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  • Lepidoptera  (10)
  • Springer  (10)
  • 1980-1984  (10)
  • 1982  (6)
  • 1981  (4)
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  • Springer  (10)
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  • 1980-1984  (10)
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  • 1
    Electronic Resource
    Electronic Resource
    Repellency of pheromones released by females of Heliothis armigera and H. zea to females of both species (1981)
    Springer
    Entomologia experimentalis et applicata 30 (1981), S. 123-127 
    Details
    ISSN: 1570-7458
    Keywords: Sex Pheromones ; Repellent ; Heliothis armigera ; Heliothis zea ; Lepidoptera ; Noctuidae ; cotton bollworm ; corn earworm
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Résumé L'examen en olfactomètre a porté sur les réactions face à d'autres femelles de la même espèce, de femelles vierges ou ayant copulé d'Heliothis armigera Hübner et H. zea Boddie. Le lot comprenait 8 femelles, vierges ou ayant copulé en présence d'une femelle vierge ou ayant copulé. Les 4 combinaisons possibles de femelles vierges et de femelles ayant copulé ont été examinées avec 12 répétitions pour chaque espèce. Un extrait de l'extrémité de l'abdomen de femelles vierges d'une espèce a été présenté aux femelles de l'autre espèce pour examiner les possibilités de réactions interspécifiques aux phéromones. Pour chaque espèce, les réactions interspécifiques de répulsion entre femelles ont été hautement significatives par rapport aux témoins, à l'exception toutefois des réactions de femelle ayant copulé face à des femelles ayant elles aussi copulé. Les répulsions moyennes chez H. armigera et H. zea pour les 8 femelles de chaque expérience ont été: a) vierges en présence d'une vierge: 7,33 et 7,66; b) vierges en présence d'une femelles ayant copulé: 5,76 et 5,58; c) femelles ayant copulé en présence d'une vierge: 4,67 et 4,83. Les différences sont hautement significatives entre chaque paire de moyennes et entre chaque paire et le lot témoin; 3,17; 3,17; 3,42; 4,00 pour H. armigera; 3,17; 3,50; 2,83 et 3,75 pour H. zea. Les femelles vierges des deux espèces, H. armigera et H. zea ont présenté une réaction de répulsion en présence d'un extrait de l'abdomen de l'autre espèce; les répulsions moyennes étant respectivement 5,53 et 5,33 contre 3,83 et 3,58 pour le lot trémoin. On peut en conclure que ces répulsions doivent entraîner une tendance à la répartition uniforme.
    Notes: Abstract An olfactometer was used to determine the effect of pheromones released by females of the bollworms Heliothis armigera (Hübner) and H. zea (Boddie) on females of the same species. Four combinations of virgin and mated females were tested for repellency of one to the other. Evidence is presented that females of the two bollworms were repelled by females of the same species. In addition, extracts of virgin female abdomens of each species repelled virgin females of the other species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00300876
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  • 2
    Electronic Resource
    Electronic Resource
    Sex pheromone ofPandemis heparana (Den. and Schiff.) (Lepidoptera:Tortricidae) (1982)
    Springer
    Journal of chemical ecology 8 (1982), S. 663-670 
    Details
    ISSN: 1573-1561
    Keywords: Pandemis heparana ; sex pheromone ; Lepidoptera ; Tortricidae ; gas chromatography ; mass spectrometry ; insect behavior ; (Z)-11-tetradecen-1-yl acetate ; (Z)-9-tetradecen-1-yl acetate ; (Z)-11-tetradecenl-ol ; tetradecyl acetate ; dodecyl acetate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract 90% (Z)-11-tetradecen-1-yl acetate, 5% (Z)-9-tetradecen-1-yl acetate, 5% (Z)-11-tetradecen-1-ol, dodecyl acetate (〈1%), and tetradecyl acetate (〈1%) were identified from gland extracts ofPandemis heparana females by gas chromatography and gas chromatography-mass spectrometry analysis (including mass fragmentography studies), chemical characterization, total synthesis, laboratory and field bioassays. In the field, a mixture of (Z)-11-tetradecen-l-yl acetate and (Z)-9-tetradecen-l-yl acetate (95∶5) was found to be essential for attractiveness ofP. heparana males.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00989635
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  • 3
    Electronic Resource
    Electronic Resource
    Synthesis of sex pheromone components of the forest tent caterpillar,Malacosoma disstria (Hübner) and of the western tent caterpillar,Malacosoma californicum (Packard) (1981)
    Springer
    Journal of chemical ecology 7 (1981), S. 159-164 
    Details
    ISSN: 1573-1561
    Keywords: Synthesis ; isomers ; 5,7-dodecadienal ; sex pheromone ; Malacosoma disstria ; Malacosoma californicum ; Lepidoptera ; Lasiocampidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract All four geometrical isomers of 5,7-dodecadien-1-ol have been stereoselectively synthesized by using Wittig condensation reactions. (5 Z,7E)-5,7-Dodecadien-1-ol and its corresponding aldehyde are components of the sex pheromone of the forest tent caterpillar. (5 E,7 Z)-5,7-Dodecadienal is a component of the pheromone of the western tent caterpillar. These compounds have been successfully tested in the field.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00988643
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  • 4
