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  • alarm pheromone  (5)
  • Aphid  (3)
  • sex  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Natural inhibition of the aphid alarm pheromone (1984)
    Springer
    Entomologia experimentalis et applicata 36 (1984), S. 197-199 
    Details
    ISSN: 1570-7458
    Keywords: Aphididae ; Myzus persicae ; Phorodon humuli ; Lipaphis erysimi ; alarm pheromone ; inhibitor ; (E)-β-farnesene ; (-)-β-caryophyllene ; Humulus lupulus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00569962
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Plant-derived synergists of alarm pheromone from turnip aphid,Lipaphis (Hyadaphis) erysimi (Homoptera, Aphididae) (1987)
    Springer
    Journal of chemical ecology 13 (1987), S. 1663-1671 
    Details
    ISSN: 1573-1561
    Keywords: Aphid ; pheromone ; alarm pheromone ; plant components ; electrophysiology ; single-cell recording ; isothiocyanate ; Lipaphis erysimi ; Hyadaphis erysimi ; Homoptera ; Aphididae ; (E)-β-farnesene
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The turnip aphid,Lipaphis (Hyadaphis) erysimi, responds weakly to (E)-β-farnesene, the main component of the alarm pheromone, but the response is substantially increased by incorporating plant-derived isothiocyanates, identified in aphid volatiles by coupled gas chromatography-single-cell recording.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00980207
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Sex attractant pheromone of damson-hop aphid Phorodon humuli (Homoptera, aphididae) (1990)
    Springer
    Journal of chemical ecology 16 (1990), S. 3455-3465 
    Details
    ISSN: 1573-1561
    Keywords: Pheromone ; sex ; attractant ; aphid ; Phorodon humuli ; Homoptera ; Aphididae ; nepetalactol ; monoterpenoid ; electrophysiology ; single cell recording ; mass spectrometry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Behavioral studies using an olfactometer demonstrated that sexual females (oviparae) of the damson-hop aphid,Phorodon humuli, release a pheromone to which males respond. Volatiles produced by the oviparae were analyzed by coupled gas chromatography-single cell recording from the secondary rhinaria on the male antenna and showed the presence of one peak with major activity. Coupled gas chrornatography-mass spectrometry suggested a nepetalactol, which was shown to have the 4aR, 7S, 7aS stereochemistry by synthesis from the corresponding nepetalactone isolated from the labiate plantNepeta mussinii. Although the stereochemistry at carbon-1 is not yet established, a synthetic sample comprising ca. 70% 1S and 30% 1R attracted highly significant numbers of males to water traps placed within and adjacent to a hop garden. Initial studies also indicated attraction of males in both the olfactometer and in the field by volatiles from the primary host.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00982110
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Aphid semiochemicals — A review, and recent advances on the sex pheromone (1990)
    Springer
    Journal of chemical ecology 16 (1990), S. 3019-3030 
    Details
    ISSN: 1573-1561
    Keywords: Aphid ; Megoura viciae ; Schizaphis graminum ; Acyrthosiphon pisum ; Aphis fabae ; Myzus persicae ; Hemiptera ; Aphididae ; pheromone ; alarm ; sex ; antifeedant ; attractant ; host plant ; electrophysiology ; single-cell recording ; GC-MS
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The alarm pheromones are known for many species of aphids, and methods of using the synthetic pheromone to improve control of aphids by contact insecticides and biological agents have been devised. Highly active analogs have been prepared and plant-derived synergists identified. Laboratory studies on compounds obtained by chemical modification of the alarm pheromone and antifeedants derived from non-host plants have led to successful field trials against aphid-borne virus diseases in crops. Strategies for biotechnological production of aphid semiochemicals are described. The sex pheromones for a number of aphids have recently been identified. Further studies on the production, perception, and interspecific attraction of the pheromone components are described and possible uses for the sex pheromone are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00979609
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Aphid alarm pheromone derivatives affecting settling and transmission of plant viruses (1982)
    Springer
    Journal of chemical ecology 8 (1982), S. 1377-1388 
    Details
    ISSN: 1573-1561
    Keywords: 1,4-Cycloaddition ; Diels-Alder reaction ; alarm pheromone ; Myzus persicae (Sulz.) ; Homoptera ; Aphididae ; sugar beet yellows virus ; potato virus Y
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract 1,4-Cycloaddition reactions between (E)-β-farnesene (the aphid alarm pheromone) and dienophiles, such as SO2 and RO·CO·C ≡ CCO·OR, gave products more stable and less volatile than the parent compound. In laboratory experiments, the numbers ofMyzus persicae (Sulz.) settling and nymphs deposited on plants were decreased by some of the reaction products. Acquisition, and thereby transmission, of the semipersistent beet yellows virus and the nonpersistent potato virus Y, was decreased.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01403101
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Composition of aphid alarm pheromones (1980)
    Springer
    Journal of chemical ecology 6 (1980), S. 349-360 
    Details
    ISSN: 1573-1561
    Keywords: Aphid ; pheromone ; alarm pheromone ; farnesenes ; pinenes ; behavior
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Analysis of single cornicle droplets from six species of aphid showed the presence of volatile components in addition to (E)-β-farnesene. Compounds identified included (Z,E)-α- and (E,E)-α-farnesene forMyzus persicae and α- and β-pinene forMegoura viciae. WithMegoura viciae, (−)-α-pinene was most important for alarm activity. The major component of the alarm pheromone ofPhorodon humuli was (E)-β-farnesene even though farnesenes are present in the summer hostHumulus lupulus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01402913
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  • 7
    Electronic Resource
    Electronic Resource
    Improved preparation of (E)-β-farnesene and its activity with economically important aphids (1982)
    Springer
    Journal of chemical ecology 8 (1982), S. 1111-1117 
    Details
    ISSN: 1573-1561
    Keywords: Aphids ; Myzus persicae ; Homoptera ; Aphidae ; pheromone ; alarm pheromone ; behavior ; (E)-β-farnesene ; nerolidol ; dehydration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract (E)-β-Farnesene, the major component of the alarm pheromone of many aphids, is prepared in 65% yield by passing commercial nerolidol through an evacuated column of alumina, treated with pyridine, at 200° C. The product is stored without air and applied to aphids as vapor at low speed (ca. 230 mm/sec) in air or nitrogen. The response of eight economically important aphid species was assessed in the laboratory; over 90% ofMyzus persicae responded in a large scale trial.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00986981
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    Paper (German National Licenses)
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