory) behaviors at, the locus of evaporation of (R,Z)-3,9-dimethyl-6-isopropenyl-3,9-deca-dien-1-ol propionate (P) (previously identified from effluvia of Florida females). Addition of the corresponding primary alcohol (A) to the propionate did not alter the attraction of Florida males to the synthetic P and did not alter their sexual responses from those exhibited by males exposed to P alone. In contrast, the effluvia from French scales has been reported to contain P and A, and the alcohol has been reported in laboratory studies to be required to release sexual behavior in French males. This suggests that the conspecific status of the scale in Florida and France should be reexamined. Field trap baits with 2.5 μg of a 1∶ 1 mixture of P and A captured significantly fewer Florida males than traps baited with 1.25 μg of P alone, but traps similarly baited with 0.125 μg of each material captured the same number of insects as traps baited with 0.125 μg of P alone.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01016486
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  • 9
    Electronic Resource
    Electronic Resource
    Identification of the white peach scale sex pheromone (1979)
    Springer
    Journal of chemical ecology 5 (1979), S. 941-953 
    Details
    ISSN: 1573-1561
    Keywords: White peach scale ; Pseudaulacaspis pentagona ; pheromone ; attractant ; microtechniques ; enantiomer ; isomers ; (R,Z)-3 ; 9-dimethyl-6-isopropenyl-3 ; 9-decadien-1-ol propionate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00990217
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  • 10
    Electronic Resource
    Electronic Resource
    Identification of a sex pheromone ofHeliothis subflexa (GN.) (Lepidoptera: Noctuidae) and field trapping studies using different blends of components (1981)
    Springer
    Journal of chemical ecology 7 (1981), S. 1011-1022 
    Details
    ISSN: 1573-1561
    Keywords: Sex pheromone ; Heliothis subflexa ; Lepidoptera ; Noctuidae ; reproductive behavior ; field trapping ; capillary chromatography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Eight compounds were isolated from the sex pheromone gland ofHeliothis subflexa (Gn.) and identified as hexadecanal, (Z)-9-hexadecenal, (Z)-11-hexadecenal, (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. Although the whole blend was found to be an effective male attractant, the deletion of alcohols from the blend increased trap captures considerably. Further, although the binary mixture of (Z)-9-hexadecenal and (Z)-11-hexadecenal caught some maleH. subflexa, significant increases in captures were noted when the three acetate components were included in the blend.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00987623
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