    Electronic Resource
    Electronic Resource
    Structure-activity relationships in sex attractants for north American noctuid moths (1982)
    Springer
    Journal of chemical ecology 8 (1982), S. 731-754 
    Details
    ISSN: 1573-1561
    Keywords: Alkenylcompounds ; pheromones ; chemotaxonomy ; decenyl dodecenyl ; tetradecenyl ; hexadecenyl ; trapping ; Lepidoptera ; Noctuidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Sex attractants known for 145 species of noctuid moths have many common features both as to chemical constituents and to their relationships in blends. The great majority of constituents are straight-chain (Z)-alkenols, -alkenals, or -alkenyl acetates of even carbon number (10 through 16). The unsaturation is nonterminal in odd-numbered positions (5 through 11). In effective lures, these components are blended in specific ratios and the components in a sex pheromone or sex attractant blend are structurally related by “one-change” steps. This means that any blend component differs from one or more other components by a single structural alteration, such as a change in double bond position, or a change in carbon chain length, or a change in the oxygen function. For the few multicomponent systems known in detail, the central place in the “one-change” framework is occupied by the predominant blend component. Different patterns of occurrence of lure components occur in the subfamilies Acronictinae, Noctuinae, Hadeninae, Cuculliinae, Amphipyrinae, Heliothidinae, Plusiinae, Acontiinae, and Pantheinae, and some subfamilies are as yet without known lures. Some guiding principles for elucidation of blend compositions for unstudied species are presented; these guidelines can also be used in improvement of some synthetic blends of unsatisfactory quality.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00988315
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  • 5
    Electronic Resource
    Electronic Resource
    Effects of pheromone components and their degradation products on the response ofHeliothis spp. to traps (1982)
    Springer
    Journal of chemical ecology 8 (1982), S. 755-762 
    Details
    ISSN: 1573-1561
    Keywords: Sex pheromone ; Heliothis virescens ; tobacco budworm ; Heliothis zea ; bollworm ; virelure ; Lepidoptera ; Noctuidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract None of the isolated degradation products of (Z)-11-hexadecenal [(Z)-11-HDAL] affected the catches of either tobacco budworm [Heliothis virescens (F.)] or bollworm [H. zea (Boddie)] moths when dispensed with pheromone from cotton dental rolls in cone traps. Also, none of the degradation products of (Z)-9-tetradecenal [(Z)-9-TDAL] had an effect on trap catches of tobacco budworm moths. Two of the three chemicals that have previously been identified in ovipositor washes of tobacco budworms but that are absent in those of bollworms caused a reduction in capture of bollworms: (Z)-9-TDAL (1.0 μg/trap) caused a 96% reduction in trap catch and (Z)-11-hexadecen-1-ol (20.0 μg/trap) caused a similar reduction. Tetradencenal (40 μg/trap) had no effect on trap catch.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00988316
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  • 6
    Electronic Resource
    Electronic Resource
    Development of a bioluminescence assay for aldehyde pheromones of insects (1982)
    Springer
    Journal of chemical ecology 8 (1982), S. 923-933 
    Details
    ISSN: 1573-1561
    Keywords: Aldehyde pheromone ; bioluminescence ; corn earworm ; Heliothis zea ; insect pheromone ; navel orangeworm ; Amyelois transitera ; western spruce budworm ; Choristoneura occidentalis ; spruce budworm ; Choristoneura fumiferana ; Lepidoptera ; assay for aldehydes ; Pyralidae ; Noctuidae ; Tortricidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Pheromone levels in the glands of individual female moths of the spruce budworm (Choristoneura fumiferana), the western spruce budworm (C. occidentalis), the navel orangeworm (Amyelois transitella), and the corn earworm (Heliothis zea) were quantitively measured by means of a new bacterial bioluminescence assay specific for aldehydes. The sensitivity and rapidity of the bioluminescent assay enabled studies to be conducted on the dependence of the pheromone levels in the spruce budworm on age and the effect of photoperiod on the pheromone levels in the corn earworm. The bioluminescence assay provides a rapid and sensitive approach for studying aldehyde pheromone levels and their regulation in insects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00987659
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  • 7
    Electronic Resource
    Electronic Resource
    Development of a bioluminescence assay for aldehyde pheromones of insects (1982)
    Springer
    Journal of chemical ecology 8 (1982), S. 935-945 
    Details
    ISSN: 1573-1561
