Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Skimmia japonica  (1)
  • Spodoptera litura  (1)
  • venom  (1)
  • 1990-1994  (2)
Collection
Keywords
Publisher
Years
Year
  • 1
    ISSN: 1573-1561
    Keywords: Megalomyrmex ; Hymenoptera ; Myrmicinae ; venom ; alkaloids ; ants ; pyrrolines ; alarm behavior ; stridulation ; toxicity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Chemical analysis of the venom of the myrmicine antMegalomyrmex foreli from Costa Rica revealed the presence of four major alkaloidal components. Two of these, 2-butyl-5-(E, 1-heptenyl)-5-pyrroline (3) and 2-butyl-5-(E, E, 1,3-heptadienyl)-5-pyrroline (4), constitute a new functional class of ant venom alkaloids, whose structures were assigned from their spectral and chemical behavior and unambiguous syntheses. The function of these compounds is suggested by field observations of the behavior ofM. foreli, its sting morphology, and the relative toxicity of 3 and 4 against termite workers.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 1570-7458
    Keywords: video image analysis ; antifeedant bioassay ; computer interface ; Spodoptera litura ; Skimmia japonica
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract In the course of our search for new insect antifeedant substances from plants, we have devised an improved antifeedant leaf-disk bioassay. Our system allows an accurate measurement of consumed disk surfaces, using a video camera interfaced with a computer. The scanned image of the leaf disks is stored, and the eaten areas are measured with the help of a video-image analysis software. This new method allows for precise quantification of insect antifeedant activity tested on leaf material. This method was applied to the screening of Hokkaido plants for antifeedant activity. Out of 206 samples, seven demonstrated significant activity against larvae of the tobacco cutworm,Spodoptera litura.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...