    Keywords: Aldehydes ; bioluminescence ; insect pheromones ; Porapak Q ; spruce budworm ; Choristoneura fumiferana ; Lepidoptera ; (E)-11-tetradecenal ; trapping ; bioassay for aldehydes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract A newly developed bioluminescent assay was used to measure quantitatively the amount of (E)-11-tetradecenal, the major component of the sex pheromone of the spruce budworm, trapped on Porapak Q®. The bioluminescent response was linearly related to the amount of aldehyde either deposited on the absorbent or trapped from an airstream. However, the recovery of pheromone from Porapak was dependent on whether the air was prefiltered (through Porapak) or taken directly from the atmosphere. Furthermore, pheromone on Porapak was lost with time during the flow of air through the absorbent, indicating that trapping of aldehyde pheromone should be conducted for short periods of time for optimal recoveries. The applicability of the assay system for the rapid and direct measurement of the release rates of aldehyde pheromone lures was demonstrated for pheromone lures used for baiting spruce budworm traps.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00987660
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  • 8
    Electronic Resource
    Electronic Resource
    A four-component pheromone blend for optimum attraction of redbacked cutworm males,Euxoa ochrogaster (Guenée) (1981)
    Springer
    Journal of chemical ecology 7 (1981), S. 615-625 
    Details
    ISSN: 1573-1561
    Keywords: Redbacked cutworm ; Euxoa ochrogaster ; Lepidoptera ; Noctuidae ; sex pheromone blend ; sex attractant ; parapheromone ; Z-5-decenyl acetate ; Z-5-undecenyl acetate ; Z-5-dodecenyl acetate ; Z-7-dodecenyl acetate ; Z-9-dodecenyl acetate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Four acetates,Z-5-decenyl acetate,Z-5-,Z-7-, andZ-9-dodecenyl acetates, in microgram ratios of 1∶200∶2∶1 or 1∶200∶6∶2 were excellent, specific sex pheromone blends for capturing male redbacked cutworm moths in cone traps. Blends in ratios of 1∶200∶2∶1 and 2∶200∶2∶1 at 1000 μg/ rubber septum dispenser remained highly effective for 6 weeks under field conditions. The essential minor components,Z-5-decenyl,Z-7-, andZ-9-dodecenyl acetates, became inhibitory at concentrations of about 10% in the blends, and this may be an important general phenomenon in lepidopteran pheromones. Blends involving a parapheromone,Z-5-undecenyl acetate, withZ-5-,Z-7-, andZ-9-dodecenyl acetate, in microgram ratios of 8∶200∶2∶1 or 20∶200∶6∶2 were also excellent specific attractants for this species. TheZ-8-dodecenyl acetate had no obvious effect on the attraction of the redbacked cutworm males.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00987709
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  • 9
    Electronic Resource
    Electronic Resource
    Comparative distribution and persistence of disparlure in woodland air after aerial application of three controlled-release formulations (1981)
    Springer
    Journal of chemical ecology 7 (1981), S. 867-880 
    Details
    ISSN: 1573-1561
    Keywords: Disparlure ; gypsy moth ; Lymantria dispar ; Lepidoptera ; Lymantriidae ; controlled release ; laminated dispensers ; hollow fibers ; microcapsules ; atmospheric permeation ; mating disruption ; air concentration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Disparlure, the gypsy moth sex pheromone, was aerially applied to three plots, using a different controlled-release formulation-gelatin microcapsules, flakes of plastic laminates, or hollow fibers-in each plot. Disparlure concentrations in air were measured intermittently over a 34-day period after application. Measurements were made at four heights above ground: 0.3,2,5, and 10m. Wind speed and air temperature were measured concurrently. Disparlure was emitted from the microcapsules and fibers at very high levels for the first day or two; thereafter, all three formulations produced gradually decreasing aerial concentrations. After 32–34 days, concentrations in all plots ranged from 1.5% to 15.5% of those on the first day, although most of the pheromone remained in the formulations. Results suggest that the effective life of all three formulations for mating disruption by atmospheric permeation would be near 30 days under the test conditions, with fibers likely to have the shortest life. Concentrations varied diurnally throughout the experiment, with highest levels generally between 1400 and 2200 hr each day. Concentrations were highest at the 10-m height with microcapsules and at the 0.3- and 10-m heights with flakes, but were similar at all heights with fibers. Biological implications of the results are presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00992384
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  • 10
    Electronic Resource
    Electronic Resource
    Site of secretion of the trail marker of the eastern tent caterpillar (1982)
    Springer
    Journal of chemical ecology 8 (1982), S. 31-39 
    Details
    ISSN: 1573-1561
    Keywords: Malacosoma americanum ; eastern tent caterpillar ; Lepidoptera ; Lasiocampidae ; trail pheromone ; pheromone secretory site ; silk trail
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract A new site of secretion of a chemical trail marker was found on the sternum at the tip of the last abdominal segment of the larva of the eastern tent caterpillarMalacosoma americanum. Larvae marked from this site by drawing their sterna along the substrate when they extended existing trails in search of food and again when they established recruitment trails to food-finds. Differences in the quantity or quality of the marker deposited by exploring and recruiting caterpillars may account for the greater activity of the recruitment trails.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00984003
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